Thacker Dimple, Myers Alan A, Trivedi Jigneshkumar N, Mitra Santanu
Animal Taxonomy and Ecology Laboratory; Department of Life sciences; Hemchandracharya North Gujarat University; Patan- 384265; Gujarat; India.
School of Biological; Earth and Environmental Sciences; University College Cork; Cork Enterprise Centre; Distillery Fields; North Mall; Cork; Ireland.
Zootaxa. 2024 May 1;5446(3):383-404. doi: 10.11646/zootaxa.5446.3.4.
The current study was conducted on the basis of a small collection of amphipods made from Chilika Lake that contained 4 species. Three were described as new species, including one new genus: Parhyale kalinga sp. nov., Chilikorchesta chiltoni gen. nov. sp. nov. and Grandidierella rabindranathi sp. nov., while a fourth one was a previously reported species: Quadrivisio bengalensis Stebbing, 1907. Parhyale kalinga sp. nov. can be differentiated from its closely related congeners Parhyale basrensis Salman, 1986 and Parhyale darvishi Momtazi & Maghsoudlou, 2016 by having male gnathopod 2 propoduswith 2 robust setae at the base of the palm and 2 small setae slightly behind the palm and dactylus much smaller than palm. Chilikorchestia chiltoni gen. nov. sp. nov. can be differentiated from the closely related genus Morinoia Lowry & Myers, 2019 by its incrassate male antenna 2 and untapered telson. Grandidierella rabindranathi sp. nov. can be differentiated from its closely related congeners G. mahafalensis Coutière, 1904 and Grandidierella nioensis Myers, Sreepada & Sanaye, 2019 by having male gnathopod 2 carpus oval shaped with both margins convex.
本研究基于从奇利卡湖采集的一小批包含4个物种的端足目动物样本展开。其中3个被描述为新物种，包括1个新属：卡林加新米虾（Parhyale kalinga sp. nov.）、奇利卡新足钩虾属新种（Chilikorchesta chiltoni gen. nov. sp. nov.）和拉宾德兰纳特大颚钩虾（Grandidierella rabindranathi sp. nov.），而第4个是先前已报道的物种：孟加拉四指钩虾（Quadrivisio bengalensis Stebbing，1907）。卡林加新米虾可通过以下特征与亲缘关系相近的同属物种1986年发现的巴氏新米虾（Parhyale basrensis Salman）和2016年发现的达尔维什新米虾（Parhyale darvishi Momtazi & Maghsoudlou）区分开来：雄体第二颚足腕节在掌节基部有2根强壮刚毛，在掌节稍后方有2根小刚毛，且指节比掌节小得多。奇利卡新足钩虾属新种可通过其加厚的雄体第二触角和未变细的尾节与亲缘关系相近的2019年发现的莫里诺伊亚属（Morinoia Lowry & Myers）区分开来。拉宾德兰纳特大颚钩虾可通过雄体第二颚足腕节椭圆形且两边缘凸出这一特征，与其亲缘关系相近的同属物种1904年发现的马哈法莱大颚钩虾（G. mahafalensis Coutière）和2019年发现的尼奥大颚钩虾（Grandidierella nioensis Myers, Sreepada & Sanaye）区分开来。
