Home - Field Guide to Common Texas Insects

ALPHABETICAL LISTING OF INSECT ORDERS

Blattodea – roaches
Coleoptera – beetles, weevils
Collembola – springtails
Dermaptera – earwigs
Diptera – flies
Ephemeroptera – mayflies
Hemiptera – true bugs
Homoptera – aphids, fleahoppers
Hymenoptera – ants, wasps, bees
Isoptera – termites
Lepidoptera – butterflies, caterpillars
Mantodea – mantids
Mecoptera – scorpionfly

Neuroptera – lacewings
Odonata – dragonflies, damselflies
Orthoptera – grasshoppers
Phasmida – walkingstick
Phthiraptera – lice
Plecoptera – stoneflies
Psocoptera – booklice
Siphonaptera – fleas
Thysanoptera – thrips
Thysanura – silverfish
Trichoptera – caddisfly

NON-INSECT ARTHROPODS

Acari – mites, ticks
Araneae – spiders
Class Chilopoda – centipedes
Class Diplopoda – millipedes
Isopoda – sowbugs, pillbugs
Opiliones – harvestmen
Pseudoscorpiones – pseudoscorpions
Scorpionida – scorpions
Solifugae – windscorpions
Uropygi – vinegaroons

ORDER COLLEMBOLA

A springtail, (Collembola). Photo by Drees.

ORDER THYSANURA

Silverfish, Lespisma sacchrina (Linnaeus) (Thysanura:Lepismatidae). Photo by Drees.

ORDER EPHEMEROPTERA

A mayfly, (Ephemeroptera). Photo by J. W. Stewart.
A mayfly, (Ephemeroptera), nymph. Photo by Drees.

ORDER ODONATA

Common skimmer, Libellula luctosa Burmeister (Odonata: Libellulidae), male. Photo by N. Mirro.
A dragonfly, nymph. Photo by Drees.
A damselfly. Photo by R. Parker.
A damselfly, (Calopterygidae), nymph.

ORDER PHASMIDA

Walkingsticks, Anisomorpha sp. (Phasmida), mating. Photo by M. E.Merchant
Walkingstick, Megaphasma dentricus (Stal) (Phasmida), female. Photo by Drees.

ORDER ORTHOPTERA

Differential grasshopper, Melanoplus differentialis (Thomas) (Orthoptera: Acrididae). Photo by Drees.
A banded-winged grasshopper, Arphia sp. (Orthoptera: Acrididae). Photo by Drees.
Lubber grasshopper, Brachystola magna (Girard). Photo by W. Sterling.
“Rainbow” grasshopper or “pictured” grasshopper, Dactylotum sp. (Orthoptera: Acrididae). Photo by G. Cronholm.
A “false” katydid, Scudderia sp. (Orthoptera: Tettigoniidae), adult. Photo by Drees.
A tree cricket, Oecanthus sp. (Orthoptera: Gryllidae), nymph. Photo by Drees.
A field cricket, Gryllus sp. (Orthoptera: Gryllidae). Photo by Drees.
A cave cricket or camel cricket, Ceuthophilus sp. (Orthoptera: Gryllacrididae). Photo by Jackman.
Southern mole cricket, Scapteriscus borellia Giglio-Tos (Orthoptera: Gryllotalpidae). Photo by Drees.

ORDER MANTODEA

A praying mantid, Stagmomantis sp. (Mantodea: Mantidae). Photo by G. Cronholm.
A praying mantid, (Mantodea: Mantidae), egg mass. Photo by Drees.

ORDER BLATTODEA

American cockroach, Periplaneta americana Linnaeus (Blattodea:Blattidae), adults and nymphs. Photo by Drees.
Smokeybrown cockroach, Periplaneta fuliginosa (Serville) (Blattodea:Blattidae). Photo by M. E. Merchant.
A pale-bordered field cockroach, Pseudomops sp. (Blattodea:Blatellidae). Photo by Drees.
German cockroach, Blattella germanica (Linnaeus) (Blattodea:Blattellidae). Photo by Drees.

ORDER ISOPTERA

Drywood termites and subterranean termites, (Isoptera:Kalotermitidae). Photo by Drees.
Soldier termites and worker termites, Reticulitermes sp. (Isoptera:Rhinotermitidae). Photo by H. A. Turney.
A termite queen, Reticulitermes sp. (Isoptera:Rhinotermitidae). Photo by Drees.
A winged reproductive termite, Reticulitermes sp. (Isoptera:Rhinotermitidae). Photo by J. Hamer.
Desert termite, Gnathamitermes tubiformans (Buckley) (Isoptera:Termitidae), castings around plant stems. Photo by Drees.

ORDER DERMAPTERA

Ring-legged earwig, Euborellia annulipes (Lucas) (Dermaptera:Carcinophoridae). Photo by Drees.

ORDER PLECOPTERA

A stonefly, (Plecoptera), adult. Photo by Drees.
A stonefly, (Plecoptera), nymph. Photo by Drees.

ORDER PSOCOPTERA

Barklice, Archipsocus nomas Gurney (Psocoptera: Archipsocidae), silk-wrapped tree trunk. Photo by Drees.
Barklice, Cerastipsocus venosus Burmeister (Psocoptera: Psocidae). Photo by Drees.

ORDER PHTHIRAPTERA

Chicken body louse, Menacanthus stramineus (Nitzsch) (Phthiraptera: Menoponidae). TAEX file photo.
Head louse, Pediculus humanus capitus DeGeer (Phthiraptera: Pediculidae). Photo by B. Brewer.
Lice eggs or “nits”. Photo by Drees.

