Expanding the knowledge on Aximopsis Ashmead, 1904 (Hymenoptera: Eurytomidae): a new species from Brazil and novel distributional data for Aximopsis masneri Gates, 2009.

Aximopsis Ashmead, 1904 (Hymenoptera: Eurytomidae) is widely distributed across the Neotropics, with 14 of its 40 described species occurring in the region. Here, we describe and illustrate Aximopsis batistai sp. nov., a new parasitoid wasp species discovered in the Amazon rainforest. The new species is described based on a female specimen collected in Manaus, Amazonas, Brazil. Additionally, we report the first occurrence of Aximopsis masneri Gates, 2009 in the Brazilian Amazon, based on two female specimens collected at the same location. This finding extends the known distribution of A. masneri, previously recorded in Panama, Trinidad & Tobago, and southeastern Brazil, by approximately 2,600 km into the Amazon basin. Detailed illustrations, diagnostic comparisons, a key to Brazilian species of Aximopsis, and a distribution map of A. masneri are provided.