Katatopygia antica (Garrett, 1924) Garrett, 1924

Martinsson, Svante & Kjaerandsen, Jostein, 2012, Katatopygia gen. n., a monophyletic branch segregated from Boletina (Diptera, Mycetophilidae), ZooKeys 175, pp. 37-67 : 42-43

Katatopygia antica (Garrett, 1924) comb. n. Fig. 1A8 A–C

Boletina anticus Garrett, 1924: 165

Diagnostic characters.

Most similar to Katatopygia antoma , with which it shares the projected dorsomesal corners of the male gonocoxites. Distinguished from Katatopygia antoma by having parameres fused, a small median tooth on hypandrial lobe and brown tip of halter.

Re-description.

Male. Wing length 5.0-5.5 mm.

Head brown; palps and mouthparts pale. Antenna with scape brown, pedicel and basal part of first flagellomere pale, rest of flagellum brown.

Thorax brown with distinct, dark brown mesonotal stripes, humeral area yellow. Antepronotum brown; anepisternum brown; preepisternum brown; laterotergite brown; mediotergite brown. Halter pale with apical part of knob brown.

Wings weakly brownish tinged; veins yellowish brown; stem of M approximately 1.7 times the length of ta; Sc2 present; Sc bare and ending in C at or slightly before base of Rs; C ending at apex of R5.

Legs pale with joints darker.

Abdomen dark brown often with narrow pale apical bands on tergites II-IV.

Terminalia brown. Gonocoxite with dorsomesal corner forming a mesocaudally directed horn-like processus, distinctly more projected than the ventromesal corner. Hypandrial lobe well developed and only shallowly emarginated medially with a small sharp medial tooth. One slender paramer, bearing microtrichia. Tergite IX subrectangular, with a sclerotized mesal suture. The apical processus on gonostylus approximately half as long as the diameter of gonostylus and slightly branched with two strong setae. Interior surface of gonostylus without strong setae.

Female. Coloration as in male, with brown tip of halter. Terminalia not studied.

Distribution.

Nearctic: Canada, British Columbia.

Remarks.

Only known with the type material.

Type material studied.

Syntype series. Canada: B. C. Michel, Wilson Creek. 21 Sep (year unknown pre 1925), leg. C. Garrett - 2 males (CNC, 1 pinned, JKJ-SPM-057739, and 1 pinned with abdomen mounted on separate slide, JKJ-SPM-057740); 24 Sep (year unknown pre 1925), leg. C. Garrett - 3 females (CNC, pinned, JKJ-SPM-057743-45).