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Larvae of the Nearctic species of the stonefly genus Megarcys Klaplek (Plecoptera: Perlodidae).

机译:石斑鱼属(I> Megarcys Klaplek(鳞翅目:Perlodidae)的Nearctic种的幼虫。

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摘要

Associated larvae of the five Nearctic species of Megarcys are comparatively described and illustrated. Four of them, Megarcys irregularis Banks, M. subtruncata Hanson, M. watertoni (Ricker), and M. yosemite (Needham & Claassen) are described in detail for the first time. Body size and setation, wingpad macroptery/brachyptery, and gill size were variable between populations of some species. Diagnostic differences were not found in late instar larvae of the five species in color and pigment patterns, mouthparts, body and appendage setation, gill size and structure, and developing male and female genitalia. The detailed descriptions and measurements help expand the generic diagnosis, show morphological differences between populations of different habitats, and provide an atlas of illustrations for larvae of the five species.
机译:比较地描述和说明了五种梅氏巨藻的相关幼虫。首次详细描述了其中的四个,分别是不规则巨无霸银行,特伦卡塔·汉森分支,沃特尼分支(Ricker)和优胜美地分支(Needham&Claassen)。在某些物种的种群之间,身体的大小和设置,翼翅目巨翅目/腕足目和g的大小是可变的。在这五个物种的晚龄幼虫的颜色和色素图案,口器,身体和附件的位置、,的大小和结构以及正在发育的男性和女性生殖器中,没有发现诊断差异。详细的描述和测量有助于扩大通用的诊断范围,显示不同生境的种群之间的形态学差异,并为这五个物种的幼虫提供插图集。

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