Cydistomyia monteithi Mackerras & Spratt, 2008

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 : 36-37

Cydistomyia monteithi Mackerras & Spratt , sp. nov.

( Fig. 26 )

Type material. Holotype female, NSW, Mt Keira nr Wollongong, Feb., G.B. Monteith ( QM T#144400 ).

Non-type material examined. NSW: 2♀ Mt Keira nr Wollongong, 15.i.1949, D.A. Walsh ( ANIC) .

Diagnosis. A small plain dark brown species to be distinguished from C. sabulosus by uniformly grey-brown wings without brown suffusion in any cells, along wing veins nor on stigma, and triangular callus with extension reaching only to middle of frons. Length 12mm.

Female. Head. Eyes (relaxed) red-brown, bare. Frons slightly divergent, narrow, index 4.1, with dark brown tomentum, with appressed long pale brown hairs; vertex flat, vertical triangle and ocellar tubercle not observed; callus brown, bulging, triangular, about one half width of frons at base, with extension reaching to middle of frons. Subcallus greyish brown, no hairs; parafacials and face greyish brown, with long black hairs; beard mixed black and white hairs. Antennae uniform greyish brown, scape one and a half times as long as wide, with long black hairs especially ventrally; pedicel wider than long with short black hairs; basal plate with small gently rounded dorsal angle and small ventral bump. Palpi narrow, greyish brown, with dense relatively long black hairs.

Thorax. Dark brown with short orange-brown hairs, Similarly on scutellum but longer, especially on posterior margin

Legs. Legs uniform brown with short black hairs on forelegs, mixed short black and long white hairs on other legs.

Wings. Uniformly greyish brown, without brown suffusion in cells, along vein margins or on stigma.

Abdomen. Dark brown with black hairs, with pale bands with relatively long white hairs on apical margins of tergites, slightly more pronounced on lateral margins of tergites. Venter similar, with white hairs on apical bands of sternites slightly more conspicuous..

Distribution. Known only from type locality near Wollongong, NSW.

Etymology. The specific epithet is in honour of Dr. Geoff Monteith and his tireless collecting efforts in support of entomology in Australia.

Figures

FIGURES 25–27. 25. Cydistomyia sabulosus Mackerras & Spratt, sp. nov. frons, palp, antenna. 26. Cydistomyia monteithi Mackerras & Spratt, sp. nov. frons, palp, antenna. 27. Cydistomyia nigropicta (Macquart) frons, palp, antenna, female terminalia, sternite 8, spermathecal bulb.