Brunetti, E. 1918. Revision of the Oriental Tipulidae with descriptions of new species, Part 2. Records of the Indian Museum 15: 316.
The genus Trentepohlia is extensive, being represented by nearly 300 species and strongly represented in the Oriental Region. The species of Trentepohlia may be separated from other genera by the characteristic shape of the singular male gonostylus and characters of the wing venation that shows the loss of the R-M crossvein and the deflection of CuA2 towards A1, at times intersecting and closing off cell cup. The subgeneric divisions of Trentepohlia are based on variation in the wing venation and are easily separated based on various combinations of wing characteristics.
The species of Trentepohlia (Anchimongoma) are separated from the remaining subgenera of Trentepohlia based on the following combination of wing characters: two branches of Rs to wing margin, one Medial veins to wing margin, cell dm absent, two Cubital veins to wing margin, ÇuA2 directed towards A1 but not closing cell cup. The species of T. (Anchimongoma) are typically long and slender and commonly have the tarsal segemnts of the legs tipped with white.
Head: Anterior vertex not produced. Rostrum length less than that of the remaining head. Maxillary palpus length less than that of remaining head, palpomeres subequal. Antennae: 16 articles; antenomeres variable (oval, cylindrical, or moniliform).
Wing: Subhyline to lightly suffused; stigma typically absent, uncommonly present; anal angle present. Wing venation: Sc long, Sc1 removed from Sc2, Sc1 ending after split of Rs; R1+2 subequal to R2, R2 typically directed toward wing base; two branches of Rs (R3, R4+5) attaining wing margin; r-m crossvein absent; one Medial vein (M1+2) attaining wing margin; cell dm absent; two Cubital veins (CuA1, CuA2) attaining wing margin, tips divergent, CuA2 directed toward A2 at wing tip nearly closing cell cup; two Anal veins (A1, A2) attaining wing margin.
Male hypopygium: Male hypopygium: 9th tergite (9t) and sternite (9s) variable, typically a fused ring but may be separated by lateral margin or ventral division. Mesoventral lobe of gonocoxite present or absent. Gonostylus singular; style a broad flattened sclerotized lobe, a tooth present at about 1/3 the length of the style, tip variously produced. Aedeagus simple with one or two terminal openings. Proctriger simple, without modification
Trentepohlia (Anchimongoma) is a small subgenus that is known from the insular regions of the Oriental and Australian/Oceanic Regions. Three of the four described Oriental species are found throughout the islands of the Philippines and Indonesia and Malaysia, with the remaining species from India. The remaining non-Oriental species is from Papua New Guinea in the Australian/Oceanic Region.
The larval preferences of this subgenus are unknown.