Vladimiretskia nathani gen. et sp. nov. (Diptera, Cecidomyiidae: Porricondylinae, Asynaptini, Vladimiretskiana subtr. nov.) from Eocene Rovno amber with description of their eggs Author Fedotova, Zoya A. 0000-0002-8888-5979 All-Russian Institute of Plant Protection of the Russian Academy of Sciences, 196608 Saint Petersburg - Pushkin, Russia; https: // orcid. org / 0000 - 0002 - 8888 - 5979 zoya-fedotova@mail.ru Author Vasilenko, Dmitry V. 0000-0002-4827-7290 Laboratory of Arthropods, A. A. Borissiak Paleontological Institute of the Russian Academy of Sciences, 117647 Moscow, Russia; https: // orcid. org / 0000 - 0002 - 4827 - 7290 & Paleontological Laboratory, Cherepovets State University, 162600 Cherepovets, Russia; Author Perkovsky, Evgeny E. 0000-0002-7959-4379 Natural History Museum of Denmark, 2100 Copenhagen, Denmark. https: // orcid. org / 0000 - 0002 - 7959 - 4379 * Corresponding author. E-mail: zoya-fedotova @ mail. ru text Ecologica Montenegrina 2024 2024-04-11 72 146 157 http://dx.doi.org/10.37828/em.2024.72.14 journal article 10.37828/em.2024.72.14 2336-9744 13249067 urn:lsid:zoobank.org:pub:63F1C2C7-7296-4CDE-9E53-D83174DB295F Tribe Asynaptini Enderlein, 1920 Remarks. Recently the diagnosis of the tribe Asynaptini was revised following analysis of the monotypic genus Guyasutomyia Plakidas, 2023 ( Plakidas 2023 ). We update this by including the following characters of the female of Vladimiretskia nathani Fedotova et Perkovsky , gen. et sp. nov. described below. These include: eyes holoptic, almost completely covering the head without an eye bridge (figs 2 a, 3 i); antennae with 16 flagellomeres that possess a short neck and circumfilar sensoria (figs 1 a, 3 b, c); very short mouth parts and palpi; a wide head, unsclerotized costal cell, short straight vein R 5 not reaching wing apex; simple CuA and M 4; and the absence of r-m (figs 1 a, 3 a). The female abdomen is telescopic from segments 6–8, with an immobile 9th segment. The cerci are separate with 3-segmented dorsal lamellae (figs 1 a, e). Previously, the collective tribe Asynaptini (167 species, 18 genera), was not divided into subtribes ( Panelius 1965 ; Parnell 1971 ; Fedotova & Sidorenko 2007 ; Jaschhof & Jaschhof 2013 , 2023 ; Gagné & Jaschhof 2021 ; Plakidas 2023 ). Asynaptini genera are extremely diverse in eye shape, width of the ocular bridge, the structure of palpi, wing venation, and male and female genitalia. However, all genera of Asynaptini have an increased number of flagellomeres (more than 14), a characteristic bend of rs , have the crossvein r-m , the curved R 5 fuses with C before or behind the wing apex, and CuA and M 4 are present, simple, well-developed, and reach the edge of the wing. Female Asynaptini are little known. Most species were collected in various traps, and as females of closely related species and genera are very similar, species have been described primarily by males if the adults were not reared from larvae.