Pyrgotomyia ciliata Hendel, 1934

Korneyev, V. A., 2012, Revision of the genus Pyrgotomyia Hendel (Diptera: Pyrgotidae), African Invertebrates 53 (1), pp. 187-187 : 193-194

Pyrgotomyia ciliata Hendel, 1934

Figs 1 , 10

Pyrgotomyia ciliata: Hendel 1934: 154 ; Vanschuytbroeck 1963: 23; Steyskal 1980: 560.

Description:

Male.

Head: Length: height: width = 1.0:1.0:1.1; pale orange-yellow, except occiput sides somewhat darker reddish yellow and flagellomere 1 brown in apical half. Frons shining yellow, without brown areas, 1.3× as long as wide in its narrowest part; with 1 proclinate orbital seta and 6 irregular setulae as long as orbital seta, on its anterior portion. Parafacial and subocular sclerite entirely shining yellow, without brown areas. Face deeply concave, twice as high as wide, shining; supraclypeal sclerite poorly separated from face, 0.85× as high as wide (in its dorsalmost part). Eye 1.4× as high as long and 2.7× as high as gena. Ocellar triangle poorly defined, ocellar and postocellar seta moderately developed, longer than orbital seta and as long as lateral vertical seta and half as long as medial vertical seta; lateral vertical seta present. Antenna elongate, pedicel and flagellomere 1 about half as long as face and 1.5× as long as proboscis and palp.

Thorax: Shining, almost uniformly pale reddish yellow, with deeper reddish brown vittae on mesonotal scutum (at muscle attachment) and slightly brownish yellow mediotergite; setae and setulae black or brown. Postpronotal seta lacking. One presutural dorsocentral (scapular) and 2 postsutural dorsocentral setae; smaller dorsocentral setae and/ or setulae indistinguishable or missing.

Wing ( Fig. 10 ): 6.0 mm long, with hyaline costal cell; pterostigma and most of cell r 1 yellow; vein R 2+3 with short, bifurcate stump vein slightly distal to dm–cu level; vein R 4+5 setulose from base to at least middle of distance between dm–cu level and apex; stump vein with brown triangular spot separated from brown spot around vein dm–cu; crossvein r–m brown spotted; apices of veins R 4+5 and M with 2 brown spots narrowly connected by pale brown shadow at apex of r 4+5 cell. Upper calypter long black ciliate.

Legs: With yellow coxae, trochanters and femora, and pale brown tibiae and tarsi. All setae and setulae uniformly black. Claws short.

Abdomen: Shining reddish brown, black setulose. Male abdomen (in situ, not dissected) as in all other male specimens of Pyrgotomyia figured in this paper.

Female. Unknown.

Holotype (examined): ♂ KENYA: “Afr. Or. Angl. (Wa-Kikuyu) / Wambogo [0.637368°N 36.979444°E] / Alluaud et Jeannel / Janv. 1912 — 1750 m — St. 32”, “ Pyrgotosoma ciliata H. / F. Hendel det.” (NHMW). Remarks: The holotype male of P. ciliata cannot be distinguished with certainty from the only known male of P. richteri from South Africa, from two males of P. sp. cf. ciliata from Mozambique and a male of P. sp. cf. temporalis , also from Kenya. It may be conspecific either with P. richteri or with P. temporalis , but existing material is insufficient to synonymise them. Further detailed study of this species in its type location could show that P. ciliata is a senior synonym of one of those two species based on females.

Figures

Figs 1–9.Pyrgotomyia spp.:(1) P.ciliata, holotype;(2, 6) P.richteri; (3) P.temporalis; (4, 8) P.callosa sp.n., holotype; (5, 9) P. stuckenbergi sp. n., holotype; (7) P. terebrans sp. n., holotype. (1, 2) head, left view; (3) head, latero-ventral view (antennae, mouthparts and setae not shown); (4–7) supraclypeal sclerite, latero-ventral view; (8, 9) mesonotum, dorsal view.

Figs 10–15. Pyrgotomyia spp., wing: (10) P. ciliata, holotype; (11) P. richteri; (12) P. temporalis; (13) P. terebrans sp. n., holotype; (14) P. callosa sp. n., holotype; (15) P. stuckenbergi sp. n., holotype.