ORDER HEMPITERA

A giant water bug, Lethocerus sp. (Hemiptera: Belastomatidae). Photo by Drees.
A water boatman, Corixa sp. (Hemiptera: Corixidae). Photo by Drees.
A water strider, Gerris sp. (Hemiptera: Gerridae), adult. Photo by Drees.
A water strider, Gerris sp. (Hemiptera: Gerridae), nymph. Photo by Drees.
Azalea lace bug, Stephanitis pyriodes (Scott) (Hemiptera: Tingidae). Photo by Drees.
Sycamore lace bug, Corythuca ciliata (Say) (Hemiptera: Tingidae). Photo by Drees.
Hawthorne lace bug, Corythuca cydoniae (Fitch) (Hemiptera: Tingidae). Photo by Drees.
Lantana lace bug, Teleonemia scrupulosa Stål (Hemiptera: Tingidae). Photo by Drees.
Tarnished plant bug, Lygus lineolaris Palisot de Beauvois. Photo by Drees.
Garden fleahopper, Halticus bractatus (Say) (Hemiptera: Miridae). Photo by Drees.
A damsel bug, Nabis sp. (Hemiptera: Nabidae). Photo by W. Sterling.
A minute pirate bug, Orius sp. (Hemiptera: Anthocoridae), attacking cotton bollworm. Photo by W. Sterling.
Assassin bug, Zelus renardii (Kolenati) (Hemiptera: Reduviidae), preying on a cotton bollworm. Photo by W. Sterling.
Assassin bug, Microtomus purcis (Drury) (Hemiptera: Reduviidae). Photo by Drees.
A bloodsucking conenose bug or “kissing” bug, Triatoma sp. (Hemiptera: Reduviidae). Photo by Drees.
Wheel bug, Arilus cristatus (Linnaeus) (Hemiptera: Reduviidae), preying on a squash bug. Photo by Drees.
Chinch bugs, Blissus sp. (Hemiptera: Lygaeidae), nymphs and adults. Photo by Drees.
Large milkweed bug, Oncopeltus fasciatus (Dallas) (Hemiptera: Lygaeidae). Photo by Drees.
A lygaeid, Lygaeus sp. (Hemiptera: Lygaeidae). Photo by Jackman.
A big-eyed bug, Geocoris sp. (Hemiptera: Lygaeidae), adult. Photo by Drees.
A big-eyed bug, Geocoris sp. (Hemiptera: Lygaeidae), nymph. Photo by W. Sterling and S. Gravena.
Largus bug, Largus succinctus (Linnaeus) (Hemiptera: Largidae), adult. Photo by Drees.
Squash bug, Anasa tristis (DeGeer) (Hemiptera: Coreidae). Photo by J. V. Robinson.
Squash bugs, Anasa tristis (DeGeer) (Hemiptera: coreidae), nymphs on squash. Photo by Drees.
Coreid bug, Phthia picta (Drury) (Hemiptera: Coriidae) adult. Photo by Drees.
A coreid bug, Hypselonotus sp. (Hemiptera: Coreidae). Photo by Jackman.
Leaffooted bug, Leptoglossus phyllopus (Linnaeus) (Hemiptera: Coreidae). Photo by Drees.
A leaffooted bug, Narnia sp. (Hemiptera: Coreidae), on prickly pear cactus. Photo by Drees.
Coreid bug, Acanthocephala declivis (Say) (Hemiptera: Coreidae). Photo by Drees.
A broadheaded bug, Alydus sp. (Hemiptera: Alydidae), nymph on althea. Photo by Drees.
Redshouldered bug, Jadera haematoloma (Herrich-Schäffer), adult. Photo by Drees.
A burrowing bug, Pangaeus sp. (Hemiptera: Cydnidae). Photo by Drees.
A corimelaenid bug, Corimelaena sp. (Hemiptera: Thyreocoridae). Photo by Drees.
A shield bug, (Hemiptera: Scutellaridae). Photo by Drees.
Southern green stink bug, Nezara viridula (Linnaeus) (Hemiptera: Pentatomidae), adult on tomato. Photo by Drees.
Southern green stink bug, Nezara viridula (Linnaeus) (Hemiptera: Pentatomidae), nymph on soybean. Photo by Drees.
Southern green stink bug, Nezara viridula (Linnaeus) (Hemiptera: Pentatomidae), nymphs hatching from eggs. Photo by Drees.
Brown stink bug, Euschistus servus (Say) (Hemiptera: Pentatomidae). Photo by Jackman.
Harlequin bug, Murgantia histrionica (Hahn) (Hemiptera: Pentatomidae). Photo by Drees.
A “rough” stink bug or “tree” stink bug, Brochymena sp. (Hemiptera: Pentatomidae), nymph. Photo by Drees.
Rice stink bug, Oebalus pugnax (Fabricius) (Hemiptera: Pentatomidae), adult. Photo by Drees.
Spined soldier bug, Podisus maculiventris (Say) (Hemiptera: Pentatomidae), adult preying on cotton bollworm. Photo by W. Sterling.
Spined soldier bug, Podisus maculiventris (Say) (Hemiptera: Pentatomidae), nymph preying on cotton square borer. Photo by W. Sterling.

