Schmidt Joachim, Faille Arnaud
University of Rostock, Institute of Biosciences, General and Systematic Zoology, Universitätsplatz 2, 18055 Rostock, Germany Lindenstraße 3a, 18211 Admannshagen, Germany.; Email:
Bavarian State Collection of Zoology, Münchhausenstraße 21, 81247 Munich, Germany.; Email:
Zootaxa. 2015 Oct 12;4028(4):539-50. doi: 10.11646/zootaxa.4028.4.5.
The first reliably identified Trechini beetle species from Baltic amber, Trechus balticus sp. n., is described. This new fossil species is most similar to extant species of the Palaearctic Trechus sensu stricto, as well as to the Nearctic Microtrechus Jeannel, 1927. Since the fossil specimen is a female and some important character states cannot be investigated, its true systematic position within the genus Trechus sensu lato remains open. Trechoides fasciatus Motschulsky, 1856 is another fossil species that perhaps belongs to the Trechini clade. However, since the original description does not present any character of systematic value and, because the type is very probably lost, the true systematic position of this taxon remains unknown.
描述了首个来自波罗的海琥珀的经可靠鉴定的Trechini甲虫物种，即波罗的海Trechus balticus sp. n.。这个新的化石物种与古北区狭义Trechus的现存物种以及近北区的Microtrechus Jeannel（1927年）最为相似。由于化石标本是雌性，一些重要的特征状态无法研究，其在广义Trechus属内的真正系统位置仍不明确。1856年的Motschulsky的Trechoides fasciatus是另一个可能属于Trechini进化枝的化石物种。然而，由于原始描述未呈现任何具有系统价值的特征，且模式标本很可能已丢失，该分类单元的真正系统位置仍然未知。
