Cydistomyia duplonotata (Ricardo)

Mackerras, I. M., Spratt, D. M. & Yeates, D. K., 2008, Revision of the horse fly genera Lissimas and Cydistomyia (Diptera: Tabanidae: Diachlorini) of Australia, Zootaxa 1886 (1), pp. 1-80 : 45-46

Cydistomyia duplonotata (Ricardo)

( Fig. 33 )

* Tabanus duplonotatus Ricardo, 1914: 396 ; Froggatt 1915: 17; Ferguson 1920: 132; Ferguson & Hill 1920: 464; Surcouf 1921: 67; Hardy 1939: 42, 1944: 84; nec Taylor, 1917a: 755 (= innotabilis Walker); Chainey, 1990: 262. Holotype female, 3 female paratypes, from S Qld, (probably Deception Bay), in BMNH.

Cydistomyia duplonotata ; Mackerras, 1959: 167; Daniels, 1989: 287; Bickel & Elliot, 1998 -2005: 3.

Tabanus parvicallosus ; Taylor, 1917b: 524, 1918: 64, nec Ricardo, 1914: 394; Ferguson & Hill 1920: 464 (corrected misidentification).

Other material examined. 149 ♀, 5 ♂.

Diagnosis. A medium-sized species with grey scutum, yellowish brown abdomen with median dark vitta frequently enclosing narrower vitta of pale hairs, and bright orange basal plate on antennal flagellum contrasting with blackish brown style. Distinguished from C. curvabilis by this feature of antennae and absence of a recurved dorsal angle, differently shaped callus which is markedly less than full width of frons at base, darkened costal cell on wings, and characteristic abdominal pattern. To be distinguished from C. improcerus by pale coloured antennal scape and pedicel, and contrasting colours of basal plate and style, normal and not undersized antennal flagellum, dark brown costal cell, and slightly narrower frons with callus extending over greater width of frons at its base. Length 13–15 mm.

Female. Head. Eyes (relaxed) reddish green, bare (few short hairs just visible at 35X magnification). Frons parallel or slightly divergent, index 4.8–5.1, covered with dull fawn tomentum and short dark brown hairs; ocellar tubercle light brown, bare; callus brown, moderately shiny, slightly less than width of frons at base, with tapering slightly irregular extension usually reaching to junction of upper and middle third of frons. Subcallus and parafacials light fawn yellow; face more greyish; subcallus without hairs; parafacials and face with creamy hairs mixed with a few darker ones; beard yellowish cream. Antennal scape and pedicel light yellowish fawn, with black hairs; basal plate with acute dorsal angle forming short but conspicuous upward pointing tooth not recurved, bright orange to reddish brown, contrasting with dark brown to black style. Palpi yellowish cream, with light yellow and few short black hairs.

Thorax. Scutum and scutellum grey, with olive tint, paler on lateral margins and anteriorly, with erect black and appressed dull yellowish cream hairs; marginal hairs not conspicuous. Pleura grey, with dull cream hairs.

Legs. Femora dark grey, with yellowish cream and some black hairs; tibiae light brownish yellow, with similar hairs; tarsi darker brown, with dark brown hairs.

Wings. Lightly greyish; costal cell dark brown, subcostal cell paler brown; stigma brown, with brown suffusion along radial veins.

Abdomen. Light to medium yellowish brown, with broad median dark grey to blackish vitta which is invaded more or less by pale band at apices of tergites, with narrow median sometimes incomplete vitta of dull creamy hairs overlying the grey, sometimes enclosed pale vitta entirely absent. Abdominal hairs black, except for median vitta and yellowish cream hairs on extreme lateral margins. Venter light brown, with black hairs, pale creamy-haired apical margins on all sternites.

Male. Closely similar to female but more hairy, legs darker, apical abdominal tergites very definitely darkened. Eyes bare (few short scattered hairs barely visible at 35X magnification), uniformly blackish, upper facets not appreciably enlarged. Ocellar tubercle conspicuous, ocelli not observed. Palps subcylindrical, tapering distally to gently rounded tip, fawn, with fine greyish white hairs mixed with a few black ones.

