A new species of Thysanarthria Orchymont from China,with the first record T.bifida(Coleoptera:Hydrophilidae)in Vietnam  

中国刻纹牙甲属Thysanarthria一新种及越南新记录T.bifida(鞘翅目:牙甲科)

作　　者：Fenglong JIA Shujiao JIANG Zhenming YANG 贾凤龙;蒋淑娇;杨圳铭(中山大学生命科学学院昆虫学研究所,广东广州510275)

机构地区：[1]Institute of Entomology,Life Science School,Sun Yat-sen University,Guangzhou,Guangdong 510275,China

出　　处：《Entomotaxonomia》2020年第3期227-230,共4页昆虫分类学报（英文）

基　　金：GDAS Special Project of Science and Technology Development(2020GDSYL-20200102021,2020GDASYL-20200301003).

摘　　要：A new species,Thysanarthria rara sp.nov.,is described from China(Hunan,Guangdong).A photo of male genitalia of the new species is provided.This is the third known species in this genus from China.A key to all species known from China is given.T.bifida Fikáček,2019 is recorded for the first time from Vietnam(Tonkin,Hoa-Binh).记述采自中国湖南和广东的牙甲科1新种——罕刻纹牙甲Thysanarthria rara sp.nov.,提供了中国该属已知种的检索表。本新种与中国台湾省的楚氏刻纹牙甲T.chui Fikáček&Liu,2019相近,可以通过以下特征相区别:鞘翅颜色较浅;头和前胸背板具明显皮革状纹;雄性外生殖器基叶在侧叶基部明显加宽,侧叶基部外缘不强烈向外扩展,中部1/3适度向外扩展(楚氏刻纹牙甲T.chui雄性外生殖器见Fikáček&Liu,2019:figs 8A–E);新种与分布在云南的查氏刻纹牙甲T.championi(Knisch,1924)也可通过雄性外生殖器特征相区别(查氏刻纹牙甲T.championi雄性外生殖器基叶不明显宽于侧叶基部,侧叶外缘几乎均匀弧形,端部1/4略波曲Fikáček&Liu,2019:figs 7A–E)。文章还首次记录了越南(Tonkin,Hoa-Binh)的凹刻纹牙甲T.bifida Fikáček&Liu,2019。

关 键 词：Chaetarthriinae TAXONOMY Oriental Region key 

分 类 号：Q969.48[生物学—昆虫学]