Chorebus (Phaenolexis) zeris, 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 : 260-264

Chorebus (Phaenolexis) zeris sp. n.

(Figs 118–127)

Type material – Female holotype: Korea, Kyongnam, Koseong Sangri Munsuam, 3 June 1993, leg. D.-S. Ku. Holotype is in good condition: (1) glued on a card point by its right mesopleuron, (2) left flagellum distally deficient. Holotype is deposited in the Hungarian Natural History Museum, Budapest, Hym. Typ. No. 12135 .

Etymology – The new species received the latinized phantasy name ”zeris”.

Description of the female holotype – Body length 3.8 mm. Antenna about one-third longer than body and with 39 antennomeres. First flagellum three times and penultimate flagellum 1.6 times as long as broad. – Head in dorsal view transverse (Fig. 118), 1.8 times as broad between temples as long, temple swollen: head between temples somewhat broader than between eyes, eye as long as temple. Ocelli rather small, elliptic, OOL three times as long as POL. Eye in lateral view 1.75 times as high as wide, gena behind eye as wide as eye and ventrally slightly widening (Fig. 119, see arrows). Inner margin of eyes parallel. Mandible: upper (or first) tooth somewhat hook-like, second tooth spiky, third tooth small, fourth tooth small albeit distinct (Fig. 120, see arrow). Head polished.

Mesosoma in lateral view 1.7 times as long as high, polished. Pronope distinct. Notaulix also distinct, shallow, smooth. Mesoscutum with fairly long and less dense hairs, hind part of lateral lobe bare. Precoxal suture linearform, extended from anterior to posterior margins, subcrenulated (Fig. 121). Propodeum and metapleuron densely rugulose. – Hind coxa above with dense tuft of pubescence (Fig. 122). Hind femur 2.9 times as long as broad distally (Fig. 123). Hind tarsus as long as hind tibia. Hind basitarsus somewhat shorter than tarsomeres 2–3 combined.

Fore wing as long as body. Pterostigma cuneiform (Fig. 124), eight times as long as wide, r somewhat (8:6) longer than width of pterostigma. Veins: 1– R 1 as long as pterostigma, 3–SR + SR1 curved, SR1 faintly S-form and approaching tip of wing (Fig. 124, see arrows). First subdiscal cell distally closed (Fig. 125, see arrow).

First tergite (Fig 126) 1.7 times as long as broad behind, weakly broadening posteriorly, pair of spiracles at middle of tergite, pair of basal keels reaching up to spiracles; tergite laterally hairy, its hind corner with tuft of hairs; tergite rugulose laterally with fine longitudinal elements. Further tergites polished. Second tergite 2.5 times as broad behind as long laterally, third tergite 1.2 times as long as second tergite, border between them almost indistinct (Fig. 126). Hypopygium less pointed, ovipositor sheath thin and a bit shorter than hind basitarsus (Fig. 127).

Scape and pedicel yellowish brown, flagellum darkening yellowish brown to brown. Head, mesosoma and first tergite black, rest of metasoma chestnut brown. Palpi pale yellow. Tegula blackish, parategula (distally from tegula) yelowish brown. Legs pale yellow. Hind femur brown, hind coxa bownish, hind tibia + tarsus brownish suffused. Wings subhyaline. Veins yellowish to light brownish.

Male and host unknown.

Distribution: Korea.

Figs 123–132. Chorebus species. 123–127: Ch. (Phaenolexis) zeris sp. n., female holotype: 123 = hind femur, 124 = distal part of right fore wing, 125 = first subdiscal cell of fore wing, 126 = tergites 1–3, 127 = hind half of female metasoma. 128–131: Ch. (Phaenolexis) declivis Tobias , female: 128 = head in dorsal view, 129 = mandible, 130 = hind femur, 131 = hind half of female metasoma. 132: Ch. (Stiphrocera) talpigo Papp , female holotype: hind coxa.

Taxonomic position – The new species, Chorebus (Phaenoleyis) zeris , runs to Ch. (Ph.) cephalotes Tobias and Ch. (Ph.) declivis Tobias ( TobiAs 1998: 386 and 402, respectively) with the help of Tobias’s key to the Chorebus species of Asiatic Russia ( TobiAs 1998: 354–410, the two species in question are known to me only by their description). The distinction of the three species is presented as follows:

1.) Distinction between Ch. cephalotes and Ch. zeris :

1 (2) Temple in dorsal view 1.5 times as long as eye. Antenna with 31 antenno-

meres. Ovipositor sheath long and thick, as long as hind tarsomeres 1–4.

