Gimnomera tibialis

• Main Authors: Chagnon, Marie-Eve, Sinclair, Bradley J.
• Format: Text
• Language: unknown
• Published: Zenodo 2020
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Scathophagidae; Gimnomera; Gimnomera tibialis; Arctic; Newfoundland; Nunavut; Yukon; Northwest Territories; Eskimo Point; Canada; Indian; British Columbia; Devon Island; Coleman; Tuktoyaktuk; Spence; Payne; Seta; Leech; Bryant; Sinclair; Wrangel Island; Cambridge Bay; Foote; Atlin; Waterhouse; North Fork; Torngat Mountains; Alar; Firth River; Tasiujaq; Spence Bay; Teardrop; North Fork Pass; Payne Bay; Masik River; Kidluit Bay; Hinde Lake; Cartwright; Churchill; eskimo*; Herschel; Malloch; Richards Island; Tundra; Alaska
• Online Access: https://dx.doi.org/10.5281/zenodo.4410887; https://zenodo.org/record/4410887

Gimnomera tibialis (Malloch) (Figs 13, 14, 19, 24, 28, 37) Dasypleuron tibialis Malloch, 1919: 79. Type locality: Collinson Point, Alaska, USA. Gimnomera tibialis : Vockeroth, 1965: 840 (new combination). Cochliarium sibiricum Engelmark, 1999: 164. Type locality: Wrangel Island, Russia (Ozerov 2019, new synonym). Gimnomera sibirica : Šifner, 2008: 134 (new combination). Diagnosis. This Holarctic species is characterized by its variable number of pre- and postsutural dorsocentral setae ranging from 2–4 and by the male terminalia with its tapered apical projection on the cercus, hatchet-shaped surstylus and teardrop-shaped pregonite with two setae. Other populations have rows of pale dorsocentral and acrostichal setulae and only a single postsutural dorsocentral seta. Gimnomera tibialis is similar in appearance to the Nearctic species G. aquilonia , G. cuneiventris and G. subvittata because of similarities in body colour, but can be distinguished by the greater number of dorsocentrals with one in G. cuneiventris and two in G. subvittata . Gimnomera tibialis can also be distinguished by the shape of the male cercus, which is cup-shaped in G. aquilonia triangularshaped with apical protrusions in G. cuneiventris and triangular-shaped with apical and lateral protrusions in G. subvittata . Redescription. Male. Body: Primarily brown to black; pleura brown toblack; scutum black; entire body dusted with white pruinosity. Head with face black and gena black, often with yellowish oval central patch in genal groove; genal width slightly less than 1⁄4 eye height; postgena black. Frontal vitta yellow-orange darken to black towards ocellar triangle; fronto-orbital plate black blending to yellow anteriorly; parafacial black to yellowish brown. Frontoorbital plate with 4 inclinate frontal setae and 1 proclinate, 2 lateroclinate orbital setae, 1 pair of strong lateroclinate ocellar setae, 1 pair of divergent postocellar setae; 1 long inclinate inner vertical seta, 1 long lateroclinate outer vertical seta. Gena with 1–2 supravibrissal setae not