Thevenetimyia longipalpis ( Hardy, 1921 )

Li, Xuankun, Rodrigues, Paula Fernanda Motta, Lamas, Carlos José Einicker & Yeates, David K., 2018, A Review of the Australian Species of Thevenetimyia Bigot, 1875 (Bombyliidae, Bombyliinae, Eclimini), with Description of Four New Species and the Pupal Case of T. longipalpis (Hardy), Records of the Australian Museum 70 (3), pp. 331-375 : 349-353

Thevenetimyia longipalpis ( Hardy, 1921)

Figs 12–15

Eclimus longipalpis Hardy, 1921: 63 . Type-locality: Australia (NSW) ; holotype, AM .

Thevenetimyia longipalpis ( Hardy, 1921) .– Hall, 1969: 43.

Types and other specimens examined. Holotype ♂, Australia, NSW, Sydney , 8 Dec 1918, G. H. Hardy, AM K.44412 ( Fig. 12 ); allotype ♀, QLD, Chinchilla , Nov 1927, A. P. Dodd, AM K.60172. ACT, 2♂♂, Mt Clear , emg Jan 1981, K. R. Pullen, from Acacia dealbata infested with Bostrychidae + wasp parasite, ANIC 29-041284 – 85 ; 1♂, Black Mtn , Jan 1988, M. E. Irwin, Malaise trap, ANIC 29- 041286 ; 3♂♂, Mt Ainslie , 35°16'14.56"S 149°09'28.91"E, 8 Feb 2016, X. Li & A. Landford , ANIC 29-038969 , 29- 038920 – 21 . NSW, 2♂♂ 2♀♀, Doughboy , 12 Oct 1956, E. F. Riek, ANIC 29-041287 , 29-041290 ; 1♂, Forbes Creek , 1 km East, on flowering Calytrix , 880 m, 35°25'48.32"S 149°30'12.26"E, 9 Nov 2014, D. J. Ferguson, ANIC 29- 041291 ; 2♂♂, 24 km W Grafton, Hilltop , 8 Sep 1983, D. Yeates, QM; 1♂, 24 km W Grafton, 19–20 Sep 1981, C. Hagan, QM. QLD, 3♂♂, Carnarvon National Park , Mt Moffat Sect. , Mt Moffat summit, 1097 m, 25°03'35"S 148°02'38"E, 27 Nov 1997, J. Skevington, C. Lambkin, S. Evans, ANIC 29-041292 – 94 ; 2♂♂, 6 km N Taroom, 25°36'S 149°46'E, 200 m, 2 Oct 1992, G. Daniels, AM K.308709–10; 1♂, Carnarvon Nat. Park , Ald Mt Moffat Section , 1097 m summit of Mt Moffatt , 25°04'S 148°03'E, 23 Nov 1995, D. K. Yeates, C. J. Burwell, QM; 3♂♂, Carnarvon Nat. Park , Ald Mt Moffat Section , 1097 m summit of Mt Moffatt , 25°04'S 148°03'E, 25 Nov 1995, D. K. Yeates, C. J. Burwell, QM; 10♂♂, Mt Moffat NP, SQC, Mt Moffatt summit, 1097 m, 25°04'S 148°03'E, 25 Nov 1997, C. J. Burwell, QM; 1♂, 9 km SW Stanthorpe, 5 Nov 1981, E. Exley, J. King, QM; 1♂, Severnlea via Stanthorpe, on Eucaliptus sp., 10 Dec 1980, E. R. Exley, J. King, QM; 1♀, Chinchilla, Nov 1927, A. P. Dodd [7273, Press by Com Inst Ent B M 1962-1, Eclimus longipalpis Hardy R. W. Crosskey det. 1962], NHMUK. SA, 1♂, Flinders Ranges NP, Heysen Hill, Brachina Gorge, 31°20'02"S 138°33'10"E, 9 Oct 1997, J. & A. Skevington, C. Lambkin, ANIC 29-041295 . VIC, 1♂ 1♀, Brisbane Ranges, F. E. Wilson, Dec 1929, NMV; 1♂, Melton, F. E. Wilson, NMV. WA, 2♂♂, Borden, 20 Nov 1958, E. F. Riek, ANIC 29-041296 – 97 .

Diagnosis. Small-sized Thevenetimyia , wing membrane mostly hyaline, with a dark brown spot around base of cell r 1, and a large dark mark on anterior-apical of wing; costa with two rows of small spines; scutum and scutellum with golden hairs; ejaculatory apodeme and lateral ejaculatory process small, vestigial.

Redescription. Male. Body length 9.1–14.0 mm, wing length 8.6–11.9 mm.

Head. Head about 1.4× wider than long, mostly blackish with thick pale pruinescence and covered in admixed white to blackish brown hairs. Eye widely connected, by 1.5× length of ocellar tubercle. Frons slender and long, upper triangular section small, lower triangular section black with thin pale pruinescence, middle narrow part about 0.7× length of frons. Ocellar tubercle slightly raised, brown to blackish brown with grey pruinescence, with blackish brown hairs. Face with thick pale pruinescence and with brown hairs on laterodorsal area, parafacial area dark brown and bare. Gena with thick pale pruinescence and long white hairs. Clypeus swollen, with thick pale pruinescence and long blackish brown hairs. Occiput with long white hairs except dorsal margin admixed with brown to black hairs. Posterior eye margin slightly sinuous. Antennae blackish brown; scape and pedicel with thin pale pruinescence and black hairs, ventral hairs of scape longer, hairs on pedicel short. Scape 3.3× as long as wide, and 3.0× as long as pedicel, uniform from base to apex. Pedicel 1.0× as long as wide. Flagellum 3.7× as long as wide, 1.1× as long as scape+pedicel (1.5× as long as scape), conical and slightly laterally compressed, one-segmented with apical style ( Fig. 13c ). Palp thin and long, extending beyond oral cavity, black with blackish brown hairs, two-segmented, with palpal pit. Mouthparts slender, 2.7× as long as eye length (1.8× as long as head length), labella thin and filiform ( Fig. 13f ).

