Hernando Carles, Ribera Ignacio
P.O. box 118, 08911 Badalona, Catalonia, Spain..
Zootaxa. 2017 Mar 2;4238(2):zootaxa.4238.2.10. doi: 10.11646/zootaxa.4238.2.10.
The knowledge of the Hydraenidae of sub-Saharan Africa, and in particular of the genus Hydraena Kugelann, 1794, is most incomplete. As an example, in southern Africa only three species were described before the revision of Perkins (2014), which raised the number to 31. Only 15 species are currently known from Central Africa, between the Sahel and South Africa, all belonging to subgenus Hydraenopsis Janssens, 1972 (Trizzino et al. 2013), but many more remain to be described and discovered. The islands of the Gulf of Guinea are no exception to this lack of knowledge (Jones 1994), and only one species of the family was previously known, H. (Hydraenopsis) pagaluensis Hernando & Ribera, 2001 from Annobón (Hernando & Ribera 2001; Trizzino et al. 2013). In this paper we describe the first known species of Hydraenidae from Bioko, the largest and closest to the continent of these islands. The species were collected by our friend and colleague Vasily Grebennikov during a survey of the forest litter fauna of Annobón and Bioko. Despite considerable efforts no Hydraenidae were found in Annobón, and only these two species, in a single locality, in Bioko.
对撒哈拉以南非洲的沼梭甲科昆虫，尤其是对1794年的沼梭甲属（Hydraena Kugelann）的了解极其不完整。例如，在南非，珀金斯（2014年）修订之前仅描述了3个物种，修订后该数字增至31个。目前已知在萨赫勒地区和南非之间的中非只有15个物种，它们都属于1972年的沼梭甲亚属（Hydraenopsis Janssens）（特里齐诺等人，2013年），但仍有更多物种有待描述和发现。几内亚湾的岛屿也不例外，此前对该科昆虫了解甚少（琼斯，1994年），该科此前仅知一种，即2001年在安诺本发现的安诺本沼梭甲（H. (Hydraenopsis) pagaluensis Hernando & Ribera）（埃尔南多和里韦拉，2001年；特里齐诺等人，2013年）。在本文中，我们描述了比奥科岛（这些岛屿中最大且离大陆最近的岛屿）已知的第一种沼梭甲科昆虫。这些物种是我们的朋友兼同事瓦西里·格列边尼科夫在对安诺本岛和比奥科岛的森林凋落物动物群进行调查时采集到的。尽管付出了巨大努力，但在安诺本岛未发现沼梭甲科昆虫，仅在比奥科岛的一个地点发现了这两个物种。
