Blaena pseudosetosa, LIS & HEYNA, 2001

Blaena pseudosetosa sp. n.

( Figs 58–67 View Fig View Figs 59–67 )

Description

Body. Length 5.15 (holotype male only - Fig. 58 View Fig ).

Head ( Fig. 59 View Figs 59–67 ). Black, shiny, punctured and bearing numerous long hairs; lateral margins almost parallel-sided anterior to eyes; paraclypei longer than clypeus, the latter slightly convex; each paraclypeus with a submarginal row of 5–6 long hair-like setae; bucculae sparsely finely pilose; ocular index 3.57; ocelli small, distance between ocelli about 2.60 times greater than the distance between an ocellus and an eye, ocellar index about 8.2; rostrum extending beyond anterior coxae; length of antennal segments: I 0.27, II 0.29, III 0.41, IV 0.48, V 0.46.

Prothorax. Pronotum black, shiny, coarsely punctured, about 1.5 times broader than long ( Fig. 62 View Figs 59–67 ), lateral margins dark castaneous; its dorsal surface with scattered long hairs; anterior margin deeply broadly concave, posterior margin slightly concave centrally; lateral margins not serrated, each submargin with a row of 21—23 long hair-like setae; transverse postmedial impression broad and shallow. Prosternum black, punctured; prosternal carinae vague, low, pilosity hardly visible. Propleuron black, shiny, coarsely punctured, its anterior margin with woolly hairs, lateral parts with single shallow punctures.

Mesothorax. Scutellum black, wider than long, punctation of disc coarse, median discal carina vague; pilosity of scutellar disc scattered. Anterior part of mesopleuron punctured, evaporative area narrow, laterally reaching margin of mesopleuron ( Fig. 63 View Figs 59–67 ). Corium dark brown with punctures darker than disc, costal margin with 14—17 setigerous punctures bearing long hair-like setae; membrane normally developed, brown with dark, branched veins.

Metathorax. Metapleural evaporatorium narrow and elongated, not reaching lateral margin of metapleuron ( Fig. 63 View Figs 59–67 ), peritreme elongated.

Legs. Anterior femora dark brown, bearing numerous erect light coloured hairs; anterior tibiae moderately broadened apically. Femora of middle pair with 4 wellvisible spines on the ventral side ( Fig. 60 View Figs 59–67 ); middle tibiae straight with black spines. Hind femora with a row of 7 well-developed spines ventrally ( Fig. 61 View Figs 59–67 ); hind tibiae curved apically ( Fig. 61 View Figs 59–67 ), bearing two rows of numerous short black spines on inner margin, pilosity of apical part denser than that of basal.

Abdomen. Sterna black and shiny, convex, vaguely impressed sublaterally, entirely coarsely punctured, except for lateral impunctate band on visible segments IV, and partly III and V; posterior margin of VI sternum with strong spines; lateral margins of each segment with a row of 6 setigerous punctures, and with well-developed posteriorly projecting spine. Male genital capsule as in Fig. 67 View Figs 59–67 , paramere as in Figs 64–66 View Figs 59–67 .

Material examined. Holotype male: WESTERN AUSTRALIA: Capricorn Road-House, ca. 14 km SSE of Newman , 5 June 1990 R.P. McMillan ( WAMP) .

Etymology. The species name indicates its similarity to B. setosa.

Comparative notes

This new species is best characterized by the numerous long hair-like setae on head (paraclypeus with about a dozen long hair-like setae, among these 5–6 submarginal ones), and on body margins (lateral submargins of pronotum with a row of 21–23 setigerous punctures bearing long hair-like setae, costal margin with a row of 14–17 setigerous punctures).

In terms of the pilosity of the body this new species is allied to B. multitricha, but differs from the latter in its poorly developed prosternal carinae, as well as in the shape of male genital capsule ( Figs 47 View Figs 41–48 , 67 View Figs 59–67 ), paramere ( Figs 44—46 View Figs 41–48 , 64—66 View Figs 59–67 ), and hind legs ( Figs 41 View Figs 41–48 , 61 View Figs 59–67 ).

Male of this new species is also similar to those of B. setosa, but is easily recognizable as its abdominal sterna bear a vague sublateral groove (abdominal sterna sublaterally bear distinct, broad, deep groove in B. setosa), and the number of setigerous punctures bearing long hair-like setae on lateral body margins ( B. pseudosetosa : pronotum 21-23, costa 14-17; B. setosa: pronotum 9-13, costa 4-6). Moreover, both species differ in the shape of male hind tibiae ( Figs 61 View Figs 59–67 , 82 View Figs 80–89 ).

Distribution. Western Australia.