Texas Cooperative Extension, Texas A&M University System
Department of Entomology, Texas A&M University

Order Pseudoscorpiones


The body of pseudoscorpions is divided into two general regions; the head-thorax (cephalothorax) and the abdomen. The body and appendages have many setae. The cephalothorax is covered by a shield or carapace that is not segmented. There is usually one or more pairs of eyes on the edge of the cephalothorax. There are six conspicuous appendages on the cephalothorax; the chelicerae, the palps, and 4 pairs of walking legs. Chelicerae are short and have a clasping mechanism with a fixed and a movable finger. The pedipalps are longer and have a claw that resembles that of a scorpion. The abdomen has 12 segments but the last two are reduced and inconspicuous. They do not have a long tail like scorpions and they do not sting. Pseudoscorpions are quite small with a body length generally under 3 mm. There are 33 species in Texas.

See pseudoscorpion.

A pseudoscorpion.  Photo by Drees.
Click on image to enlarge
A pseudoscorpion,
Photo by Drees.

From the book:
Field Guide to Texas Insects,
Drees, B.M. and John Jackman,
Copyright 1999, Gulf Publishing Company,
Houston, Texas

A Field Guide to Common Texas Insects, Bastiaan M. Drees and John A. Jackman.
Texas A&M University
Texas A&M University •  Department of Entomology  •  412 Heep Center, TAMU 2475
College Station, TX 77843-2475 • 979.845.2516
Department of Entomology at Texas A&M University