taxonID	type	description	language	source
5885D5164ED05961B9E6C4163CFA56D4.taxon	diagnosis	Diagnosis. Antennae 13 - segmented, inserted into head very close to posterior clypeal margin; scape very short, less than total length of first and second funicular segments, funiculus filiform, without apical club. Palp formula 3, 2. Mandibles well developed, subtriangular, masticatory margin with larger basal tooth, four minor sharp teeth and much longer sharp apical tooth. Median portion of clypeus evenly convex, without median and lateral carinae, its anterior margin convex, without a notch. Scutum with broad notauli. Propodeum distinctly angulated in profile, its dorsal surface delineated laterally by sharp longitudinal ridges. All meso- and metatibiae with well-developed simple spur, pretarsal claws simple. Forewing with closed cells 1 + 2 r, 3 r and mcu; cell 3 r relatively short, about the same length as cell 1 + 2 r; free vein M branching off from RS approximately at the midlength between junction of cross-vein 2 r-rs with RS and vein m-cu; cross-vein cu-a located far from base of wing, so that branch 1 M + Cu much longer than 2 M + Cu, Icu = 1.75, Icua = 1.28. Hind wing without jugal lobe; free abscissa M absent; branch 1 RS well developed; vein cu-a located close to base of wing, so that branch 1 M + Cu much shorter than 2 M + Cu, Icua = 2.37.	en	Radchenko, Alexander G., Proshchalykin, Maxim Yu. (2021): New extinct ant genus (Hymenoptera, Formicidae, Myrmicinae) from late Eocene Rovno amber. Journal of Hymenoptera Research 84: 271-282, DOI: http://dx.doi.org/10.3897/jhr.84.65238, URL: http://dx.doi.org/10.3897/jhr.84.65238
5885D5164ED05961B9E6C4163CFA56D4.taxon	etymology	Etymology. The new genus is named in honor of our colleague and friend Prof. Arkady S. Lelej (Federal Scientific Center of the East Asia Terrestrial Biodiversity, Vladivostok, Russia) on the occasion of his 75 th birthday and in recognition of his great contributions to the study of Hymenoptera.	en	Radchenko, Alexander G., Proshchalykin, Maxim Yu. (2021): New extinct ant genus (Hymenoptera, Formicidae, Myrmicinae) from late Eocene Rovno amber. Journal of Hymenoptera Research 84: 271-282, DOI: http://dx.doi.org/10.3897/jhr.84.65238, URL: http://dx.doi.org/10.3897/jhr.84.65238
FAFD38B0F7DF508DB98728925FC99EBF.taxon	description	Figures 1, 2, 3, 4	en	Radchenko, Alexander G., Proshchalykin, Maxim Yu. (2021): New extinct ant genus (Hymenoptera, Formicidae, Myrmicinae) from late Eocene Rovno amber. Journal of Hymenoptera Research 84: 271-282, DOI: http://dx.doi.org/10.3897/jhr.84.65238, URL: http://dx.doi.org/10.3897/jhr.84.65238
FAFD38B0F7DF508DB98728925FC99EBF.taxon	materials_examined	Material examined. Holotype: male, SIZK No. UA- 27875, Ukraine, Rovno Region, Klesov, Rovno amber, late Eocene, 33.9 - 37.8 Ma; AntWebCASENT 0917546.	en	Radchenko, Alexander G., Proshchalykin, Maxim Yu. (2021): New extinct ant genus (Hymenoptera, Formicidae, Myrmicinae) from late Eocene Rovno amber. Journal of Hymenoptera Research 84: 271-282, DOI: http://dx.doi.org/10.3897/jhr.84.65238, URL: http://dx.doi.org/10.3897/jhr.84.65238
FAFD38B0F7DF508DB98728925FC99EBF.taxon	diagnosis	Diagnosis. As for the genus.	en	Radchenko, Alexander G., Proshchalykin, Maxim Yu. (2021): New extinct ant genus (Hymenoptera, Formicidae, Myrmicinae) from late Eocene Rovno amber. Journal of Hymenoptera Research 84: 271-282, DOI: http://dx.doi.org/10.3897/jhr.84.65238, URL: http://dx.doi.org/10.3897/jhr.84.65238
