Abstract

The genus Agnostrup Foddai, Bonato, Pereira & Minelli, 2003 is one of the least known genera within the family Mecistocephalidae Bollman, 1893. In this study, we rediscovered the genus Agnostrup in China and provided a comprehensive redescription of A. striatus (Takakuwa, 1949). Additionally, we conducted a molecular phylogenetic analysis using CO1, 16S, and 28S sequence data, revealing a low genetic distance between Agnostrup and Nannarrup Foddai, Bonato, Pereira & Minelli, 2003. After comparing the morphological characteristics of these two genera, we synonymized the genus Nannarrupsyn. nov. with Agnostrup. As a result, three species previously belonging to the genus Nannarrup were transferred to Agnostrup: A. hoffmani (Foddai et al., 2003), comb. nov., A. innuptus (Tsukamoto, 2022), comb. nov., and A. oyamensis (Tsukamoto, 2022), comb. nov.

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