Palacio Alejandro Del, Lozano Federico, Muzón Javier
Laboratorio de Biodiversidad y Genética Ambiental (BioGeA), Universidad Nacional de Avellaneda, Mario Bravo 1460 esq. Isleta, C.P. 1870, Piñeyro, Buenos Aires, Argentina.
An Acad Bras Cienc. 2018 Jul-Sep;90(3):3017-3022. doi: 10.1590/0001-3765201820180093.
The American genus Argia, with more than 100 species described, is the most speciose genus of Odonata in the world. In this contribution, the final stadium larva of Argia serva, the southernmost distributed species of Argia, is described and diagnosed based on reared material from Martín García island, Buenos Aires, Argentina. The larva of this species can be easily separated from the other Argentinean Argia by the following combination of characters: sternum of S8 covered with spines (bare in A. translata); antennal segment 3 longer than 1+2 (equal to or shorter than 1+2 in A. joergenseni and A. jujuya); palpal setae absent (present in A. croceipennis). A key to the known larvae of Argia of the Southern Cone is provided.
美洲的阿吉蜻属已描述的物种超过100种，是世界上蜻蛉目物种最为丰富的属。在本论文中，基于来自阿根廷布宜诺斯艾利斯省马丁·加西亚岛的人工饲养材料，对阿吉蜻属分布最南端的物种——塞尔瓦阿吉蜻的末龄幼虫进行了描述和鉴别。该物种的幼虫可通过以下特征组合与阿根廷的其他阿吉蜻属物种轻松区分开来：第八腹节腹板布满刺（在透翅阿吉蜻中裸露）；触角第三节长于第一节和第二节之和（在约根森阿吉蜻和胡胡伊阿吉蜻中等于或短于第一节和第二节之和）；无颚须刚毛（在玫翅阿吉蜻中有）。提供了一个南锥体地区已知的阿吉蜻属幼虫检索表。
