| Ceratolasmatidae | |
|---|---|
_-_ZooKeys-311-019-g002-crop.jpeg) | |
| Acuclavella shoshone | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Arachnida |
| Order: | Opiliones |
| Superfamily: | Ischyropsalidoidea |
| Genus: | Ceratolasmatidae Shear, 1986 |
| Species | |
| |
| Diversity | |
| 11 species | |
The Ceratolasmatidae are a family of harvestmen with eleven described species.
The monophyly of this family is questionable; it is composed of three possibly monophyletic groups:
- Ceratolasma and Acuclavella are four to six millimeters long, with moderately short legs and short pedipalps. These two genera are closely related to Ischyropsalis (Ischyropsalididae).
- Hesperonemastoma species range from one to two millimeters in body length. They have similarities to Nemastoma, which occurs in the Old World (hespero = "west" alludes to the occurrence in the New World). It seems to be more closely related to Taracus (Sabaconidae) than to Ceratolasma.
- Crosbycus has a body length of less than one millimeter. The pedipalps are long and very thin. Its moderately long legs are densely covered with setae, spikes and trichomes. Crosbycus should possibly be placed in its own family.