Thorax. Integumental colour of scutum and scutellum mostly black with sparse grey pruinescence, pruinescence more dense around margins. Scutum and scutellum with admixed white and golden hairs and long pale yellow scales. Three notopleural setae present. Postalar callus and posterior margin of scutellum with strong hairs. Notopleural setae and strong hairs on postalar callus and scutellum pale yellow. Pleura and coxae black with thick grey pruinescence, anepisternum and dorsal half of katepisternum with long white to pale yellow hairs, metepisternum with moderate long white scales, and mediotergite with dense white hairs and setae, anepimeron, meron and laterotergite bare.

Legs. Legs mostly blackish brown. Femora mostly covered with pale yellow scales, except posterior face with white scales, fore, mid and base of hind femora with long white hairs.Apical half of hind femur with few short bristles. Tibiae covered with admixed pale yellow, brown and black scales. Other hairs and bristles on legs short and blackish brown to black. Fore tibia 2.0× longer than fore basitarsus, mid tibia 2.1× longer than mid basitarsus, hind tibia 2.1× longer than hind basitarsus.

Wings. Wing membrane mostly hyaline, area around base of cell r 1, cell r 2+3 and middle of cell br with a dark brown spot, and a large dark area bounded by apical half of costa, vein R 4, and crossvein dm-cu, the dark area extend to base of cell m 1, cell m 2 and cell r 4, apical half of cell dm and apex of cell br. Cell r 5 widely open; cell br much longer than cell bm, crossvein r-m arising a little over half way from the base of cell dm; crossvein m-m long, and 2.0× as long as crossvein r-m; cell cup open ( Fig. 13d ). Costa with two rows of short, thick spines. Haltere stem pale yellow, knob brownish yellow.

Abdomen. Integumental colour of tergites black with thin pale pruinescence, except lateral margin with thick pruinescence. Tergites mostly covered with black scales and short black hairs. Tergite 1 covered with long white scales and hairs, tergite 2 admixed with white hairs. Tergites 2 to 6 with white scales on posterior margin. Sternites with dark brown integumental colour except posterior margins yellow, with thick grey pruinescence and white hairs. Genitalia. Epandrium wide and short, posterior margin slightly convex ( Fig. 15d ). Hypandrium absent. Gonocoxal apex slightly narrower than the base in dorsal view, ejaculatory apodeme small ( Figs 15a, b ); gonocoxal apodeme strong and incurved; lateral ejaculatory process small, vestigial; inner apex of gonocoxite rounded, elongate and broad; outer apex of gonocoxite rounded; dorsal bridge without lateral hollow ( Fig. 15c ); gonostylus slender and pointed dorsally, 3.0× longer than wide.

Female. Body length 9.9 mm, wing length 9.1 mm. Very similar to male, except frons black with thick pale pruinescence except middle area of dorsal half, 2.3× as wide as ocellar tubercle, frons with blackish brown hairs ( Fig. 14c ). Costa of wing without small spines. Posterior margin of tergite 7 with slender dorsal median apodeme. Tergite 7 with ventral spines. Tergite 8 with a row of sparse hairs, 16 acanthophorite spines present, lateral spines long, spines in middle short, apex of spines expanded. Furca straight and connected at apex. Sperm pump strong and nearly as long as furca, not clothed in longitudinal muscle, with few lateral papillae; distal spermathecal duct short but strong; spermatheca elongate, cylindrical ( Fig. 15g ).

Remarks. Thevenetimyia longipalpis ( Hardy, 1921) is so far the most widely distributed Australian Thevenetimyia species , it occurs in all the states except the Northern Territory and Tasmania.

Distribution. ACT, NSW, QLD, SA, VIC, WA.

Figures

Figure 12. Thevenetimyia longipalpis (Hardy, 1921) ♂ holotype: (a) dorsal; (b) lateral. Scale bars = 1 mm.

Figure 13. Thevenetimyia longipalpis (Hardy, 1921) ♂: (a) dorsal; (b) lateral; (c) flagellum; (d) wing; (e) head, dorsal; (f) head, lateral; (g) head, frontal; (h) head, profile. Scale bars = 1 mm (a, b, d–h); = 0.1 mm (c).

Figure 14. Thevenetimyia longipalpis (Hardy, 1921) ♀: (a) dorsal; (b) lateral; (c) head, dorsal; (d) head, lateral; (e) head, frontal; (f) head, profile. Scale bars = 1 mm.

Figure 15. Thevenetimyia longipalpis (Hardy, 1921) genitalia (a–e ♂; f, g ♀): (a) genital capsule, dorsal; (b) genital capsule, ventral; (c) genital capsule, lateral; (d) epandrium, dorsal; (e) epandrium, lateral; (f) sternite 8, ventral; (g) genitalia and spermathecae. Scale bars = 0.1 mm.