Trypogeus barclayi Vives, 2007

Vives, Eduard, 2015, Revision of the genus Trypogeus Lacordaire, 1869 (Cerambycidae, Dorcasominae), ZooKeys 502, pp. 39-60 : 46-47

Trypogeus barclayi Vives, 2007 Fig. 17

Trypogeus barclayi Vives, 2007: 54.

Trypogeus barclayi : Miroshnikov 2014: 59.

Material studied.

1 male holotype from Brunei, II-III.1992, (E 115, 7° - N 4, 34°) Kuala Belalong FSC, N. Mawdsley leg. (BMNH); 1 male Paratype, idem, (EVC); 1 female from Malaysia SW, Sabah, Long Pa Sia, Payakalaba, 1010 m, 13-13.IV.1987, C.V. Achterberg leg. (EVC); 1 male from Malaysia SW, Sabah, Borneo, Headquarters, 5.V.1980, A. Sakai leg. (NOC); 3 males from Indonesia, Kalimantan, Timur, Bikit Bangkiria, 14-20.IX.1999, 8-14.XI.2000, 11-17.X.2000, H. Makihara leg. (NOC); 1 male from Indonesia, east Kalimantan, Bukit Soeharto, 11-18.X.1996, H. Makihara & H. Kinumura leg. (NOC); 1 male from Malaysia SW, Sabah, Trus Madi, V.2000 (NOC).

Redescription.

Size of the male 9-11 mm long and 3.9-3.2 mm wide. Body completely testaceous except for the external margin of mandibles, the lateral margin and apex of elytra, the first seven antennal segments and the tibiae, which are almost black. The occiput and thoracic disc have a large brown-black spot. The underside of the body is brown except for the abdominal sternites which are almost black. Broad short head, prominent eyes with medium facets. The lower lobe is almost double the length of the upper lobe. The mandibles are broad, arched and protruding; the inner margin is smooth, lacking a medial tooth. The antennae are long and robust, extending past elytral apex from the third antennomere, the last four antennomeres are yellowish. Pronotum subquadrate, slightly longer than wide with four discal protuberances, one at each side of the pronotal middle. A large brown spot extends longitudinally from the front to the rear border, narrowing at apical third. The entire pronotal surface is coarsely punctate, almost rugged. The hind margin is doubly sinuate. Yellowish prosternum with the front and rear parts brown. Prosternal process long and narrow, the coxal cavities opened behind and procoxae extended at an angle to the sides. Dark brown triangular scutellum with a central depression. The central plate of the mesonotum lacking a stridulatory area. Subconical elytra, wider than pronotum with humeri very obtuse, rounded and projecting upwards. Bordered protruding suture. Apex of elytra rounded and dehiscent. The elytra are narrowed after the middle, widening slightly at apical fifth. Elytral punctation is coarse and granulose, decreasing after apical third. The entire elytral surface is clothed in golden tomentum that becomes brown at sides and brown-black at apex. Legs short and robust, tibiae widened at apex. Clothed in golden tomentum except for tibiae that are covered in dense blackish pubescence. Tarsi not widened and with the first segment of mesotarsi and metatarsi longer than the second and third together. The lower part of the body is finely punctate and clothed in golden tomentum. Copulatory organ of male elongate (Fig. 13) slightly arched with a strongly acuminate apex and the upper lamina narrower and thinner than the lower, not reaching the apex. Lateral parameres long and slender, bearing long setae at apex and some short setae on the inner side.

This species is the smallest in the genus, it can be distinguished from the others by the almost black spots on head and pronotum and the tibiae with black pubescence. The most similar species is Trypogeus javanicus Aurivillius, from which it can be separated by the characters mentioned, by the different colouration of elytra and the morphology of the pronotum.

Distribution.

Borneo, including Sabah, Brunei, and Kalimantan.