World checklist of the genus Lipolexis Förster (Hymenoptera, Braconidae, Aphidiinae) with description of a new species from Thailand

We describe and illustrate a new species of the aphidiine braconid genus Lipolexis Förster, Lipolexis khaoyaiensis sp. nov., from Thailand, using an integrative approach. Morphologically, the new species is similar to L. peregrinus Tomanović and Kocić, 2020, but molecular analysis showed clear separation of at least 27 independent Lipolexis lineages, only eight of which correspond to previously known species, plus the one which represents the new species described here.

A molecular phylogeny based on all available barcodes support that the genus comprises two well supported clades, with L. khaoyaiensis sp. nov. being recovered in the gracilis species-group with strong support (100% ultrafast bootstrap). A modified section of the identification key to species of Lipolexis is added to include the new species. Reported host associations for each of the described species as well as a distribution map of all records of species plus provenances of all barcoded specimens is provided.