Review of Strongylogaster Dahlbom (Hymenoptera: Tenthredinidae) from Zhejiang Province, China, with the description of a new species

ABSTRACT Five species of Strongylogaster Dahlbom, 1835 are recorded from Zhejiang Province, China. They are four known species, S. formosana (Rohwer, 1916), S. macula (Klug, 1817), S. takeuchii Naito, 1980 and S. xanthocera (Stephens, 1835), and a new species. Strongylogaster tianmunica sp. nov., collected from Mt. Tianmu in Zhejiang Province, is here described and illustrated. This new species resembles S. nantouensis Naito, 1990, but differs from the latter by the following characters: female body length 10-12 mm, male body length 8-10 mm; tegula brown to dark brown; pronotum largely yellowish-white; trochanters black, apical half of hind femora and of hind tibiae yellowish-white; malar space as long as radius of median ocellus; antennomere 3 as long as antennomere 4; and ovipositor apical sheath with distinct lateral scapes. A key to the five species of Strongylogaster from Zhejiang Province is provided.

摘要：本文记述中国浙江省分布的锤角叶蜂属（Strongylogaster Dahlbom, 1835）物种共5种，其中4种为已知种：台湾锤角叶蜂（S. formosana (Rohwer, 1916)）、斑锤角叶蜂（S. macula (Klug, 1817)）、武田锤角叶蜂（S. takeuchii Naito, 1980)）以及黄角锤角叶蜂（S. xanthocera (Stephens, 1835)），另有1新种。本文对采自浙江天目山的新种天目锤角叶蜂（Strongylogaster tianmunica sp. nov.）进行了描述并附形态记述与插图。该新种与南投锤角叶蜂（S. nantouensis Naito, 1990)）形态相近，但可通过以下特征与后者区分：雌虫体长10~12 mm，雄虫体长8~10 mm；翅基片呈棕褐色至深褐色；前胸背板大部分为黄白色；转节黑色，后足股节端半部及后足胫节端半部呈黄白色；颊区长与中单眼半径相等；触角第3节与第4节等长；产卵器端鞘具明显的侧突。本文还编制了浙江省锤角叶蜂属5个物种的分种检索表。