Bonjeania argentea, Winterton, Shaun L., 2007

Winterton, Shaun L., 2007, New species of Acraspisoides Hill & Winterton and Bonjeania Irwin & Lyneborg (Diptera: Therevidae: Agapophytinae), with the description of a new genus, Zootaxa 1438, pp. 1-25 : 9-11

Bonjeania argentea sp. nov.

( Figure 3 )

Holotype male, AUSTRALIA: VICTORIA: Fiddlers Creek, Cann R[iver]. Road, 37°17’45”S, 149°12’47”E, 25.xi.1995, M.G. Jefferies (MEI 109808) ( ANIC).

Paratypes, AUSTRALIA: VICTORIA: male, 2 females, same data as holotype (MEI 109611-2 [pinned together], 109814) ( ANIC). AUSTRALIAN CAPITAL TERRITORY: 3 males, female, Barton, 15.x.1981, M.G. Jefferies (MEI 109609-10 [pinned together]) ( QDPI), (MEI 109811-12) ( ANIC); male, Barton, 4.xi. 1981, M.G. Jefferies (MEI 109806) ( ANIC); male, female, Capital Hill, 13.x.1981, M.G. Jefferies (MEI 109605-6 [pinned together]) ( ANIC); NEW SOUTH WALES: male, Gilgandra Flora Reserve, 8 km NE Gilgandra, 14.viii.1983, M.E. Irwin (MEI 130013) ( MEIC).

Other material examined. 3 males, 2 females, bushland east of Gilmour, 5–15.xi.2003 [multiple dates in this range], D.J. Ferguson, Malaise trap ( ANIC 29 15813, 15686, 15812, 15687, 17779) ( ANIC).

Diagnosis. Frons only slightly protruding, male frons slightly wider than ocellar tubercle at narrowest point; male abdomen with silver velutum; male genitalia with epandrium very short, much wider than long; aedeagus and gonocoxal apodemes not greatly elongate, gonocoxal apodemes about equal length to gonocoxites; distiphallus short, slightly curved ventrally; hypandrium relatively small.

Description. Male. Body length: 7.0 mm.

Head. Frons wider than ocellar tubercle at narrowest point; antennal base positioned low on frons; frons flat, slightly rugose; frons and face only slightly protruding, glossy black with sparsely distributed, elongate setae; dark setae on upper frons, pale setae laterally on lower frons and face, silver pubescence medially on upper frons, laterally along margin of eye, and on face beside and below antennal base; ocellar tubercle slightly raised, black with elongate, dark setae; occiput convex, black, overlain with grey pubescence, single row of relatively long, black, postocular setae dorsally; gena black, overlain with dense, silver-white pubescence admixed with long, white setae; palp and labellum brown with scattered dark and pale setae; antenna shorter than head, brown, overlain with brown-grey pubescence; numerous elongate setae on scape, pedicel, and base of flagellum; setae pale ventrally, darker dorsally on scape and pedicel.

Thorax. Glossy black; scutum overlain with brown pubescence, pale grey to white pubescent laterally and posteriorly, uniformly admixed with short, dark setae; scutal macrosetae black; scutellum overlain with olivaceous pubescence, paler laterally; pleuron and coxae covered with dense, silver pubescence except on anepisternum, anepimeron and katatergite; elongate, pale setae on anepisternum, katepisternum, katatergite and coxae; legs dark brown; tibia and basitarsi dark yellow basally; elongate, pale setae on femora; wing hyaline with translucent brown infuscation distally in cells bm, d and basally in radial cell r5; venation brown; haltere stem brown, knob white; scutal chaetotaxy (pairs): np, 3–4; sa, 1–2; pa, 1; dc, 3–6; sc, 1.

Abdomen. Matte dark brown with dark yellow laterally and ventrally on each segment, covered with scattered, pale setae, setae elongate laterally; tergite 1 with silver-white pubescence laterally, segments 2–7 covered with dense, silver velutum dorsally; intersegmental membrane of segments 2–4 white; setae on terminalia pale; terminalia dark.

Male genitalia. Genitalia similar shape to B. segnis and B. jefferiesi sp. nov. Epandrium very short, medially emarginated ( Fig. 3 A); cercus slightly elongate; tergite 8 medially emarginate ( Fig. 3 B); gonocoxal process shorter than gonostylus ( Figs 3 C–D); inner gonocoxal process equal length to gonostylus; gonocoxal apodeme shorter than gonocoxites; medial atrium present, pubescence only a small medial patch; hypandrium small, triangular; sternite 8 broadly trapezoidal ( Fig. 3 E); aedeagus relatively short, distiphallus curved dorsally along length ( Fig. 3 F–G); dorsal apodeme of parameral sheath absent; lateral ejaculatory apodeme and ejaculatory apodeme enlarged; arms of ventral apodeme of aedeagal sheath relatively short, rounded.

Female. Body length: 7.0–9.0 mm.

Similar to male except: Frons only slightly wider, abdomen wholly black, shorter setae on thorax and abdomen, and silver abdominal velutum lacking.

Female genitalia. Spermathecal sac elongate, cordate basally, single lobe, spermathecal sac duct relatively long, without sclerotised band, single membranous, round spermatheca; spermathecal duct joined to spermathecal sac duct proximal to base of spermathecal sac; accessory gland elongate, relatively small.

Etymology. The specific epithet is derived from Latin: argentum, silver; referring to the silver velutum on the male abdomen.

Comments. Bonjeania argentea sp. nov. is closely related to B. jefferiesi sp. nov. and B. segnis and is very similar in appearance. This species is known from New South Wales and the Australian Capital Territory.

Figures

FIGURE 3. Bonjeania argentea sp. nov., male genitalia: A, epandrium, dorsal view; B, tergite 8, dorsal view; C, gonocoxite, lateral view; D, gonocoxites, ventral view; E, sternite 8, ventral view; F, aedeagus, lateral view; G, same, dorsal view. Scale line = 0.5 mm.