Anabarhynchus shiptonsflatensis Ferguson

Ferguson, David J., Irwin, Michael E. & Yeates, David K., 2013, New species of Anabarhynchus Macquart (Diptera: Therevidae) from arid and monsoon tropical Australia, Zootaxa 3680 (1), pp. 55-95 : 84-88

Anabarhynchus shiptonsflatensis Ferguson sp. n.

( Figures 23 , 24 , 25 )

Type material. Holotype: Female. AUSTRALIA: Queensland: 15.47S 145.14E, Shiptons Flat QLD, 19.X.1980, D.H. Colless, (Malaise Trap) ( ANIC _29:028980) ( ANIC). Condition: Pinned dorsally on stainless steel pin; costal edge of right wing lost; glue repair to cracked costal edge to left wing.

Paratypes: 1 Female. AUSTRALIA: Queensland: 1Ƥ same as holotype; ( ANIC _29:028979) ( ANIC).

Diagnosis. Lower frons slightly raised upper frons flat. Female frons width at anterior ocellus 2.75x ocellus. Frontal setae long and erect. Scutum brownish-grey tones with indistinct lines. Wing cell m3 open. Postspiracular pile present; katepisternum sparse pile dorsocentrally; prosternal furrow may have a couple of hairs present. Forefemur with 6–7 pd, 4–5 pv, mid-femur 1–2 pd, 2–3 pv, hind femur 1 av; all femora yellow-brown; dorsal surfaces with appressed pale pile, ventrally semi-erect; admix with short black setae. Abdominal integument yellow-brown and dark-brown.

Description. Female: Body length: 9.5mm. Wing length: 7.5mm. Head. Integument black. Frons slightly raised; frons width at anterior ocellus 2.75x ocellus; ocellar tubercle flat; antennal base positioned low on frons, face and lower frons protruding; parafacials brownish-grey, area between eye and antenna with irregular moving mark created by light redirecting pubescence, frons brownish, pair of blackish-brown marks in dimple beside eye at middle frons; frons setae long and erect in two bands that parallel eye margin, re-centring above antenna sockets at lower frons, lower frons setae nearly as long as scape. Scape length 2x width: scape and pedicel grey, 1st segment of flagellum brownish grey with a short black setae on basal dorsal half, flagellar style black two thirds length of flagellum. Occiput convex with brownish grey pubescence to dorsally surface, laterally with bluish grey pubescence, several indistinct rows of black macrosetae 38–39 setae to each side; postocciput to gena grey and with long, pale, hair-like pile. Palpus basally dark grey apical half yellow-brown, supplies with off white pile; labellum grey; prementum with black setae. Thorax. Integument black. Scutal chaetotaxy black (pairs): np, 4; sa, 2; pa, 1; dc, 2; sc, 2. Scutum with thin dark grey dorsal line within broader brownish-grey band, margined by yellowish-brown bands, dark grey marks perimeter raised areas pre and post-transverse suture; scutal surface with short appressed dark setae. Postspiracular pile present; katepisternum with pale pile on upper area; prosternal furrowwith a couple of hairs to the anterior edge; pleuron and coxae with grey pubescence, coxae with elongate pale pile admixed black macrosetae. Wing. Cell m3 open; hyaline with brown tint, dark brown veins; light brown infuscate to apical end of wing; stigma brown; costal setae beyond humeral cross-vein biserially arranged. Haltere. Pedicel ochre brown; scabellum ochre brown. Legs. Forefemur, 6–7 pd strong with weak, 5 pv weak; mid-femur 1– 2 pd, 2–3 pv; hind femur 1 av macrosetae. Forefemur yellow-brown with ventral basal edge dark grey; middle and hind femur yellow-brown with yellowish-grey pubescence; all femora with appressed pale pile dorsally, ventrally semi-erect; admix with short black setae; all tibiae and basitarsus yellow-brown apically darked. Abdomen. Integument yellow-brown and dark-brown; tergites 2–7 anterior bands broadly dark-brown, with appressed black pile; posterolaterally yellow-brown with pale appressed pile; tergites 5–7 with thin grey pubescence surface, distributed with sparse erect black pile. Terminalia. Paratype female (ANIC_29:028979): sternite 8 ( Fig. 25 f), anterior half broad with slightly concave anterior edge; anterior half with slightly ridged surface; posterior half tapered, apically with bi-lobed section with weak and sparse setae either side of centre line; centre line thinly sclerotised; anterior three quarters with sparse elongate black setae either side of centre line. Furca ( Fig. 25 e), egg shaped; posterior frame broad with thin frame; middle frame strong with weakly sclerotised posteriorly directed internal struts; anterior beam narrow,lateral edges with small anteriorly directed projections; anteroventral lobe absent.

Male. Unknown.

Variation. Female: Body length: 9.5mm. Wing length: 8mm. Frons width at anterior ocellar 3x ocellus; occiput macrosetae 32–38 each side. Katepisternum with only a few hairs pile dorsal central. Prosternal furrow without hair’s. Forefemur, with 5–6 pd to apical two thirds, 4–5 pv mixed with numerous very small weak; midfemur, 1 pd apical half, 2–3 pv weak apical half mixed with numerous very small weak; hind femur, 1 av macrosetae.

Etymology. The specific epithet is derived from the geographic location ‘Shipton’s Flat’ where the type specimens were collected.

Comments. Known from two female specimens collected near Shiptons Flat, Cape York, Queensland in October. Keys to couplet 26 in Lyneborg (2001) before characters no longer relate. brown.

The distinctive ‘blinking’ mid-frons spots places A. shiptonsflatensis sp. n., with either the flavus or ornatifrons species-group’s. The raised frons with erect pile and a irregular dark grey mark between the antenna and eye places it best with the flavus specie-group.

Figures

FIGURE 23. Anabarhynchus shiptonsflatensis sp. n., holotype female, (ANIC _ 29: 028980): lateral view.

FIGURE 24. Anabarhynchus shiptonsflatensis sp. n., holotype female, (ANIC _ 29: 028980): oblique view. Ventral view terminalia (inset) showing sternite 8.

FIGURE 25. Anabarhynchus shiptonsflatensis sp. n., holotype female (ANIC _ 29: 028979): E, furca; F sternite 8; Scale line = 0.5 mm.