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> Том/Vol. VII №1 (2015)Новая триба хрущей из Вьетнама (Coleoptera, Scarabaeidae, Melolonthinae)New tribe of chafers from Vietnam (Coleoptera, Scarabaeidae, Melolonthinae)Резюме. Описан новый род Langbianella g. n. с двумя видами, L. auricomes и L. pterolepis spp. n., найденными в восточной предгорной части Далатского плато на высоте 750-800 м. Вместе с монотипическим родом Pseudoisonychus Frey, 1971 он выделен в отдельную трибу Langbianellini trib. n., характеризующуюся наличием лаброклипеуса, сближенными шпорами задней голени, сильно увеличенным пропигидием, слитым с 5-м стернитом, и редуцированным пигидием, и другими признаками. Summary. A new genus and two new species of Melolonthinae are described from Dalat Highlands of Vietnam at altitude 750-800 m. Together with the monotypic genus Pseudoisonychus Frey, 1971 it is separated in the new tribe Langbianellini. Diagnoses of the new taxa: Langbianellini trib. n.: Labrum horizontal, on the same plane with clypeus to forming labroclypeus; maxillae with a long pubescence reminiscent a “sucking brush” of Valgines; antennae 8- or 10-articulated, with small 3-jointed club; anterior margin of pronotum with membranous border; propygidium strongly enlarged and inадated, fused with 5th sternite; pygidium reduced; metacoxae narrow, legs gracile; metatibial spurs closely spaced, attached below metatarsus; claws symmetrical. Langbianella g. n.: Antennae 8-joined, 3rd joint of club somewhat reduced in size, with a slit-like stripe of microsensillae; anterior margin of labrum concave; pronotum broadest at base; elytrae with 10 striae, all reaching to apex; body with a specialized setosity; all claws splitting. L. auricomes sp. n.: simple punctures between the setigerous punctures of pronotum very pne and sparse, umbilicate punctures lacking setae present at the lateral thirds of the pronotal base only; punctate rows of elytra with simple hairs; basal two-thirds and apical part of the 1st elytral interspace with patches of very long bright erect hairs in several rows; elytrae, pygidium and propygidium without microsculpture; pygidium uniformly covered with setigerous punctures; scutellum with sparse and irregular small punctures; middle third of 5th abdominal sternite uniformly covered with umbilicate setigerous punctures; abdomen reddishbrown. L. pterolepis sp. n.: simple punctures between the setigerous punctures of pronotum dense and rough, umbilicate punctures lacking setae present at the posterior part of the pronotal disc and along the pronotal base... Ключевые слова: Melolonthinae, новая триба, новые виды и род, Вьетнам Keywords: Melolonthinae, new tribe, new genus and species |