ORDER HOMOPTERA

A dog-day cicada, Tibicen spp. (Homoptera: Cicadidae). Photo by Drees.
Cicadas, (Homoptera: Cicadidae), cast skins. Photo by Drees.
Threecornered alfalfa hopper, Spissistilus festinus Say (Homoptera: Membracidae), adult. Photo by Drees.
Threecornered alfalfa hopper, Spissistilus festinus Say (Homoptera: Membracidae), nymph. Photo by Drees.
Two-lined spittlebug, Prosapia bicincta (Say) (Homoptera: Cercopidae). Photo by Drees.
Spittlebug, (Homoptera: Cercopidae), spit and nymph. Photo by Jackman.
A leafhopper, Graphocephala sp. (Homoptera: Cicadellidae). Photo by C. L. Barr.
A sharpshooter, Oncometopiasp. (Homoptera: Cicadellidae). Photo by Drees.
Plant hoppers, Ormenoides venusta (Melichar) (Homoptera: Flatidae). Photo by Drees.
Potato psyllids or tomato psyllids, Paratrioza cockerelli (Sulc) (Homoptera: Psyllidae). Photo by Drees.
A hackberry gall psyllid, Pachypsylla sp. (Homoptera: Psyllidae), galls. Photo by Drees.
A hackberry gall psyllid, Pachypsylla sp. (Homoptera: Psyllidae), nymph. Photo by Drees.
A hackberry gall psyllid, Pachypsylla sp. (Homoptera: Psyllidae), adults. Photo by C. L. Cole.
Yaupon psyllid gall, Gyropsylla ilicis (Ashmead) (Homoptera: Psyllidae). Photo by Drees.
Citrus blackfly, Aleurocanthus woglumi Ashby (Homoptera: Aleyrodidae), larvae and eggs. Photo by Drees.
Silverleaf whitefly, Bemisia argentifolii Bellows and Perring (Homoptera: Aleyrodidae), adult and pupal skin. Photo by Drees.
Silverleaf whitefly, Bemisia argentifolii Bellows and Perring (Homoptera: Aleyrodidae), eggs and larvae. Photo by Drees.
Cotton aphid or melon aphid, Aphis gossypii Glover (Homoptera: Aphididae). Photo by Drees.
Oleander aphids, Aphis nerii Boyer de Fonscolombe (Homoptera: Aphididae). Photo by Drees.
Wooly apple aphid, Eriosoma lanigerum (Hausmann) (Homoptera: Aphididae), damage to apple roots. Photo by J. W. Stewart.
Blackmargined aphids, Monellia caryella (Fitch) (Homoptera: Aphididae). Photo by Drees.
Green peach aphids, Myzus persicae (Sulzer) (Homoptera: Aphididae). Photo by Drees.
Greenbug, Schizaphis graminum (Rodani) (Homoptera: Aphididae). Photo by Drees.
Yellow sugarcane aphid, Sipha flava (Forbes) (Homoptera: Aphididae). Photo by Drees.
Russian wheat aphid, Diuraphis noxia (Mordvilko) (Homoptera: Aphididae). Photo by W. P. Morrison.
Corn leaf aphid, Rhopalosiphum maidis (Fitch) (Homoptera: Aphididae). Photo by Drees.
Crapemyrtle aphids, Tinocallis kahawaluokalani (Kirkaldy) (Homoptera: Aphididae). Photo by Drees.
Gall-forming aphids, Pemphigus sp. (Homoptera: Phylloxeridae). Photo by C. L. Cole.
“Wax” scales, Ceroplastes spp. (Homoptera: Coccidae). Photo by Drees.
Brown soft scale, Coccus hesperidum Linnaeus (Homoptera: Coccidae), on satsuma. Photo by Drees.
A lecanium scale, Lecanium sp. (Coccidae), on elm. Photo by Drees.
White peach scale, Pseudaulacaspis pentagona (Targioni-Tozzwtt) (Homoptera: Diaspididae). Photo by J. V. Robinson.
San Jose scale, Quadraspidiotus perniciosus (Comstock) (Homoptera: Diaspididae). Photo by C. L. Cole.
Euonymus scale, Unaspis euonymii (Comstock) (Homoptera: Diaspididae). Photo by Drees.
Cottony cushion scale, Icerya purchasi Maskell (Homoptera: Margarodidae). Photo by Drees.
Cochineal insect, Dactylopius coccus Costa (Homoptera: Dactylopiidae), on prickly pear cactus. Photo by Drees.
Citrus mealybug, Planococcus citri (Risso) (Homoptera: Pseudococcidae), on New Guinea impatiens. Photo by Drees.

ORDER THYSANOPTERA

Thrips, Thysanoptera: Thripidae), adult. Photo by Drees.
Onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae), nymph. Photo by Drees.

ORDER NEUROPTERA

A hellgrammite, Corydalus sp. (Neuroptera: Corydalidae). Photo by Drees.
A dobsonfly, Corydalus sp. (Neuroptera: Corydalidae), male. Photo by C. L. Cole.
A dobsonfly, Corydalus sp. (Neuroptera: Corydalidae). female. Photo by Drees.
A mantidfly, Mantispa sp. (Neuroptera: Mantispidae). Photo by Drees.
A green lacewing, Chrysoperla sp. (Neuroptera: Chrysopidae), larva. Photo by Sterling.
A green lacewing, Chrysoperla sp. (Neuroptera: Chrysopidae), adult. Photo by Drees.
An antlion, Myrmeleon sp. (Neuroptera: Myrmeleonidae), adult. Photo by Drees.
An antlion, Myrmeleon sp. (Neuroptera: Myrmeleonidae), larva. Photo by H. A. Turney.

