Tasmosalpingus magnus, Liu & Porch & Ślipiński, 2023

Liu, Zhenhua, Porch, Nicholas & Ślipiński, Adam, 2023, Review of the Australian endemic genus Tasmosalpingus Lea, 1919 (Coleoptera, Cucujoidea, Tasmosalpingidae), Zootaxa 5301 (2), pp. 292-300 : 297-298

Tasmosalpingus magnus sp. nov.

( Figs 3–4 )

Type material. Holotype: Australia: Victoria: VIC: Dandenong Ranges NP , Kalorama Park , 400m ESE Kalorama Lookout , 37.81873°S 145.37061°E 400m, Berlesate NP22-04, N. Porch, 4.i.2022 / Treefern litter around spring emergence in wet scler. forest (male, ANIC) . Paratypes: Australia: New South Wales: NSW Acacia Plat. J. Armstrong (1, ANIC) ; 31.57S 151.25E Polblue Swamp Barrington Tops S. F. NSW 17 Nov. 1981 T. Weir / pyrethrin-fogging Eucalyptus bark (1 female; ANIC) ; Victoria: VIC: Mt. Buffalo National Park, 0.37km N. of Cathedral Rock , 36.7517°S 146.787°E 1520m, N. Porch & H. Benjemaa, 31.ii.2011 - 30.iii.2011 /Benjemaa Hons. 2012, Alpine Wet Malaise, Wet subalpine forest (1, MV) ; E Doncaster , V 23.10.90, LJ Cookson (1, MV) ; Tidal River , V. 19.1.93, LJ Cookson (1, MV) .

Additional material: Australia: Victoria: Bimbi Park caravan park, 2.35km WNW Cape Otway, 38.83424°S 143.51321°E 125m, N. Porch, 15 Nov. 2015 / at light in dry sclerophyl forest (1, N. Porch collection) .

Etymology. The species name derived from Latin word “ magnum ”, meaning large, referring to the relatively large body size of this species.

Diagnosis. See diagnosis of T. quadrispilotus .

Description. Length 2.1–2.5 mm. Body broadly elliptical and dorsally convex, uniformly dark brown ( Fig. 3 ), covered with whitish setae.

Male. Head ( Figs 4A, 4B ) sub-quadrate, nearly parallel-sided; posterior edge almost straight, with pair of small and widely separated occipital incisions; dorsal side nearly flattened, with fine and irregular punctation except on vertex; ventral side with short subantennal grooves, gular suture short and widely separated, submentum with tufted short setae. Eyes small and laterally protruding, finely facetted. Antennomeres 9–10 slightly asymmetrical. Frontoclypeal region protruding and transverse, without frontoclypeal suture. Mandibles ( Fig. 4K ) sub-triangular, with 4 apical teeth; mola reduced, bearing 2 tufts of short setae. Maxilla ( Fig. 4I ) with galea slightly broader than lacinia; palpomeres 2–3 stout, apical segment coniform. Mentum transverse, widely emarginated. Labial palpomere 2 stout, the terminal segment narrower and coniform; ligula sub-trapezoid ( Fig. 4J ).

Pronotum ( Figs 4C, 4D ) widest anteriorly, about 0.7–0.8 times as long as wide; lateral edges widened anteriorly and distinctly constricted posteriorly; disc convex, finely and irregularly punctate, covered with depressed whitish setae; posterior angle with pair of setose concavities, laterally opened. Prosternum in front of procoxae longer than length of procoxal cavities; procoxal cavities separated by more than half of their width.

Elytra broadly elliptical, together 1.4–1.5 times as long as wide; dorsal surfaces with indistinct irregular punctation, covered with sparse whitish setae; humeral areas with pair of setose concavities, laterally open ( Fig. 4F ); epipleuron incomplete. Hind wings reduced, not folded. Mesocoxae rounded; mesocoxal cavities widely separated, laterally open to mesepimeron ( Fig. 4G ). Metacoxae transverse and well-separated, laterally extending to metanepisternum. Mesoventrite short, with pair of short and transverse procoxal rests anteriorly; metaventrite nearly flattened, with slender metanepisternum; meso-metaventral junction simple and curved.

Legs with femora enlarged, tibiae flattened and expanded apically; tarsal formula 5-5-4 ( Fig. 4H ); tarsomere 1 longer than tarsomere 2, penultimate tarsomere smallest, terminal tarsomere longest, with pair of simple claws.

Abdomen with first ventrite with broadly rounded intercoxal process, slightly longer then second ventrite; last ventrite sub-triangular. Spiculum gastrale ( Fig. 4M ) Y-shaped, forming a long strut anteriorly. Genitalia ( Fig. 4N ) with parameres narrowly separated at apex; penis nearly parallel-sided posteriorly, apex pointed, with pair of long basal struts; flagellum present and very long, about 1.7 times as long as basal struts.

Female. Similar to male but with hind tarsi 5-segmented. Female genitalia as in Fig. 4L , styli and distal gonocoxites nearly equal in length.

Figures

FIGURE 3. Tasmosalpingus magnus sp. nov. A, holotype, male; B–D, paratype, female; A–B, dorsal view; C, ventral view; D, lateral view. Scale bars = 0.5 mm.

FIGURE 4. Tasmosalpingus magnus sp. nov., paratype:A, head, dorsal view; B, head, ventral view; C, prothorax, ventral view; D, prothorax, lateral view, red arrow pointing to setose cavity; E, antenna; F, elytron, dorsal, red arrow pointing to setose cavity; G, pterothorax, ventral; H, hind tarsus, male; I, maxilla, ventral; J, labium, ventral; K, mandible, dorsal; L, female genitalia; M, male terminalia; N, male genitalia. Scale bars: 0.1 mm for I–K, 0.2 mm for the remaining images.