Scydmaenilla (Scydmaenillunia) adelaidensis Franz

(Figs. 98, 104, 110)

Stenichnus (Scydmaenilla) adelaidensis Franz, 1975: 137 .

Type material studied. Holotype: Ƥ: four labels (Fig. 110): "Umg. Adelaide / S-Australia / lg.H.Franz 1970" and "Pa 85" on the reverse side [white, printed, reverse handwritten in blue],"Ƥ" [white with black margins, printed], " Stenichnus / ( Scydmaenilla) / adelaidensis m. / det.H.Franz" [white, printed and handwritten in blue], " Typus " [red, handwritten in blue] (SAM).

Diagnosis. This is the only species in the subgenus Scydmaenillunia and can be identified on the basis of the generic and subgeneric diagnosis.

Redescription. Body of female (Figs. 98, 104) distinctly flattened, elongate but relatively stout, with long appendages, BL 1.38 mm; glossy, uniformly dark reddish-brown with slightly lighter appendages; vestiture light brown.

Head (Fig. 98) approximately subtriangular, broadest at eyes, HL 0.23 mm, HW 0.28 mm; tempora distinctly shorter than eyes; vertex distinctly transverse and weakly, evenly convex, anteriorly confluent with slightly flattened frons; supraantennal tubercles barely marked; eyes large and strongly convex, nearly circular. Punctures on head dorsum superficial but dense, so that surface of vertex and frons appears uneven; setae short, sparse, suberect. Antennae (Fig. 98) relatively short, with distinct symmetical and slender club comnposed of antennomeres IX–XI, AnL 0.55 mm; antennomeres I–VII elongate, VIII about as long as broad, IX–X slightly transverse, XI 1.4 × as long as broad.

Pronotum (Fig. 98) in dorsal view with large and approximately subtrapezoidal discal part broadest near anterior third of PL and very short posterior part not demarcated by lateral constriction, PL 0.33 mm, PW 0.31 mm; anterior and lateral margins of discal part confluent and rounded; posterior margin only slightly arcuate; hind pronotal corners indistinctly marked, blunt and obtuse; posterior part of pronotum dorsally distinctly demarcated by sharply marked, narrow and nearly straight transverse groove laterally not reaching a pair of deep and distinct lateral longitudinal grooves extending along posterior third of lateral pronotal margins; lateral marginal carinae well-visible in posterior third of pronotum. Punctures on entire pronotum very fine and inconspicuous; setae moderately long, sparse and suberect to erect.

Elytra (Fig. 98) oval and only slightly more convex than pronotum, broadest between middle and anterior third, EL 0.83 mm, EW 0.58 mm, EI 1.43; humeral calli moderately distinct, developed as elongate protuberances; elytral apices separately rounded. Punctures on elytral disc more distinct than those on pronotum but shallow, sparse and unremarkable; setae long, sparse and suberect. Hind wings well-developed, twice as long as elytra.

Legs (Fig. 98) long and slender; all tibiae straight or nearly straight, metatibiae without setal brushes.

Male. Unknown.

Distribution. South Australia: southern part of South Australia.