First record of the parasitoid subfamily Doryctinae (Hymenoptera, Braconidae) in Rovno amber: description of a new genus and species with stigma-like enlargement on the hind wing of the male

Abstract

A new genus and species of the braconid parasitoid subfamily Doryctinae, Eocenhecabolus kotenkoigen. et sp. nov., from the late Eocene Rovno amber are described and illustrated. Eocenhecabolusgen. nov. is the first unambiguously extinct Doryctinae genus. This genus is described from the male and characterised by the followings features: in the fore wing by the postfurcal position of the recurrent vein (m-cu) relatively to the first radiomedial vein (2-SR), and a distally open brachial (second subdiscal) cell; in the hind wing by the presence of the elementary stigma-like enlargement on the distal half of the costal (1-SC+R) vein. The different types of stigma-like enlargements found in the hind wings of males in the subfamily Doryctinae are discussed.

The first fossil of subgenus Neomicrambe (Coleoptera: Cryptophagidae: Micrambe) from Danish amber

“…However, exactly half of Danish hymenopteran genera are now unknown from Baltic amber (Belokobylskij et al 2024b). In our opinion, this might be explained by many cryophobic elements in the Danish and Rovno amber forests living on the northern limits of their distribution (e. d. Dlussky et al 2014;Matalin et al 2021;Jenkins Shaw et al 2023;Kirichenko-Babko & Perkovsky 2023;Nabozhenko & Perkovsky (2023); Legalov et al 2023aLegalov et al , 2023bLyubarsky et al 2023;Telnov et al 2023;Belokobylskij et al 2023Belokobylskij et al , 2024aMelnitsky et al 2024;Sokolov et al 2024;Mamontov et al 2024). The subgenus Neomicrambe could be a good new example of a cryophobic taxa (see Archibald et al 2023).…”

Electroadicella unipetra sp. nov., a new fossil species of Leptoceridae (Insecta: Trichoptera) from Eocene Rovno amber

“…The aquatic larvae of caddisflies have no connections with the amber trees, although the adult insects might have localities for mating and estivation. Warmer (Belokobylskij et al 2023;Kirichenko-Babko & Perkovsky 2023) and supposedly more dry climate of Rovno as compared with Baltic amber forest as well as insularity of the Volhynian Uplift in late Eocene may result in more than 80% of Rovno amber caddisfly species being endemics or having northern distribution boundary at the late Eocene lying along the southern coast of the Subparathetys (Sokolov & Perkovsky 2020). The caddisflies of Baltic amber are well-studied (Ulmer 1912;Wichard 2013, etc.…”