Uracanthus bistriolatus, Thongphak & Wang, 2007

Thongphak, Duangrat & Wang, Qiao, 2007, Taxonomic revision of the longicorn beetle genus Uracanthus Hope 1833 (Coleoptera: Cerambycidae: Cerambycinae: Uracanthini) from Australia., Zootaxa 1569 (1569), pp. 1-139 : 71-72

Uracanthus bistriolatus , sp.nov.

(Figs 55, 93, 113)

Description

Male. Body length, 24.82–29.29 mm; width, 4.49–5.36 mm.

Colour (Fig. 55). Body dark reddish brown with head, thorax, and basal elytra darker. Head with fairly dense white pubescence. Antennal segments 3–11 with very short white fringe on one side. Pronotal disc with fairly dense white pubescence divided by a very narrow glabrous median line; each side of pronotum with a longitudinal stripe of very dense white pubescence near ventral side, and a wide glabrous longitudinal stripe between pubescent area on disc and pubescent stripe near ventral side. Elytra covered with more or less evenly distributed dense short white pubescence, with pubescence denser and longer on base and margins; each elytron with a narrow glabrous longitudinal stripe ranging from shoulder to basal 1/4 of elytra. Body colour varies from dark reddish to blackish brown.

Head. Postclypeus triangular, convex, finely punctate; frontoclypeal suture deep and wide in middle; distance between lower lobes of eyes 2.06–2.46 × as long as distance between upper lobes of eyes; distance between upper lobes of eyes 0.78–0.94 × as long as distance between eyes on ventral side; genal length 0.28– 0.36 × as long as head width immediately below eyes. Antennae longer than body; segments 4–10 flattened and produced on one side at apex.

Thorax and abdomen. Pronotum 1.09–1.25 × as long as width, with a small rounded process at each side; posterior margin 1.08–1.35 × as wide as anterior margin; pronotal disc weakly binodulose in middle area; disc and side strongly rugose transversely. Scutellum semicircular, with dense pubescence. Elytra 4.6–4.94 × as long as prothorax and 3.67–3.95 × as long as shoulder width; elytron disc with fine punctures; apex bispinose. The apical spine at the suture may be reduced to a small process. Apex of terminal sternite truncate or slightly emarginate.

Male terminalia. Apex of ventral median lobe with a small notch and apex of dorsal lobe with rounded; dorsal lobe as long as or slightly longer than ventral lobe; spined region occupying almost all internal sac, divided into two sections: first section about as long as second section, with dense long simple spines; second section with sparse short simple spines ( Fig. 93a). Eighth sternite rounded at side, shallowly emarginate at apex, with long and fairly long setae arising terminally; ventral surface with simple spines and cloud-like processes ( Fig. 93b). Eighth tergite truncate, shallowly emarginate at apex, with fairly dense basally-forked spines on surface of basal ½ of tergite ( Fig. 93c). Paramere long, 2.22–2.27 × as long as wide, cylindrical in shape, apex rounded with long and short setae ( Fig. 93d).

Female. Body length, 29.81 mm; width, 5.47 mm.

Antennae as long as or slightly shorter than body; antennal segments without white fringe; elytra 3.89 × as long as shoulder width and 4.71 × as long as prothorax.

Ovipositor and spermatheca. Ovipositor long; styli short, arising terminally with short and long hairs ( Fig. 93e). Spermatheca curved; spermathecal gland arising at base ( Fig. 93f).

Distribution This species is found only in southeastern Queensland ( Fig. 113).

Biology Hosts are unknown. Adults were collected at light in December and February.

Comments

This new species resembles U. lateroalbus but differs in having the pronotum with a glabrous stripe on each side; the glabrous stripe on the lateral elytron shorter; the elytra usually bispinose, and male antennae usually longer than body, with a short white fringe on one side.

Material examined

Holotype. ♂. QLD: Carnarvon Range (25º17'S, 148º44'E), 16.i.1940, N. Geary; bearing a red holotype label ( AM).

Paratypes. 7 ♂, 1 ♀. QLD: 2 ♂, same data as holotype ( AM) ; 1 ♂, same data as above but 11.i.1940 ( AM) ; 3 ♂, 1 ♀, 560m Amphitheare Camp , Expedition Range National Park (25º12'S, 148º59'E), 17.xii.1997, MV light in open forest, Monteith, Cook and Thompson ( QM) ; 1 ♂, same data as above but Evens, Burwell and Ewart ( QM) .