Bracon (Ophthalmobracon) acunens Papp 2018, sp. n.
Creators: name: Papp, Jenő
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Bracon
Bracon acunens

description: Bracon (Ophthalmobracon) acunens sp. n.
(Figs 1–11)
Material examined (2 f + 4 m) – Female holotype and one female + one male paratypes: Korea, Gyenong Nam, Chinju City, Chojeon-dong, taken with light trap at night 0:00–03.00, 1 July 1993. – One male paratype: same locality, 1–2 July 1993. – One male paratype: same locality, 7–8 July 1993. – One male paratype: same locality, 25–26 July 1993. All six specimens were collected by Deok-Seo Ku.
Type condition – Holotype is in good condition: (1) glued on card point by its left meso- and metapleuron, (2) left hind leg somewhat less visible owing to the mounting. Five paratypes (1 f + 4 m) are also in good condition: (1) glued on card points by their left (1 f + 3 m) or right (1 m) meso- and metapleuron; (2) missing: tarsus of left hind leg (1 m) and tarsomeres 3–5 of left hind leg (1 m).
Type depository – Holotype and one female + four male paratypes are housed in the Hungarian Natural History Museum (Department of Zoology), Budapest; Hym. Typ. Nos 12266 (holotype) and 12267–12271 (paratypes).
Etymology – The new species received the name ”acunens” which is an acronym of the reduction of the Latin ”acu[tus cer]nens” (sharp eyed).
Description of the female holotype – Body 3.2 mm long. Antenna slightly shorter than body and with 23 antennomeres. First flagellomere 2.5 times and penultimate flagellomere 1.6 times as long as broad, flagellum faintly attenuating. – Head in dorsal view (Fig. 1), 1.8 times as broad as long, temple receded, eye 2.7 times longer than temple. Ocelli elliptic, OOL twice longer than POL. Malar space one-fourth shorter than basal width of mandible. Eye in lateral view nearly round, 1.3 times as high as wide, gena narrow, eye twice wider than gena (Fig. 2 see arrows). Face clearly twice wider than high, inner margin of eyes diverging ventrally. Oral opening elliptic: 1.5 times wider than shortest distance between opening and eye. Face, frons and vertex coriaceous, gena polished.
Mesosoma in lateral view 1.4 times as long as high. Notauli feebly distinct, parallel, posteriorly meeting in rugosity; otherwise mesoscutum densely punctate, interpunctures shorter than punctures and shiny. Scutellum somewhat less densely punctate, interpunctures shiny. Propodeum polished with a medio-longitudinal sulcus, above lunule rugulose (Fig. 3). Mesopleuron polished, prescutellar furrow indicated by coriaceous sculpture. – Hind femur thick, 2.7 times as long as broad medially (Fig. 4).
Fore wing as long as body. Pterostigma 2.2 times as long as wide, issuing r proximally from its middle, r somewhat shorter than width of pterostigma (15:18), second submarginal cell long: 2–SR slightly shorter than 3–SR (22:25), SR1 2.4 times as long as 3–SR and reaching tip of wing (Fig. 5). First discal cell: 1–M and 1–SR–M meeting in obtuse angle, 1–M 2.2 times longer than m–cu (Fig. 6 see arrow).
First tergite very broad, 1.25 times wider at rear than long or 0.8 times as long as wide posteriorly; second tergite 2.7 times as wide as long (laterally) and 1.45 times as long as third tergite, suture between tergites 2–3 bisinuate (Fig. 7). Tergites strongly rugose. Ovipositor sheath somewhat longer than hind tarsus (40:35).
Scape and pedicel ochre yellow, flagellum blackish brown. Ground colour of body black with reach light pattern. Testaceous: lateral part of pronotum, posterior half of mesoscutum. Ochre yellow: face, clypeus and cheek. Palpi pale yellow. Straw yellow: second tergite except antero-median black macula, third and fourth tergites laterally. Tegula and parategula ochre. Legs 1–2 yellow; leg 3: coxa black, trochanters straw yellow, femur blackish, basally and apically blackish, tibia yellow and distally brownish fumous, tarsus brownish fumous. Wings subhyaline, pterostigma and veins dark brown, pterostigma with a small yellow macula.
Description of the female paratype – Similar to the female holotype. Body 3.5 mm long. Penultimate flagellomere 1.7 times as long as broad. Head in dorsal view 1.9 times as broad as long, eye 2.5 times longer than temple. Eye in lateral view 1.4 times as high as wide, narrow, eye 1.9 times wider than gena. Malar space one-third shorter than basal width of mandible. Fore wing: pterostigma 2.1 times as long as wide, issuing r just proximally from its middle; 3–SR somewhat longer than 2–SR (25:23). Hind femur 3.1 times as long as broad just distally (Fig. 8). Suture beween tergites 2–3 somewhat more bisinuate. Colouration similar to that of holotype.
