Chorebus (Stiphrocera) monfreya, Papp, 2005

Papp, J., 2005, Braconidae (Hymenoptera) From Mongolia, Xvi. Subfamilies Gnamptodontinae, Brachistinae, Euphorinae, Alysiinae, Acta Zoologica Academiae Scientiarum Hungaricae 51 (3), pp. 221-251 : 236-239

Chorebus (Stiphrocera) monfreya sp. n. f

( Figs 43–49 )

Material examined (1 f). – Female holotype: Mongolia, Mittelgobi aimak, Delgerchangaj ul, 6 km S von Somon Delgerchangaj, 1650 m, 11 Juli 1967, leg. Z. KASZAB (loc. no. 908) .

Holotype is deposited in the Hungarian Natural History Museum ( Department of Zoology ), Budapest, Hym. Typ. No. 10724.

Holotype is in fairly good condition: right fore and middle legs less visible owing to their mounting, left pair of wings creased. Specimen glued on a pointed card by its right mesopleuron.

Etymology. – The name ( “monfreya ”) of the new species indicates its close relationship to Ch. freya , the prenom “mon” refers to its Mongolian origin.

Description of the female holotype. – Body 1.3 mm long. Antenna as long as body and with 17 antennomeres. First flagellomere 3.5 times, middle ones clearly twice and penultimate flagellomere just twice as long as broad. – Head in dorsal view ( Fig. 43 ) transverse, 1.87 times as broad as long, eye as long as temple, occiput excavated. Ocelli small, elliptic, far from each other, OOL twice as long as POL. Head almost 1.6 times broader than mesoscutum between tegulae. Eye in lateral view twice as high as wide, temple beyond eye 1.5 times as wide as eye ( Fig. 44 , see arrows). Mandible one-fifth longer than broad between upper and lower teeth, teeth less strong ( Fig. 45 ). Tentorial pit not reaching eye. Occiput with disperse hairs. Head polished.

Mesosoma in lateral view stout. 1.25 times as long as high, polished. Pronotum bald, pronope invisible (owing to mounting). Precoxal suture missing. Mesoscutum hairy on its anterior declivous part, otherwise bald. Propodeum polished, less hairy, above lunule strio-rugulose ( Fig. 46 ). the sculpture, 51 = head in dorsal view, 52 = distal part of right fore wing Metapleuron densely hairy. – Hind femur five times as long as broad distally. Hind tibia and tarsus equal in length.

Fore wing one-fourth longer than body. Pterostigma ( Fig. 47 ) wide and parallel-sided, 5.5 times as long as wide, 1–R1 0.42 times as long as pterostigma; r issuing near from its base and shorter than width of pterostigma; 3–SR + SR1 bent and ending far before tip of wing. Subdiscal cell closed distally ( Fig. 48 ).

First tergite ( Fig. 49 ) strongly and evenly broadening posteriorly, just longer than broad behind, pair of spiracles beyond middle of tergite, hind two-thirds of scutum rather longitudinally striate, laterally from scutum tergite rugo-rugulose. Third tergite somewhat longer than second tergite, together with further tergites polished. Ovipositor sheath very short and concealed.

Body black. Antenna blackish, scape with very weak rusty tint. Mandible dark rusty, palpi brownish. Tegula + parategula brown. Coxae black, legs blackish, femora apically and tibiae basally very faintly brownish. Wings hyaline, pterostigma and veins opaque brownish.

Male and host unknown.

Distribution: Mongolia.

The new species, Chorebus (Stiphrocera) monfreya , is nearest to Ch. (S.) freya (NIXON) considering their common features as blackish to black coloured body, short corporal length and small number of antennomeres (17 to 21); the two species are distinguished by a few features keyed:

1 (2) First tergite less broadening posteriorly, 1.3–1.5 times as long as broad behind, scutum rugulose ( Fig. 50 ). Temple in dorsal view swollen, eye shorter than temple ( Fig. 51 ). Pterostigma cuneiform, 1–R1 half as long as pterostigma ( Fig. 52 ). f: 1.4 mm. – Sweden, Poland, Hungary

Ch. (S.) freya ( NIXON, 1943)

2 (1) First tergite more broadening posteriorly, just longer than broad behind,

scutum finely striate ( Fig. 49 ). Temple in dorsal view just swollen, eye and temple equal in length ( Fig. 39 ). Pterostigma with parallel sides, 1–R1 less than half as long as pterostigma ( Fig. 47 ). f: 1.3 mm. – Mongolia

Ch.(S.) monfreya sp. n.

Considering the antenna with 17 antennomeres Ch. monfreya runs to Ch. microsoma TOBIAS with the help of the key to Chorebus species by TOBIAS (1998: 354–410), the two species are separated by the following features:

1 (2) First tergite twice as long as broad behind. Ovipositor sheath long, as long as basitarsus of hind leg. Middle flagellomeres 1.5 times as long as broad. Middle lobe of mesoscutum hairy. Basal half of flagellum yellowish brown, tergites 2–3 yellow. f: 1.1 mm. – Asiatic Russia (Far East Maritime Territory)

Ch. (S.) microsoma TOBIAS, 1998 2 (1) First tergite just longer than broad behind ( Fig. 49 ). Ovipositor sheath very short, concealed. Middle flagellomeres twice as long as broad. Middle lobe of mesoscutum bald, mesoscutum hairy only on its declivous fore part. Flagellum and tergites 2–3 black. f: 1.3 mm. – Mongolia

Ch. (S.) monfreya sp. n.

Figures

Figs 39–52. 39. Chorebus (Stiphrocera) detorqus sp. n.: head in dorsal view. – 40–42. Ch. (S.) lissopleuris TOBIAS: 40 = head in frontal view, 41 = head in dorsal view, 42 = first tergite. – 43–49. Ch. (S.) monfreya sp. n.: 43 = head in dorsal view, 44 = head in latertal view, 45 = mandible, 46 = propodeum, 47 = distal part of right fore wing, 48 = subdiscal cell of fore wing, 49 = tergites 1–3 with detail of the sculpture of first tergite. – 50–52. Ch. (S.) freya (Nixon): 50 = first tergite with detail of