Review of German Spilomicrus Westwood (Hymenoptera, Diapriidae, Spilomicrini)

Abstract

This study provides an integrative taxonomy-based review for the genus Spilomicrus Westwood in Germany using DNA barcoding and classic morphology. Spilomicrus simplex Tomsik, 1947 is placed in synonymy with S. antennatus Jurine, 1807; Spilomicrus thomsoni Kieffer, 1911 is removed from synonymy with S. hemipterus Marshall, 1868. A lectotype is designated for Spilomicrus nigripes Thomson, 1858. Newly recorded for Germany are the following species: S. thomsoni Kieffer, 1911, S. crassiclavis Marshall, 1868, S. lusitanicus Kieffer, 1910 and S. diversus Chemyreva, 2021. Three species, Spilomicrus brevimalaris sp. nov., S. flavecorpus sp. nov. and S. politus sp. nov. are described as new to science. The 23 DNA-barcodes with species identification present a substantial addition over the previous German checklist. This study aims to update the number of nationwide known Spilomicrus species from fifteen to twenty. Furthermore, a new key to identify all European Spilomicrus species is provided.