Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 92. (Budapest 2000)

Papp, J.: First synopsis of the species of obscurator species-group, genus Bracon, subgenus Glabrobracon (Hymenoptera: Braconidae, Braconinae)

Bracon (Glabrobracon) arcuatus THOMSON, (Figs 9-13) Bracon arcuatus THOMSON, 1894: 1827 $, type locality: Öland Sweden, female lectotype in Zoological Museum of University, Lund; examined. Bracon (Orthobracon) arcuatus: PAPP 1969: 189 $ (designation of the lectotype, redescription). -SHENEFELT 1978: 1628 (literature up to 1974). Specific features of the females (11 $) - Body (2-)2.5-3 mm long. Antenna somewhat shorter than body and with 22-27', usually 23-24, antennomeres. Penultimate fiagellomcrc 1.3-1.4 times as long as broad. Head in dorsal view (Fig. 9) 1.8-1.9 times as broad as long, eye twice as long as temple, latter receded. Horizontal diameter of oral opening somewhat longer than shortest distance between opening and eye. Head polished, face laterally finely granulate. - Propodeum either (almost) entirely polished or more or less rugo-rugulose posteriorly above lunule or lunule issuing a carina of variable length and along carina narrowly rugulose (Fig. 10). Hind femur 3-3.5 times as long as broad medially (Fig. 11).- Pterostigma (Fig. 12) 2.8-3 times as long as wide and issuing r either from its middle or just distally from its middle. Second submarginal cell short, 3-SR somewhat longer than (less frequently as long as) 2-SR, 4-SR approaching tip of wing. - First tergite (Fig. 13) quadrate in form, i.e. as long as broad or at least slightly longer than broad behind, beyond pair of spiracles sides of tergite either parallel or more or less diverging posteriorly; scutum posteriorly and lateral rim of tergite as well as second tergite antero-medially rugo-rugulose; further tergites polished. Tergites 2-3 equal in length (rarely second tergite just longer); suture between tergites 2-3 straight, subcrenulate and medially frequently somewhat pointed anteriorly. Ovipositor sheath as long as hind femur + basitarsus combined. - Body black or brownish black. Mandible and palpi brownish yellow. Orbit above rusty. Tegula dark brown (rarely brownish yellow). Hind rim of tergites 3-4 frequently brownish. Legs dark brown to black(ish), fore tibia entirely, tibiae 2-3 basally brownish yellow, tarsi brownish. Wings hyaline to subhyaline. Pterostigma brownish, veins opaque brown. Specific features of the males (2 cS) - Similar to the female. Body 2 mm long. Antena about one-fourth longer than body and with 23-24 antennomeres. Lunule of propodeum issuing a short Figs 9-13. Bracon (Glabrobracon) arcuatus THOMSON: 9 = head in dorsal view, 10 = propodeum, 11 = hind femur, 12 = distal part of right fore wing, 13 = tergites 1-3