ORDER COLEOPTERA

Tiger beetle, Cicindela ocellata rectilatera Chaudoir (Coleoptera: Cicindelidae). Photo by Drees.
Caterpillar hunter, Calosoma scrutator (Fabricius) (Coleoptera: Carabidae). Photo by Drees.
Ground beetle, Scarites subterraneus Fabricius (Coleoptera: Carabidae). Photo by Drees.
A ground beetle, Pasimachus sp. (Coleoptera: Cicindelidae). Photo by Jackman.
A diving beetle, Thermonectus sp. (Coleoptera: Dytiscidae). Photo by Drees.
A whirligig beetle, Gyrinus sp. (Coleoptera: Gyrinidae). Photo by Drees.
A water scavenger beetle, (Coleoptera: Hydrophilidae). Photo by Drees.
Stag beetle, Lucanus elaphus Fabricius (Coleoptera: Lucanidae), male. Photo by Drees.
Stag beetle, Lucanus placidus Say (Coleoptera: Lucanidae), female. Photo by Jackman.
Horned passalus or “betsy-beetle”, Odontotaenius disjunctus (Illiger) (Coleoptera: Passalidae). Photo by Drees.
A June beetle, Phyllophaga sp. (Coleoptera: Scarabaeidae), adult. Photo by G. McIlveen, Jr.
A masked chafer, Cyclocephala sp. (Coleoptera: Scarabaeidae), adult. Photo by Drees.
White grubs, (Coleoptera: Scarabaeidae), June beetle larvae. Photo by Drees.
Green June beetle, Cotinis nitida (Linnaeus) (Coleoptera: Scarabeidae). Photo by Drees.
Flower-feeding scarab, Euphoria kerni Haldemann (Coleoptera: Scarabeidae), adult (not black form). Photo by Drees.
Eastern Hercules beetle, Dynastes tityus (Linnaeus) (Coleoptera: Scarabeidae). Photo by Drees.
Elephant beetle or ox beetle, Strategus aloeus (Linnaeus) (Coleoptera: Scarabeidae), grubs in potting media. Photo by Drees.
“Rainbow scarab”, a dung beetle, Phanaeus vindex MacLachlan (Coleoptera: Scarabeidae), male (horned) and female. Photo by Drees.
Introduced dung beetle, Onthophagus gazella Fabricius (Coleoptera: Scarabeidae). Photo by Drees.
Metallic woodboring beetle, Chalcophora virginiensis (Drury) (Coleoptera: Buprestidae), adult common in pine trees. Photo by Drees.
A metallic woodboring beetle, Chrysobothris sp. (Coleoptera: Buprestidae), adult. Photo by Jackman.
A flatheaded woodborer, (Coleoptera: Buprestidae), larva. Photo by M. E. Rice.
Eyed click beetle, Alaus oculatus (Linnaeus) (Coleoptera: Buprestidae). Photo by Drees.
A wireworm, (Coleoptera: Elateridae), click beetle larva. Photo by Drees.
A firefly, Photinus sp. (Coleoptera: Lampyridae). Photo by Drees.
A dermestid beetle, (Coleoptera: Dermestidae), larva. Photo by Drees.
A “red cross” beetle, Collops sp. (Coleoptera: Melyridae), female. Photo by Drees.
A sap beetle, Carpophilus sp. (Coleoptera: Nitidulidae). Photo by Drees.
Sawtoothed grain beetle, Oryzaephilus surinamensis Linnaeus (Coleoptera: Cucujidae). Photo by Drees.
Lady beetles, (Coleoptera: Coccinellidae). Photo by Drees.
Convergent lady beetle, Hippodamia convergens Guerin-Meneville (Coleoptera: Coccinellidae), larva. Photo by Barr.
An ash gray lady beetle, Olla sp. (Coleoptera: Coccinellidae), two-spotted color form, adult feeding on aphid. Photo by W. Sterling.
Multi-colored Asian lady beetle, Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae), larva. Photo by Drees.
A tumbling flower beetle, Mordella sp. (Coleoptera: Mordellidae). Photo by Drees.
Confused flour beetle, Tribolium confusum Jacquelin duVal (Coleoptera: Tenebrionidae). Photo by H. A. Turney
Yellow mealworm, Tenebrio molitor Linnaeus (Coleoptera: Tenebrionidae), larva, pupa and adult. Photo by Drees.
A tenebrionid, Lobopoda sp. (Coleoptera: Tenebrionidae). Photo by Jackman.
A tenebrionid, Eleodes sp. (Coleoptera: Tenebrionidae). Photo by Jackman.
Blister beetles, Epicauta sp. (Coleoptera: Meloidae), mating on Texas mountain laurel. Photo by Drees.
Black blister beetle, Epicauta pennsylvanica (DeGeer) (Coleoptera: Meloidae), on goldenrod flowers. Photo by Drees.
A striped blister beetle, Epicauta sp. (Coleoptera: Meloidae). Photo by Drees.
“Ironclad” beetle, Zopherus nodulosus haldemani Horn (Coleoptera: Zopheridae). Photo by Drees.
Longhorned wood borer, Placosternus difficilis (Chevrolat) (Coleoptera: Cerambycidae), on goldenrod. TAEX file photo.
Longhorned wood borer, Aethecerinus wilsoni (Horn) (Coleoptera: Cerambycidae), on cotton. Photo by E. P. Boring.
A pine sawyer, Monochamus sp. (Coleoptera: Cerambycidae). Photo by J. W. Stewart.
A longhorned wood borer, Strangalia luteicornis (Fabricius) (Coleoptera: Cerambycidae). Photo by Drees.
A roundheaded borer, (Coleoptera: Cerambycidae), larva of a longhorned beetle. Photo by Drees.
Twig girdler, Oncideres pustulatus LeConte (Coleoptera: Cerambycidae), female. Photo by M. E. Rice
Cottonwood borer, Plectrodera scalator Fabricius (Coleoptera: Cerambycidae). Photo by C. Allen
Soybean stem borer, Dectes texanus LeConte (Coleoptera: Cerambycidae), larva. Photo by Drees.
Cowpea weevils, Callosobruchus maculatus (Fabricius) (Coleoptera: Bruchidae). Photo by J. W. Stewart.
Flea beetle, Disonycha fumata (LeConte) (Coleoptera: Chrysomelidae). Photo by Drees.
Flea beetles, (Coleoptera: Chrysomelidae), larvae common on prickly pear and Hercules club. Photo by Jackman.
Southern corn rootworm or spotted cucumber beetle, Diabrotica undecimpunctata howardi Barber (Coleoptera: Chrysomelidae), adult. Photo by Drees.
Southern corn rootworm or spotted cucumber beetle, Diabrotica undecimpunctata howardi Barber (Coleoptera: Chrysomelidae), larva on field corn roots. Photo by Drees.
Mexican corn rootworm, Diabrotica virgifera zea Krysan & Smith (Coleoptera: Chrysomelidae). Photo by Drees.
Banded cucumber beetle, Diabrotica balteata LeConte (Coleoptera: Chrysomelidae). Photo by Drees.
Elm leaf beetle, Pyrrhalta luteola (Müller) (Coleoptera: Chrysomelidae), larvae and eggs. Photo by M. E. Merchant
A leaf beetle, Derospidea brevicollis, larva on prickly ash and Hercules curb. Photo by Drees.
A leaf beetle, Trirhabda bacharidis (Weber) (Coleoptera: Chrysomelidae), on baccharis. Photo by Drees.
Cottonwood leaf beetle, Chrysomela scripta Fabricius (Coleoptera: Chrysomelidae), adult on willow. Photo by Drees.
Cottonwood leaf beetle, Chrysomela scripta Fabricius (Coleoptera: Chrysomelidae), larvae on willow. Photo by Drees.
Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae), adult on potato. Photo by Drees.
Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae), larvae on potato. Photo by Drees.
Yellowmargined leaf beetle, Microtheca ochrolema Stål (Coleoptera: Chrysomelidae), adult. Photo by Drees.
Yellowmargined leaf beetle, Microtheca ochrolema Stål (Coleoptera: Chrysomelidae), larva. Photo by Drees.
Golden tortoise beetle, Charidotella sexpunctata bicolor (Fabricius) (Coleoptera: Chrysomelidae), disturbed adult (undisturbed adults are golden). Photo by Drees.
A tortoise beetle, Chelymorpha sp. (Coleoptera: Chrysomelidae), larva. Photo by Drees.
Alfalfa weevil, Hypera postica (Gyllenhal) (Coleoptera: Curculionidae). Photo by Drees.
Boll weevil, Anthonomous grandis Boheman (Coleoptera: Curculionidae). Photo by W. Sterling.
Plum gouger, Coccotorus scutellaris LeConte (Coleoptera: Curculionidae), on Mexican plum. Photo by Drees.
Pecan weevil, Curculio caryae (Horn) (Coleoptera: Curculionidae), adult. TAEX file photo.
Pecan weevil, Curculio caryae (Horn) (Coleoptera: Curculionidae), larvae in pecan. Photo by D. Paxton.
An acorn weevil, Curculio sp. (Coleoptera: Curculionidae). Photo by H. A. Turney.
“Goldenheaded weevil”, Comspus auricephalus (Say) (Coleoptera: Curculionidae), adult on pecan; larvae are root feeders on legumes such as alfalfa. Photo by W. Ree, Jr.
Rice weevil, Sitophilus oryzae (Linnaeus) (Coleoptera: Curculionidae). Photo by H. A. Turney.
Rice water weevil, Lissorhoptrus oryzophilus Kuschel (Coleoptera:Curculionidae), adult on leaf scar. Photo by Drees.
A “Sesbania clown weevil”, Eudiagogus sp. (Coleoptera:Curculionidae). Photo by Drees.
Sweetpotato weevil, Cyclas formicarius elegantulus (Summers) (Coleoptera:Curculionidae). Photo by J. V. Robinson.
Southern pine bark beetle, Dendroctonus frontalis Zimmermann (Coleoptera:Scolytidae), pitch tubes. Photo by Drees.
Southern pine bark beetle, Dendroctonus frontalis Zimmermann (Coleoptera:Scolytidae), galleries. TAEX file photo.
Bark beetle, Ips sp. (Coleoptera: Scolytidae). TAEX file photo.
Asian ambrosia beetle, Xylosandrus crassiusculus (Motschulsky) (Coleoptera:Scolytidae), frass tubes produced by Asian ambrosia beetle. Photo by W. O. Ree, Jr.

