Neotherevella kozlovi (Zaitzev)

Winterton, Shaun L., Irwin, Michael E. & Mortelmans, Jonas, 2023, Revision of the dune-associated stiletto flies of the genus Neotherevella Lyneborg, 1978 (Therevidae, Therevinae), African Invertebrates 64 (2), pp. 109-138 : 109

Neotherevella kozlovi (Zaitzev)

Figs 4 , 11A, B , 12C, D , 13C, D , 14A , 15

Aristothereva kozlovi Zaitzev, 1971a: 66- Zaitzev (1971b: 39 [key]); Gorodkov et al. (1974: 226 [faunal record]).

Neotherevella kozlovi Zaitzev (1971a) - Lyneborg (1978: 76 [new combination]; 1989: 22 [catalogue]).

Holotype.

Peoples Republic Of China • male; Inner Mongolia, Etsin Gol, North Alashan, Gobi; [41.8056, 100.9883]; 23 Jun 1926; P. Kozlov leg.; ZISP; N2236.

Paratypes.

Peoples Republic Of China • 3 males, 6 females; Inner Mongolia, same data as holotype; [41.8056, 100.9883]; 14-15 Mar 1908, 23 Jun 1926; P. Kozlov leg.; ZISP, CSCA. Uzbekistan • 1 female; Xorazm Region, Khiva; [41.3847, 60.3655]; 20 Apr 1927; L. Zimin leg.; ZISP.

Diagnosis.

Male frons lacking dark maculae, wider than ocellar tubercle at narrowest point; female frontal maculae without erect macrosetae; scape macrosetae white to yellow; palpus narrow; wing cell m3 open; all macrosetae yellow-white; dorsocentral macrosetae absent.

Redescription.

Body length: 8.0 mm (male), 10.5 mm (female). Head. Frons profile flat to slightly rounded (female), male frons width at narrowest point slightly wider than ocellar tubercle, female frons wide, inner eye margins subparallel; pubescence greyish-silver, paired matte-black pubescent maculae present (female), male frons with setae absent, female frons with patch of pale setae beside and slightly below antennal base; postocular setae white, arranged in single row, occiput relatively convex, pubescence grey admixed with white, scale-like setae, abundant medially; genal setae pale; palpus narrow, with white setae; antennal scape bulbous, equal length to flagellum, brown, overlain with grey pubescence (male) or dark yellow-orange, overlain with grey pubescence (female), numerous large white-yellow setae; flagellum brown. Thorax. Scutum grey pubescent, erect, filiform setae admixed with adpressed, white, scale-like setae, denser anteriorly; thoracic macrosetae yellow; scutellum concolourous with scutum; pleuron with dense silver-grey pubescence admixed with extensive semi-erect, white, scale-like setae; coxae yellow, overlain with silver-grey pubescence, macrosetae few in number, setae white; femora uniform yellow (female) or dark grey-brown with apices yellow (male), dense covering of white, scale-like adpressed setae, macrosetae white, hind femur with 3-4 anteroventral macrosetae in distal half; tibiae and tarsi dark yellow, macrosetae elongate, white; wing opaque white, brown along veins; cell m3 open; venation yellow basally along major veins, darker distally; haltere dark yellow; scutal chaetotaxy: notopleural, 5; supra alar, 1; post alar, 2; dorsocentral, 0; scutellar, 2. Abdomen. Male base colour grey pubescent with extensive long, pale filiform setae admixed with adpressed setae; terminalia dark yellow; female abdomen brown, tergites yellow posteriorly and laterally; acanthophorite spines yellow. Male genitalia. Epandrium ovoid, brown anteromedially, covered with pale setae, corners pointed posterolaterally; sternite 8 narrowed posteriorly, emarginate apically with elongate setae in posterior half; gonocoxites with dense white setae, outer gonocoxal process reduced to small ridge, inner gonocoxal process narrowed apically, gonostylus truncated apically, angular ridge on outer surface, ventral lobe relatively large, rounded; gonocoxal apodeme small; phallus with broad dorsal apodeme of parameral sheath, ventral apodeme triangular, distiphallus broad and curved ventrally.

Distribution.

China (Inner Mongolia), Uzbekistan.

Ecology.

Neotherevella kozlovi adults are found in sand dunes habitats.

Conservation status.

Not threatened; apparently widely distributed in relatively undisturbed areas.

Comments.

Neotherevella kozlovi was originally described in Aristothereva by Zaitzev (1971a) and later transferred to Neotherevella by Lyneborg (1978). The presence of distinctive frontal maculae of the female frons supports this combination. This species is distinct from other Neotherevella species by the shape of the frons in both sexes and yellow scape macrosetae.

Figures

Figure 4. Neotherevella kozlovi (Zaitzev, 1971) A female, lateral view B male, oblique view.

Figure 11. Neotherevella species, head, frontal view A Neotherevella kozlovi (Zaitzev, 1971 a), male B same, female C Neotherevella arenaria (Lyneborg, 1976), male D same, female E Neotherevella londti sp. nov., male F same, female G Neotherevella macularis (Wiedemann, 1828), male H same, female I Neotherevella maroccanus sp. nov., male.

Figure 12. Neotherevella species, male epandrium and sternite 8 A, B Neotherevella arenaria (Lyneborg, 1976) C, D Neotherevella kozlovi (Zaitzev, 1971 a) E, F Neotherevella londti sp. nov. G, H Neotherevella macularis (Wiedemann, 1828). Scale bar: 0.25 mm.

Figure 13. Neotherevella species, male gonocoxites (ventral view left, dorsal view right) with phallus in situ A, B Neotherevella arenaria (Lyneborg, 1976) C, D Neotherevella kozlovi (Zaitzev, 1971) E, F Neotherevella londti sp. nov. G, H Neotherevella macularis (Wiedemann, 1828). Scale bar: 0.25 mm.

Figure 14. Neotherevella species, male phallus A Neotherevella kozlovi (Zaitzev, 1971), lateral view B Neotherevella arenaria (Lyneborg, 1976), lateral view C Neotherevella londti sp. nov., lateral view D Neotherevella macularis (Wiedemann, 1828), lateral view E Neotherevella londti sp. nov., ventral view F Neotherevella macularis (Wiedemann, 1828), dorsal view. Scale bar: 0.25 mm.

Figure 15. Neotherevella distribution.