﻿A revision of the genus Trichohoplorana Breuning, 1961 (Arthropoda, Insecta, Coleoptera, Cerambycidae, Lamiinae, Acanthocinini)

﻿Abstract A taxonomic revision of the genus Trichohoplorana Breuning, 1961 is presented. A junior synonym of Trichohoplorana, Ipochiromima Sama & Sudre, 2009, syn. nov., is proposed. A junior synonym of T.dureli Breuning, 1961, I.sikkimensis (Breuning, 1982), syn. nov., is proposed. Trichohoplorana is newly recorded from Vietnam. A new species, T.nigeralbasp. nov. is described from Vietnam. Trichohoploranaluteomaculata Gouverneur, 2016 is newly recorded from China and Vietnam. Hind wings and male terminalia of T.luteomaculata are described for the first time. Trichohoplorana is redescribed, and a key to Trichohoplorana species is presented.

Redescription. Head distinctly narrower than prothorax, frons with a narrow, median furrow extending from base of clypeus up to apical margin of pronotum; eyes coarsely faceted, lower lobes of eyes distinctly far away from each other and longer than genae; antennae slender, distinctly longer than body, scape strongly expanded before apex, pedicle distinctly longer than broad. Pronotum transverse, with a tubercle on each side, punctured, with a pair of subuliform tubercles at sides of middle; prosternal process broad, with a longitudinal depression in middle, procoxal cavities closed posteriorly. Scutellum linguiform. Elytra covered with black or brown spots and a series of black or brown spots along suture; disc elongate, distinctly broader than pronotum at base, gradually narrow from near apical third, punctured, with a pair of tubercles at base and near scutellum, with a pair of bumps behind the tubercles; humeral angles rounded and slightly processed forward. Mesocoxal cavities closed externally to mesepimera. Femora strongly clavate. Diagnosis. Trichohoplorana is very similar to Neacanista Gressitt, 1940 in having the pronotum with a tubercle at each side, with a pair of tubercles at the sides of the middle, the elytra with a pair of tubercles at the base and near the scutellum, with a pair of bumps behind the tubercles, and a strongly clavate femora. However, Trichohoplorana differs from Neacanista in having the antennal scape strongly expanded before the apex (gradually thickened before the apex in Neacanista) and the pedicle distinctly longer than broad (broader than long in Neacanista).