ORDER MECOPTERA

Scorpionfly, Panorpa nuptialis Gerst (Mecoptera:Panorpidae), female. Photo by Drees.

ORDER SIPHONAPTERA

Cat flea, Ctenocephalides felis (Bouche) (Siphonaptera: Pulicidae), adult. Photo by R. Meola.
Cat flea, Ctenocephalides felis (Bouche) (Siphonaptera: Pulicidae), larva, pupa, adult and pupal case (bottom). Photo by Drees.

ORDER DIPTERA

A crane fly, (Diptera: Tipulidae) Photo by Drees.
Lovebugs, Plecia nearctica Hardy (Diptera: Bibionidae). Photo by Drees.
Hessian fly, Mayetiola destructor (Say) (Diptera: Cecidomyiidae), adult laying eggs. Photo by C. Hoelscher
Sorghum midge, Contarinia sorghicola (Coquillett) (Diptera: Cecidomyiidae). Photo by Drees.
A drain fly or moth fly, (Diptera: Psychodidae). Photo by Drees.
Asian tiger mosquito, Aedes albopictus (Skuse) (Diptera: Culicidae). Photo by Drees.
A mosquito, (Diptera: Culicidae), larva and pupa. Photo by Drees.
Blackflies, Simulium sp. (Diptera: Simuliidae), larvae. Photo by J. V. Robinson.
A midge, (Diptera: Chironomidae). Photo by Drees.
A horse fly, Tabanus sp. (Diptera: Tabanidae), adult female. Photo by Drees.
A deer fly, Chrysops sp. (Diptera: Tabanidae), adult female. Photo by Drees.
Black soldier fly, Hermetia illucens Linnaeus (Diptera: Stratiomyidae), adult. Photo by Drees.
Black soldier fly, Hermetia illucens Linnaeus, (Diptera: Stratiomyidae), larvae. Photo by G. McIlveen, Jr.
A robber fly, (Diptera: Asilidae). Photo by Drees.
A robber fly, Laphria sp. (Diptera: Asilidae). Photo by Drees.
A bee fly, (Diptera: Bombyliidae). Photo by Drees.
A long-legged fly, (Diptera: Dolichopodidae). Photo by Jackman.
A syrphid fly, (Diptera: Syrphidae), adult. Photo by Drees.
A syrphid fly, (Diptera: Syrphidae), maggot preying on yellow pecan aphid. Photo by Drees.
Serpentine leafminer, (Diptera: Agromyzidae), maggot damage to chrysanthemum. Photo by H. A. Turney
Small flies, (Diptera); Fungus gnats, (Sciaridae) (top); leafminer fly, (Agromyzidae) (middle left); shore fly, (Ephydridae)(middle right); fruit fly, (Drosophila) (bottom). Photo by Drees.
Eye gnats, Hippelates sp. (Diptera: Chloropidae). Photo by Drees.
House flies, Musca domestica Linnaeus (Diptera: Muscidae), mating. Photo by Drees.
Stable fly, Stomoxys calcitrans (Guenée). Photo by Drees.
A blow fly, Calliphora sp. (Diptera: Calliphoridae). Photo by Drees.
Horn fly, Haematobia irritans (Linnaeus) (Diptera: Muscidae), adults. Photo by Drees.
Horse bot fly, Gasterophilis intestinalis (DeGeer) (Diptera: Oesteridae). TAEX file photo.
Cattle grub, Hypoderma lineatum (de Villers) (Diptera: Oestridae), mature larva leaving host. Photo by C. L. Hoelscher.
A tachinid fly, Archytas sp. (Diptera: Tachinidae), adult of a caterpillar parasite. Photo by Drees.
A flesh fly, (Diptera: Sarcophagidae). Photo by Jackman.

