Harvestmen have a globular body. They can be separated from spiders which have two distinct body segments because harvestmen have the entire body as one unit. The abdomen is distinctly segmented and the two eyes are mounted on a large dorsal tubercle on the top surface of the body (carapace). While most species have extremely long spindly legs, there are species with shorter legs.
Worldwide, there are 37 families of harvestmen. Eighteen species are reported from Texas. Members of only one family, Phalangiidae, are properly referred to as “daddy longlegs.”