Chorebus (Stiphrocera) ranfus, 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 : 256-260

Chorebus (Stiphrocera) ranfus sp. n.

(Figs 97–105, 108)

Type material – Female holotype: Korea, prov. South Pyongan , Pyongan, Nung-ra do (=island), 14 August 1971, leg. S. HorvAtovich et J. PAPP (loc. no. 175) . Holotype is in good condition: (1) glued on a card point by mesosternum and hind two pairs of coxae, (2) fore pair of wings faintly creased. Holotype is deposited in the Hungarian Natural History Museum, Budapest, Hym. Typ. No. 12134.

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

Description of the female holotype – Body length 2.6 mm. Antenna one-sixth longer than body and with 31 antennomeres. First flagellomere 3.3 times, further flagellomeres gradually shortening so that penultimate flagellomere 1.6 times as long as broad. – Head in dorsal view transverse (Fig. 97), 1.85 times as broad as long, eye almost 1.3 times as long as temple, temple rounded. Eye in lateral view almost twice as high as wide, temple just less wide than eye; joint of mandible (i.e. the weakly sclerotized part of mandible base) relatively large (Fig. 98, see arrows). Mandible 1.4 times as long medially as broad between upper and lower teeth, second tooth strong, fourth tooth retracted (Fig. 99, see arrow). Maxillar palp long, last three palpomeres nearly four times as long as broad. Inner margin of eyes converging ventrally: face 1.5 times as wide above between eyes as high medially (Fig. 100, see arrows). Head polished, face and clypeus hairy.

Mesosoma in lateral view stout, 1.2 times as long as high. Pronope present. Mesoscutum polished, its anterior declivous part rugulo-subrugulose, imaginary run of notaulix with row of hairs. Propodeum rugose, pubescent, rosette less distinct. Precoxal suture wide, crenulated (Fig. 101). – Hind femur 3.8 times as long as broad distally (Fig. 102). Hind tibia as long as hind tarsus. Hind basitarsus as long as tarsomeres 2–3 + half of 4th tarsomere.

Fore wing as long as body. Pterostigma wide (Fig. 103), five times as long as wide, issuing r from its proximal fourth, r as long as width of pterostigma. 2–SR 1.3 times as long as r and faintly bent, SR1 part of 3–SR + SR1 bent; 1– R 1 long: pterostigma 1.4 times as long as 1– R 1 (or 1– R 1 0.7 times as long as pterostigma) and approaching tip of wing (Fig. 103, see arrows). First subdiscal cell open distally: 2–1A partly desclerotized distally (Fig. 104, see arrows).

First tergite 1.3 times as long as broad behind, clearly broadening posteriorly: twice broader behind than basally, pair of basal keels short and not meeting, pair of spiracles at middle of tergite; tergite densely rugose and dispersely hairy, at its hind corner hairs somewhat tumescent (Fig. 105). Further tergites polished. Tergites 2–3 as long as first tergite, border between them indistinct, third tergite slightly longer than second tergite. Hypopygium pointed, ovipositor sheath short: as long as half basitarsus and upcurved (Fig. 108).

Scape and pedicel brown, flagellum blackish. Head, mesosoma and first tergite black, rest of metasoma dark brown. Labrum yellow, palpi pale yellow. Tegula brown. Legs yellow, hind coxa faintly light brownish, hind tarsus greyish-brownish. Wings hyaline, pterostigma brown, veins proximo-distally yellow, light brown to brown.

Male and host unknown.

Distribution: Korea.

Figs 97–107. Chorebus (Stiphrocera) species. 97–105: Ch. (S.) ranfus sp. n., female holotype: 97 = head in dorsal view, 98 = head in lateral view, 99 = mandible, 100 = head in frontal view, 101 = mesopleuron, 102 = hind femur, 103 = distal part of right fore wing, 104 = first subdiscal cell of fore wing, 105 = tergites 1–3. 106–107: Ch. (S.) varunus (Nixon) , female paratype:

106 = distal part of right fore wing, 107 = head in frontal view.

