Rhamphomyia Meigen 1822

• Main Authors: Sinclair, Bradley J., Vajda, Élodie A., Saigusa, Toyohei, Shamshev, Igor V., Wheeler, Terry A.
• Format: Text
• Language: unknown
• Published: Zenodo 2019
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Chironomidae; Rhamphomyia; Arctic; Canadian Arctic Archipelago; Greenland; Seta; Sinclair; Arctic Archipelago; Iceland
• Online Access: https://dx.doi.org/10.5281/zenodo.3796920; https://zenodo.org/record/3796920

Key to male Rhamphomyia of the Canadian Arctic Islands, Greenland and Iceland 1 Prosternum clothed entirely with white to brownish silky, hair-like setae (Fig. 3D); sternite 6 with cluster of strong golden setae; sternite 7 with pair of horn-like projections ventrally (Fig. 3C).................... R. ( Ctenempis ) albopilosa Coquillett - Prosternum bare; sternite 6 without row of golden setae; sternite 7 unmodified or modified different than above.......... 2 2 Cerci directed anteriorly (Figs 6A, 9C, 12B, 15B) (subgenus Dasyrhamphomyia )................................... 3 - Cerci directed posteriorly............................................................................... 6 3 Thorax short haired (setae shorter than gaps between rows) with acrostichals and dorsocentrals 1–2 serial, with brown vittae beneath rows; cerci with dark apex, with left cercus overlapping right at tip (Figs 12B, C); hind tibia with anteroventral row of dark, stout, spine-like setae shorter than half tibial width.................................. R. ( D .) leptidiformis Frey - Thorax long haired (setae longer than gaps between rows) with acrostichals and dorsocentrals 2–4 serial, without brown vittae beneath rows; cerci not darkened at apex, with right cercus overlapping left at tip (Figs 9D, 15C); hind tibia without anteroventral row of dark, stout, spine-like setae..................................................................... 4 4 Cerci pale, elongate, extending to tergite 3, overlapping subapically in addition to apical overlap (Figs 15B, C)........................................................................................... R. ( D. ) nigrita Zetterstedt - Cerci brownish to black, shorter, extending to tergite 5, only overlapping apically (Figs 6A, 9C)....................... 5 5 Dichoptic; abdomen with setae longer than length of abdominal tergites; cerci blackish (Fig. 6A); hind tibia and femur with pronounced fine, pale ventral pubescence (Fig. 6C).................................... R. ( D. ) erinacioides Malloch - Holoptic; abdomen with setae shorter than length of abdominal tergites; cerci pale brown (Fig. 9C); hind tibia and femur with long setae beneath (Fig. 9A)...................................................... R. ( D .) hovgaardii Holmgren 6 Wing without dm-m crossvein (cell dm open) (Fig. 62C); scutum with shiny vittae................................................................................................. R. ( Pararhamphomyia ) diversipennis Becker - Wing with dm-m crossvein (cell dm closed), sometimes dm-m crossvein or M 2 base absent in R. ( P .) omissinervis Becker; scutum without shiny vittae............................................................................. 7 7 Cercus with distinctive finger-like projection dorsally near base (Figs 53B, 60A)................................... 8 - Upper margins of cercus without finger-like projections....................................................... 9 8 Large species (wing length more than 5 mm); phallus curvature occurring before folding into epandrium; cercal finger-like projection stout (Fig. 53B); mid tibia with at least 3 preapical anteroventral and posteroventral setae dark, stout, spine-like..................................................................................... R. hirtula Zetterstedt - Small species (wing length less than 4 mm); phallus curvature hidden within epandrium; cercal finger-like projection slim, short, less than half cercal length (Fig. 60A); mid tibia with 2 anterodorsals and 2 posterodorsals longer than twice tibial width................................................................................ R. setosa Coquillett 9 Tergite 8 long, subequal to length of epandrium (Iceland only) (Fig. 46B).................... R. ( P. ) simplex Zetterstedt - Tergite 8 shorter than length of epandrium................................................................ 10 10 Subepandrial sclerite prolonged into pair of medioposterior lobes beneath cerci (Figs 31C, 28A, 25C, 34A, 36C, 38C, 40A).................................................................................................... 11 - Cercus without pair of subepandrial lobes beneath.......................................................... 17 11 Apex of subepandrial lobe forked....................................................................... 12 - Apex of subepandrial lobe unforked..................................................................... 14 12 Phallus stout, looping dorsally above cercus and epandrium; apex of phallus expanded with ridge of teeth-like projections (Figs 28A, B).............................................................................. R . ( P. ) helleni Frey - Phallus slender, filamentous apically, extending slightly beyond epandrium; tip of phallus slender, tapered, lacking teeth-like projections......................................................................................... 