Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 91. (Budapest 1999)

Papp, J.: Five new Microchelonus species from the Neotropical Region (Hymenoptera, Braconidae: Cheloninae)

Carapace somewhat shorter than head and mesosoma combined; in dorsal view (Fig. 6) somewhat belly, 1.7 times as long as broad medially, apically faintly pointed; in lateral view 2.8 times as long as high behind and 1.3 times as high behind as basally (Fig. 7, see arrows within carapace); apico-laterally rather truncate (Fig. 7, see arrow outside carapace); apico-ventrally just incurved (Fig. 8, see arrow). Carapace antero-posteriorly alutaceous rugose to densely rugulose (Fig. 6). Ovipositor sheath short, concealed. Body black. Scape + pedicel reddish yellow, flagellomeres 1-2 darkening reddish yellow, rest of flagellum blackish. Palpi pale. Tcgula reddish yellow. Legs reddish yellow, hind coxa brown, distal half of hind tibia brownish fumous. Wings evenly subfumous, pterostigma brown, veins opaque brown. Description of the female paratype - Similar to the female holotype. Body 3.2 mm long. Carapace anteriorly rugose with longitudinal elements. Male and host unknown. Distribution - Argentina. Remarks - The new species, Microchelonus angustus sp. n., is nearest to M. constrictus sp. n. considering their reddish yellow legs and tegula, however, the two species are clearly separated by the features keyed: 1 (2) Pterostigma narrow (Fig. 5), 3.6 times as long as wide and issuing r distally from its middle. Flagellomeres 11-13 1.4 to 1.5 times as long as broad (Fig. 1). Temple in dorsal view rounded (Fig. 2). Carapace in dorsal view rather belly, 1.7 times as long as broad medially (Fig. 6). Scutellum with punctures. $: 3.1-3.2 mm M. angustus sp. n. 2 (1) Pterostigma wide (Fig. 29), 2.6 times as long as wide and issuing rfrom its middle. Flagellomeres 11-13 cubic (Fig. 27). Temple in dorsal view strongly rounded (Fig. 28). Carapace in dorsal view rather elongate, 1.8 times as long as broad medially (Fig. 30). Scutellum smooth. Ç: 3-3.3 mm M. constrictus sp. n. With the help of the key to the Microchelonus species of the Nearctic Region (McCOMB 1968: 4-14) the new species runs to M. bucculentus (McCOMB, 1968) (USA: South Dakota, Utah, Michigan). The two species are differentiated by the features keyed: 1 (2) Antenna conspicuously filiform, i.e. flagellomeres less broad than diameter of median ocellus, every flagellomere at least twice as long as broad. Temple in dorsal view bulging, i.e. head between temples broader than eyes. Carapace nearly parallel-sided, 0.45 times as broad as long; its basal pair of keels long, extending beyond middle of carapace. Legs blackish, wings dark fumous. Çd: 4 mm M. bucculentus (MCCOMB) 2(1) Antenna less filiform, i.e. flagellomeres broader than diameter of median ocellus, flagellomeres 11-13 1.5 to 1.4 times as long as broad. Temple in dorsal view rounded, i.e. head between temples not broader than between eyes (Fig. 2). Carapace somewhat belly (Fig. 6), 0.58 times as broad as long; its basal pair of keels less long, restricted to basal third of carapace. Legs reddish yellow, wings fumous. Ç: 3.1-3.2 mm M. angustus sp. n.