Electronoyesella antiqua Simutnik, gen. et sp. nov. (Chalcidoidea, Encyrtidae) from Rovno amber

Abstract

Electronoyesella antiqua Simutnik, gen. et sp. nov., is described and illustrated based on a female specimen from late Eocene Rovno amber. Like most previously described Eocene Encyrtidae, the new taxon differs from the majority of extant ones in a number of features. Sclerotised metasomal structures, similar to the paratergites of extant Tetracneminae, are seen here for the first time in fossils. The new genus is characterized also by the frontovertex with four vertical rows of piliferous punctures and the face also with intricate sculpture; notauli are present as small but distinct depressions, only anteriorly; the apex of metatibia with a peg originating from a round, deep pit; and the unusual setation of the hind wing.

First record of Archaeocercoides puchkovi Simutnik, 2022 (Hymenoptera, Chalcidoidea, Encyrtidae) from late Eocene Danish amber

“…The encyrtid fauna found in European ambers was varied and peculiar. In particular, species have been discovered featuring a male antenna with a distinct anellus ; a four-segmented female funicle ; an unusually small, bare (without microsetae) mesotibial spur (Simutnik et al, 2022c); a peg or spicule originating from the round, deep pit at the apex of metatibia and a transverse row of thickened setae alongside the spur vein of the hind wing (Simutnik et al, 2022d); a line of long setae alongside the costal cell of the hind wing (Simutnik et al, 2022a, d); as well as other interesting characters. Such features are absent or very rare in extant encyrtids.…”

“…In extant Tetracneminae, the most similar position of the cerci is found only in Savzdargia hofferi (Pilipjuk, 1974). In the extinct Encyrtidae without the filum spinosum (supposedly the members of Tetracneminae (see Simutnik et al, 2022d)), the apical position of the cerci is reported in a number of species, including all of the known earliest taxa from middle Eocene Sakhalinian amber (Simutnik, 2021;Simutnik et al, 2021b).…”