Fig. 1F
Trichohoplorana mutica Holzschuh, 1990: 193 (type locality: "Footpath from Sherpagaon to Ghora Tabela, Langtang Khola, Nawakot, C-Nepal"), fig. 11  Male terminalia. Tergite VIII (Fig. 3A) sparsely covered with short brown setae apically and at sides of apical third, nearly truncated at apex. Sternite VIII (Fig. 3B) anchorshaped, sparsely covered with short brown setae at apical sides, apical margin slightly depressed; spiculum relictum distinctly longer than sternite VIII. Stem of spiculum gastrale more than 2.0 times as long as branches and curved towards dorsum at base (Fig. 3C). Parameres of tegmen sparsely covered with short brown setae on apical third and several long setae near apical fifth; each paramere gradually constricted from base to apex, but external margin slightly expanded near apex; apex of both parameres rounded and closed together; phallobase nearly 3.0 times as long as parameres and processed outward near middle; anterior tegminal strut curved outward (Fig. 3D-F). Penis curved towards venter, ventral plate distinctly longer and broader than dorsal plate and slightly sharp at apex; dorsal plate widely rounded at apex; apex of dorsal struts obliquely truncated (Fig. 3G-J).
Frons (Fig. 6D) densely covered with short yellow and white hairs. Vertex densely covered with short white hairs on middle and short yellow hairs on center (Fig. 6A). Antennae sparsely covered with sub-erect, short, white setae; scape sparsely covered with short, brown setae; pedicel sparsely covered with short, brown setae, with several short, white setae at internal side of apex; antennomere III sparsely covered with short, white setae basally, other parts densely with short, brown setae; antennomeres IV-XI densely covered with short white setae on the basal half and densely with short, brown setae on the apical half; antennomeres III-VII fringed with several long, black setae ventrally; antennomeres VIII-X fringed with one or two long, black setae ventrally; antennae 1.5 times as long as body, length (mm) of each antennomere: scape = 2.7, pedicel= 0.8, III = 3.0, IV= 3.0, V = 2.2, VI = 2.0, VII = 1.7, VIII = 1.6, IX = 1.6, X = 1.5, X I = 1.3; antennomeres III and IV curved inward (Fig. 6A-C). Pronotum (Fig.  6A) covered with three yellow haired bands: two located at sides and starting from near anterior margin to posterior margin, one located in middle and starting from anterior margin to posterior margin; disc with a pair of subtriangular, yellow haired spots located at sides of middle; near anterior of pronotum distinctly expanded outward, pronotum densely punctured (except for apex and base), base of the subuliform tubercles on pronotum expanded forward. Prosternum (sides) and propleuron (venter) sparsely covered with short, yellow hairs (Fig. 6B, C). Scutellum (Fig. 6A) sparsely covered with short black hairs, densely covered with yellow hairs at apex, depressed in middle of apical margin. Elytra (Fig. 6A, B) sparsely covered with short black hairs on the basal half, a short yellow haired band at lateral margins of base, several yellow haired spots arranging into an longitudinal line starting from near posterior humeral angle to basal third, a yellow haired spot located behind the bumps, and several yellow spots along suture from basal fourth to middle; the tubercles at elytral base and near scutellum, and the bumps behind the tubercles densely covered with short, black setae; apical half of each elytron densely covered with short white hairs and four longitudinal yellow haired bands (first band located at lateral margin, second and third bands located in middle and fused at apical half, forth band located near suture); disc 1.9 times as long as wide at base, rounded apically, moderately covered with dense coarse punctures at basal half. Mesosternum, mesepisternum, and mesepimeron sparsely covered with short, yellow hairs; metasternum, metepisternum, and metepimeron densely covered with short, yellow hairs (Fig. 6C). Femora sparsely covered with short white setae and several suberect, long, white setae at external side; tibiae covered with extremely sparse, suberect, long, white setae, sparsely with short, thin, black setae on the basal third, densely with short, white setae in middle, and densely with short, thick, black setae on the apical third; tarsomere I-III (except for venter) densely covered with short white and sparsely suberect, long, white setae dorsally, tarsomere V (except for venter) sparsely covered with short, white setae at basal half and short, black setae on the apical half, with more sparse long black setae at apex (Fig. 6A-C). Abdominal ventrites I-V densely covered with short, yellow hairs, the hairs more dense at apices of ventrites I-IV; apex and sides of ventrite V sparsely covered with long, yellow pubescences (Fig. 6C).
Hind wings (Fig. 6E) with AA 3+4 vein not bifurcate, AA 4 vein missed, AA 3 vein connected with Cu vein near apical 1/3 and not extending to margin; CuA 2 vein connected with MP 3+4 vein near basal 1/3 of MP 3+4 vein and not extending to margin; MP 3+4 vein bifurcate near apical 1/3, some parts of base of MP 3+4 vein missed, a short and vague uncertain vein (? 1 , either a crossvein or base of MP 3+4 vein) connected with base of MP 3+4 vein; MP 4 vein, MP 3 vein and MS vein not extending to margin; a short uncertain vein (? 2 ) located between MP 4 vein and MP 3 vein, not extending to margin. Abdominal ventrite V raised at apical sides and truncated apically (Fig. 6C).
Male. Unknown. Etymology. The specific epithet of this new species is derived from the Latin words "niger" and "albus" referring to most of parts of elytral basal half sparsely covered with short, black hairs and most of parts of elytral apical half densely with short, white hairs.
Diagnosis. This new species can be distinctly distinguished from other species of Trichohoplorana by its peculiar elytral pattern (Fig. 6A).
Remarks. When the senior author received the holotype of this new species, the right antennomere XI was missing and the elytral apex was broken. Then, the head, left antennomere XI, and prothorax were separated from the body due to his carelessness, and he correspondingly glued to the body the separated portions with white emulsoid. Consequently, some hairs on the antennae, elytra, metaventrite, and legs were worn so that some characters are unclear.