Thrypticus viridis Parent, 1932, 2020

Negrobov, Oleg P. & Naglis, Stefan, 2020, Two new species of Thrypticus Gerstäcker from Turkey (Diptera, Dolichopodidae) with checklist and key to Palaearctic species, Zootaxa 4858 (1), pp. 111-125 : 116

Redescription of Thrypticus viridis Parent, 1932

( Fig. 5 )

Type material. HOLOTYPE ♂, labelled: “ Thrypticus viridis Par. n. sp. O. Parent Type [white label, handwritten]”; “Berlin Grünewald, 20.6.12 [handwritten] [white label]”; “coll. Oldenberg [white label]”; “Typus [red label]”; “Holotypus [red label]”; “ DEI Müncheberg Dip – 00819 [green label]”; “Gen. Prep. No. SN2020-13 det. S. Naglis 2020 [white label]” ( SDEI). Genitalia originally dissected and imbedded in Canada Balsam; now placed in plastic tube filled with glycerin jelly.

Diagnosis. Antennal scape yellow, pedicel partly yellow, postpedicel black, thorax and abdomen shiny metallic green, with yellow setae; legs entirely yellow; mid tibia with strong ad seta; scutellum with 2 strong marginal setae and 2 smaller lateral setae; surstylus and cercus yellow.

Redescription. Male. Body length: genitalia dissected, wing length 2.3 mm. Head: frons shiny metallic green, with blue reflections, face shiny blue, with violet reflections, both with weak grey pruinosity; palpus dark brown, with strong yellow apical seta; proboscis brown; antenna with scape yellow, pedicel yellow with brown apical margin, postpedicel black, roundish, as long as high; arista apical, with microscopic pubescence; all postocular setae yellowish white. Thorax: mesonotum metallic green, with grey pruinosity; thoracic setae dark yellow; 5 pairs of strong dc (increasing in length towards scutellum); 7–9 pairs of short ac; scutellum with 2 strong marginal setae, with 2 smaller lateral setae; 2 strong yellow ppl; pleura concolorous (incl. pruinosity) with mesonotum. Legs: coxae yellow, basal half brownish, remaining legs yellow, except tarsomere 5 brown, setae and hairs yellow except as noted. Fore leg: coxa anteriorly with small hairs and strong apical setae; remaining leg without major setae; relative podomere ratios: 37/30/13:7:5:3:4. Mid leg: coxa with some small setae; femur without major setae; tibia with 1 strong, brown ad seta at basal 1/4; relative podomere ratios (tarsomeres 2-5 missing): 37/38/18. Hind leg: coxa with 2 strong lateral setae; remaining part of leg missing. Wing: hyaline, veins brown; basal section of M shorter than distal section; R 4+5 and M parallel; M joining costa at apex; CuAx ratio: 0.35; RMx ratio: 2.7; lower calypter yellowish white, with pale yellow setae; halter stem brown infuscated, knob yellow. Abdomen: shiny metallic green, with pale yellow hairs and setae. Hypopygium ( Fig. 5 ): hypandrium with flattened, leaf-shaped apex; epandrial lobes fused, each with long seta of same length; cercus as long as surstylus, with obtuse apex; surstylus yellow, curved, pyriform, with 1 strong, yellow, inwardly curved ventral seta and 2 smaller apical setae.

Figures

FIGURE 5. Thrypticus viridis Parent holotype, hypopygium apical part, left lateral. (Scale bar = 0.1 mm).