Neoneurus Haliday, 1838

Neoneurus Haliday, 1838: 213 . No species included. Type species: Neoneurus halidaii Marshall, 1897 [= Neoneurus auctus (Thomson, 1895)]. First included species by Marshall (1897).

Ecclites Foerster, 1863: 244 . Type species: Ecclites clypeatus Foerster, 1863 [= Neoneurus clypeatus (Foerster, 1863)]. Synonymized with Neoneurus by Ashmead (1900).

General description. Antenna with 16 antennomeres, longer than head and mesosoma combined. Head comparatively large and transverse. Maxillary palp with 2 segments, labial palp with 1 segment. Fore wing with a short and complete marginal cell, with a spectral spurious vein (wing fold) extending from apex of radial cell towards wing margin, hind wing with closed cell. Fore legs of ♀ modified, fore tibia robust, often with a basal longitudinal carina along inner margin and a sub-basal protuberance on anterior margin; tibial spurs large and distinct, outer spur at least 0.5 × as long as hind basitarsus; tarsi slender, tapering towards apex; tarsal claws minute; arolium, especially fore arolium, greatly enlarged. Metasoma narrow, with apex of ♀ strongly compressed. Ovipositor shorter than hind basitarsus, compressed, sickle-like, and strongly curving anterad when exserted.

Biology. Parasitoid of adult ant workers, for details see Shaw (1993) and Gómez Durán and van Achterberg (2011). The known hosts are Formica cunicularia Latreille, F. podzolica Francoeur, F.pratensis Retzius and F. rufa L. (Yu et al., 2016).

Distribution. Palaearctic and Nearctic Regions.

Remarks. The genus is recorded in China for the first time.