Trichiosomites Brues, 1908

Archibald, S. Bruce & Rasnitsyn, Alexandr P., 2023, Cimbicidae (Hymenoptera, ‘ Symphyta’) in the Paleogene: revision, the new subfamily Cenocimbicinae, and new taxa from the Eocene Okanagan Highlands, Zootaxa 5278 (1), pp. 1-38 : 26

Genus Trichiosomites Brues, 1908

Fig. 24–25

Trichiosomites Brues, 1908, p. 259

Trichosomites: Abe & Smith, 1991, p. 87, misspelling

Type species. Trichiosomites obliviosus Brues, 1908 .

Emended diagnosis. Distinct from other Abiinae by its very wide pterostigma and second flagellar segment forming the first part of the club.

Remarks. Trichiosomites obliviosus fits well with the Abiinae . Its distinctly segmented club excludes Corynidinae and Pachylostictinae , and widely separated anal cells exclude Cimbicinae . It is the oldest representative of the subfamily.

Figures

FIGURE 24. Trichiosomites obliviosus Brues holotype, MCZ-2036, Abiinae, from the Florissant Formation:A, photograph; B, drawing; C, drawing of right forewing; D, drawing of left forewing. Scale bars A–B, 5 mm; C–D, 3 mm.

FIGURE 25. Trichiosomites obliviosus Brues, UCM-4570, Abiinae, from the Florissant Formation:A, photograph; B, drawing; C, drawing of right forewing; D, drawing of left forewing. Scale bars A–B, 5 mm; C–D, 3 mm.