Language: English
Thirty-seven species and one subspecies of Linyphiidae (Araneae) were collected in Tanzanian mountain areas, mainly from the montane forest zone. Some data on the geology, climate and vegetation of the study areas are provided and collecting methods are described.
One genus (Ulugurella), twenty-seven species and one subspecies are described as new: Walckenaeria allopatriae ♂♀, W. tanzaniensis ♀, Ulugurella longimana ♂♀, Elgonella basalis ♂♀, E perturbatrix ♂♀, E. annulata ♂♀, E. projecta ♂♀, E. stoltzei ♀, E. rungwensis ♀, Atypena mira ♂, A.pilosa ♂, A. simplex ♂♀, A. pileata ♂♀, Toschia casta ♂, T.(?) virgo ♀, Oedothorax usitatus ♂, Ophrynia galeata ♂♀, Ophrynia glukwangulensis ♂♀, O .summicola ♂♀, O.revelatrix ♂♀, O. infecta ♂, O. rostrata ♂♀, O. uncata ♂♀, Bursellia paghi ♂♀, Lepthyphantes howelli ♂♀, Mecynidis antiqua ♂♀, M. scutata ♂♀, M. spiralis ♂, genus (?) species (?). The female of Ceratinopsis holmi Jocqué, 1981 is here described for the first time.