Chorebus (Stiphrocera) deminens, Papp, 2013
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publication ID |
https://doi.org/ 10.5281/zenodo.5736212 |
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persistent identifier |
https://treatment.plazi.org/id/039D481F-FFC1-1026-9777-FBE5FB55FA20 |
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treatment provided by |
Felipe |
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scientific name |
Chorebus (Stiphrocera) deminens |
| status |
sp. nov. |
Chorebus (Stiphrocera) deminens sp. n.
( Figs 12–14 View Figs 1–15 , 16–20)
Type material – Male holotype: Korea, Kyonggi Suwon, 15 June 1994, leg. D-S. Ku. Holotype is in good condition: (1) glued on a card point by its right mesosomal side, (2) right side of mesosoma invisible owing to the mounting. Holotype is deposited in the Hungarian Natral History Museum, Budapest, Hym. Typ. No. 12122 .
Etymology – The new species received the name ”deminens” being an epithet of demin[utus d]ens (less expanded tooth).
Description of the male holotype – Body length 2 mm. Antenna nearly twice as long as body and with 33 antennomeres. First flagellomere 3.1 times and penultimate flagellomere twice as long as broad, flagellomeres distally attenuating. – Head in dorsal view transverse ( Fig. 12 View Figs 1–15 ), 1.8 times as broad as long, eye somewhat longer than temple (17:15), temple very faintly swollen (i.e. head between temples a bit broader than between eyes). Eye in lateral view 1.8 times as high as wide, temple as wide as eye. Mandible as long medially as high between upper and lower teeth, upper tooth highly expanded, teeth 2–4 small ( Fig. 14 View Figs 1–15 ). In frontal view inner margin of eyes feebly converging ventrally ( Fig. 13 View Figs 1–15 ). Maxillar palpomeres long, palp almost as long as height of head. Head polished, face and clypeus hairy, vertex with more widely dispersed hairs.
Mesosoma in lateral view 1.4 times as long as high. Pronotum bare. Notaulix indistinct. Mesoscutum hairy except hind half of lateral lobes, mesoscutal midpit short linearform; mesoscutum and scutellum polished. Propodeum densely rugose, densely hairy to mandible. 15 = Chorebus (Stiphrocera) resus (Nixon) , male: mandible.
Figs 16–30. Chorebus (Stiphrocera) species. 16–20: Ch. (S.) deminens sp. n., male holotype: 16 = mesopleuron, 17 = hind femur, 18 = distal part of right fore wing, 19 = first subdiscal cell, 20 = tergites 1-3. 21–22: Ch. (S.) resus (Nixon) , male: 21 = tergites 1-3, 22 = distal part of right fore wing. 23–26. Ch. (S.) gavirus sp. n., male, holotype: 23 = head in dorsal view, 24 = mandible, 25 = mesopleuron, 26 = first subdiscal cell of fore wing. 27–28. Ch. (S.) albimarginis Griffiths , male: 27 = head in dorsal view, 28 = mandible. 29–30: Ch. (S.) meracus Tobias , male:
29 = head in dorsal view, 30 = mandible.
pubescence, metapleural rosette distinct. Mesopleuron polished, its precoxal suture narrow and crenulated (Fig. 16). – Hind femur 3.8 times as long as broad distally (Fig. 17). Hind tibia and tarsus equal in length, hind basitarsus as long as tarsomeres 2–3 combined.
Fore wing about one-sixth longer than body. Pterostigma (Fig. 18) fairly wide, cuneiform, eight times as long as wide, r somewhat longer than width of pterostigma (7:5); 1–R1 short, half as long as pterostigma, 3–SR + SR1 evenly bent and less approaching tip of wing. First subdiscoidal cell closed distally (Fig. 19, see arrow).
First tergite (Fig. 20) 1.6 times as long as broad behind, up to pair of spiracles weakly broadening, beyond spiracles parallel-sided, pair of basal keels less distinct and meeting anteriorly; tergite itself densely rugose, hairy, hind corner with tuft of hairs. Further tergites polished. Tergites 2–3 somewhat longer than first tergite.
Scape, pedicel and flagellomeres 1–2(–3) yellow, rest of flagellum brown. Head, mesosoma and first tergite black, tergites 2–3 dark brown, rest of tergites blackish. Mandible yellow, palpi pale yellow. Tegula brown. Legs yellow, telotarsi dark. Wings hyaline, pterostigma and veins greyish brownish.
Female and host unknown.
Distribution: Korea.
Taxonomic position – The new species, Chorebus (Stiphrocera) deminens , is nearest to Ch. (St.) resus (Nixon) ( Nixon 1937: 21 description, 1943: 165 in key, 1944: 151 redescription) considering their expanded upper (or first) tooth of mandible, first tergite parallel-sided, transverse head in dorsal view and yellow legs; the distinction of the males of the two species restricting to a few features:
1 (2) First (or upper) tooth of mandible less expanded ( Fig. 14 View Figs 1–15 ). First tergite less long, 1.6 times as long as broad behind (Fig. 20). Fore wing: 1–R1 short, half as long as pterostigma, less approaching tip of wing (Fig. 18). Antenna with 33 antennomeres. Metasoma dark brown to blackish, tegula brown. m: 2 mm. – Korea Chorebus (Stiphrocera) deminens sp. n.
2 (1) First (or upper) tooth of mandible more expanded ( Fig. 15 View Figs 1–15 ). First tergite longer, 2–2.4 times as long as broad behind (Fig. 21). Fore wing: 1–R1
long, one-third shorter than (or 0.6 times as long as) length of pterostig-
ma, more approaching tip of wing (Fig. 22). Antenna with 42 anten-
nomeres. Metasoma and tegula yellow. m: 2.4–3 mm. – Europe, Russia
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