Blaena coarctata Froeschner, 1960

Blaena coarctata Froeschner, 1960

( Figs 19—27 View Fig View Figs 20–27 )

Blaena coarctata Froeschner, 1960: 457 , 1966: 690; Lis, 1995: 138, 1996: 183.

Redescription

Body. Slender, almost parallel-sided ( Fig. 19 View Fig ), length 5.02—5.55 (female), 5.10—5.85 (male).

Head ( Fig. 20 View Figs 20–27 ). Black or blackish brown, paraclypei coarsely punctured; lateral margins slightly narrowed anteriorly; paraclypei longer than clypeus and joined anteriorly; clypeus somewhat convex, bare; each paraclypeus with 6—9 long hair-like setae, among them 2—3 submarginal ones; bucculae bearing fine hairs; ocular index 2.83—3.29 (male), 3.09—3.47 (female); ocelli small, a distance between ocelli about 2.5—3.5 times longer than the distance between an ocellus and the eye, ocellar index 7.6—11.3; rostrum extending beyond anterior coxae, sometimes reaching base of middle coxae; length of antennal segments: I 0.21—0.29, II 0.29—0.43, III 0.50—0.74, IV 0.69—1.13, V 0.83—1.03.

Prothorax. Pronotum about 1.2—1.4 times broader than long, black or blackish brown, coarsely punctured, conspicuously narrowed behind the middle ( Fig. 21 View Figs 20–27 ); dorsal surface of disc with a few scattered hairs; anterior margin broadly concave, middle of posterior margin concave; lateral margins entire, sometimes with very small tubercles at bases of setigerous punctures, each submargin with a row of 6—9 setigerous punctures bearing long hair-like setae (5—7 on anterior lobe, 1—2 on the posterior); transverse discal postmedial impression well-developed, broad. Prosternum black, punctured; prosternal carinae vague, bearing golden-brown woolly hairs. Propleuron black, shiny, coarsely punctured, its anterior margin with woolly hairs, lateral parts sparsely, shallowly punctured, bare.

Mesothorax. Scutellum ( Fig. 19 View Fig ) black, shiny, slightly broader than long, punctation of disc a little more crowded than that of pronotum, median discal carina hardly visible; pilosity of scutellar disc very sparse, sometimes absent. Anterior part of mesopleuron coarsely punctured, evaporative area rounded, elongated, laterally narrowed and reaching lateral margin of mesopleuron. Corium brown, dark brown, or almost black, shiny, punctured with punctures larger than those of scutellum and pronotum ( Fig. 19 View Fig ); costal margin without setigerous punctures bearing long hair-like setae, surface with scattered short hairs; membrane narrow, reaching the tip of abdomen (macropterous form), or shortened to intersegmental suture 6/7 of abdomen (submacropterous form); veins dark, straight, not reticulate.

Metathorax. Metapleural evaporatorium, almost reaching lateral margin of metapleuron.

Legs. Anterior pair brown, shiny, bearing numerous erect light hairs; anterior tibiae apically broadened. Femora of middle pair with a row of small spines in both males and females; middle tibiae straight with black spines. Male hind femora with two rows of sharp spines ventrally ( Fig. 22 View Figs 20–27 ), female hind femora with very small tubercles ventrally; male hind tibiae clearly recurved basally and apically ( Fig. 22 View Figs 20–27 ), armed with strong spines and hairs; female hind tibiae straight, spines and hairs less numerous.

Abdomen. Sterna convex, dark brown, shiny, densely and uniformly punctured across entire width in females, males with a narrow impunctate and shiny strip laterally on III, IV and V sterna; lateral furrow shallow; posterior margin of surface IV and V with numerous well visible spines, lateral margins of each segment with 2—4 setigerous punctures bearing long hair-like setae, and with small posteriorly projecting spine. Male genital capsule as in Fig. 26 View Figs 20–27 , paramere as in Figs 23—25 View Figs 20–27 . Female genital plates narrow ( Fig. 27 View Figs 20–27 ), sparsely punctate.

Material examined. NEW SOUTH WALES: 1 male (paratype), Mulwala 1.6.53, F.E. Wilson, Blaena coarctata det. Froeschner ( SAMA) ; 1 male, Tumutu R. 1956, J. Sedlacek ( BPBM) ; QUEENSLAND: 1 male, C. Queensland, 22.02'S 118.03'E, Morananbuh , 6 km S. 5646, 25 Jun.-20 Dec. 1997, G.B. Monteith & E. Kruck, flight intercept, box flat ( QMBA) ; 1 male 1 female, S.W. Queensland, Morney Creek, 120 km W. of Windorah , 24 Sept. 1983, G.B. Monteith ( QMBA, DBUO) ; 1 female, S.W. Queensland, 10 km W of Windorah , 23 Sept. 1983, G.B. Monteith ( QMBA) ; 2 females, S.W. Queensland, 20 km E of Thylunga , 22 Sept. 1983, G.B. Monteith ( QMBA, DBUO) ; 1 female, W. Queensland, Stonehenge , 16 Oct. 1968, G.B. Monteith ( UQIC) ; SOUTH AUSTRALIA: 1 male (paratype), 1 female (paratype), Woodforde Cr., Andamooka Rgs. , 31 Aug. 1948, G.F. Gross, Blaena coarctata det. R.C. Froeschner ( SAMA) ; 3 males, Gawler Ranges, Kolay Dam , 32.33'S 135.36'E, Paney Stn., pitfalls, 7-11 Dec. 1989, J. Forrest ( SAMA, DBUO) ; VICTORIA: 1 female, Ultima, 8. 1915, comp. with type, Blaena coarctata det. R.C. Froeschner 61' ( MVNH) ; WESTERN AUSTRALIA: 3 males 3 females, Tallering Stn. , 1.IX.1976, R.P. McMillan, under rock ( WAMP, DBUO) .

Distribution. New South Wales, Queensland (first record), South Australia, Victoria, Western Australia (first record).