equal in size to vibrissa; 1 strong vibrissa; 4–9 variably lengthened subvibrissal setae, 1–2 subequal to vibrissa. Antenna with postpedicel black, about twice as long as pedicel; scape and pedicel black or pale, pedicel with 1 stout seta along ptilinal fissure; arista black and pubescent. Palpus yellow with long thin black setae and pale pruinescence. Thorax with scutal setae black; acrostichal setae biserial, finer and paler than dorsocentrals; 2–4 presutural and 3–4 postsutural dorsocentral setae or rows of setulae and 1 prescutellar dorsocentral seta; usually 2 (sometimes 1) posterior postpronotal setae and two rows of 20+ short, stout, erect postpronotal setae on anterior margin of postpronotum and scutum, anterior setae variable in thickness; 1 fine presutural intra-alar setae, 2 notopleural setae, 1 postsutural fine intra-alar seta, 2 postsutural supra-alar setae, 2 postalar setae. Pleura with 2 proepisternal setae; 1 proepimeral seta; 2–3 posterior anepisternal setae and numerous anepisternal setulae; 1 posterodorsal katepisternal seta; posterior 2⁄3 of anepisternum, katepisternum and anepimeron with long, pale setulae. Wing (length 3.3–4.0 mm) clear, infuscate; R 1 with setulae on apical 1⁄4 above (Fig. 28); CuA+CuP ending just short of wing margin. Halter white or light brown. Legs variable in colour, entirely yellow, entirely black, or entirely brown; femur and tibia brown/black, tarsi yellow; femur and tibia brown/black, tarsi brown; femur brown/ black, part of tibia black and yellow, tarsi black/brown. All coxae black. Fore femur with long, white ventral pile; 1 preapical anterodorsal seta; 3 posterodorsal setae on apical 1⁄3. Fore tibia with 1 preapical dorsal seta; 1 preapical posterior seta; 1 mid-length posterior seta and 1 preapical ventral seta. Mid femur with long, white ventral pile; 3 anterodorsal apical setae; 1 anterior seta on apical 1⁄3; 1 dorsal seta on apical 1⁄3; 1 posterior seta on apical 1⁄3. Mid tibia with 1 preapical dorsal seta; 1 mid-length anterodorsal seta; 1 preapical anterior seta; 1 preapical ventral seta and 1 mid ventral seta. Hind femur with long, white pile; 2 dorsal setae on apical 1⁄3; 1 anterodorsal seta on apical 1⁄3. Hind tibia with 1 preapical dorsal seta; 2 anterodorsal setae on basal 1⁄2; 1 preapical ventral seta. Tarsi with short, white ventral pile; at basal end of each segment short black setae present. Abdominal tergites black/brown, clothed with thin black setulae. Abdominal sternites black/brown. Sternite 5 with 2 large, divergent rectangular processes. Apical margin of processes with short stiff black setae. Terminalia (Figs 13, 14) with epandrium black; surstylus dark yellow to brown; cercus brown to black; hypandrium black. Surstylus longer than cercus, never fully meeting beneath cercus; trough-shaped with indent facing cercus; posterior fold surpassing anterior