Stygnommatidae
Stygnommatidae is a small neotropical family of the harvestman infraorder Grassatores with about thirty described species.
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, 1912Stygnomma annulipes — MexicoStygnomma batatalense González-Sponga, 2005Stygnomma belizense Goodnight & Goodnight, 1977 — BelizeStygnomma bispinatum Goodnight & Goodnight, 1953 — MexicoStygnomma cubiroense González-Sponga, 2005Stygnomma delicatulum Rambla, 1976 — EcuadorStygnomma fiskei Rambla, 1969 — JamaicaStygnomma fuentesi González-Sponga, 2005Stygnomma fuhrmanni Roewer, 1912 — Colombia, Costa Rica, Panama, VenezuelaStygnomma furvum González-Sponga, 1987 — VenezuelaStygnomma gracilitibiae M. A. González-Sponga, 1987 — VenezuelaStygnomma granulosum — Belize Stygnomma jajoense González-Sponga, 2005Stygnomma joannae Rambla, 1976 — EcuadorStygnomma larense González-Sponga, 1987 — VenezuelaStygnomma leleupi Rambla, 1976 — EcuadorStygnomma macrochelae González-Sponga, 2005Stygnomma monagasiense Soares & Avram, 1981 — VenezuelaStygnomma ornatum González-Sponga, 1987 — VenezuelaStygnomma planum Goodnight & Goodnight, 1953 — MexicoStygnomma purpureum M. A. González-Sponga, 1987 — VenezuelaStygnomma salmeronense González-Sponga, 2005Stygnomma solisitiens M. A. González-Sponga, 1987 — VenezuelaStygnomma spiniferum Stygnomma spinipalpis Goodnight & Goodnight, 1953 — MexicoStygnomma spinula — Puerto RicoStygnomma teapense Goodnight & Goodnight, 1951 — MexicoStygnomma toledense Goodnight & Goodnight, 1977 — BelizeStygnomma truxillense M. A. González-Sponga, 1987 — VenezuelaStygnomma tuberculatum Goodnight & Goodnight, 1973 — Mexico