Sinodorcadion punctulatum Gressitt, 1939

Xie, Guang-Lin, Shi, Fu-Ming & Wang, Wen-Kai, 2013, A review of the genus Sinodorcadion Gressitt, 1939 with description of three new species from China (Coleoptera: Cerambycidae: Lamiinae), Zootaxa 3709 (6), pp. 581-590 : 582-583

1. Sinodorcadion punctulatum Gressitt, 1939

( Figs 1–2 , 31 )

Sinodorcadion punctulatum, Gressitt, 1939: 107 ; Breuning, 1950: 203; Gressitt, 1951: 329; Breuning, 1961: 309; Löbl & Smetana, 2010: 289.

Material examined. Holotype, male, China: Zhejiang, Tianmushan, 24 July 1936, leg. Rev. O. Piel. The holotype is deposited in the Institute of Zoology, Chinese Academy of Sciences (IZAS), Beijing, China.

Redescription. Male. Length 8.2 mm, maximum width of elytra 2.7 mm. Body reddish brown to black brown, covered with grayish brown pubescence. Head black brown with maxillary and labial palpus reddish brown, antenna dull reddish brown, pronotum and scutellum black brown, elytron mostly black brown with apex slightly reddish brown, leg reddish brown with femur blackish brown, ventral surface blackish brown. Elytron covered with dense and slightly uneven pubescence forming very vague mottled maculae.

Head densely punctate, frons subquadrate, slightly convex. Lower eye lobe longer than broad, distinctly longer than gena in front view. Antenna approximately 1.3 times as long as body; antennal tubercles prominent, widely separated from each other; scape cylindrical, robust; antennomere 3 longer than antennomere 4, about 1.6 times as long as scape; antennomeres 4–10 successively decreasing in length, antennomere 11 about as long as antennomere 5. Pronotum densely punctate, slightly wider than long; disc convex; lateral tubercle small, short and obtuse. Scutellum short, rounded apically. Elytra long-oval, widest across middle, separately rounded apically; punctures on surface coarser than pronotum and head, gradually becoming finer towards to apices. Sterna coarsely punctate, mesosternal process sparsely punctate. Sternites impunctate except for both sides of basal two segments sparsely punctate; last visible abdominal segment not reaching the apices of elytra. Legs long, metatibia approximately as long as metafemur.

Comments. The species is easily distinguished from S. subspinicolle Breuning by its elytra with vague mottled maculae throughout and sterna with sparse punctures.

Figures

FIGURES 1 – 3. Habitus of Sinodorcadion spp. 1 – 2. S. punctulatum Gressitt, holotype, male. 1. dorsal view. 2. lateral view. 3. S. subspinicolle Breuning, holotype, female, dorsal view.

FIGURES 31 – 35. Pronotum of Sinodorcadion spp. 31. S. punctulatum Gressitt, male. 32. S. punctuscapum sp. nov. male. 33 – 34. S. jiangi sp. nov. 33. male. 34. female. 35. S. magnispinicolle sp. nov. female.