Lipolexis Forster 1862

Lipolexis Förster, 1862 Lipolexis Förster, 1862: 249. Type species: Lipolexis gracilis Förster, 1862, by original designation. Gynocryptus Quilis, 1931: 28. Type species: Gynocryptus pieltaini Quilis, 1930, by original designation and monotypy. Type species. Lipolexis gracilis Förster, 1862, by original designation. Type information. Holotype female, ZMHB. Country of type locality: Germany. Diagnosis. Lipolexis gracilis has a petiole with central bifurcating carinae, a feature that positions it within the ‘ gracilis ’ species-group. It possesses maxillary palps with four palpomeres, labial palps with one palpomere (as in L. pelopsi). However, it differs from the latter by a less pubescent body and elongated petiole (proportions between length and maximum width of petiole at spiracles, 3.0– 3.6 in L. gracili s (2.4–2.6 in L. pelopsi )). Biology. Lipolexis are solitary koinobiont endoparasitoids of aphids (Aphididae). Molecular data. There are 495 DNA-barcode compliant sequences of Lipolexis in BOLD representing 28 different BINs, five species are also represented by seven other gene fragments (12S, 16S, 18S, 28S, 5.8S, ATPASE 6, and NADH), and one species, L. gracilis, by 2590 UCE loci (276.6 million bases) in the NCBI (https://www.ncbi. nlm.nih.gov/) sequence read archive (SRA). Note. This genus appears to have its origins in the Oriental and Palaearctic regions (Kocić et al., 2020), and records from Australasia, the Nearctic, and Neotropics are due to deliberate introductions.