FAFD38B0F7DF508DB98728925FC99EBF.taxon	description	Description. Male. Body length 4.1 mm. Head subglobular, slightly wider than long, gradually rounded behind eyes, without marked occipital corners and with convex occipital margin. Eyes very large, their maximum diameter half of head length, situated distinctly in front of mid-length of sides of head, so genae very short. Ocelli large, forming obtuse triangle, diameter of central ocellus subequal to width of scape. Frons relatively narrow, 0.25 head width, frontal sockets fully exposed. Frontal triangle well marked. Mandibles quite long, ca. 0.4 head length. Apical segment of maxillary palps twice as long as preapical one. Antennal scape ca. twice as long as width and ca. 4.5 times shorter than head. First funicular segment very short, somewhat shorter than wide and half as long as second segment; all subsequent segments of same width; second to 11 th segment subequal in length, last segment twice as long as second one. Whole head with coarse reticulation, clypeus with sinuous longitudinal rugae, its central part and mandibles smooth; eyes surrounded by narrow foveate groove. Temples and occipital margin with quite numerous subdecumbent hairs of moderate length; antennal scape with sparse subdecumbent, but quite long hairs; funicular segments with very short and abundant decumbent to subdecumbent pilosity; anterior clypeal margin without long setae, with only a few short, thin hairs; mandibles with quite long semierect hairs. Mesosoma 1.6 times as long as high, scutum moderately convex, posterior surface of propodeum 1.2 times as long as dorsal one. Notauli deep and wide, distinctively arched in profile view, with coarse short transverse rugae (foveate). Petiole with distinct peduncle, 1.6 times as long as high, its node with widely rounded dorsum; postpetiole subglobular, slightly higher than petiole. Spurs on meso- and metatibiae relatively long, equal to width of tibia at point of their articulation. Scutum, scutellum and propodeal dorsum with coarse reticulation; sides of pronotum, mesopleura and lower part of sides of propodeum smooth; gaster smooth. Mesosoma, waist and gaster with moderately dense erect to semierect hairs, legs with decumbent to subdecumbent pilosity, femora with additional longer suberect hairs. Genitalia small and barely visible. Forewings: pterostigma rather long and narrow; cross-vein rs-m completely reduced, so that cell rm absent; cell mcu of moderate size, trapezoidal, its height subequal to midline, its distal point does not reach level of basal end of pterostigma, vein section 1 RS + M somewhat shorter than 1 Cu; cell 1 + 2 r heptagonal, relatively short, veins 1 R 1, 2 R 1 and 3 R 1 of nearly equal length; vein sections 2 RS + M and 3 RS subequal in length; cross-veins 2 r-rs and 1 RS well developed, 1 RS slightly inclined toward base of wing, 2 r-rs almost perpendicular to 2 R 1 and 3 R 1 at the point of their junction.	en	Radchenko, Alexander G., Proshchalykin, Maxim Yu. (2021): New extinct ant genus (Hymenoptera, Formicidae, Myrmicinae) from late Eocene Rovno amber. Journal of Hymenoptera Research 84: 271-282, DOI: http://dx.doi.org/10.3897/jhr.84.65238, URL: http://dx.doi.org/10.3897/jhr.84.65238
FAFD38B0F7DF508DB98728925FC99EBF.taxon	description	Measurements (in mm). HL 0.73, HW 0.77, FW 0.19, SL 0.16, OL 0.36, GL 0.06, MdL 0.30, ML 1.43, MH 0.88, PL 0.39, PH 0.27, PPL 0.27, PPH 0.29, HTL 0.60, WL 3.18, WW 1.13; length of funicular segments from second to 11 th: 0.13, 0.13, 0.14, 0.14, 0.14, 0.14, 0.14, 0.14, 0.16, 0.26. Indices: CI 0.95, SI 1 0.22, SI 2 0.21, FI 0.25, MdI 0.41, OI 1 0.50, OI 2 0.47, PI 1 0.54, PI 2 1.58, PPI 1 0.39, PPI 2 0.95, MI 1.62, WI 2.83.	en	Radchenko, Alexander G., Proshchalykin, Maxim Yu. (2021): New extinct ant genus (Hymenoptera, Formicidae, Myrmicinae) from late Eocene Rovno amber. Journal of Hymenoptera Research 84: 271-282, DOI: http://dx.doi.org/10.3897/jhr.84.65238, URL: http://dx.doi.org/10.3897/jhr.84.65238
FAFD38B0F7DF508DB98728925FC99EBF.taxon	etymology	Etymology. From Latin venustus - pretty, nice, fine, which means that the described specimen has a fine general appearance.	en	Radchenko, Alexander G., Proshchalykin, Maxim Yu. (2021): New extinct ant genus (Hymenoptera, Formicidae, Myrmicinae) from late Eocene Rovno amber. Journal of Hymenoptera Research 84: 271-282, DOI: http://dx.doi.org/10.3897/jhr.84.65238, URL: http://dx.doi.org/10.3897/jhr.84.65238