fold; apical end in posterior view triangular in shape; in lateral view very broad and apical end triangular in shape; setae along inner fold. Cercus elongate heart-shape fused apically; laterally smooth with no protrusions and folded inward slightly. Pregonite slender, undivided, apical end with 4 variably lengthened black setae and pointed posteriorly. Postgonite subequal to pregonite; positioned dorsally to pregonite; apical end curved ventrally and pointed. Female. Similar to male (Fig. 18), except gena with 1 strong vibrissa; 4–6 variably lengthened subvibrissal setae. Terminalia as described in generic diagnosis; membrane between tergites and sternites 7 and 8 with large dark spines (Fig. 24). Type material examined. Gimnomera sibiricum (not examined). Gimnomera tibialis : HOLOTYPE ♂, labelled: “ Type / Dasypleuron / tibialis Mall. / No. 1189 [red label]”; “Collinson Pt [69°59′01.01′′N 114°54′30.35′′W]/ June 20/ Alaska ”; “ Canadian / Arctic / Expedition / F.J. 1914”; “1167 [dissected]” (CNC). Additional material examined. CANADA. Alberta: Banff NP [51°29′39.8′′N 115°56′00.8′′W], 17.vii.1955, R. Coyles (3♀, 3♂, CNC); Banff NP [51°29′39.8′′N 115°56′00.8′′W], 17.vii.1955, J. R. McGillis (1♀, CNC); Highwood Summit, Kananasksis-Coleman [50°35′58.6′′N 114°59′14.2′′W], 14.viii.1955, J. R. McGillis (1♀, CNC); Ptarmigan Lake [51°29′46.2′′N 116°04′38.2′′W], 26.vii.1962, W. R. M. Mason (1♀, CNC); Snow Ck Pass, Banff NP [51°29′39.8′′N 115°56′00.8′′W], 8.vii.1962, K.C. Hermann (3♀, 8♂, CNC); Snow Ck Pass, Banff NP [51°29′39.8′′N 115°56′00.8′′W], 8.vii.1962, W. R. M. Mason (2♀, 1♂, CNC); same data except, 20.vii.1962 (1♀, 4♂, CNC); same data except, 24.vii.1962 (4♂, CNC); Snow Ck Pass, Banff NP [51°29′39.8′′N 115°56′00.8′′W], 20.vii.1962, K.C. Hermann (1♀, 1♂, CNC); same data except, 24.vii.1962 (1♀, CNC); same data except, 28.vii.1962 (4♀, 8♂, CNC); same data except, 13.viii.1962 (1♂, CNC); Sunwapta Pass, Banff-Jasper [52°12′52.2′′N 117°09′33.8′′W], 9.vii.1995, R. Coyles (1♂, CNC); Sunwapta Pass [52°12′52.2′′N 117°09′33.8′′W], 1.viii.1962, K.C. Herman (2♂, CNC). British Columbia: Apex Mt, Penticton [52°12′55.3′′N 117°49′30.6′′W], 26.vii.1967, J. R. Vockeroth (1♀, 2♂, CNC); Atlin [59°34′40.7′′N 133°41′23.4′′W], 8.vii.1955, B.A. Gibbard (1♀, CNC); Summit Lake [54°16′52.2′′N 122°38′31.6′′W], 1.vii.1959, R. E. Leech (1♀, 2♂, CNC); same data except, 6.vii.1959 (1♂, CNC); same data except, 16.vii.1959 (1♀, CNC); same data except, 2–4.vii.1959, E.E. MacDougall (1♀, CNC); same data except, 15.vii.1959 (1♀, CNC); Tunjony, 58°26ʹN 132°45ʹW, 18, 22.vii.1960, W.W. Moss (1♀, CNC). Manitoba: Churchill [58°46′04.3′′N 94°10′30.1′′W], 25.vi.1930, O. Bryant (1♂, USNM); Churchill [58°46′04.3′′N 94°10′30.1′′W], 18– 29.vi.1948, G.E. Shewell (2♀, 10♂, CNC); Churchill [58°46′04.3′′N 94°10′30.1′′W], 10–20.vi.1952, J.G. Chillcott (2♀, 6♂, CNC); same data