Kosterin Oleg E
Institute of Cytology & Genetics SB RAS, Acad. Lavrentyev ave. 10, Novosibirsk, 630090, Russia. Novosibirsk State University, Pirogova str. 2, Novosibirsk, 630090, Russia; Email:
Zootaxa. 2016 Sep 26;4171(1):51-76. doi: 10.11646/zootaxa.4171.1.2.
In the current sense, Merogomphus Martin, 1904, is an artificial genus. It includes two unrelated groups of species: those with lyrate cerci with or without an outer spine and those with simple cerci, plus two species with large and broad epiproct branches placed in Merogomphus obviously in error. At the same time a number of species similar and obviously related to the former group were described from China in the genus Anisogomphus Selys, 1857. To resolve this taxonomic tangle, the genus Merogomphus is restricted to include only species with lyrate cerci: M pavici (Martin, 1904) (the type species), M. longistigmus (Fraser, 1922), M. vandykei (Needham, 1930), M. femoralis (Laidlaw, 1931), M. vespertinus (Chao, 1999) and M. torpens (Needham, 1930). A new genus Euthygomphus (type species: Platygomphus martini Fraser, 1922) is erected to contain species with simple cerci and moderately divergent epiproct branches, formerly attributed to either Merogomphus or Anisogomphus: Euthygomphus parvus (Krüger, 1899) comb. nov., E. martini (Fraser, 1922) comb. nov., E. koxingai Chao, 1954 comb. nov., E. chaoi Liu 1991 comb. nov., E. jinggangshanus Liu, 1991 comb. nov., E. yunnanensis Zhou et Wu, 1992 comb. nov. Euthygomphus schorri Kosterin, 2016, sp. nov. is described (type locality: Cambodia, Mondulkiri Province, 3.5-3.8 km ESE of Sen Monorom, holotype in RMNH), A new synonymy Merogomphus chaoi Yang & Davies, 1993 = Anisogomphus pinratani Hämäläinen, 1991, and a new combination Anisogomphus tamdaoensis (Karube, 2001) comb. nov. are proposed [corrected]. The published records of 'Merogomphus parvus' from Laos, Thailand, Vietnam, Cambodia and Vietnam are reidentified as E. yunnanensis, and new records and illustrations of this species from Cambodia are provided.
从当前的分类学角度来看，1904年建立的Merogomphus Martin属是一个人为划分的属。它包含两个没有亲缘关系的物种组：一类是尾铗呈琴形、有或没有外侧刺的物种，另一类是尾铗简单的物种，另外还有两个物种，其肛上板分支又大又宽，显然错误地被归入了Merogomphus属。与此同时，在中国描述了一些与前一组相似且明显相关的物种，它们被归入了1857年建立的Anisogomphus Selys属。为了解决这种分类学上的混乱局面，Merogomphus属被限定为仅包含尾铗呈琴形的物种：M pavici（Martin，1904）（模式种）、M. longistigmus（Fraser，1922）、M. vandykei（Needham，1930）、M. femoralis（Laidlaw，1931）、M. vespertinus（Chao，1999）和M. torpens（Needham，1930）。一个新的Euthygomphus属（模式种：Platygomphus martini Fraser，1922）被建立，用于包含尾铗简单且肛上板分支适度分开的物种，这些物种之前要么被归入Merogomphus属，要么被归入Anisogomphus属：Euthygomphus parvus（Krüger，1899）新组合、E. martini（Fraser，1922）新组合、E. koxingai Chao，1954新组合、E. chaoi Liu 1991新组合、E. jinggangshanus Liu，1991新组合、E. yunnanensis Zhou et Wu，1992新组合。描述了Euthygomphus schorri Kosterin，2016新种（模式产地：柬埔寨，蒙多基里省，森莫诺隆东南偏东3.5 - 3.8公里处，模式标本保存在荷兰国家自然历史博物馆），提出了一个新的同物异名Merogomphus chaoi Yang & Davies，1993 = Anisogomphus pinratani Hämäläinen，1991，以及一个新组合Anisogomphus tamdaoensis（Karube，2001）新组合[已修正]。来自老挝、泰国、越南、柬埔寨和越南的已发表的“Merogomphus parvus”记录被重新鉴定为E. yunnanensis，并提供了该物种在柬埔寨的新记录和插图。
