Chorebus (Stiphrocera) ilvus, Papp, 2009

Papp, J., 2009, Braconidae (Hymenoptera) From Korea Xxiii. Subfamilies Agathidinae And Alysiinae, Acta Zoologica Academiae Scientiarum Hungaricae 55 (3), pp. 235-261 : 249-251

Chorebus (Stiphrocera) ilvus sp. n. f

(Figs 64–73)

Material examined (2 ff) – Female holotype : Korea, prov. Ryang , Chann-pay plateau, Sam-zi-yan, 1700 m, 24–25 July 1975, leg. J. PAPP et A. VOJNITS (loc. no. 289). One female paratype : Korea, ( Mt. ) Pektu san, lakeshore before Sam-zi-yan Hotel, swept from grass, 19 July 1977, leg. O. DELY et Á. DRASKOVITS (loc. no. 376). – Holotype and paratype are in good condition: (1) glued on a pointed card by their mesosternum and hind coxae, (2) right fore wing of the holotype slightly creased, (3) left fore tarsomeres 4–5 glued separately close below trochanters of left middle leg. Holotype and paratype are deposited in the Hungarian Natural History Museum (Department of Zoology), Budapest, Hym. Typ. Nos 11386 (holotype) and 11387 (paratype) .

Etymology – The new species received the phantasy name “ilvus ”.

Description of the female holotype. – Body 2.2 mm long. Antenna 1.6 times longer than body and with 35 antennomeres. First flagellomere five times and penultimate flagellomere twice as long as broad. – Head in dorsal view transverse (Fig. 64), 1.6 times as broad as long, eye somewhat longer than temple, temple slightly swollen, occiput excavated. Eye in lateral view 1.8 times as high as wide and as wide as temple, temple beyond eye evenly wide (Fig. 65, see arrows). Mandible broad, somewhat longer than broad between upper and lower teeth, second tooth less large (Fig. 66). Head polished.

Mesosoma in lateral view 1.4 times as long as high, polished. Notaulix indistinct. Prescutellar dimple shallow and narrow linearform. Precoxal sulcus narrow, deep, finely crenualted (Fig. 67). Propodeum pubescent, metapleural rosette formed by pubescence; propodeum densely rugose. – Hind femur 4.1 times as long as broad distally, less thick (Fig. 68). Hind tibia as long as tarsus.

Fore wing somewhat longer than body. Pterostigma ten times as long as wide, parallel-sided and r somewhat longer than width of pterostigma; 1– R 1 half as long as length of pterostigma (Fig. 69, see arrows), 3–SR + SR1 ending before tip of wing. First discoidal cell closed, i.e vein CU1b sclerotized.

First tergite (Fig 70) 1.3 times as long as broad behind and evenly broadening posteriorly, pair of basal keels meeting before middle of tergite, tergite hairy and at hind with tuft of hairs; tergite rugose with much striate elements. Further tergites polished. Hypopygium large and pointed, ovipositor sheath as long as hind basitarsus, i.e. projecting upwards beyond end of metasoma (Fig. 71).

Scape, pedicel and flagellomeres 1–2 brownish yellow, flagellum dark brown. Body brownish black, metasoma with feeble rusty suffusion. Mandible deep yellow, palpi pale yellow, tegula and parategula brownish yellow. Legs yellow, coxae vivid yellow, telotarsi brown. Wings subhyaline, ptersotigma and veins light brown.

Description of the female paratype. – Similar to the female holotype. Body 2 mm long. Right antenna with 33 and left antenna with 34 antennomeres. Vein r almost twice longer than width of Figs 64–77. 64–73. Chorebus (Stiphrocera) ilvus sp. n.: 64 (64–71: holotype, 72–73: paratype): 64 = head in dorsal view, 65 = head in lateral view, 66 = mandible, 67 = lower half of mesopleuron, 68 = hind femur, 69 = distal part of right fore wing, 70 = first tergite, 71 = hind end of female metasoma, 72 = proximal part of pterostigma and r, 73 = first tergite. — 74–77. C. (S.) fallax (NIXON) : 74 = first tergite, 75 = mandible, 76 = head in dorsal view, 77 = hind femur pterostigma (Fig. 72). Hind femur four times as long as broad distally. First tergite 1.6 times as long as broad behind (Fig. 73). Coxae yellow.

Male and host unknown.

Distribution: Korea.

The new species, Chorebus (Stiphrocera) ilvus , is nearest to Ch. (St.) fallax (NIXON) ( NIXON 1937: 45, TOBIAS 1986: 189) viewing their common features as the swollen temple and ovipositor sheath projecting beyond end of metasoma; the two species are distinguished by the following features:

1 (2) First tergite beyond pair of spiracles parallel-sided, rugose with distinct striate elements (Fig. 74). Mandible 1.3–1.7 times longer than broad between upper and lower teeth (Fig. 75). Eye in dorsal view shorter than temple, latter somewhat more swollen (Fig. 76). Hind femur thick, 3.8 times as long as broad distally (Fig. 77). Hind coxa brownish. Body strong, f: 2.7–3 mm. – England, Sweden, Germany, Hungary

C. (S.) fallax ( NIXON, 1937)

2 (1) First tergite evenly broadening posteriorly, rugose with less distinct striate elements (Fig. 70). Mandible broad, somewhat longer than broad between upper and lower teeth (Fig. 66). Eye in dorsal view longer than temple, latter less swollen (Fig. 64). Hind femur less thick, 4.1 times as long as broad distally (Fig. 68). Hind coxa vivid yellow. Body gracile, f: 2–2.2 mm. – Korea C. (S.) ilvus sp. n.