Korovchinsky Nikolai M, Walsh Elizabeth J, Smolak Radoslav
A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, Leninsky prospect 33, 119071 Moscow, Russian Federation..
Zootaxa. 2017 Apr 3;4250(1):77-89. doi: 10.11646/zootaxa.4250.1.6.
Diaphanosoma turkanae sp. nov. is described from Lake Turkana (Kenya, East Africa). This species is the second Afrotropical endemic in the order Ctenopoda. It is characterized by a distinctive feature, the presence of an unusually small number of setae on the upper two-segmented antennal branch (exopodite); the proximal segment of the branch always bears three setae while the distal segment bears either six or seven setae. Morphologically the new species is most similar to D. orghidani Negrea, also occurring in Africa and presumably sharing an evolutionary affinity. D. turkanae sp. nov. co-occurs with two other species of the genus, D. lacustris Kořinek and D. excisum Sars, which are briefly described here. Temperate-subtropical species of the genus Diaphanosoma penetrate far south along the Nile River system up to the equatorial and Ethiopian lakes and further southwards, often forming multi-species assemblages.
图尔卡纳透明溞新种（Diaphanosoma turkanae sp. nov.）是在图尔卡纳湖（肯尼亚，东非）发现并被描述的。该物种是栉足目（Ctenopoda）中第二个分布于非洲热带地区的特有物种。其特征显著，在于其双节触角分支（外肢）上的刚毛数量异常少；分支的近端节段总是有三根刚毛，而远端节段有六根或七根刚毛。从形态学上看，这个新物种与同样分布于非洲且可能具有进化亲缘关系的奥尔吉达尼透明溞（D. orghidani Negrea）最为相似。图尔卡纳透明溞新种与该属的另外两个物种，即拉库斯特透明溞（D. lacustris Kořinek）和锯缘透明溞（D. excisum Sars）共生，本文对这两个物种也做了简要描述。透明溞属的温带 - 亚热带物种沿着尼罗河水系向南深入，直至赤道湖泊和埃塞俄比亚湖泊，并进一步向南延伸，常常形成多物种组合。
