Trypogeus tonkinensis Miroshnikov, 2018

A. I., Miroshnikov, 2018, The longicorn beetle genus Trypogeus Lacordaire, 1869 (Coleoptera: Cerambycidae) in Vietnam, with descriptions of three new species, Caucasian Entomological Bulletin (Caucas. entomol. bull.) 14 (1), pp. 33-35 : 34-37

Trypogeus tonkinensis Miroshnikov , sp. n.

(Color plate 2: 11)

Trypogeus superbus : Vives, 2015: 58 (partim, Vietnam: “W Tonkin, region of Hoa Binh ”) (non Trypogeus superbus var. innotatus [ Pic, 1922: 16]).

Material. Holotypus, ♀ ( MNHN): “ Tonkin occ. Rég. de Hoa Binh, R.P.A.de Cooman,1918”,“Muséum Paris 1952 coll. R. Oberthur ”, “ Trypogeus superbus (Pic) , ♀, E. Vives det. 2011” .

Diagnosis. Based on female characters, this new species seems to especially strongly resemble T. javanicus Aurivillius, 1925 , but differs by many antennomeres being more strongly elongated, the generally longer antennae, the elytra being clearly less contrasting darkened on the sides and apically. From the geographically closest T. albicornis Lacordaire, 1869 , which is also similar in some important features like the above species, T. tonkinensis sp. n. differs at least by the elytra being less strongly diverging along the suture in the apical part and less strongly darkened apically, the partly darkened tarsi, and the more strongly elongated protarsomeres.

The new species differs from T. superbus , as well as from other similar species, by the shiny elytra, the distinctly peculiar light setation (formed by more or less dense, very short, suberect or partly erect setae), the obtusely angulate, apically nearly obtuse (but not too sharpened) lateral tubercles of the pronotum (on the contrary, it is by these features that T. tonkinensis sp. n. clearly resembles T. javanicus , T. albicornis and some other congeners).

Description. Female. Body length 13 mm (without ovipositor), humeral width 3.7 mm. Coloration of integument mainly combines red yellow and yellow tones; each elytron along lateral margin and at apex, mandibles and tarsi partly, tibiae apically obscured; eyes black; antennomere 3, except for base, and antennomeres 4–8 (see Remarks) dark brown; elytra with a clear shine.

Head slightly narrower than pronotum at level of lateral tubercles; with moderately developed antennal tubercles; with a heterogeneous, scabrous, confluent puncturation dorsally, most coarse in area of antennal tubercles; with a well-expressed median groove between bases of antennae and eyes; mandibles long, strongly curved; right mandible, like in all congeners, with a large tooth at inner margin; eyes deeply emarginate, slightly convex, with not too large, but distinct ocelli; genae short; gula with clear transverse wrinkles; on either side of it with same sculpture; length ratio of antennomeres 1–8, 24: 7: 27: 28: 28: 27: 26: 24 (antennomeres 9–11 missing); antennomere 2 subequal in length and width.

Pronotum at level of lateral tubercles 1.11 times as wide as long; at base barely wider than at apex; lateral tubercles moderately developed, not too sharpened apically, as in Color plate 2: 11; disc with weakly developed tubercles, three at base and further two in the middle; with a heterogeneous, small partly, very dense and confluent puncturation.

Scutellum triangular, rounded apically, with a very small, mainly unclear puncturation.

Elytra 2.12 times as long as humeral width, relatively strongly narrowed towards apex, in apical third partly about parallel-sided, noticeably diverging along suture at apex; each elytron rounded at apex; with a very clear, more or less uniform punctures from base to almost until apex of elytra.

Prosternal process very narrow between coxae; mesosternal process rather broad; metasternum with a small dense puncturation and clear median groove; metepisterna very wide, moderately narrowed towards apex; sternites with a small, dense, partly unclear puncturation; last (visible) sternite widely rounded apically; last (visible) tergite at apex truncate.

Legs moderately long; femora thickened but not claviform.

Due partly to character of elytral setation (see Diagnosis), elytra look shiny.

Etymology. The name of this new species is related to the historical and geographical region Tonkin (now northern Vietnam) which it inhabits.

Remarks. The antennae and legs of the holotype are badly damaged (Color plate 2: 11).

Distribution. Northern Vietnam.