A New Genus Pseudopelthydrus gen. n. from Hainan Island, China (Coleoptera: Hydrophilidae: Hydrophilinae)

中國海南島產之牙蟲(牙甲)－新屬－偽東方牙蟲(牙甲)屬(鞘翅目：牙蟲(牙甲)科)

賈鳳龍(Feng-Long Jia)

《中華昆蟲》 18卷4期 (1998/12) Pp. ii+225-230

https://doi.org/10.6660/TESFE.1998021

摘要

Pseudopelthydrus gen. n. and P. longipalpus sp. n. from Hainan Island of China are described. The new genus belongs to the subfamily Hydrophilinae (tribe Laccobiini). It is closely related to Pelthydrus d'Orchymont but can be separable by the head, pronotum and elytra with more distinct systematic punctures; prosternum without fine carina; mesofemora with hydropubescence except the extreme portion; epipleuron almost as wide as pseudepipleuron anteriorly, the former reaching Ist abdominal sternite, the latter thinning posteriorly and almost reaching apex.

關鍵字

Coleoptera ； Hydrophilidae ； Laccobiini ； Pseudopelthydrus gen. n. ； China

並列摘要

本文記述海南島產牙蟲（牙甲）科，牙蟲（牙甲）亞科，長節牙蟲（牙甲）族－新屬－偽東方牙蟲（牙甲）Pseudopelthydrus gen. n. 及－新種－長須偽東方牙蟲（牙甲）P. longipalpus sp. n.。新屬與東方牙蟲（牙甲）屬Pelthydrus相似，但新屬頭、前胸背板及鞘翅具有明顯的系統刻點（systematic punctures）；前胸腹板無細隆脊；中足腿節被絨毛，僅端部光滑；鞘翅緣折于前部與偽緣折幾乎等寬，緣折後端到達第一腹節，偽緣折後端變細，幾乎到達鞘翅端部可區別。

並列關鍵字

牙蟲（牙甲）科 ； 長節牙蟲（牙甲族 ； 偽東方牙蟲（牙甲）屬 ； 新屬 ； 中國