Chorebus (Stiphrocera) longulus, Papp, 2013

Papp, J., 2013, Dacnusines From Korea: New And Known Species (Hymenoptera: Braconidae: Alysiinae: Dacnusini), Acta Zoologica Academiae Scientiarum Hungaricae 59 (3), pp. 229-265 : 245-249

Chorebus (Stiphrocera) longulus sp. n.

(Figs 47–56, 64)

Type material (5 f + 1 m) – Female holotype: Korea, Kangwon, Mt. Solak Paekdamsa , 25 May 1993, leg. D.-S. Ku. 2 f paratypes: Korea, Kangwon, Taebaek Sangjangdong , 28 May 1993, leg. D.-S. Ku. 1 f paratype: Korea, Chungnam, Komsan Nami Posoka , 22 May 1993, leg. D.-S. Ku. 1 f paratype: Korea, Kyosongbuk, Bonghwa Sokpo Sokpo , 28 May 1993, leg. D.-S. Ku. 1 m paratype: Korea, Kyongbuk, Andong Peongeon, Kangdong-ri , taken by sweeping, 10 May 1997, leg. D.-S. Ku.

Holotype is in good condition: (1) glued on a card point by right side of its mesosoma, (2) right legs partly merged into glue. – Four female paratypes are also in good condition: (1) glued on card points by their left side (1 f) and right side (1 f) as well as on mesosternum (2 f), (3) metasoma and left hind leg glued separately on the card point (1 f: Chungnam). – One male paratype is in good condition: (1) glued on card point by its right mesosoma side, (2) left antenna apically deficient: last two flagellomeres missing, i.e. antenna with 23 antennomeres.

Holotype and five paratypes (4 f + 1 m) are deposited in the Hungarian Natural History Museum , Budapest, Hym. Typ. Nos 12126 (holotype) and 12127–12131 (paratypes).

Etymology – The species name ”longulus” refering to the elongate form of the meso- and metasoma.

Description of the female holotype – Body length 2.7 mm. Antenna somewhat longer than body and with 25 antennomeres. First flagellomere four times and penultimate flagellomere twice as long as broad, flagellomeres distally indistinctly thickening. – Head in dorsal view cubic (Fig. 47), almost 1.6 times as broad as long, temple 0.8 times as long as eye and more rounded, occiput faintly excavated and bare. Ocelli small, elliptic, OOL clearly twice as long as POL. Eye in lateral view 1.6 times as high as wide and slightly wider than temple (20:18), temple beyond eye slightly narrowing ventrally (Fig. 48). Face 1.5 times as wide as high (without clypeus), inner margin of eyes parallel. Mandible about as long medially as broad between upper and lower teeth, upper (or first) and second teeth of equal size (Fig. 49).

Figs 54–63. Chorebus (Stiphrocera) species. 54–56: Ch. (S.) longulus sp. n.: 54 = tergites 1–3 (female holotype), 55 = hind half of head in dorsal view (female paratype), 56 = hind femur (female paratype). 57–60: Ch. (S.) diremtus (Nees) , female: 57 = head in dorsal view, 58 = tergites 1–2, 59 = distal part of right fore wing, 60 = mandible. 61–63: Ch. (S.) voltor Papp , female holotype: 61 = head in dorsal view, 62 = head in frontal view, 63 = distal part of right fore wing.

Mesosoma 2.4 times as long as high, polished. Notaulix very faintly distinct, smooth. Mesoscutum medially hairy, laterally bare. Propodeum rugose, pubescence. Precoxal suture linearform, smooth, extending to almost entire width of mesopleuron. Rosette pubescence of metapleuron less distinct. – Hind femur 3.5 times as long as broad distally (Fig. 50). Hind tibia and tarsus equal in length. Hind basitarsus slightly longer than tarsomeres 2–3 combined.

Fore wing somewhat shorter than body. Pterostigma (Fig. 51) cuneiform, 5.5 times as long as wide, r as long as width of pterostigma; 1– R 1 0.7 times as long as pterostigma, 2–SR 1.5 times as long as r, 3–SR + SR1 ending before tip of wing, SR1 straight. First subdiscal cell: cell itself relatively narrow, 2–CU1 four times as long as 1–CU1, distally closed, i.e. Cu1b present as in Fig. 52 (see arrow).

First tergite long (Fig. 54), 2.2 times as long as broad posteriorly, parallel-sided, pair of basal keels meeting anteriorly, pair of spiracles somewhat before middle of tergite, tergite itself with striate elements, interstriates subrugulose. Second tergite somewhat longer than third tergite, tergites 2–3 somewhat shorter than first tergite and together with further tergites polished. Hypopygium pointed, ovipositor sheath as long as hind basitarsus (Fig. 53).

Scape and pedicel light brown, flagellum brown. Head, mesosoma and first tergite dark brown, metasoma brown. Palpi straw yellow. Tegula brown, parategula light brown. Legs yellow, hind tibia + tarsus faintly darkening. Wings subhyaline, pterostigma and veins light opaque brown.

Description of the four female paratypes – Similar to the female holotype. Body 2.2–2.8 mm long (2.2: 1 f, 2.4: 1 f, 2.7: 1 f, 2.8: 1 f). Antenna with 24 (2 f) and 25 (2 f) antennomeres. Head in dorsal view 1.5 times (2 f), 1.6 times (1 f) to 1.65 times (1 f) as broad as long; temple somewhat more rounded (Fig. 55). Hind femur 3.8 times as long as broad distally (4 f, Fig. 56). Fore wing: 1– R 1 0.75 times as long as pterostigma (2 f). Head, mesosoma and first tergite brown, metasoma light brown.

