Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 76. (Budapest 1984)

Kirejtshuk, A. G.: New taxa of Nitidulidae (Coleoptera) from the Indo-Malayan fauna

KEY TO THE INDO-MAL A YAN SPECIES OF TRIMENUS MURRAY, 1864 1 Pronotum almost parallel-sided in basal half 2 — Pronotum narrowing towards hind corners 3 2 Lighter: yellowish or light brown; more coarsely punctured. 4.3-5.6 mm. — Japan, Indo-Malayan Region, Australia T. parallelopepidus (MOTSCHULSKY, 1863)* — Darker: dark brown; more finely puntured. 5.0 mm. — Sumatra T. dubius GROUVELLE, 1897* 3 Elytra distinctly punctured, nearly as head and pronotum; pronotal sides explanate; apex of prosternai process rounded off, about as wide as antennái club; dark reddish brown, ventral surface and pygidium light brownish. 5.2 mm. 9 : elytral apices truncate. Figs. 36-38. — N. E. India T. confusus sp. n. — Elytra indistinctly punctured, almost rasp-like; pronotal sides subexplanate; prosternai process rather bluntly pointed at apex, about 1.25 times as wide as antennái club; dark reddish brown; ventral surface and pygidium not lighter than dorsum. 4.7-5.3 mm. $ : elytral apices strongly acuminate. Figs. 30-35. —- N. Vietnam T. accomodus sp. n. Epuraea sjoebergi sp. n. (Figs. 39—47) Material. 19 çf, $ : holotype çf and paratypes çf, 9 : "Java, Sindanglash, Xantus leg.", 1 çf, paratype: "Java, Palaboen, XANTUS"; 1 çf: "Java, Megamendong, XANTUS"; holotype and most of the paratypes in (TM) the further paratypes in (ZIN), all the studied specimens have an additional label: "Epuraea dentipes, O. Sjöberg det", but indeed this species has not yet been formally described. Male, holotype. Length 3.2, breadth 1.6, height 0.7 mm. Elongate oval; weakly convex: yellowish, pronotal disk slightly darker; elytra, except wide scutellar areas and narrow strip along their lateral and apical margin, dark reddish brown, almost black; shiny; with moderately dense, not long, rather contrast golden pubescence. — Head somewhat shorter than distance between eyes, feebly convex, but between antennái insertions hardly concave. Surface without evident puncturation, almost sparsely and finely granulate. Antennae nearly as long as head wide, with 4th and 5th segments subequal. — Pronotum with sides gently subexplanate, basis not bordered and its hind corners distinctly blunt. Surface about as on head but granules somewhat more distinct. •— Elytra with sides narrowly subexplanate, shoulders weakly raised, subsutural lines not expressed. Surface as on pronotum. — Pygidium with apex widely abrupt, its surface with granulation coarser than that on pronotum and elytra. — Ventral surface more finely pubescent than dorsal one, less shiny ; granulation and reticulation as on pronotum and scutellum, but on middle of metasternum with almost distinct punctures twice smaller than eye facets, separated by distance equal to a puncture diameter. Last labial palpus segment securiform, 1.5 times as wide as long, prosternai process roof-like at apex. Distance between intermediate coxae nearly 1.5 times, but distance between hind ones 3.0 times as large as that between fore. Metasternum hardly concave, with hind margin between hind coxae widely shallowly angulately excised. Apex of last abdominal sternite widely rounded of and shallowly emarginate at sides. — Fore tibia with shape in part similar to intermediate one, but projection on its inner edge considerably less exposed. Fore tibia about as wide as prosternai club, intermediate somewhat narrower. Fore and intermediate femora twice as large as fore tibia, their edges gradually rounded off. Hind femur 2.5 times as wide as fore tibia with medial projection pointed. Fore tarsus 4/5 as wide as fore tibia, intermediate and hind 3 times narrower; their claws slightly toothed at basis. — Genitalia: Aedeagus moderately sclerotised. Female. Differs from male in its pygidial apex and in having one of its last abdominal sternites rounded off. All tibiae and femora simple, fore tibia 3/4, intermediate one 2/3 and hind 1/2 * The author has studied a type of Trimenus parallelopipedus (a specimen with MOTSCHULSKY'S labels : "Epuraea parallelopepida Mötsch.,Ind. or., Ceyl., H.T." and "typus" ZU) which must undoubtedly be regarded as a senior synonym •of T. adpressus, 1864, syn. n. As to T. dubius no specimen of this species is known to the author.