Stygnommatidae is a small neotropical family of the harvestman infraorder Grassatores with about thirty described species. (2007): Stygnommatidae. Roewer, 1923. In: Pinto-da-Rocha et al. 2007: 229ff
Description Stygnommatidae range from three to six millimeters in body length. Some species have chelicerae that effectively double their length. The pedipalps are strong, enlarged and armed. The legs are relatively short. These harvestmen dwell in litter, with some species found in caves.
Distribution Members of this family are found in the neotropics from Mexico to Brazil. Some species are found in southern Florida and others in Indonesia and Malaysia, but it is not sure that these belong into this family.
Relationships The monophyly of this family is disputed. Its closest relatives within the Samooidea are Samoidae, Biantidae and Podoctidae.
Name The name of the type genus is combined from the genus name Stygnus and Ancient Greek omma "eye", referring to the eyes that are separated like in Stygnus.
Species
The following belong in Stygnomma Roewer, 1912 Stygnomma annulipes (Goodnight & Goodnight, 1947) — Mexico Stygnomma batatalense González-Sponga, 2005 Stygnomma belizense Goodnight & Goodnight, 1977 — Belize Stygnomma bispinatum Goodnight & Goodnight, 1953 — Mexico Stygnomma cubiroense González-Sponga, 2005 Stygnomma delicatulum Rambla, 1976 — Ecuador Stygnomma fiskei Rambla, 1969 — Jamaica Stygnomma fuentesi González-Sponga, 2005 Stygnomma fuhrmanni Roewer, 1912 — Colombia, Costa Rica, Panama, Venezuela Stygnomma furvum González-Sponga, 1987 — Venezuela Stygnomma gracilitibiae M. A. González-Sponga, 1987 — Venezuela Stygnomma granulosum (Goodnight & Goodnight, 1947) — Belize (=Stygnomma maya Goodnight & Goodnight, 1951) Stygnomma jajoense González-Sponga, 2005 Stygnomma joannae Rambla, 1976 — Ecuador Stygnomma larense González-Sponga, 1987 — Venezuela Stygnomma leleupi Rambla, 1976 — Ecuador Stygnomma macrochelae González-Sponga, 2005 Stygnomma monagasiense Soares & Avram, 1981 — Venezuela Stygnomma ornatum González-Sponga, 1987 — Venezuela Stygnomma planum Goodnight & Goodnight, 1953 — Mexico Stygnomma purpureum M. A. González-Sponga, 1987 — Venezuela Stygnomma salmeronense González-Sponga, 2005 Stygnomma solisitiens M. A. González-Sponga, 1987 — Venezuela Stygnomma spiniferum (Packard, 1888) Stygnomma spiniferum spiniferum (Packard, 1888) — Florida, Jamaica Stygnomma spiniferum bolivari (Goodnight & Goodnight, 1945) — Cuba Stygnomma spiniferum tancahense Goodnight & Goodnight, 1951 — Mexico, Belize Stygnomma spinipalpis Goodnight & Goodnight, 1953 — Mexico Stygnomma spinula (Goodnight & Goodnight, 1942) — Puerto Rico Stygnomma teapense Goodnight & Goodnight, 1951 — Mexico Stygnomma toledense Goodnight & Goodnight, 1977 — Belize Stygnomma truxillense M. A. González-Sponga, 1987 — Venezuela Stygnomma tuberculatum Goodnight & Goodnight, 1973 — Mexico
Footnotes
References 's Biology Catalog: Stygnommatidae (eds.) (2007): Harvestmen - The Biology of Opiliones. Harvard University Press