Uracanthus lateroalbus Lea 1916

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 : 70-71

Uracanthus lateroalbus Lea 1916

(Figs 54, 92, 113)

U. lateroalbus Lea, 1916: 378 .— McKeown, 1947: 65.

U. fuscostriatus McKeown, 1948: 55 . syn. nov.

Description

Male. Body length, 26.63–28.93 mm; width, 5.25–5.73 mm.

Colour (Fig. 54). Body reddish brown with head, thorax, legs and basal elytra darker. Head with fairly dense pale yellow and white pubescence. Pronotum with mixture of fairly dense whitish and yellowish pubescence; each side with a longitudinal stripe of very dense white pubescence near ventral side. Elytra covered with dense yellowish pubescence on disc; pubescence near suture and margin (basal elytra in particular) almost white; each elytron with a narrow glabrous longitudinal stripe starting from shoulder and extending to about basal 1/3 of elytra. Colour varies from reddish brown to blackish.

Head. Postclypeus triangular, convex, coarsely punctuate; frontoclypeal suture deep and wide in middle; distance between lower lobes of eyes 2.08–2.3 × as long as distance between upper lobes of eyes; distance between upper lobes of eyes 1.0–1.04 × as long as distance between eyes on ventral side; genal length 0.32– 0.39 ×as long as head width immediately below eyes. Antennae slightly shorter than body; segments 4–10 flattened and produced on one side at apex.

Thorax and abdomen. Pronotum 1.15–1.30 × as long as width, sides rounded with a small rounded process at each side; posterior margin 1.09–1.18 × as wide as anterior margin; pronotal disc weakly binodulose in middle area; disc and sides strongly rugose transversely, particularly near anterior and posterior margins. Scutellum semicircular, with dense pubescence. Elytra 4.15–5.04 × as long as prothorax and 3.60–3.90 ×as long as shoulder width; elytron finely puncture; apex slightly emarginated with a small process at margin and a small spine at suture. The apical spine of the elytron at the suture may vary from very small to relatively long. Apex of terminal sternite truncate with a small notch.

Male terminalia. Apex of ventral median lobe pointed and apex of dorsal lobe rounded; dorsal lobe about as long as ventral lobe; spined region of internal sac almost occupying the entire internal sac, divided into two sections: first section about as long as second section, with very dense long simple spines; second section with fairly dense multi-branched spines at base near first section and sparse simple spines on the remaining part ( Fig. 92a). Eighth sternite rounded or slightly obliquely truncate at sides; emarginate at apex, with long and fairly long setae arising terminally; ventral surface with short simple spines (in mid area) and fairly dense cloud-like processes ( Fig. 92b). Eighth tergite truncate at apex, with fairly dense simple spines and multibranched spines on surface ( Fig. 92c). Paramere 2.3–2.38 × as long as wide, cylindrical in shape; apex rounded with long and short setae ( Fig. 92d).

Female. Body length, 21.39–28.67 mm; width, 4.96–5.51 mm.

Antennae and legs distinctly shorter, body broader. Elytra 3.10–3.64 × as long as shoulder width and 4.31–4.91 × as long as prothorax.

Ovipositor and spermatheca. Ovipositor short; styli arising terminally with short hairs ( Fig. 92e). Spermatheca C-shaped; spermathecal gland arising at base ( Fig. 92f).

Distribution Southwestern Western Australia ( Fig. 113).

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

Comments

This species resembles U. discicollis but differs in having pubescence on the pronotal disc more or less evenly distributed; the pronotal disc strongly rugose transversely, and the glabrous areas on the elytra only occurring laterally between the shoulder and basal 1/3 of the elytra.

Material examined

U. lateroalbus : Holotype. ♂. WA: Swan River (32º03'S, 115º44'E), Coll. no. I. 5695, bearing a name label on which ‘TYPE’ was written in red; 8 segments of left antenna and 1 segment of right antenna missing ( SAM).

U. fuscostriatus : Holotype. ♂. WA: Maylands (31º55'S, 155º28'E), Coll. no. 32-242; bearing a red holotype label; 4 segments of left antenna missing ( WAM).

Other material examined. 4 ♂, 2 ♀. WA: 1 ♀, Swan River , J. Clark ( SAM) ; 1 ♂, Jandakot (south of Perth), 12.ii.1950, F. H. Uther Baker ( WADA) ; 1 ♂, Dumbleyung (33º15'S, 117º14'E), 26.xii.1962 ( WAM) ; 1 ♂, Sorrento (31º49'S, 115º44'E), 6.xii.1972, P. G. & A. J. Kendrick ( WAM) ; 1 ♂, 1 ♀, no locality, WA ( WADA) .