Bracon (Bracon) albion continentalis, Samartsev & Ku, 2021

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) albion continentalis ssp. nov.

Figs 11-21 , A1

Type material.

Holotype. South Korea - Gyeongsangbuk-do • female; Seongju-gun, [47] Suryun-myeon, Bongyang-ri; 9 Jun. 1992; D.-S. Ku leg.; NIBR 344.

Paratypes. (2 females). South Korea - Chungcheongbuk-do • 1 female; Jecheon-si, [55] Geumseong-myeon, Seongnae-ri; 10 Jun. 1992; D.-S. Ku leg.; SMNE 331. - Gyeongsangnam-do • 1 female; Geochang-gun, [65] Geochang-eup, Songjeong-ri; 35.6712, 127.8850; 3 Jun. 2019; K. Samartsev leg.; forest on a mountain, sweeping; ZISP B0058.

Additional material.

Denmark • 1 female (paratype of B. albion albion Papp, 1999); Jutland , NE of Ribe, Haslund Krat; 13 Jul. 1987; T. Munk leg.; HNHM 153315 .

Russia - Novgorod Province • 1 female; Pestovskiy District, 20 km NW of Pestovo, Tychkino ; 6 Jul. 1986; V.I. Tobias leg.; ZISP • 2 females; same data as for preceding; 29 Jul. 1990; ZISP B0078, B0079 .

Etymology.

The name Bracon albion continentalis is formed from Latin noun continens indicating the wide distribution of the subspecies across the continental part of Palaearctic in contrast with the island distribution of the nominative subspecies.

Description.

Female. Body length 3.5-3.8 mm (Russian non-type specimens: 2.8-3.2 mm); fore wing length 3.2-3.6 mm (2.9-3.2 mm).

Head. Width of head (dorsal view) 1.6-1.8 × (1.8-1.9 ×) its median length. Transverse diameter of eye (dorsal view) 1.8-1.9 × (1.9-2.0 ×) longer than temple. Eyes with sparse, short setae. OOL 2.4-2.6 × (2.2 ×) Od; POL 1.1-1.2 × (1.2-1.4 ×) Od; OOL 2.0-2.3 × (1.6-1.7 ×) POL. Frons with deep medio-longitudinal groove. Longitudinal diameter of eye (lateral view) 1.4-1.5 × its transverse diameter. Transverse diameter of eye (lateral view) 2.0-2.2 × (2.3-2.4 ×) longer than minimum width of temple, hind margins of eye and temple subparallel to broadened downwards. Face width 1.7-1.9 × combined height of face and clypeus; 2.2-2.3 × width of hypoclypeal depression. Longitudinal diameter of eye 2.4-2.7 × (2.3-2.4 ×) longer than malar space (anterior view); malar space 0.75-0.90 × basal width of mandible. Malar suture absent. Width of hypoclypeal depression 1.3 × distance from depression to eye. Clypeus prominent, its height about 0.33 × (0.25 ×) width of hypoclypeal depression. Maxillary palp longer than eye, but shorter than head.

Antenna 0.75-0.90 × as long as fore wing, with 29 antennomeres. First, middle, and penultimate flagellomeres 1.4-1.7 × (1.5-1.8 ×), 1.3-1.5 × (1.2-1.3 ×), and 1.5-1.7 × longer than wide, respectively.

Mesosoma 1.6 × (1.6-1.7 ×) longer than its maximum height. Transverse pronotal sulcus deep, smooth or weakly crenulate. Notauli impressed anteriorly, shallow and not united posteriorly. Mesoscutum with setae only on notaulic area. Scutellar sulcus crenulate. Mesepimeral sulcus smooth (weakly crenulate), mesopleural pit deep, separated from mesepimeral sulcus. Metapleural sulcus smooth or weakly crenulate (crenulate). Propodeal spiracle round, located in middle of propodeum. Propodeum with branching medio-longitudinal keel in apical half (complete).

