Ceratolasmatidae

• Ceratolasma and Acuclavella are four to six millimeters long, with moderately short legs and short pedipalps. These two genera are closely related to Ischyropsalis.
• Hesperonemastoma species range from one to two millimeters in body length. They have similarities Nemastoma, which occurs in the Old World. It seems to be more closely related to Taracus 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.

  Distribution

Name

Species

• Acuclavella Shear, 1986
• * Acuclavella cosmetoides Shear, 1986 -- Idaho
• * Acuclavella merickeli Shear, 1986 -- Idaho
• * Acuclavella quattuor Shear, 1986 -- Idaho
• * Acuclavella shoshone Shear, 1986 -- Idaho
• Ceratolasma Goodnight & Goodnight, 1942
• * Ceratolasma tricantha Goodnight & Goodnight, 1942 -- Oregon
• Crosbycus Roewer, 1914
• * Crosbycus dasycnemus -- British Columbia and China
• Hesperonemastoma Gruber, 1970
• * Hesperonemastoma pallidimaculosum -- Alabama
• * Hesperonemastoma inops -- cave in Kentucky
• * Hesperonemastoma modestum -- western United States
• * Hesperonemastoma packardi -- cave in Utah
• * Hesperonemastoma kepharti -- North Carolina

  Footnotes