ORDER TRICHOPTERA

A caddisfly, (Trichoptera), adult. Photo by Drees.

ORDER LEPIDOPTERA

Casemaking clothes moth, Tinea pellionella Linnaeus (Lepidoptera: Tineidae), larval cases. Photo by C. L. Cole.
Bagworm, Thyridopteryx ephemeraeformis (Haworth) (Lepidoptera: Psychidae), larval “bag” on arborvitae. Photo by Drees.
Tomato pinworm, Keiferia lycopersicella (Walsingham) (Lepidoptera: Gelechiidae), blotch-type mines and leaf-folding (left). Photo by Drees.
Diamondback moth, Plutella xylostella (Linnaeus) (Lepidoptera: Plutellidae), larva on cabbage. Photo by Drees.
Ermine moth or ailanthus webworm, Atteva punctella (Cramer) (Lepidoptera: Yponomeutidae). Photo by Drees.
Southwestern squash vine borer, Melittia calabaza (Lepidoptera: Sessidae), adult. Photo by G. McIlveen, Jr.
Southwestern squash vine borer, Melittia calabaza (Say) (Lepidoptera: Sessidae), larva. Photo by Drees.
Great leopard moth, Hypercompe scribonia (Stoll) (Lepidoptera: Arctiidae), adult. Photo by Drees.
Nantucket pine tip moth, Rhyacionia frustrana (Comstock) (Lepidoptera: Tortricidae ), adult. Photo by Drees.
Nantucket pine tip moth, Rhyacionia frustrana (Comstock) (Lepidoptera: Tortricidae ), caterpillar. TAEX file photo.
Puss caterpillar or “asp”, Megalopyge opercularis (J. E. Smith) (Lepidoptera: Megalopygidae). Photo by Drees.
Sugarcane borer, Diatraea sacchari (Zehntner) (Lepidoptera: Pyralidae), caterpillar. Photo by H. Browning.
Greater wax moth, Galleria mellonella (Linnaeus) (Lepidoptera: Pyralidae), larva. Photo by H. A. Turney.
Tropical sod webworm, Herpetogramma phaeopteralis Guenée (Lepidoptera: Pyralidae), adult. Photo by G. McIlveen, Jr.
Tropical sod webworm, Herpetogramma phaeopteralis Guenée (Lepidoptera: Pyralidae), caterpillar. Photo by G. McIlveen, Jr.
Genista caterpillar, Uresiphita (=Tholeria) reversalis (Guenée) (Lepidoptera: Pyralidae), caterpillar on Texas mountain laurel. Photo by Drees.
Lesser canna leafroller, Geshna cannalis (Quaintance) (Lepidoptera: Pyralidae). Photo by Drees.
Indian meal moth, Plodia interpunctata Hübner (Lepidoptera: Pyralidae), adult. Photo by Drees.
Canna leafroller, Calpodes ethius (Stoll) (Lepidoptera: Hesperiidae), caterpillar. Photo by Drees.
A skipper, (Lepidoptera: Hesperiidae). Photo by Drees.
Black swallowtail, Papilio polyxenes asterius Stoll (Lepidoptera: Papilionidae), adult. Photo by Drees.
Black swallowtail, Papilio polyxenes asterius Stoll (Lepidoptera: Papilionidae), caterpillar. Photo by Drees.
Black swallowtail, Papilio polyxenes asterius Stoll (Lepidoptera: Papilionidae), chrysalis. Photo by Drees.
Pipevine swallowtail, Battus philenor (Linnaeus) (Lepidoptera: Papilionidae). Photo by Drees.
Spicebush swallowtail, Papilio troilus Linnaeus (Lepidoptera: Papilionidae), caterpillar. Photo by Drees.
Giant swallowtail, Papilio cresphontes Cramer (Lepidoptera: Papilionidae), adult. Photo by Drees.
Orange dog, Papilio cresphontesCramer (Lepidoptera: Papilionidae), caterpillar. Photo by Drees.
Swallowtail butterflies, (Lepidoptera: Papilionidae). Photo by Drees.
Cloudless sulfur, Phoebis sennae eubule (Linnaeus) (Lepidoptera: Pieridae) Photo by Drees.
Alfalfa caterpillar, Colias eurytheme Boisduval (Lepidoptera: Pieridae), adult. Photo by C. L. Cole.
Cotton square borer or gray hairstreak, Strymon melinus Hübner (Lepidoptera: Lycaenidae). Photo by Drees.
Blues, (Lepidoptera: Lycaenidae), mating. Photo by J. Lee.
Great purple hairstreak, Atlides halesus Cramer (Lepidoptera: Lycaenidae). Photo by Drees.
Snout butterfly, Libytheana bachmanii (Kirtland) (Lepidoptera: Libytheidae). Photo by Drees.
Buckeye, Junonia (Precis) coenia (Hübner) (Lepidoptera: Nymphalidae). Photo by Drees.
Brush-footed butterflies, (Lepidoptera: Nymphalidae). Photo by Drees.
Red admiral, Vanessa atalanta (Linnaeus) (Lepidoptera: Nymphalidae), larva. Photo by Drees.
Pearl crescent, Phyciodes tharos (Drury) (Lepidoptera: Nymphalidae). Photo by Drees.
Hackberry butterfly, Asterocampa celtis (Boisduval & LeConte) (Lepidoptera: Nymphalidae). Photo by N. Mirro