except, 4.viii.1952 (1♂, CNC); Churchill [58°46′04.3′′N 94°10′30.1′′W], 12.vi.1952, C.D. Bird (1♂, CNC); same data except, 17.vi.1952 (1♂, CNC); Wapusk NP, 58°43′23.16′′N 93°27′34.92′′W, 13– 20.vii.2014, D. Iles (2♂, CBG). Newfoundland and Labrador: Cartwright [53°42′23.6″N 57°01′25.3′′W], 26.vi.1955, E.F. Cashman (1♀, CNC); same data except, 20.vii.1955 (1♂, CNC); Torngat Mountains NP, 58°27′2.52′′N 62°47′53.16′′W, 5 m, 5–9.viii.2013, D. Whitaker (1♀, CBG); same data except, 13–20.vii.2014 (4♀, 6♂, CBG); same data except, 28.vii.–8.vii.2014 (2♀, CBG). Northwest Territories: Aulavik NP, 73°13′41.52′′N 119°33′4.32″W, 34 m, 2–7.vii.2014, Parks Canada (1♀, 2♂, CBG); Aulavik NP, 73°13′41.52″N 119°33′4.32″W, 39 m, 2–7.vii.2014, Parks Canada (1♀, CBG); Banks Is., Aulavik NP, 73°13′18.516′′N 119°33′38.124″W, Repl. 1 mesic, Malaise, 7–11.vii.2011, NBP field party (2♀, LEM); same data except, 73°13′26.832″N 119°33′9.18′′W, Repl. 1 wet, pan traps (10♂, LEM); same data except, Repl. 1 wet, Malaise (5♀, 8♂, LEM); same data except, 73°13′35.616′′N 119°34′38.208″W, Repl. 2 mesic, pan traps (1♀, 16♂, LEM); same data except, 73°13′42.78″N 119°35′11.832″W, Repl. 3 mesic, pan traps (1♂, LEM); same data except, 73°13′54.948″N 119°34′59.88′′W, Repl. 3 wet, pan traps (3♀, 70♂, LEM); same data except (5♂, barcoded, LEM); same data except, 73°13′58.224″N 119°32′49.884″W, Repl. 2 wet, pan traps (3♀, 16♂, LEM); same data except, 73°13′35.616″N 119°34′38.208″W, Repl. 2 mesic, sweep, 10.vii.2011 (2♀, 1♂, LEM); same data except, 73°13′58.224′′N 119°32′49.884′′W, Repl. 2 wet, sweep, 13.vii.2011 (2♂, LEM); same data except, 73°13′26.832″N 119°33′9.18″W, Repl. 1 wet, pan traps, 11–15.vii.2011 (4♀, 8♂, LEM); same data except, 73°13′35.616″N 119°34′38.208″W, Repl. 2 mesic, pan traps (4♀, 7♂, LEM); same data except, 73°13′58.224″N 119°32′49.884′′W, Repl. 2 wet, pan traps (7♀, 23♂, LEM); same data except, Repl. 2 wet, Malaise (2♀, LEM); same data except, 73°13′54.948″N 119°34′59.88′′W, Repl. 3 wet pan traps (12♀, 46♂, LEM); same data except, 73°13′54.948″N 119°34′59.88′′W, Repl. 2 or 3 wet, pan traps (2♂, barcoded, LEM); same data except, 73°13′35.616′′N 119°34′38.208′′W, Repl. 2 mesic, pan traps, (1♂, LEM); same data except, 73°13′26.832′′N 119°33′9.18′′W, Repl. 1 wet, pan traps, 15–19.vii.2011, NBP filed party (3♀, 3♂, LEM); same data except, 73°13′35.616″N 119°34′38.208″W, Repl. 2 mesic, pan traps (1♀, 1♂, LEM); same data except, 73°13′42.78′′N 119°35′11.832″W, Repl. 3 mesic, pan traps (1♀, LEM); same data except, 73°13′54.948″N 119°34′59.88″W, Repl. 3 wet, Malaise (8♀, 8♂, LEM); same data except, Repl. 3 wet, pan traps (1♂, LEM); same data except, 73°13′42.78″N 119°35′11.832″W, Repl. 3 mesic, Malaise (4♀, LEM); same data except, 73°13′58.224″N 119°32′49.884″W, Repl. 2 wet, pan traps (7♂, LEM); same data except, 73°13′42.78″N 119°35′11.832″W, 19.vii.2011 (1♀, LEM); Hinde Lake, 61°12ʹN 103°40ʹW, 8–9.vii.1966, J.G. Chillcott (1♀, CNC); Kidluit Bay, Richards Island, [69°30′53.9′′N 133°48′56.1′′W], 25–28.vii.1948, J. R. Vockeroth (1♀, 1♂, CNC); Masik River, Banks Is. [71°35′24.8″N 123°24′58.7″W], 4–18.vii.1968, W. R. M. Mason (2♀, 6♂, CNC); same data except, 31.vii.1968, G.E. Shewell (1♀, CNC); Tuktoyaktuk [69°26′40.2′′N 133°02′19.6″W], 17–25.vi.1971, D.M. Wood (2♀, CNC); same data except, 2–5.vii.1971 (1♀, CNC); Tuktoyaktuk [69°26′40.2″N 133°02′19.6″W], 15.vii.1971, W. R. M. Mason (2♂, CNC); Victoria Is., 71°17′N 114°W, 1–10.vii.1975, G. & M. Wood (5♀, 4♂, CNC); same data except, 23–30.vii.1975 (8♀, 28♂, CNC). Nunavut: Cambridge Bay [69°07′05.0″N 105°03′26.1′′W], 22.vi.1950, G.K. Sweatman (1♂, CNC); Cambridge Bay [69°07′05.0′′N 105°03′26.1′′W], 11.vii.1950, E.H.N. Smith (2♀, CNC); same data except, 15.vii.1950 (1♂, CNC); Cambridge Bay, 69°7′11.748″N 105°25′14.34′′W, Repl. 1 mesic, pan traps, 7–11.vii.2011, NBP field party (1♂, LEM); same data except, Repl. 1 mesic, Malaise (3♀, 6♂, LEM); same data except, 69°7′25.176′′N 105°25′31.116″W, Repl. 3 wet, pan traps (1♀, LEM); same data except, 69°7′14.52′′N 105°25′32.952″W, Repl. 2 mesic, Malaise, 11–15.vii.2011 (4♂, LEM); same data except, 69°7′20.1′′N 105°25′18.876″W, Repl. 2 wet, Malaise (3♀, 1♂, LEM); same data except, Repl. 2 wet, pan traps (3♂, LEM); same data except, 69°7′25.176″N 105°25′31.116″W, Repl. 3 wet, pan traps (1♂, LEM); same data except, 69°7′20.1′′N 105°25′18.876″W, Repl. 2 wet, sweep, 13.vii.2011 (1♂, LEM); same data except, 69°7′25.176′′N 105°25′31.116″W, Repl. 3 wet, sweep, 15.vii.2011 (1♂, LEM); same data except, 69°7′25.176″N 105°25′31.116″W, Repl. 3 wet, Malaise, 15–19.vii.2011 (1♀, 3♀, LEM); same data except, 15–18.vii.2011 (1♂, LEM); same data except, 69°7′17.652″N 105°25′52.464′′W, Repl. 3 mesic, Malaise, 15–19.vii.2011 (1♂, LEM); same data except, 69°7′25.176′′N 105°25′31.116′′W, Repl. 3 wet, pan traps (1♂, LEM); same data except, 69°7′18.372′′N 105°25′0.768′′W, Repl. 1 wet, pan traps (1♂, LEM); Conrod, 64°52ʹN 104°15ʹW, 8.vii.1966, G.E. Shewell (1♂, CNC); Devon Island, 75°N 85°W, 7.vii.1970, J.K. Ryan (1♂, CNC); Eskimo Point [61°05′58.2′′N 94°07′58.4′′W], 13.vii.1950, G.G. Dilabio (1♂, CNC); Eskimo Point [61°05′58.2′′N 94°07′58.4′′W], 13.vii.1950, G. R. Roberts (1♂, CNC); Lady Melville, 69°25ʹN 93°15ʹW, 3.vii.1951, J.G. Chillcott (1♂, CNC); McConnell, 60°50ʹN 94°25ʹW, 29.vii.1970, K.L. MacInnes (1♂, CNC); Spence Bay [69°32′12.6′′N 93°31′43.1′′W], 10–14.vii.1951, A.E. R. Downe (1♀, 1♂, CNC); Spence Bay [69°32′12.6′′N 93°31′43.1′′W], 28.vi., 1–27.vii.1951, J.G. Chillcott (1♀, 11♂, CNC). Québec: Fort Chimo [58°06′10.8′′N 68°25′08.6′′W], 5.vii.1958, W. R. M. Mason (1♀, CNC); Indian House [56°15′00.4′′N 64°41′56.1′′W], 29.vii.1954, W. R. Richards (1♂, CNC); Payne Bay [60°01′43.7′′N 69°50′33.4′′W], 