Wings. Fore wing 0.92-0.95 × as long as body. Pterostigma 2.8-3.3 × longer than wide. Vein r arising from basal 0.50-0.55 × (0.45-0.50 ×) of pterostigma. Vein 1-R1 1.4-1.5 × (1.6-1.7 ×) longer than pterostigma. Marginal cell 8-10 × longer than distance from its apex to apex of wing. Vein 3-SR 2.1-2.7 × vein r, 0.55-0.65 × vein SR1, 1.2-1.5 × vein 2-SR. Vein 1-M 0.67-0.70 × vein 1-SR+M, 1.5-1.8 × vein m-cu, 2.0-2.2 × vein cu-a. Vein 2-SR+M 0.10-0.25 × vein 2-SR, 0.2-0.4 × vein m-cu. Vein 1-CU1 (posterior margin of discal cell) 2.4-2.7 × (2.7-3.6 ×) vein cu-a. Vein cu-a antefurcal or interstitial. Vein 2-1A of hind wing absent or very short.

Legs. Fore tibia with longitudinal and transverse apical rows of thick setae. Hind femur 2.4-2.5 × longer than wide. Hind tibia 1.5-1.6 × longer than hind femur, without subapical row of thick setae, its inner spur about 0.6 × (0.65-0.75 ×) as long as hind basitarsus. Hind tarsus 0.85-0.90 × as long as hind tibia. Fifth segment (without pretarsus) of hind tarsus 1.9-2.1 × (1.8-1.9 ×) longer than second segment and 1.2-1.3 × longer than hind basitarsus. Claws with rectangular (acute angularly protruding) basal lobe.

Metasoma 1.2-1.5 × longer than mesosoma. First metasomal tergite with more or less developed dorsolateral carinae composed of multiple rugae and with lateral carinae, its median length 0.80-0.85 × its apical width; median area separated by rugate furrow. Second tergite with weak, very short, and narrow triangular median area and weakly impressed dorsolateral impressions, medially 0.75-0.95 × as long as third tergite and 0.70-0.75 × (0.75-0.85 ×) as large as apical width of first tergite. Basal width of second metasomal tergite 1.8-2.1 × (1.6-1.7 ×) its median length. Suture between second and third tergites weak laterally, medially deep, weakly curved and crenulate. Apical margins of third to sixth tergites thin, without transverse subapical grooves. Ovipositor sheath 0.75-0.85 × as long as hind tibia and 0.20-0.25 × as long as fore wing. Apex of ovipositor with weak nodus and developed ventral serration.

Sculpture. Face (almost) smooth (weakly granulate); malar space granulate; frons weakly granulate. Mesosoma mostly smooth; metanotum smooth with rugae on margins; propodeum smooth (granulate-rugulose posteriorly) with tree-like rugosity in apical half. First tergite laterally rugulose, its median area posteriorly obliquely rugulose to rugose; second metasomal tergite longitudinally rugose medially, laterally granulate-rugulose; third and posterior tergites (almost) smooth.

Colour. Body mostly black; legs rusty brown, coxae black, middle and hind femora basally dark brown, or all legs entirely, except for brownish coxae and tarsi, brownish yellow; ventral side of metasoma anteriorly yellowish brown, or metasoma mostly brownish yellow, medio-longitudinally brown; maxillary palps brownish yellow or pale yellow; wing membrane weakly brownish darkened, pterostigma and wing veins brown.

Male. Unknown.

Distribution.

Europe: Northern Europe (Denmark: Papp 1999, as B. albion ). South Korea. Russia: European part: Novgorod Province, Saratov Province ( Samartsev 2013, as B. albion ).

Diagnosis.

The new subspecies differs from B. albion albion Papp by the extremely short basitarsus and enlarged fifth segment of the hind leg (Fig. 20 ). In addition, the Korean specimens of B. albion continentalis ssp. nov. have less thickened antennae (Fig. 11 ), more coarsely (with distinct longitudinal rugae) sculptured second metasomal tergite (Fig. 19 ), and almost smooth face (Fig. 14 ; weakly granulate in the European specimens).

Figures

Figures 11 - 21. Bracon (Bracon) albion continentalis ssp. nov. (holotype, female, NIBR) 11 habitus, lateral view 12 wings 13 head and mesoscutum, dorsal view 14 head, ventrolateral view 15 head, anterior view 16 head, lateral view 17 mesosoma, lateral view 18 propodeum, dorsal view 19 metasoma, dorsal view 20 hind tarsus and ovipositor 21 first metasomal tergite, dorsal view. Scale bars: 0.5 mm (13 - 21); 1 mm (11, 12).

Figures A 1 - A 4. Collecting localities of the material on the species new to South Korea. Point numbers correspond with numbers in brackets in text.