Blaena subsulcata Froeschner, 1960

Blaena subsulcata Froeschner, 1960

( Figs 90—96 View Figs 90–96 )

Blaena subsulcata Froeschner, 1960: 464 , 1966: 690; Lis, 1995: 139, 1996: 185.

Redescription

Body. Length 5.75—6.14 (female), 5.87—6.30 (male).

Head ( Fig. 90 View Figs 90–96 ). Black, shiny, paraclypei coarsely punctured; anterior outline diverging from preocular emargination, broadly rounded at apex; paraclypei longer than clypeus and joined anteriorly; the latter strongly convex; paraclypei forming a strong, irregular ridge on either side of clypeus, each paraclypeus with four setigerous punctures bearing long hair-like setae, among them a single preocular; bucculae almost parallel-sided, bare; eyes castaneous, ocular index 3.86 (male), 3.33—3.64 (female); ocelli small, distance between ocelli about 2.3—4.4 times greater than distance between an ocellus and an eye, ocellar index 8.0—8.2; rostrum extending beyond anterior coxae, but not reaching the middle coxae; length of antennal segments: I 0.23—0.29, II 0.23—0.28, III 0.54—0.66, IV 0.67—0.76, V 0.69—0.86.

Prothorax. Pronotum about 1.5—1.8 times broader than long ( Fig. 91 View Figs 90–96 ), black, shiny, coarsely punctured; anterior margin deeply broadly concave, posterior margin almost straight; lateral margins weakly explanate, with a small prebasal angular projection; each submargin with a row of 4—5 setigerous punctures bearing long hair-like seta on anterior lobe, and a single setigerous puncture on the prebasal projection of posterior lobe ( Fig. 91 View Figs 90–96 ); transverse postmedial impression deep and well-developed; midline weakly carinate. Prosternum black, punctured; prosternal carinae well-developed, high, bearing a few hairs. Propleuron black, coarsely punctured, its anterior margin bare, lateral parts shallowly punctured, bare.

Mesothorax. Scutellum black, apically somewhat paler, bare, as wide as or slightly wider than long, punctation of disc dense, midline sometimes broadly but weakly sulcate from base to past middle, sometimes sulcus hardly visible, apex with well developed median carina, usually paler than remaining part of disc. Anterior part of mesopleuron punctured; evaporative area elongated, reaching lateral margin of mesopleuron. Corium blackish brown or dark castaneous, coarsely punctured, costal margin without setigerous punctures; membrane pale brown, semihyaline, normally developed, narrower than abdomen and almost reaching its tip, veins dark brown, irregularly reticulate; base of membrane with pale irregular spots.

Metathorax. Metapleural evaporatorium large, almost reaching lateral margin of metapleuron, peritreme strongly elongated.

Legs. Femora dark brown, finely pilose, without spines; tibiae straight, brown, bearing short black fine spines and pale hairs; anterior tibiae subterete; male posterior femora and tibiae unmodified.

Abdomen. Sterna convex, weakly impressed sublaterally, black or blackish brown, shiny, punctation laterally denser and coarser than medially, bearing lateral impunctate band on visible segments IV in males; lateral margin of each segment without or with a single setigerous tubercles, and with small, sometimes hardly visible posteriorly projecting spine. Male genital capsule as in Fig. 96 View Figs 90–96 , paramere as in Figs 92—94 View Figs 90–96 . Female genital plates very broad ( Fig. 95 View Figs 90–96 ), sparsely punctate.

Material examined. NORTHERN TERRITORY: 1 female, King River, 24.12.65, Blaena subsulcata Frschn., comp. with type, R.C. Froeschner ̕61 ( MVNH) ; QUEENSLAND: 1 male, S.E. Qld., Somerset Dam , 24.iii.1971, G.B. Monteith ( UQIC) ; 1 female, 10 km E of Heathlands Airstrip, Cape York Pen. , N. Qld., 5.vii.1975, G.B. Monteith ( QMBA) .

Distribution. Northern Territory, Queensland.