Abstract The larvae of three species of Agabus s. str. Leach, 1817, A. bifarius (Kirby, 1837), instar III, A. disintegratus (Crotch, 1873), instars I–III, and A. falli (Zimmermann, 1934), instars I–III, are described including for the first time a detailed chaetotaxy analysis of the cephalic capsule, head appendages, legs, last abdominal segment and urogomphi. Larvae of A. falli show several unique morphological features that differentiate them from those of the other species of Agabini studied. A provisional parsimony analysis based on 55 larval characteristics of 17 species in seven genera of the subfamily Agabinae was conducted using the program TNT. As a result of this analysis, Agabini was recovered as polyphyletic while Platynectini and Hydrotrupini are deemed monophyletic.

中文翻译：

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Agabinae（鞘翅目：Dytiscidae）的幼虫形态：对 Agabus s 亚属的三个物种的描述。海峡 利奇，1817 年，有系统发育的考虑

摘要 三种 Agabus s 的幼虫。海峡 Leach, 1817, A. bifarius (Kirby, 1837), instar III, A. disintegratus (Crotch, 1873), instars I–III, and A. falli (Zimmermann, 1934), instars I–III, 描述包括第一次对头囊、头部附属物、腿、最后一个腹节和 urogomphi 进行了详细的 chaetotaxy 分析。A. falli 的幼虫表现出几种独特的形态特征，使它们与所研究的其他 Agabini 物种的形态特征区分开来。使用程序 TNT 进行了基于 Agabinae 亚科 7 个属中 17 个物种的 55 个幼虫特征的临时简约分析。作为该分析的结果，Agabini 被回收为多系的，而 Platynectini 和 Hydrotrupini 被认为是单系的。