18.vii.1954, R. McCondochie (1♀, CNC); Payne Bay [60°01′43.7′′N 69°50′33.4′′W], 20–31.vi.1958, 7–29.vii., 3.viii.1958, E.E. MacDougall (10♀, 12♂, CNC); Payne Bay [60°01′43.7′′N 69°50′33.4′′W], 6–22.vii.1958, W. R. M. Mason (2♀, 5♂, CNC); Tasiujaq [58°42′N 69°56′W], 23–25.viii.1996, ex. tundra, B.J. Sinclair (1♀, CNC). Yukon: British Mts, 69°15ʹN 140°02ʹW, 25.vi.1984, G. & M. Wood & D. Lafontaine (1♀, 3♂, CNC); Dempster Hwy km 456 [66°56′16.9′′N 136°15′55.1′′W], 1–4.vii.1973, G. &D.M.Wood (1♀, CNC); Dempster Hwy km456 [66°56′16.9′′N 136°15′55.1′′W], 17–18.vii.1981, Lafontaine & G. & M. Wood (1♀, CNC); Dempster Hwy km 456 [66°56′16.9′′N 136°15′55.1′′W], 7–9.vii.1985, S.A. Marshall (3♂, DEBU); Dempster Hwy near North Fork Pass, 64°36′22.644′′N 138°21′22.932′′W, Repl. 1 wet, Malaise, 21–24.vii.2011, NBP field party (1♀, LEM); same data except, 64°34′45.912′′N 138°16′55.632′′W, Repl. 3 wet, Malaise, 27.vi.–1.vii.2011 (1♀, LEM); Firth River [68°50′10.9′′N 140°36′00.9′′W], 13–14.vii.1956, R. E. Leech (7♂, CNC); Firth River [68°50′10.9′′N 140°36′00.9′′W], 11–30.vii., 2.viii.1956, E.F. Cashman (7♀, 3♂, CNC); Herschel Is [69°34′N 138°52′W], 8–29.vii.1953, C.D. Bird (6♀, 6♂, CNC); Herschel Is [69°34′N 138°52′W], 5–26.vii.1953, J.S. Waterhouse (2♀, 25♂, CNC); Herschel Is [69°34′N 138°52′W], 28–29.vi., 24–28.vii.1971, D.M. Wood (15♀, 19♂, CNC); Herschel Is [69°34′N 138°52′W], 29–30.vi., 1–28.vii.1971, W. R. M. Mason (8♀, 26♂, CNC); Herschel Is, 69°34′N 138°52′W, 20&ndas : Published as part of Chagnon, Marie-Eve & Sinclair, Bradley J., 2020, Revision of the Nearctic species of Gimnomera Rondani (Diptera: Scathophagidae) with morphological phylogeny and DNA barcodes, pp. 369-403 in Zootaxa 4853 (3) on pages 385-391, DOI: 10.11646/zootaxa.4853.3.3, http://zenodo.org/record/4410845 : {"references": ["Malloch, J. R. (1919) The Diptera collected by the Canadian Expedition, 1913 - 1918. (excluding the Tipulidae and Culicidae). In: Anderson, R. M. (Ed.), Report of the Canadian Arctic Expedition 1913 - 18. Vol. 3. Insects. Part C. Diptera. King's Printer, Ottawa, Ontario, pp. 34 - 90.", "Vockeroth, J. R. (1965) Subfamily Scatophaginae. In: Stone, A., Sabrosky, C. W., Wirth, W. W., Foote, R. H. & Coulson, J. R. (Eds.), A Catalog of the Diptera of America north of Mexico. United States Department of Agriculture Agriculture Handbook No. 276. U. S. Government Publishing Office, Washington, pp. 826 - 842.", "Engelmark, R. (1999) Dungflies (Diptera: Scathophagidae) collected by the Swedish-Russian tundra ecology expedition ' 94, with the description of two new species; Nanna indotatum and Cochliarium sibiricum. Entomologisk Tidskrift, 120, 157 - 167.", "Ozerov, A. L. (2019) A review of the genus Gimnomera Rondani, 1866 (Diptera: Scathophagidae) of Russia. Russian Entomological Journal, 28 (2), 195 - 218. https: // doi. org / 10.15298 / rusentj. 28.2.15"]}