Goatweed butterfly, Anaea aidea (Guérin-Meneville) (Lepidoptera: Nymphalidae). Photo by Drees.
Gulf fritillary, Agraulis vanillae incarnata (Riley) (Lepidoptera: Nymphalidae), adult. Photo by Drees.
Gulf fritillary, Agraulis vanillae incarnata (Riley) (Lepidoptera: Nymphalidae), caterpillar. Photo by Drees.
Zebra longwing, Heliconius charitonius vazquezae Comstock Brown (Lepidoptera: Heliconiidae). Photo by Drees.
Little wood satyr, Hermeuptychia (Euptychia) hermes (Fabricius) (Lepidoptera: Satyridae). Photo by Drees.
Monarch butterfly, Danaus plexippus (Linnaeus) (Lepidoptera: Danaidae), adult. Photo by Drees.
Monarch butterfly, Danaus plexippus (Linnaeus) (Lepidoptera: Danaidae), caterpillar. Photo by Drees.
Monarch butterfly, Danaus plexippus (Linnaeus) (Lepidoptera: Danaidae), pupating larva. Photo by D. Paxton.
Spring cankerworm, Paleacrata vernata (Peck) (Lepidoptera: Geometridae). Photo by R. Randell
Eastern tent caterpillar, Malacosoma americanum (Fabricius) (Lepidoptera: Lasciocampidae), tent. Photo by Drees.
Forest tent caterpillars, Malacosoma disstria Hübner (Lepidoptera: Lasciocampidae), on tree trunk. Photo by G. McIlveen, Jr.
Luna moth, Actias luna (Linnaeus) (Lepidoptera: Saturniidae), adult. Photo by Drees.
Luna moth, Actias luna (Linnaeus) (Lepidoptera: Saturniidae), caterpillar. Photo by Drees.
Imperial moth, Eacles imperialis (Drury) (Lepidoptera: Saturniidae), adult. Photo by Jackman.
Imperial moth, Eacles imperialis (Drury) (Lepidoptera: Saturniidae), caterpillar. Photo by Drees.
Cecropia moth, Hyalophora cecropia (Linnaeus) (Lepidoptera: Saturniidae), adults. Photo by Drees.
Cecropia moth, Hyalophora cecropia (Linnaeus) (Lepidoptera: Saturniidae), caterpillar. Photo by Drees.
Io moth, Automeris io (Fabricius) (Lepidoptera: Saturniidae), adult. Photo by R. Parker.
Io moth, Automeris io (Fabricius) (Lepidoptera: Saturniidae), caterpillar. Photo by Drees.
Polyphemus moth, Antheraea polyphemus (Cramer) (Lepidoptera: Saturniidae), adult. Photo by Drees.
Catalpa sphinx, Ceratomia catalpae (Boisduval) (Lepidoptera: Sphingidae), caterpillar. Photo by Drees.
Whitelined sphinx, Hyles lineata (Fabricius) (Lepidoptera: Sphingidae), adult. Photo by Drees.
Walnut sphinx, Laothoe juglandis (J. E. Smith) (Lepidoptera: Sphingidae), adult. Photo by Drees.
Tomato hornworm, Manduca quinquemaculata (Haworth) (Lepidoptera: Sphingidae), caterpillar. TAEX file photo.
Tomato hornworm, Manduca quinquemaculata (Haworth) (Lepidoptera: Sphingidae), adult. Photo by Drees.
Walnut caterpillars, Datana integerrima Grote and Robinson (Lepidoptera: Notodontidae), early stage instar caterpillars. Photo by H.A. Turney.
Yellownecked caterpillar, Datana ministra (Drury) (Lepidoptera: Notodontidae), on oak. Photo by Drees.
Unicorn caterpillar, Schizura unicornis (J. E. Smith) (Notodontidae), on swamp rose. Photo by Drees.
Whitemarked tussock moth, Orgyia(=Hemerocampa) leucostigma (J. E. Smith) (Lepidoptera: Lymantriidae), caterpillar. Photo by Drees.
Fall webworm, Hyphantria cunea (Drury) (Lepidoptera: Arctiidae), caterpillar. Photo by C. L. Barr.
Fall webworm, Hyphantria cunea (Drury) (Lepidoptera: Arctiidae), web on pecan. Photo by Drees.
Virgin tiger moth, Grammia virgo (Linnaeus) (Lepidoptera: Arctiidae), adult. Photo by Drees.
Yellowcollared scape moth, Cisseps fulvicollus (Hübner)(Lepidoptera: Ctenuchinae). Photo by Drees.
A cutworm, (Lepidoptera: Noctuidae), on corn. Photo by Drees.
Corn earworm, Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae), in sweet corn. Photo by G. McIlveen, Jr.
Beet armyworm, Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae), caterpillar in cotton boll. Photo by A. Knutson.
Fall armyworm, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae), caterpillar. Photo by Drees.
A noctuid moth, Melipotis sp. (Lepidoptera: Noctuidae). Photo by Drees.
Yellowstriped armyworm, Spodoptera ornithogalli (Guenée) (Lepidoptera: Noctuidae), caterpillar. Photo by Drees.
Cabbage looper, Trichoplusia ni (Hübner) (Lepidoptera: Noctuidae). Photo by Drees.