Distribution. Coastal SE QLD to Sydney NSW. QLD: Mullet Ck, Bundaberg, Mar., T.G. Campbell; Bundaberg, Oct., H. Frauca; Watalgan Ra., nr Bundaberg, 457 m, Oct., H. Frauca; 19 km S of Bundaberg (Wallum Reserve), Nov., H. Frauca; Childers, in heath community, Oct., H. Frauca; Eidsvold, Bancroft, Feb., M.J. Mackerras; Coast Ra., nr Biggenden, Oct.–Dec., H. Frauca; Bin Bin Ra., (via Didcot, W of Biggenden), Dec., H. Frauca; Mt Hastings Ck, 15 km S of Biggenden, Nov., H. Frauca; 64 km W of Maryborough; Bauple, S of Maryborough, Mar., Ridley; Murgon, Apr.; Mt Elliot, Cooloola Nat. Pk., Apr., J. and A. Skevington; Planted Ck via Tansey, Dec., G.B. and S.R. Monteith; Woolooga, Dec., J.W. Turner; Upper Noosa R., Nov., A.L. Dyce; Bunya Mountains Nat. Pk., Dec., G. Daniels and M.A. Schneider; Cooyar, biting in rainforest, Mar., E.N. Marks; Buderim Mt, biting, Oct., E.N. Marks; Mooloolah, Dec.; Glass House Mountains, Dec.; Beerburrum, Nov., Wilkinson; Woodford, Nov.; Toorbul Point, biting, Jan., E.N. Marks; Deception Bay, Feb., I.M. and M.J. Mackerras; Brisbane, Oct., A.J. Turner, H. Hacker, Dec., G.H. Hardy, Feb.–Mar., H. Hacker; The Blunder, Brisbane, Oct., C.F. Ashby; Oxley, Deco, I.M. and M.J. Mackerras; Sunnybank, Oct., L. Pottinger; Wacol, Apr., A. Pritchard; Camp Mt, Oct., A. Pritchard, Feb., M.J. Mackerras, H.A. Standfast and R. Fieldhouse; Saltwater Ck, Brisbane, Mar., H.A. Standfast; Moggill, Jan., G. Wolf, Feb., D.M. Spratt; Lake Manchester, Mar., J.R. Wylie; Upper Cedar Ck, Dec., I.M. Mackerras; Mt Mistake, nr Laidley, Jan., D.M. Spratt; Ransome Reserve, Feb.; Blunder Ck, Brisbane, H. Evans and A. Hook; Flagstone Ck, Dec., B. Cantrell; Karawatha Forest, Nov., C.J. Burwell and Wright; Stradbroke Is., Dec., Feb., H. Hacker; Greenbank, Nov., H.A. Standfast; Kholo, nr Ipswich, Deco, M. Colbo; nr Tamborine, Mar., I.M. Mackerras, Kelly, Milliner; Nerang, Oct.; Nerang R., 21 km from Nerang, nr Springbrook Forest, Dec., T.G. Campbell; Canungra, Nov., Bingham; “Glen Witheren” nr Canungra, Dec., G.B. Monteith; McPherson Ra., Feb.–Mar., A.J. Turner; West Burleigh, Nov., I.M. Mackerras; Springbrook, Mar., I.M. and M.J. Mackerras; Mt Lamington, Nov., M.D. Murray; Lamington Nat. Pk., May, I.J. MacKenzie. NSW: Bundjalung Nat. Pk., nr Evans Head, Jan.; Auburn, nr Sydney, May C.L. Lambkin.

Figures

FIGURES 31–33. 31. Cydistomyia pilosus Mackerras & Spratt, sp. nov. frons, palp, antenna, female terminalia, sternite 8, spermathecal bulb. 32. Cydistomyia triangularis Mackerras & Spratt, sp. nov. frons, palp, antenna, female terminalia, sternite 8, spermathecal bulb. 33. Cydistomyia duplonotata (Ricardo) frons, palp, antenna, female terminalia, sternite 8, spermathecal bulb.