Genus Trematocephalus Dahl, 1886
(头Ŀeø)
Type species. Erigone perforata Thorell, 1871; gender masculine.
Remark. Trematocephalus comprises four species (including one species known from males and one from females) distributed in Caucasus, China, Europe, Iran, Russia (Europe to Far East), Sri Lanka and Turkey (WSC 2024).