Magadanobracon rasnitsyni, Belokobylskij, 2012

Belokobylskij, Sergey A., 2012, Cretaceous braconid wasps from the Magadan Province of Russia, Acta Palaeontologica Polonica 57 (2), pp. 351-361 : 354

publication ID	https://doi.org/ 10.4202/app.2010.0120
persistent identifier	https://treatment.plazi.org/id/0391878B-0355-5E12-1F49-8F28FA12A610
treatment provided by	Felipe
scientific name	Magadanobracon rasnitsyni
status	sp. nov.

Treatment

Magadanobracon rasnitsyni sp. nov.

Figs. 1 View Fig , 2 View Fig .

Etymology: Dedicated to Alexandr Pavlovich Rasnitsyn, famous Russian palaeoentomologist and evolutionist, in honour of his 75−year jubilee.

Holotype: Female, PIN, 3901/77 (part and counterpart); wasp well preserved excepting posterior part of the hind wings.

Type locality: Obeshchayushchiy fossil site, Magadan Province, Russia.

Type horizon: Cenomanian, Late Cretaceous , 99.6±0.9–93.5 ±0.8 Myr, tuffaceous mudstone of the lacustrine Ola Formation.

Description.—Female. Body length 4.5 mm; metasoma 2.3 mm; fore wing 3.2 mm, ovipositor 1.4 mm.

Head: More or less transverse, about 1.5 times wider than its median length. Scape about 1.3 times longer than wide. First flagellar segment 2.4 times longer than maximum width, 1.2 times longer than second segment. Penultimate segment about twice longer than maximum width, 0.5 times as long as first segment, almost as long as apical segment.

Mesosoma: 1.3 times longer than its maximum width, 0.45 times as long as fore wing.

Fore wing: Length 2.7 times longer than maximum width. Costal vein (C+SC+R) thick, with rather distinct suture separated fused costal (C) and subcostal (SC) veins. Pterostigma subtriangular, 2.7 times longer than maximum width. Radial (marginal) cell wide, pointed apically, 2.7 times longer than maximum width. Metacarp (1−R1) 1.1 times longer than pterostigma. Radial vein (r) arising behind middle of pterostigma, distance from radial vein (r) to apex of pterostigma along its inner side about 0.8 times as long as distance from vein to base of pterostigma. First radial abscissa (r) 0.45 times as long as maximum width of pterostigma, forming almost straight line with second abscissa (3−SR). Second radial abscissa (3−SR) 2.4 times longer than first abscissa (r), 0.35 times as long as the straight third abscissa (SR1), 0.75 times as long as first radiomedial vein (2−SR), and 1.5 times longer than second radiomedial vein (r−m). Second radiomedial (submarginal) cell 1.7 times longer than maximum width, 1.2 times longer than brachial (subdiscal) cell. Recurrent vein (m−cu) 4.0 times longer than third medial abscissa (2−SR+M), 0.5 times as long as first radiomedial vein (2−SR), 0.55 times as long as second (posterior) abscissa of basal vein (1−M). Discoidal (discal) cell 1.4 times longer than width. Nervulus (cu−a) distinctly inclivous, distance from nervulus (cu−a) to basal vein (1−M) 0.3 times as long as nervulus length. Brachial (subdiscal) cell 2.5 times longer than its maximum width. Mediocubital vein (M+CU1) straight.

Legs: Fore femur about 3.0 times longer than wide. Median tibia weakly thickened. Hind femur 2.7 times longer than its maximum width. Hind tibia distinctly thickened, about 5.0 times longer than its maximum width, 1.4 times longer than hind femur, almost as long as hind tarsus.

Metasoma: First tergite wide, almost linearly widened towards apex, with rather distinct spiracular tubercles in basal 0.3. Apical width of tergite 1.3 times its width at level of tubercles, about 2.5 times its basal width; length of tergite about 0.7 times its apical width. Second tergite possibly smooth, rather short, 0.9 times as long as apical width of first tergite, 1.5 times longer than smooth third tergite. Ovipositor 0.65 times as long as metasoma, 0.85 times as long as mesosoma, 0.4 times as long as fore wing.

Colour: Body black. Fore and middle legs entirely, hind tibia in basal half and hind tarsus entirely yellowish brown. Fore wing hyaline. Pterostigma entirely and all veins brown.