Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 94. (Budapest 2002)

Ahrens, D.: Notes on distribution and synonymy of sericid beetles of Taiwan, with descriptions of new species (Coleoptera, Scarabaeoidea: Melolonthidae)

Labroclypeus subtrapezoidal, not very large, widest at base, lateral margins slightly curved and strongly convergent to feebly rounded anterior angles, lateral border and ocular canthus produce a distinctly blunt angle, margins weakly reflexed, anteriorly distinctly but not broadly sinuate medi­ally; surface flat and shiny, finely and densely punctate, densely finely hairy; frontoclypeal suture feebly incised and medially weakly angled; smooth area in front of eye approximately 1.5-times as wide as long; ocular canthus moderately long and slender, densely setose. Frons with fine, moder­ately dense punctures, densely hairy. Eyes moderately large, ratio of diameter/ interocular width: 0.54. Antenna yellow, 10-segmented; club with three segments, in male 1.5times as long as remain­ing segments together, in female a little shorter than remaining segments together. Mentum not ele­vated, anteriorly with a v-shaped, nearly glabrous, excavation, anterior surface of labrum deeply sinuate medially. Pronotum narrow, widest at base, lateral margins straight, weakly narrowed to the middle, in anterior half weakly curved and convergent anteriorly, anterior angles strongly produced and sharp, anterior margin without marginal line and weakly produced medially; surface densely and finely punctate, with long, erect, dense and fine pilosity; anterior and lateral border setaceous. Scutellum slender, triangular, with fine and very dense punctures, partly finely hairy. Elytra oblong, distinctly widened posteriorly, striae strongly impressed and finely and densely punctate, intervals distinctly convex, with fine and sparsely scattered punctures, mostly concentrated along striae, punctures with numerous fine, short and long, erect hairs; epipleural edge fine, ending at strongly curved external apical angle of elytra, epipleura densely setaceous, apical border chitinous, covered with very short microtrichomes. Ventral surface dull , finely and not densely punctate, sparsely hairy, metacoxal plates laterally with a few long setae; each abdominal sternite with a transversal row of coarse punctures bearing short hairs between fine and dense punctation, penultimate sternite apically with a shiny smooth chitinous border, which is more than half as long as sternite. Mesosternum between mesocoxae as wide as mesofemur. Ratio of length of metepisternum/ metacoxa: 1/1.63. Pygidium moderately con­vex, finely and densely punctate, without smooth midline, with numerous fine and long hairs. Legs moderately slender; femora with two longitudinal rows of hairs, finely and densely punctate; metafemur dull, anteriorly sharply edged, behind anterior edge without serrated line, poste­rior margin medially bluntly widened, in apical half dorsally finely serrated, ventrally completely serrated, in basal half with a few long hairs. Metatibia slender and moderately long, widest at apex, ratio width/ length: 1/3.95, dorsally moderately edged, with two groups of spines, basal one slightly before middle, apical one at three-fourths of metatibial length, basally with three single hairs with punctures having a serrated margin; outside longitudinally convex, with moderately dense, fine punctures and glabrous; ventral edge with three strong spines equidistant from each other, inside sparsely and finely punctate, apex interiorly near tarsal articulation shallowly concavely truncate. Tarsal segments distinctly and densely punctate dorsally, ventrally with sparse, short setae; metatar­sal segments ventrally with a strongly serrated ridge, beside which is a moderate longitudinal edge, segments one to four ventrally glabrous, first metatarsomere distinctly shorter than the two following segments combined and about one fourth longer than the upper tibial spur. Protibia moderately long, bidentate, all claws symmetrical, feebly curved and long, with basal tooth in apical half, normally de­veloped. Aedeagus: Figs 17-19. Notes - The new species distinctly differs from the very similar T. yui KOBA­YASHI and T. rufofusca KOBAYASHI et NOMURA by shape of the parameres. Fur­thermore, the metatibia is slightly shorter and wider than that of T. yui.

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