Uracanthus quadristriolatus, 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: 33-34

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Uracanthus quadristriolatus

sp. nov.

Uracanthus quadristriolatus   , sp. nov.

(Figs 32, 70, 100)


Male. Body length, 30.00 mm; width, 5.49 mm.

Colour (Fig. 32). Body dark reddish brown, with head, thorax and basal elytra darker. Head with dense, long, pale orange pubescence; vertex with a large and long longitudinal triangular hairless mark. Pronotum with 2 wide, clearly defined stripes of very dense pale orange pubescence on each side: 1 on disc and 1 near ventral side; the remaining pronotum hairless. Each elytron with 3 small basal glabrous marks: 1 on shoulder, largest, 1 between shoulder and suture, smallest and narrowest, and 1 at suture, rest of elytra covered with uniformly dense short pale yellow pubescence.

Head. Postclypeus triangular and convex, finely punctate, and sparsely pubescence; frontoclypeal suture wide and deep in middle; distance between lower lobes of eyes 1.75 × as long as distance between upper lobe of eyes; distance between upper lobes of eyes 1.0 × as long as distance between eyes on ventral side; genal length 0.53 × as long as head width immediately below eyes. Antennae shorter than body, covered with uniform short pubescence; antennal segment 3 cylindrical, segments 4 to 10 flattened, slightly produced on one side at apex.

Thorax and abdomen. Pronotum 1.42 × as long as width, with a small rounded process at each side; posterior margin wider than anterior margin; disc binodulose near middle area; disc and sides heavily rugose transversely throughout. Scutellum semicircular, with sparse pubescence. Elytra 4.27 × as long as prothorax and 3.94 × as long as shoulder; basal elytra sparsely punctate; apex bispinose with spine at suture shorter than that at margin. Abdomen with dense short pubescence, apex of terminal sternite truncate with a shallow notch.

Male terminalia. Apex of ventral median lobe pointed; dorsal median lobe rounded, ventral lobe longer than dorsal lobe. Spined region of internal sac more than 4 × as long as basal unspined regions; spined region divided into two sections: first section with mixture of dense large and long simple spines, fairly dense multibranched spines and dense scale-like processes; second section with dense long simple spines, becoming sparser towards the end of this section ( Fig. 70a). Eighth sternite obliquely truncate at sides, apex widely emarginate with fairly dense setae; ventral surface with sparse cloud-like processes ( Fig. 70b). Eighth tergite almost truncate at sides, slightly emarginate at apex with long and short setae, with dense simple spines and multi-brancheds spine in mid and basal area ( Fig. 70c). Paramere 2.2 × as long as wide, cylindrical in shape, apex rounded with long dense setae ( Fig. 70d).

Female. Body length, 23.98–27.09 mm; width, 4.34–4.69 mm.

Similar to males but antennae and legs distinctly shorter; body broader with robust abdomen; elytra slightly longer and wider, 3.97–4.19 × as long as shoulder width and 4.02–4.28 × as long as prothorax.

Ovipositor and spermatheca. Ovipositor relatively long; styli arising terminally with short hairs ( Fig. 70e). Spermatheca curved; spermathecal gland arising at base ( Fig. 70f).

Distribution Northeastern New South Wales and northern Queensland ( Fig. 100).

Biology Hosts are unknown. Specimens were collected November.


This species resembles to U. fuscocinereus   but differs in having the elytra covered with a uniform dense pale yellowish pubescence; middle area of pronotal disc without hair; the base of each elytron with only 3 glabrous marks.

Material examined

Holotype. ♂. NSW: Dorrigo Natural Park, xi.1971, MV light, R. Hardie; bearing a red holotype label ( ANIC).  

Paratypes. 2 ♀. NSW: 1 ♀, Armidale, C. F. Deuquet ( AM). QLD   : 1 ♀, Black Mt. , 2m N Kuranoa, N QLD, 4.xi.1976, at light, J. G. Brooks ( ANIC)   .


Australian National Insect Collection


Australian Museum