13 13 Fore tarsomere 1 swollen, slightly broader than width of fore tibia at apex (Fig. 31A); tergite 5 without stout posterolateral setae; subepandrial lobe with outer finger-like process lacking apical seta, longer than inner lobe (Figs 31 C-E)............................................................................................ R. ( P. ) hilariformis Frey - Fore tarsomere 1 slender, narrower than width of fore tibia at apex; tergite 5 with several closely set stout posterolateral setae (Fig. 38B); subepandrial lobe with slender, outer finger-like process bearing 1 very long, fine, black seta (Figs 38C, D).................................................... R. ( P. ) lymaniana Sinclair, Vajda, Saigusa & Shamshev sp. nov. 14 Phallus not forming loops.............................................................................. 15 - Phallus forming loops................................................................................. 16 15 Hind tibia with some anterodorsal, posterodorsal and dorsal setae more than 2X tibial width (Fig. 25B); apex of subepandrial lobe rounded (Figs 25A, C)............................ R. ( P. ) frigida Sinclair, Vajda, Saigusa & Shamshev sp. nov. - Hind tibia with anterodorsal, posterodorsal and dorsal setae shorter than 2X tibial width (Fig. 34B); apex of subepandrial lobe pointed (Fig. 34A)....................................................................... R. ( P. ) hoeli Frey 16 Hind tibia clavate (Fig. 36D); hind tarsomere 1 shorter than length of tarsomeres 2–4 combined (Fig. 36D)............................................................................................ R. ( P .) kjellmanii Holmgren - Hind tibia not clavate (Fig. 40B); hind tarsomere 1 longer than length of tarsomeres 2–4 combined (Fig. 40B)........................................................................................... R. ( P .) omissinervis Becker 17 Phallus hidden within epandrium, leaving only base visible (Fig. 17B)................................................................................. R . ( Eorhamphomyia ) shewelli Sinclair, Vajda, Saigusa & Shamshev sp. nov. - Phallus slim to hair-like, usually extending farther than length of epandrium, and often with curvatures................ 18 18 Phallus with distinct loop on apical half around apex of epandrium (Figs 51C, 57A)............................... 19 - Phallus without loop, gradually curved................................................................... 20 19 Sternite 8 with stout, “horn-like” lateral projections (Fig. 51D); phallus with loop forming acute angle (Fig. 51C); hind tarsomere 1 swollen, wider than hind tibial width at apex (Fig. 51B)................................ R. herschelli Malloch - Sternite 8 without projections; phallus with small in-ward U-shaped loop (Fig. 57A); hind tarsomere 1 slender (Fig. 56B)........................................................................................ R. laevigata Loew 20 Midleg distinctly modified: femur strongly curved upwards; tibia curved inwards, with 3–5 dark, stout mid-posterodorsal setae longer than 2X tibial width; tarsomere 1 spindle-shaped, covered with dense, erect and moderately long setae (Figs 42A, B)................................................ R. ( P. ) petervajdai Sinclair, Vajda, Saigusa & Shamshev sp. nov. - Midleg simple....................................................................................... 21 21 Apex of epandrium truncate (Figs 44A, C); hind tibia with distinctive inward bend on apical part; hind tarsomere 1 spindleshaped, convex dorsally but straight ventrally (Fig. 44B)................................................................................................... R. ( P. ) septentrionalis Sinclair, Vajda, Saigusa & Shamshev sp. nov. - Apex of epandrium rounded; hind tibia straight; hind tarsomere 1 clavate or uniformly slender....................... 22 22 Anepisternum shiny and scutum with 1–2 pairs of shiny vittae; hind tarsomere 1 clavate, increasing in size apically such that apical width broader than hind tibia (Fig. 48B); cerci weakly constricted in middle, posterior half parallel to epandrium (Fig. 48A).......................................................................... R. ( P. ) ursinella Melander - Anepisternum pruinose and scutum with pruinescent vittae; hind tarsomere 1 evenly slender, nearly as broad as apical width of hind tibia, (Fig. 25B); cerci strongly constricted in middle, posterior half strongly divergent from epandrium (Fig. 25A)....................................................................... R. ( P. ) filicauda Henriksen & Lundbeck : Published as part of Sinclair, Bradley J., Vajda, Élodie A., Saigusa, Toyohei, Shamshev, Igor V. & Wheeler, Terry A., 2019, Rhamphomyia Meigen of the Canadian Arctic Archipelago, Greenland and Iceland (Diptera: Empididae), pp. 1-94 in Zootaxa 4670 (1) on pages 6-7, DOI: 10.11646/zootaxa.4670.1.1, http://zenodo.org/record/3773507