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Family PholcidaeWithout doubt, the most important family thathas invaded caves in Mexico and Central America isthe Pholcidae. A total of 94 species of pholcid isalready known to inhabit caves in this region; 19 ofthese are troglobites.Seven described species of the genus Coryssocnemishave been identified from caves in Mexico(Gertsch, 1971a, 1973b; Brignoli, 1974b): C. abernathyiGertsch from San Luis Potosi, Tamaulipas,Oaxaca, and Puebla; C. clarus Gertsch from Tamaulipas;C. facetus Gertsch and C. pecki Gertsch fromChiapas; C. iviei Gertsch from Hidalgo, Queretaro,and San Luis Potosi; C. placidus Gertsch from Veracruz;and C. simoni O. P.-Cambridge from Coahuila,Hidalgo, Nuevo Leon, Oaxaca, and Queretaro. Severalundescribed species have been collected recently.These spiders are usually found hanging in webs,usually in the vicinity of the cave entrance. See Fig.36 for the distribution of the species of this genusin Mexican caves.The genus Physocyclus is known from cavesthroughout much of Mexico (Gertsch, 1971a, 1973b;Brignoli, 1974b), although many species appear to be1 2••MEXICOGUATEMALAFig. 34.-Distribution of troglophilic and troglobitic spiders of the families Ochyroceratidae and Telemidae: I, Theotimapura; 2, Matta sbordonii; 3, Ochyrocera fagei; 4, M. mckenziei; 5, Theotima n. sp.; 6, Ochyrocera n. sp.; 7, Theotima martha;8, Telema mayana; 9, o. formosa.145