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脊阎甲属Onthophilus Leach, 1817隶属于鞘翅目Coleoptera阎甲总科Histeroidea阎甲科Histeridae脊阎甲亚科Onthophilinae,全球共记录近40种[1–2]。
中国此前记录8种,分别为斯氏脊阎甲O. smetanai Mazur, 1994分布于台湾;席氏脊阎甲O. silvae Lewis, 1884分布于北京;丽江脊阎甲O. lijiangensis Zhou & Luo, 2001分布于云南;黄角脊阎甲O. flavicornis Lewis, 1884分布于四川、云南、台湾;原脊阎甲O. ordinarius Lewis, 1879分布于东北;粗脊阎甲O. ostreatus Lewis, 1879分布于福建、台湾、香港;细脊阎甲O. foveipennis Lewis, 1885分布于北京、黑龙江、甘肃;黑龙江脊阎甲O. heilongjiangensis Li, 1993分布于黑龙江[3]。本次新记录种日本脊阎甲Onthophilus niponensis Lewis, 1907原记录于日本,首次发现于河南。
脊阎甲体卵圆形,黑色。头部具一到三条脊,具粗糙刻点。前胸背板具刻点,表面具2到8条脊。小盾片很小,呈三角形。鞘翅表面有8条刻点线,刻点线之间通常具脊。腹面具大量刻点。前足胫节细长且外缘具齿列。跗节5-5-5式。阳茎较细长,基片很短,侧叶端部通常向下弯曲。
本种可通过以下特征与本属其它种区分:前胸背板具3对脊,由外向内第1脊不明显,第3脊较短起始于前胸背板中间处;前臀板及臀板的隆突不明显;前足胫节外缘具6根刺。
A New Record Species of the Genus Onthophilus Leach, 1817 (Coleoptera: Histeridae) from China
doi: 10.12172/202112160003
- Received Date: 2021-12-16
- Available Online: 2022-07-06
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Key words:
Coleoptera / - Histeridae /
- Onthophilus /
- New record /
- China
Abstract: By sorting out and identifying some Histerid beetles specimens collected in Henan province, Onthophilus niponensis Lewis, 1907, a new record species was found in China for the first time. Its characteristics were described and detailed pictures were provided, and the specimens were deposited in the Institute of Entomology, Guizhou University.