Bracon (Bracon) subcylindricus Wesmael, 1838

Samartsev, Konstantin & Ku, Deok-Seo, 2021, New records of Braconinae (Hymenoptera, Braconidae) from South Korea, Journal of Hymenoptera Research 83, pp. 21-72 : 21

Bracon (Bracon) subcylindricus Wesmael, 1838

Figs 55-57 , A5

Material.

South Korea (3 females, 7 males). - Gangwon-do • 1 female ; Goseong-gun, [2] Ganseong-eup ; 25 May 1993; D.-S. Ku leg.; NIBR 407 • 4 males ; same data as for preceding; SMNE 408-411 • 1 female ; Goseong-gun, [3] Geojin-eup, Naengcheon-ri , Geonbongsa Temple ; 25 May 1993; D.-S. Ku leg.; ZISP 412 • 2 males ; Chuncheon-si, [11] Dongsan-myeon, Joyang-ri , Joyang bridge; 24 May 1994; D.-S. Ku leg.; SMNE 414, 415 • 1 male ; Pyeongchang-gun, [14] Jinbu-myeon, Dongsan-ri , Odaesan Mountain ; 27 May 1993; D.-S. Ku leg.; SMNE 413. - Chungcheongnam-do • 1 female ; Yesan-gun, [51] Deoksan-myeon, Sudeoksa Temple ; 11 Aug. 1991; D.-S. Ku leg.; ZISP 406 .

Additional material.

Astrakhan Province • 2 females; Kamyzyaksky District , Astrakhan Nature Reserve, Damchiksky section; 19 Jul. 1974; V.V. Kostyukov leg.; Phragmites, Typha, Carex; ZISP A0057, A0058 • 1 female; same locality as for preceding; 21 Jul. 1974; V.V. Kostyukov leg.; Phragmites; ZISP A0059 • 1 female; Astrakhan , Gorodskoy Island; 26 Jun. 2004; S.A. Belokobylskij leg.; wet and dry meadows, forest; ZISP A0056 .

Chechen Republic • 2 females (lectotype and paralectotype of Bracon kiritshenkoi Telenga, 1936); Kizlyar District , Starogladovskaya; 8 Jul. 1927; A.N. Kiritshenko leg.; ZISP .

Volgograd Province • 1 female; Pallasovskiy District , Lake Elton; 16 Jun. 2004; A.I. Khalaim leg.; Khara River, steppe; ZISP A0055 .

Distribution.

Caucasus. Europe: Eastern, Northern, Southern, and Western Europe. Iran. Kazakhstan. Russia: European part ( Samartsev 2019); Ural. South Korea (new record). Turkey.

Description.

Female. Fore wing length 3.0-4.8 mm. Width of head (dorsal view) 1.6-1.8 × its median length. Transverse diameter of eye (dorsal view) 1.2-1.7 × longer than temple. OOL 2.5-3.3 × Od; POL 1.3-1.8 × Od; OOL 1.8-2.1 × POL. Longitudinal diameter of eye (lateral view) 1.4-1.6 × its transverse diameter; hind margins of eye and temple subparallel to broadened downwards. Face width 1.6-1.7 × combined height of face and clypeus. Longitudinal diameter of eye 2.4-2.9 × longer than malar space (anterior view). Malar suture absent. Width of hypoclypeal depression 1.0-1.5 × larger than distance from depression to eye. Antenna 1.1-1.2 × longer than fore wing, with 33-43 antennomeres. First, middle and penultimate flagellomeres 1.7-2.1 ×, 1.3-1.7 ×, and 1.6-2.1 × longer than wide, respectively. Mesosoma 1.7-1.9 × longer than its maximum height. Mesoscutum setose only on notaulic area. Notauli deep anteriorly, shallow and united posteriorly. Mesepimeral and metapleural sulci (weakly) crenulate. Medio-longitudinal keel on propodeum complete, with transverse rugae. Fore wing 0.8-1.0 × as long as body. Pterostigma 2.7-3.7 × longer than wide; vein r arising from basal 0.45-0.55 × of pterostigma; vein 1-R1 1.4-1.7 × longer than pterostigma. Marginal cell 6-12 × longer than distance from its apex to apex of wing; vein 3-SR 2.2-3.4 × vein r, 0.60-0.85 × vein SR1, 1.3-1.6 × vein 2-SR. Hind femur 2.9-3.4 × longer than wide. Hind tibia with subapical transverse row of thick setae. Fifth segment of hind tarsus 0.5-0.7 × as long as hind basitarsus, 0.95-1.15 × as long as second segment. Claws with small not protruding ventrally basal lobe. First metasomal tergite with complete or incomplete dorsal carina and developed dorsolateral carinae, its median length 0.7-0.8 × its apical width. Metasoma 0.29-1.49 × as long as mesosoma. Median length of first tergite. Second tergite without distinct median area and with shallow s-shaped weakly crenulate dorsolateral impressions not bordered by carinae; medially 0.9-1.1 × as long as third tergite, its basal width 1.6-1.8 × its median length. Second metasomal suture deep, curved and crenulate. Apical margins of third to sixth tergites more or less thick, without transverse subapical grooves. Ovipositor sheath 0.80-1.15 × as long as hind tibia, 0.25-0.35 × as long as fore wing. Apex of ovipositor with developed nodus and ventral serration. Body mainly smooth; face, frons, and malar space weakly granulate; propodeum posteriorly more or less rugose; first metasomal tergite posteriorly areolate-rugose; second tergite rugose to granulate-rugulose; third-sixth tergites with gradually weakening papillary-like sculpture. Coloration (Korean specimens): head, mesosoma and metasoma medio-longitudinally brownish black; tegula, legs, and lateral and ventral sides of metasoma reddish yellow; wing membrane more or less brownish darkened, pterostigma and wing veins brown.

Remarks.

The key to related species and the taxonomic history of B. subcylindricus had been published earlier ( Samartsev 2018, 2019).

Figures

Figures 55 - 67. Bracon (Bracon) subcylindricus Wesmael, 1838 (55 - 57 female, NIBR 58 female, ZISP) and B. (B.) terebralis Tobias, 2000 (59 - 63 holotype, female, ZISP) 55, 59 habitus, lateral view 56, 67 head, lateral view 57, 60 head, anterior view 58, 63 metasoma and propodeum, dorsal view 61 first metasomal tergite, dorsolateral view 62 head, dorsal view 64 hind tarsus 65 apex of ovipositor 66 apex of fore wing. Scale bars: 0.25 mm (60, 61, 65); 0.5 mm (56, 57, 62 - 64, 67); 1 mm (55, 59, 66).

Figures A 5 - A 8. Collecting localities of the material on the species new to South Korea. Point numbers correspond with numbers in brackets in text.