Hind tarsus somewhat shorter than hind tibia. First tergite somewhat longer than broad behind. Legs yellowish brown. f: 3 mm. – Asiatic Russia (Primorski Krai, Khabarovski Krai)

Chorebus ( Phaenolexis cephalotes Tobias, 1998

2 (1) Temple in dorsal view as long as eye, temple swollen (Fig. 118). Antenna with 39 antennomeres. Ovipositor sheath short and thin, slightly shorter than hind basitarsus (Fig. 127). Hind tarsus as long as hind tibia. First tergite 1.7 times as long as broad behind (Fig. 126).

Legs pale yellow to yellow, hind femur brown. f: 3.8 mm. – Korea

Chorebus (Phaenolexis) zeris sp. n.

2.) Distinction between Ch. declivis and Ch. zeris :

1 (2) Head in dorsal view less transverse: 1.6 times as broad as long, temple not swollen (Fig. 128). Mandible: first and second teeth slightly less strong (Fig. 129). First tergite parallel-sided, 2.2 times as long as broad behind, rugulose with longitudinal elements; third tergite 1.5 times as long as second tergite (Fig. 133). Ovipositor sheath long, as long as half length of hind tibia (Fig. 131). Hind femur thin, 4.1 times as long as broad

(Fig. 130). Antenna with 27 (f) – 31 (m) antennomeres. Legs brownish yellow. fm: 2.2–2.5 mm. – Asiatic Russia (Primorski Krai), Korea

Chorebus (Phaenolexis) declivis Tobias, 1998

2 (1) Head in dorsal view transverse: 1.85 times as broad as long, temple swollen (Fig. 118). Mandible: first and second teeth slightly stronger

(Fig. 120). First tergite weakly broadening posteriorly, 1.7 times as long as broad behind, rugulose with longitudinal elements laterally, third tergite 1.2 times as long as second tergite (Fig. 126). Ovipositor sheath short, slightly shorter than hind basitarsus (Fig. 127). Hind femur thick,

2.9 times as long as broad (Fig. 123). Antenna with 39 antennomeres.

Legs pale yelow to yellow, hind femur brown. f: 3.8 mm. – Korea

Chorebus (Phaenolexis) zeris sp. n.

The new species is also near to Ch. (S.) talpigo Papp ( PAPP 2005: 241) considering their dark coloured body, first tergite less broadening and at most 1.8 times as long as broad behind (Figs 126, 133), head transverse in dorsal view (Fig. 118, 134); the two species are separated by the following features:

1 (2) Hind coxa above with loose tuft of hairs (subgeneric trait, Fig. 132). Temple in dorsal view not swollen, i.e. head between temples not broader than between eyes (Fig. 134). Mesopleuron sculptured as in Fig. 135. Mandible strong as in Fig. 137. Hind femur thin, 4.1 times as long as broad medially (Fig. 136). Fore wing: pterostigma twice as long as 1–R1 (Fig. 138, see arrows); first subdiscal cell not widening distally (Fig. 139). Ovipositor sheath thick as in Fig. 140. Legs brown to black with yellow pattern. f: 3.8 mm. – Mongolia Chorebus (Stiphrocera) talpigo Papp, 2005

Figs 133–140. Chorebus species. 133: Ch. (Phaenolexis) declivis Tobias , female: tergites 1–3. 134–140: Ch. (Stiphrocera) talpigo Papp , female holotype: 134 = head in dorsal view, 135 = mesopleuron, 136 = hind femur, 137 = mandible, 138 = distal part of right fore wing, 139 =

first subdiscal cell of fore wing, 140 = hind half of female metasoma.

2 (1) Hind coxa above with dense tuft of pubescence (subgeneric trait, Fig. 122). Temple in dorsal view weakly swollen, i.e. head between temples somewhat broader than between eyes (Fig. 118). Mesopleuron less sculp- tured as in Fig. 121. Mandible less strong as in Fig. 120. Hind femur thick, 2.9 times as long as broad distally (Fig. 123). Fore wing: pterostigma as long as 1–R1 (Fig. 124, see arrows); first subdiscal cell widening distally (Fig. 125). Ovipositor sheath thin as in Fig. 127. Legs pale yellow, hind femur brown. f: 4.2 mm. – Korea Chorebus (Phaenolexis) zeris sp. n.