Gimnomera cuneiventris

• Main Authors: Chagnon, Marie-Eve, Sinclair, Bradley J.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2020
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Scathophagidae; Gimnomera; Gimnomera cuneiventris; Alta; Giles; Herschel Island; Hudson; Hudson Bay; Kugluktuk; Malla; North Fork; North Fork Pass; Norway; Seta; Virginia Falls; Enontekis; Alaska
• Online Access: https://zenodo.org/record/4511463; https://doi.org/10.5281/zenodo.4511463

Gimnomera cuneiventris (Zetterstedt) (Figs 5, 6, 33) Cordylura cuneiventris Zetterstedt, 1846: 2020. Type locality: Lappmark, Sweden. Cochliarium cuneiventris: Becker, 1894: 184 (new combination). Gimnomera cuneiventris: Šifner, 2003: 32 (new combination). Diagnosis. This Holarctic species is characterized by its single postsutural dorsocentral seta and also by the absence (rarely present) of the posterior postpronotal seta and the male terminalia with triangular-shaped cercus with expanded apical protrusion. Gimnomera cuneiventris has a variable body colour ranging from yellow to black, but always pale legs. Dark coloured G. cuneiventris specimens are similar to Nearctic species of G. tibialis and G. subvittata, but G. subvittata has a triangular-shaped cercus with apical and lateral protrusions and G. tibialis has a tapered apical projection on the cercus. Light coloured male G. cuneiventris specimens are also similar to Nearctic species of G. cerea, G. incisurata, G. terrywheeleri and G. vockerothi, but is distinguishable by the male cercus; triangular with lateral projection in G. cerea; triangular with no projections in G. incisurata and rectangular in G. terrywheeleri and G. vockerothi; and by its single dorsocentral seta. Redescription. Male. Body: Primary yellow or black (Note: specimens from Ontario and Québec yellow; specimens from Alaska, Hudson Bay, Finland and Norway black); pleura yellow or black; scutum yellow or black; entire body pale pruinose. Head with face yellow or black and gena yellow or black; genal width 1⁄2 eye height; postgena yellow or black. Frontal vitta yellow or black extending to ocellar triangle, black individuals with small yellow patch above lunule; fronto-orbital plate yellow or black; parafacial yellow or black. Fronto-orbital plate with 2 inclinate frontal setae; 1 proclinate, 2 lateroclinate orbital setae; 1 pair of lateroclinate ocellar setae, 1 pair of straight postocellar setae, 1 long inclinate inner vertical and 1 long lateroclinate outer vertical seta. Gena with 1 ...