Miagrammopes longicaudus is a species of spider in the family Uloboridae. It is a southern African endemic commonly known as the long-tailed single-line web spider.
Distribution Miagrammopes longicaudus is found only in South Africa. The species is known only from the type locality given as Caffraria. Caffraria was a name given first to southern Africa, then to Xhosaland (the area between the Kei and Keiskamma rivers) and subsequently to the Eastern Cape Province, but no exact locality is known.
Habitat and ecology The habitat and ecology of this species are unknown.
Description
Conservation Miagrammopes longicaudus is listed as Data Deficient by the South African National Biodiversity Institute due to the lack of data on the species. Types need to be re-examined and redescribed, and more sampling is needed.
Taxonomy Miagrammopes longicaudus was described by O. Pickard-Cambridge in 1882 from Caffraria. The species has not been revised and is known from both sexes but poorly described.
References