ORDER HYMENOPTERA

A sawfly, (Hymenoptera: Cimbicidae, Diprionidae or Tenthredinidae), larvae on oak. Photo by Drees.
Pigeon tremex, Tremex columba Linnaeus (Hymenoptera: Siricidae). Photo by Drees.
An ichneumon wasp, Megarhyssa macrurus (Linnaeus) (Hymenoptera: Ichneumonidae), parasitic on Pigeon tremex, Tremex columba Linnaeus (Hymenoptera: Siricidae). Photo by Drees.
An ichnuemon wasp, (Hymenoptera: Ichneumonidae). Photo by Drees.
A parasitic wasp, (Hymenoptera: Braconidae), cocoons on a tomato hornworm. Photo by W. Sterling.
A cynipid wasp, (Hymenoptera: Cynipidae), gall on oak. Photo by Drees.
Cicada killer, Sphecius speciosus (Drury) (Hymenoptera: Sphecidae). Photo by Drees.
A sand wasp, Bembix sp. (Hymenoptera: Sphecidae). Photo by Drees.
A tarantula hawk, Pepsis sp. (Hymenoptera: Pompilidae). Photo by Drees.
A blue mud dauber, Chalybion californicum Saussure (Hymenoptera: Sphecidae). Photo by G. McIlveen, Jr.
Black and yellow mud dauber, Chalybion caementarium (Drury) (Hymenoptera: Sphecidae). Photo by Jackman.
A potter wasp, Eumenes sp. (Hymenoptera: Vespidae: Eumeninae). Photo by Jackman.
A cuckoo wasp, (Hymenoptera: Chrysididae), parasitic on mud dauber wasps and groundnesting bees. Larvae are external parasites of mature larvae. Photo by Drees.
A leafcutting bee, Megachile sp. (Hymenoptera: Megachilidae), adult. Photo by Drees.
A carpenter bee, Xylocopa spp. (Hymenoptera: Xylocopidae), nest opening. Photo by G. McIlveen, Jr.
A bumble bee, Bombus spp. (Hymenoptera: Apidae), male. Photo by Drees.
Honey bee, Apis mellifera Linnaeus (Hymenoptera: Apidae), worker. Photo by Drees.
Honey bee, Apis mellifera Linnaeus (Hymenoptera: Apidae), nest in wall void. Photo by A. Sparks, Jr.
Honey bee, Apis mellifera Linnaeus (Hymenoptera: Apidae), colony with queen. Photo by Drees.
Red velvet ant or “cow killer”, Dasymutilla occidentalis (Linnaeus) (Hymenoptera: Mutillidae). Photo by Drees.
A tiphiid, Myzinum sp. (Hymenoptera: Tiphiidae) male, parasitic on white grubs; (Coleoptera: Scarabiidae). Photo by Drees.
Baldfaced hornet, Dolichovespula maculata (Linnaeus) (Hymenoptera: Vespidae). Photo by G. McIlveen, Jr.
Baldfaced hornet, Dolichovespula maculata (Linnaeus) (Hymenoptera: Vespidae), nest. Photo by G. McIlveen, Jr.
A paper wasp, Polistes exclamans Viereck (Hymenoptera: Vespidae), nest. Photo by Drees.
A paper wasp called “red wasp”, Polistes carolina (Linnaeus) (Hymenoptera: Vespidae). Photo by G. McIlveen, Jr.
A paper wasp, Polistes metricus Say (Hymenoptera: Vespidae). Photo by Drees.
Southern yellowjackets, Vespula squamosa (Drury) (Hymenoptera: Vespidae), at nest entrance. Photo by G. McIlveen, Jr.
Southern yellowjackets, Vespula squamosa (Drury) (Hymenoptera: Vespidae), developmental stages; larval stages (instars), pupae, adult. Photo by Drees.
Texas leafcutting ant, Atta texana (Buckley) (Hymenoptera: Formicidae), winged male reproductive. Photo by Drees.
Texas leafcutting ant, Atta texana (Buckley) (Hymenoptera: Formicidae), worker carrying leaves. Photo by Jackman.
Texas leafcutting ant or “town ant”, Atta texana (Buckley) (Hymenoptera: Formicidae), mounds. Photo by Drees.
Carpenter ants, Camponotus sp. (Hymenoptera: Formicidae), workers at wet sugar. Photo by Drees.
Black carpenter ant, Camponotus pennsylvanicus (Fabricius) (Hymenoptera: Formicidae), worker. Photo by Drees.
Pharoah ant, Monomorium pharaonis (Linnaeus) (Hymenoptera: Formicidae), worker. Photo by Drees.
Crazy ant, Paratrechina longicornis (Latreille) (Hymenoptera: Formicidae). Photo by Drees.
Pyramid ant, Dorymyrmex insanus (Buckley) (Hymenoptera: Formicidae), nest. Photo by Drees.
Red harvester ant, Pogonomyrmex barbatus Smith (Hymenoptera: Formicidae), workers at nest entrance. Photo by Drees.
Red imported fire ant, Solenopsis invicta Buren (Hymenoptera: Formicidae), workers attacking pink bollworm. Photo by W. Sterling.
Red imported fire ant, Solenopsis invicta Buren (Hymenoptera: Formicidae), mound. Photo by Drees.

NON-INSECT ARTHROPODS

ORDER SCORPIONIDA

Striped bark scorpion, Centruoides vittatus (Say) (Scorpionida: Buthidae). Photo by G. McIlveen, Jr.

ORDER UROPYGI

“Vinegaroon”, Mastigoproctus giganteus (Lucas) (Uropygi: Thelyphonida). Photo by Drees.

ORDER ARANEAE

A tarantula, Aphonopelma spp. (Araneae: Theraphosidae). Photo by Jackman.
A recluse spider, Loxosceles sp. (Araneae: Sicarlidae), female. Photo by Jackman.
Southern black widow, Latrodectus mactans Fabricius (Araneae: Theridiidae). Photo by Jackman.

ORDER OPILIONES

A harvestman, (Opiliones). Photo by Drees.

ORDER ACARI

Lone star tick, Amblyoma americanum (Linnaeus) (Acari: Ixodidae). Photo by Jackman.
Twospotted spider mite, Tetranynchus urticae Koch (Acari: Tetranychidae). Photo by Drees.
- a – Tomato russet mite, Aculops lycopersici (Massee), (Acari:Eriophyidae). No photo available.
- a – Chiggers, Trombicula (Eutrombicula) alfreddugesi (Oudemans) and T. splendens Ewing, (Acari:Trombiculidae), no photo available.
- a – Straw itch mite, Pyemotes tritici (La Grèze-Fossat & Montane), (Acari:Pyemotidae). No photo available.
- a – Broad mites, Polyphagotarsonemus latus (Banks), no photo available.
House dust mites, Dermatophagoides spp., photo courtesy of Acarology Lab, Ohio State University.
Honey bee mite, Acarapsis woodi Rennie
Varroa mite, Varroa jacobsoni (Parasitiformes: Varroidae), on honey bees. Photo by J.G. Thomas.

ORDER PSEUDOSCORPIONES

A pseudoscorpion, (Pseudoscorpiones). Photo by Drees.

ORDER ISOPODA

Sowbugs and pillbugs, (Isopoda). Photo by Drees.
A “scud”, (Amphipoda). Photo by Drees.

CLASS CHILOPODA AND CLASS DIPLOPODA

A centipede, Scolopendra sp. (Chilopoda Scolopendromorpha: Scolopendridae). Photo by Drees.
A millipede, (Diplopoda). Photo by Jackman.
A millipede, (Diplopoda). Photo by Drees.