Bracon (Bracon) selviae, Beyarslan, Ahmet, 2016

Beyarslan, Ahmet, 2016, Taxonomic investigations on the Braconinae fauna (Hymenoptera, Braconidae) in north-eastern Anatolian region, Turkey, with the description of a new species, Zootaxa 4079 (1), pp. 1-33 : 8-10

Bracon (Bracon) selviae sp. n.

( Figs. 2—9 )

Description. Female (holotype). Length of body 3.8 mm, antennae 3.4 mm, fore wing 3.6 mm, hind wing 3.0 mm, hind leg 3.4 mm, mesosoma 1.25 mm, metasoma 1.7 mm, ovipositor sheath 1.0 mm ( Fig. 2 ).

Head. Transverse, ratios of width: length: height of head = 14: 9: 14 ( Figs 3, 4 ). Antenna with 31 segments, first flagellomere 2.3 times longer than its width and as long as second flagellomere, penultimate antennal segment 1.75 as long as its width ( Fig. 5 ). Width of the hypoclypeal depression 0.38 times longitudinal diameter of eye and 0.8 times length of malar space; longitudinal diameter of eye 1.2 times longer than its transverse diameter; ratios of height of clypeus: inter-tentorial distance: tenterio-oculardistance = 5: 25: 9; length of maxillary palp 0.9 times height of head; width of face 1.3 times its height, face microsculptured and shiny, white setae; height of eye: width of face: width of head= 29: 30: 52; vertex and frons smooth and glabrous with some white setae; length of eye 2.0 times as long as temple in dorsal view; ratios of OOL: OD: POL = 15: 3: 4; basal part of mandible microsculptured; temple smooth, shiny; length of malar space 2.0 times as long as basal width of mandible and 0.4 times longitudinal diameter of eye.

Mesosoma ( Fig. 6 ). Mesosoma approximately 1.6 times longer than height; pronotum and propleuron, smooth; mesoscutum smooth, glabrous, with silvery setae; notauli very weak developed; scutellar sulcus smooth, scutellum compressed, smooth and shiny; flange of metapleuron distinctly developed; metanotum smooth, shiny; surface of propodeum in mid longitudinally scultured and with sparse silvery setae laterally.

Fore wing ( Fig. 7 ). Pterostigma almost triangular, length of pterostigma 3.4 times its maximum width, vein 1- SR+M slightly bent and 2.2 times as long as length of m-cu; vein cu-a interstitial; ratio of r: 3-SR: SR1 = 10: 25: 50; CUlb short, 3-CU1 2.0 times as long as CUlb and 0.66 times as long as m-cu; ratios of 2- SR: 3-SR: r-m: 2-M: 2-SR+M= 20: 25: 11: 40: 5.

Hind wing ( Fig. 8 ). Ratios of cu-a: M+Cu: 1-M: 1r-m: 2-SC+R: SC+R1= 10: 15: 50: 12: 5: 19; apex of C+SC+R with a row of bristles.

Legs ( Fig. 9 ). Hind coxa smooth, with long, whitish setae; femur weakly compressed; ratios of femur: tibia: basitarsus of hind leg = 40: 60: 23; length of femur, tibia and basitarsus of hind leg 3.4, 9.0 and 5.0 times their maximum width, respectively; length of hind tibial spurs 0.4 and 0.5 times hind basitarsus; length of longer fore tibial spurs 0.5 basitarsus; tibia and tarsus densely setose.

Metasoma. Length of first tergite 0.8 times its apical width and sculptured; Second tergite sculptured, medial length of second tergite 0.4 times as long as its apical length and as long as medial length of third tergite; suture between 2nd and 3rd metasomal tergites deep and sinuate; remaining tergites smooth. Ovipositor sheath 0.58 times as long as metasomal length.

Colour. Black; only mandibula, palpis labialis, palis maxillaries, fore legs completely black, middle and hind legs (coxae and middle part of the femura red) yellow red;; wing membrane hyaline; pterostigma and veins yellow, only outer edge of pterostigma black.

Male: Similar to female.

Material examined. Holotype: Female—Trabzon-Maçka, Şomla Yaylası, (euxin provice with Abies nordmanniana, Rhododendron sp., grassland area; 40051′36"N, 39032′39"E), 1677 m. 0 6.08.2005, AB., 1♀.

Paratypes: Erzurum-İspir-Çamlıkaya Ormanları, (Anatolian steppe province with Salix sp., Quercus sp., Ulmus sp., creek edge grasslands; (40°37'49"N, 41°10'52"E), 950 m. AB., 1♀. Ardahan-Göle-Yiğitkonağı köyü, (Subeuxin with wild grass, (40°56'47"N, 42°34'53"E), 1993 m. 22.06.2012, MY., 1♀. Ardahan-Çıldır, (41°7'47"N, 42°54'32"E), Eskibeyrehatun, (Anatolian steppe province with Anthemis sp., reeds, grassland; (41°7'47"N, 42°54'32"E), 1952 m. 22.08.ÖŞ., 1♀.

Allotype: Kars-Sarıkamış-Büyükkumru, (Anatolian steppe province with Pinus sylvestris , wild grass; (40°25'05"N, 42°28'13"E), 2400 m. 25.06.2013, AB., 1♂.

Etymology. Named in honour of Turkey’s young mathematician Ms. Selvi Kara Beyarslan.

Differential diagnosis. Bracon (Bracon) salviae sp. n. is related to B. (B.) exhilarator Nees, 1834 .

The two species are separated by the combination of the following characters:

1 (2) Mesosoma approximately 1.6 times longer than height; propodeum, first and second metasomal tergites sculptured, 2-SR 2 times as long as m-cu, body 3.8 mm ............................................... Bracon (Bracon) salviae sp. n.

1 (2) Mesosoma 2 times as long as its height; propodeum and first metasomal tergite smooth; second metasomal tergite rugose, folds longituninal; 2-SR 1.4 times as long as m-cu, body 2.3–3.6 mm ..................... Bracon (Bracon) exhilarator Nees.

Figures

FIGURES 2 – 9. Bracon (Bracon) salviae sp. n. 2 — Habitus, 3 — head in lateral, 4 — head in frontal view, 5 — antenna, 6 — mesosoma in lateral view; 7 — fore wing, 8 — hind wing, 9 — hind leg.