Smith Rachel R, Short Andrew Edward Z
Department of Ecology & Evolutionary Biology, and Division of Entomology, Biodiversity Institute, University of Kansas, Lawrence, KS 66045, USA University of Kansas Lawrence United States of America.
Zookeys. 2020 May 19;934:25-79. doi: 10.3897/zookeys.934.49359. eCollection 2020.
The water scavenger beetle genus Sharp, 1882 is reviewed in northeastern South America using an integrative approach that combines adult morphology and molecular data from the gene cytochrome c oxidase I (COI). Eighteen new species are described: (Brazil, French Guiana, Guyana, Suriname), (Venezuela), (Guyana), (Suriname), (Venezuela), (Venezuela), (Venezuela), (Venezuela), (Venezuela), (Suriname, Guyana), (Brazil), (Suriname), (Venezuela), (Brazil, French Guiana, Suriname), (Suriname), (French Guiana), (Suriname), and (Guyana). We found genetic support for an additional new species in Guyana which is currently only known from females that we refer to as sp. We examined the holotypes of the four species previously known from the region, and found that García syn. nov. and García syn. nov. are conspecific with García, 2000 and are synonymized with that species, which is here redescribed. We redescribe García and expand the range of this species to include northern Brazil, Guyana, and French Guiana. All species are aquatic, with most being associated with forested streams and forest pools. Of the 21 species, more than half (11) are only known from a single locality indicating the genus may have many more micro-endemic species yet to be discovered in the region. Characters of the male genitalia are essential for confirming the identity of some species, consequently it is not always possible to make positive identifications of unassociated female specimens based on morphology alone. Habitus images are provided as well as a revised key to the genus for northeastern South America.
1882年的夏普水栖甲虫属在南美洲东北部通过综合方法进行了综述，该方法结合了成虫形态学和来自细胞色素c氧化酶I（COI）基因的分子数据。描述了18个新物种：（巴西、法属圭亚那、圭亚那、苏里南），（委内瑞拉），（圭亚那），（苏里南），（委内瑞拉），（委内瑞拉），（委内瑞拉），（委内瑞拉），（委内瑞拉），（委内瑞拉），（苏里南、圭亚那），（巴西），（苏里南），（委内瑞拉），（巴西、法属圭亚那、苏里南），（苏里南），（法属圭亚那），（苏里南），以及（圭亚那）。我们在圭亚那发现了另一个新物种的基因支持，目前仅从雌性个体中得知，我们将其称为sp.。我们检查了该地区先前已知的四个物种的模式标本，发现 García新异名和 García新异名与 García, 2000同种，并与该物种同义，在此对其进行重新描述。我们重新描述了 García并扩大了该物种的分布范围，包括巴西北部、圭亚那和法属圭亚那。所有物种均为水生，大多数与森林溪流和森林池塘有关。在这21个物种中，超过一半（11个）仅在一个地点被发现，这表明该属可能还有更多的微特有物种有待在该地区发现。雄性生殖器特征对于确认某些物种的身份至关重要，因此仅根据形态学并不总是能够对未关联的雌性标本进行准确鉴定。提供了整体形态图片以及南美洲东北部该属的修订检索表。