Description of the male paratype – Similar to the female types. Body 2.2 mm long. Right antenna about one-third longer than body and with 25 antennomeres. First flagellomere 2.6 times and penultimate flagellomere 3 times as long as broad, flagellomeres attenuating. Head in dorsal view 1.6 times as broad as long. Hind femur 3.8 times as long as broad distally. Fore wing: pterostigma narrow, ten times as long as wide. First tergite 2.5 times as long as broad posteriorly. Head and mesosoma black, metasoma brownish black. Legs yellow.

Taxonomic position – The new species, Chorebus (Stiphrocera) longulus , is nearest to Ch. (S.) diremtus (Nees) (redescription by Nixon 1937: 27) viewing their elongate meso- and metasoma and subcubic / cubic head in dorsal view (Figs 47, 57), the two species are distinguished as follows:

1 (2) Head in dorsal view cubic (Fig. 57), 1.5 times as broad as long, temple as long as eye and rounded. First tergite less long, 1.8 times as long as broad behind, subparallel-sided (Fig. 58). Fore wing: 1– R 1 0.6 times as long as pterostigma, r 1.4 times as long as width of pterostigma, 2–SR and r equal in length, pterostigma 8–10 times as long as wide (Fig. 59, see arrows). Mandible: upper (or first) tooth somewhat smaller than second tooth, latter tooth pointed as in Fig. 60. Head and mesosoma black, meta- soma dark brown. f: 1.6–2.2 mm. – Palaearctic Region

Chorebus (Stiphrocera) diremtus (Nees, 1834)

2 (1) Head in dorsal view subcubic (Fig. 47), 1.6 times as long as broad, temple short: 0.75 times as long as eye and more rounded. First tergite long, 2.2 times (f) and 2.5 times (m) as long as broad behind, parallel-sided (Fig. 54). Fore wing: 1– R 1 0.7 times as long as pterostigma, r as long as width of pterostigma, 2–SR 1.5 times as long as r, pterostigma 5.5 times as long as wide (Fig. 51, see arrows). Mandible: upper (or first) and second teeth equal in size, latter tooth less pointed as in Fig. 49. Body dark brown to brown, metasoma (except first tergite) brown to light brown. f: 2.2–2.8 mm. – Korea Chorebus (Stiphrocera) longulus sp. n.

The new species is also near to Ch. (S.) voltor Papp ( PAPP 2009: 258) considering their cubic head (Figs 47, 61), elongate form of mesosoma and meta- soma and the yellow legs; the two species differ from each other as follows:

1 (2) Head in dorsal view less cubic (Fig. 47), 1.6 times as broad as long, temple rounded and 0.75 times as long as eye. Inner margin of eyes parallel (cf. Fig. 86). Antenna somewhat longer than body and with 24–25 antennomeres, flagellomeres less long: penultimate flagellomeres twice as long as broad. Fore wing: pterostigma wide, 5.5 times as long as wide, 1–R1 0.7 times as long as pterostigma, 2–SR 1.5 times as long as r (Fig. 51, see arrows). Metasoma (except blackish first tergite) brown to light brown. fm: 2.2–2.8 mm. – Korea Chorebus (Stiphrocera) longulus sp. n.

2 (1) Head in dorsal view cubic (Fig. 61), 1.4 times as broad as long, temple faintly swollen and slightly longer than eye. Inner margin of eyes slightly converging ventrally (Fig. 62). Antenna nearly twice as long as body and with 30 antennomeres, flagellomeres long: penultimate flagellomere 3.6 times as long as broad. Fore wing: pterostigma narrow, 8 times as long as wide, 1–R1 0.8 times as long as pterostigma, 2–SR and r equal in length (Fig. 63, see arrows). Metasoma (except black first tergite) yellow. f: 1.9 mm. – Korea Chorebus (Stiphrocera) voltor Papp, 2009

The new species is near to Ch. (S.) flagellaris Tobias ( TobiAs 1998: 395) by their elongate meso- and metasoma, loose tuft of hairs above hind coxa of Ch. longulus (Fig. 64) reminding wooly tuft of pubescence of coxa of Ch. flagellaris (Fig. 65); their separation restricting to a few and well recognizable features:

1 (2) Temple in dorsal view rounded and somewhat (0.75 times) shorter than eye (Fig. 47). Antenna with 24–25 antennomeres. First tergite 2.2 times (f) and 2.5 times (m) as long broad posteriorly (Fig. 54). Hind femur 3.5

times (f, Fig. 50) and 3.8 times (m) as long as broad distally. Occiput bare. Metasoma brown to light brown. Body gracile, fm: 2.2–2.8 mm. – Korea

Chorebus (Stiphrocera) longulus sp. n.

2 (1) Temple in dorsal view faintly swollen and one-fourth (i.e. 1.25 times) longer than eye (Fig. 66). Antenna with 32–35 antennomeres. First tergite 2.6–3 times as long as broad posteriorly (Fig. 67). Hind femur 4.1–4.5 times as long as broad distally (Fig. 68). Occiput hairy. Metasoma black, second tergite brown. Body strong, fm: 2.5–3 mm. – Asiatic Russia (Primorski Krai, Sakhalin, Kuril Islands )

Chorebus (Phaenolexis) flagellaris Tobias, 1998

Figs 64–75. Chorebus species. 64: Ch. (Stiphrocera) longulus sp. n., female holotype: hind coxa. 65–68: Ch. (Phaenolexis) flagellaris Tobias. female paratype: 65 = hind coxa, 66 = head in dorsal view, 67 = first tergite, 68 = hind femur. 69–75: Ch. (Stiphrocera) minuitus sp. n., female holotype: 69 = head in dorsal view, 70 = head in lateral view, 71 = head in frontal view, 72 =

mandible, 73 = mesopleuron, 74 = hind femur, 75 = hind half of female metasoma.