Description of the four male paratypes – Similar to the female types. Body 2.2–2.7 mm long. Antenna shorter than to almost as long as body and with 19–24 antennomeres (19: 1 m, 20: 1 m, 24: 1 m). Penultimate flagellomere 2–2.3 times as long as broad (2: 2 m, 2.3: 2 m). Head in dorsal view variably 1.7 to 1.85 times as broad as long, temple slightly less receded (Fig. 9). Anterior half of mesoscutum polished, its posterior half punctate (interpunctures shorter than punctures). Hind femur less thick, 3.3 times as long as broad medially or somewhat distally (1 m). Fore wing: pterostigma 2–2.5 times as long as wide (2: 1 m, 2.3: 2 m, 2.5: 1 m). First tergite either somewhat broader at rear than long (45:40 Fig. 10) or somewhat longer than broad behind (40:36 Fig. 11). Suture between tergites 2–3 almost straight. Dark colour of body more extended.
Taxonomic position – The new braconine species, Bracon (Ophthalmobracon) acunens sp. n., is close to Bracon (Ophthalmobracon) ophthalmicus Telenga (TELENGA 1933) considering their large compound eye (Figs 1–2, 12), long submarginal cell of fore wing (Figs 5, 15), yellow tegula and legs 1–2; the distinction of the two species is keyed:
1 (2) Head in dorsal view somewhat less transverse, 1.6–1.7 times as broadas long, eye four times longer than temple, temple slightly more receded (Fig. 12). First tergite broadening posteriorly, 1.2 times longer than wide at rear or 0.8 times as wide behind as long, second tergite 3.3 times wider than long, tergites 2–3 equal in length (Fig. 13); that of the male: first tergite 1.3–1.4 times longer than broad (Fig. 14). Fore wing:SR1approaching tip of wing,3–SRsomewhat longer than2–SR(Fig. 15). Antenna with 26 antennomeres. Hind femur 3.3 times (f: Fig. 16) to 3.8 times (m: Fig. 20) as long as broad. Body yellow. f: 2.5–3.5 mm, m: 2.3–2.4 mm. – Israel, Turkmenistan, Uzbekistan, Georgia, MongoliaBracon (Ophthalmobracon) ophthalmicusTelenga, 1933
2 (1) Head in dorsal view somewhat more transverse, 1.8 times as broad as long, eye 2.7 times longer than temple, temple slightly less receded (Fig. 1). First tergite (Figs 7, 10) strongly broadening posteriorly, 1.25 times wider behind than long or 0.8 times as long as wide at rear; second tergite longer than third tergite. Fore wing: SR1 reaching tip of wing, 3–SR just longer than 2–SR (Fig. 5). Antenna with 23 antennomeres. Hind femur 2.5–2.9 times as long as broad (Figs 4), that of male: 3.1 times longer than broad (Fig. 8). Body black with straw yellow to testaceous pattern. f: 3.2–3.5 mm, m: 2.2–2.7 mm. – Korea Bracon (Ophthalmobracon) acunens sp. n.
The new species is also close to Bracon (Sculptobracon) yakui Watanabe considering their common traits: first tergite broad, second tergite longer than third tergite, tergites with strong sculpture, long submarginal cell of fore wing and dark coloured body; the distinction between the two species is as follows:
1 (2) Tergites roughly and fairly evenly sculptured, eye usual in size (subgenus Sculptobracon). Eye in lateral view not large, 1.5–1.6 times as high as wide, 1.25–1.3 times wider than gena (Fig. 17 see arrows), eye in dorsal view 1.5–1.6 times longer than temple, temple rounded (Fig. 18). Fore wing: SR1 approaching tip of wing (Fig. 19), 1–M and 1–SR–M of first discal cell meeting in acute angle, 1–M 2–2.3 times longer than m–cu (Fig. 21 see arrow). Second tergite medially with a polished field. Black colour of body somewhat less extended, i.e., body with more light colour pattern. f: 3.2–3.5 mm. – Russia, Japan, Korea Bracon (Sculptobracon) yakui Watanabe, 1937
2 (1) Tergites less roughly sculptured, eye large (subgenus Ophthalmobracon). Eye in lateral view large, 1.3 times as high as wide, twice wider than gena (Fig. 2 see arrows), eye in dorsal view 2.7 times longer than temple, temple receded (Fig. 1). Fore wing: SR1 reaching tip of wing (Fig. 5), 1–M and 1–SR–M of first discal cell meeting in obtuse angle, 1–M 2.2 times onger than m–cu (Fig. 6 see arrow). Second tergite medially without polished field. Body black with less light coloured pattern. f: 2.7–3(–3.7) mm. – Korea Bracon (Ophthalmobracon) acunens sp. n.
description: Published as part of Papp, Jenő, 2018, Braconidae (Hymenoptera) From Korea, Xxiv. Species Of Thirteen Subfamilies, pp. 21-50 in Acta Zoologica Academiae Scientiarum Hungaricae 64 (1) on pages 22-26, DOI: 10.17109/AZH.64.1.21.2018, http://zenodo.org/record/5734617