Taxonomic position – The new species, Chorebus (Stiphrocera) ranfus , is nearest to Ch. (S.) varunus (Nixon) ( Nixon 1945: 192 in key, 202 description) considering their shared features as follows: inner margin of eyes converging ventrally (Figs 100, 107), long flagellomeres, posteriorly broadening first tergites (Figs 105, 112), yellow legs; the distinction between the two species is presented as follows:

1 (2) Fore wing: 1–R1 long, pterostigma 1.4 times as long as 1–R1 (or 1–R1 0.7 times as long as pterostigma), pterostigma itself wide: five times as long as wide (Fig. 103, see arrows). First subdiscal cell partly open, i.e. 2–1A partly desclerotized (Fig. 104, see arrows). Face 1.5 times as wide above as high medially (Fig. 100, see arrows). Mesoscutum along imaginary notaulix with row of hairs. Mandible: second tooth strong, fourth tooth retracted (Fig. 99, see arrow). Precoxal suture wide, long and crenulated (Fig. 101). First tergite slightly more broadening posteriorly, twice broad- er apically than basally, 1.3 times as long as broad posteriorly, its rugosity less rough (Fig. 105). Antenna with 31 antennomeres. Pterostigma brown. f: 2.6 mm. – Korea Chorebus (Stiphrocera) ranfus sp. n.

2 (1) Fore wing: 1–R1 short, pterostigma 1.6–1.7 times as long as 1–R1 (or 1–R1 0.6 times as long as pterostigma), pterostigma itself narrow: ten times as long as wide (Fig. 106, see arrows). First subdiscal cell nearly fully open, i.e. 2–1A distally desclerotized (Fig. 109, see arrow). Face 1.3–1.35 as wide above as high medially (Fig. 107, see arrows). Mesoscutum entirely hairy. Mandible: second tooth less strong, fourth tooth not retracted (Fig. 110, see arrow). Precoxal suture narrow, short and subcrenulated (Fig. 111). First tergite slightly less broadening posteriorly, 1.7–1.8 times broader apically than basally, 1.6 times as long as broad posteriorly, its rugosity rough (Fig. 112). Antenna with 22–26 antennomeres. Pterostigma yellowish to brownish yellow. f: 1.9–2 mm. – Europe, Russia, Turkey, Azerbaijan, Kazakhstan Chorebus (Stiphrocera) varunus ( Nixon, 1945)

The new species is also near to Ch. (S.) ilvus Papp ( PAPP 2009: 249) viewing their ventrally more or less converging eyes, posteriorly broadening first tergite, long r of fore wing and yellow legs; the two species are separated by a few though distinct features:

1 (2) Head in dorsal view transverse (Fig. 97), 1.85 times as broad as long,

temple rounded. Mandible: second tooth large, fourth tooth less distinct

(Fig. 99, see arrow). Precoxal suture wide, distinctly crenulated (Fig.

101). Antenna with 31 antennomeres. Fore wing: pterostigma, wide, five times as long as wide, 1–R1 0.7 times as long as pterostigma (Fig. 103, see arrows). Ovipositor sheath half as long as hind basitarsus, hypopygium

pointed as in Fig. 108. Hind tarsus greyish-brownish. f: 2.6 mm. – Korea

Chorebus (Stiphrocera) ranfus sp. n.

Figs 108–122. Chorebus species. 108: Ch. (Stiphrocera) ranfus sp. n., female holotype: hind half of female metasoma. 109–112: Ch. (S.) varunus (Nixon) , female paratype: 109 = first subdiscal cell of fore wing, 110 = mandible, 111 = mesopleuron, 112 = first tergite. 113–117: Ch. (S.) ilvus Papp , female holotype: 113 = head in dorsal view, 114 = mandible, 115 = mesopleuron, 116 = distal part of right fore wing, 117 = hind half of female metasoma. 118–122: Ch. (Phaenolexis) zeris sp. n., female holotype: 118 = head in dorsal view, 119 = head in lateral view, 120 = mandible, 121 = mesopleuron, 122 = hind coxa.

2 (1) Head in dorsal view less transverse (Fig. 113), 1.6 times as broad as long,

temple slightly swollen. Mandible: second tooth less large, fourth tooth distinct (Fig. 114, see arrow). Precoxal suture narrow, rather finely crenulated (Fig. 115). Antenna with 33–35 antennomeres. Fore wing: pterostig-

ma parallel-sided, narrow, ten times as long wide, 1–R1 0.6 times as long as pterostigma (Fig. 116, see arrows). Ovipositor sheath as long as hind

basitarsus, hypopygium pointed as in Fig. 117. f: 2–2.2 mm. – Korea

Chorebus (Stiphrocera) ilvus Papp, 2009