Bracon (Gabrobracon) peroculatus Wesmael 1838
Creators: name: Papp, Jenő
name: Xviii, Budapest
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Bracon
Bracon peroculatus

description: Bracon (Gabrobracon) peroculatus Wesmael, 1838
Fig. 36 A-L
Braco peroculatus Wesmael, 1838: 46 ♀ (type series: 1 ♀), type locality: “environs de Liège” (Belgium), ♀ holotype (“Je ne possède qu’un seul individu de cette espèce,...” Wesmael l.c., present designation) in the Royal Belgian Institute of Natural Sciences, Brussels; examined.
Braco peroculatus – Szépligeti 1901: 266 (in key, in Hungarian); 1904 (1901): 187 (in key, in German). Bracon (Glabrobracon) peroculatus – Fahringer 1927: 282 (♀, in key) and 1928: 481 (redescription), assigned to “Section Glabrobracon ”. — Telenga 1936: 143 (♀, in key), 180 (redescription) (in Russian) and 345 (in key, in German). — Shenefelt 1978: 1579 (literature up to 1971). — Tobias 1986: 136 (in key, in Russian). — Tobias & Belokobylskij 2000: 148 (in key, in Russian).
Designation of the ♀ holotype of B. peroculatus
(First label, handwritten) “47”; (second label, printed) “Coll. Wesmael”; (third label, printed) “2060”; (fourth label) “ Braco ♀ / peroculatus mihi L” (handwritten) “dét. C. Wesmael” (printed); (fifth label, printed) “Type”; (sixth label with my handwriting) “ Belgique / Liège / leg. M. Robert” (above) “teste J. Papp 1987” (reverse); seventh label is the holotype card attached by me. Holotype is in fairly poor condition: (1) micropinned; (2) flagelli deficient; (3) right fore wing distally (beyond pterostigma) deficient; (4) missing: hind pair of wings and pair of ovipositor sheath.
Material examined
4 ♀♀ from four countries: AUSTRIA, Salzburg, Mattsee: 1 ♀, taken from an umbellifer flower, 9 Sep. 1957, leg. Babiy. GERMANY, Thüringen, Triptis, Braunsd. Wald: 1 ♀, 7 Jun. 1972, leg. H. Schnee. HUNGARY, Edde, Alsóbogát: 1 ♀, taken from Stenactis annua flower, 22 Jun. 1985, leg. Zs. Józan. MACEDONIA, Üsküb (=Skopje): 1 ♀, 4 Jun. 1914, leg. Schulze.
Redescription of the ♀ holotype of B. peroculatus (Fig. 36 A-G)
LENGTH. Body 5 mm long.
ANTENNAE. Deficient (according to the original description antenna with 40 antennomeres), right antenna with 16 and left antenna with 14 flagellomeres. First flagellomere 1.6 times and 16th flagellomere 1.3 times as long as broad apically.
HEAD. In dorsal view transverse (Fig. 36A), just less than twice (i.e. 1.9 times) as broad as long, eye somewhat protruding and 1.4 times as long as temple, temple receded, occiput weakly excavated. Horizontal diameter of oral opening one-fifth longer than shortest distance between opening and compound eye (Fig. 36B). Head polished.
MESOSOMA. In lateral view 1.3 times as long as high. Propodeum polished, around lunule with short subrugulosity.
LEGS. Hind femur 3.3 times as long as broad medially (Fig. 36C). Claw of hind leg clearly downcurved and its basal lobe fairly large (Fig. 36D).
WINGS. Forewing about one-quarter longer than body. Pterostigma wide (Fig. 36E), 2.8 times as long as wide and issuing r just proximally from its middle, r slightly shorter than width of pterostigma; second submarginal cell less long, 3-SR somewhat longer than 2-SR, SR1 more than twice as long as 3-SR, straight and reaching tip of wing; 1-R1 clearly 1.5 times as long as pterostigma. First discal cell high, 1-M a bit more than twice as long as m-cu, 1-SR-M bent and 1.2 times longer than 1-M (Fig. 36F).
TERGITES. First tergite (Fig. 36G) 1.3 times as long as broad behind, beyond pair of spiracles parallelsided, margin of scutum crenulated, scutum posteriorly with line-shape subrugulae. Second tergite one-sixth longer than third tergite, suture between them faintly biconcave, fairly deep and smooth. Second tergite anteo-medially (below small areola) subrugulose, otherwise together with further tergites polished. Ovipositor sheath as long as hind tibia + tarsus combined.
COLOUR. Antenna, head, mesosoma and legs black, metasoma yellow. Pedicel, orbit, clypeus and mandible brownish yellow. Palpi brownish. Tegula brown. Trochanteri partly, femora + tibiae apically and tarsi ventrally rusty yellow. Scutum of first tergite black. Wings brownish fumous, pterostigma and veins light brown.
Variabilities of three ♀♀ (Fig. 36 F-L)
Body 4.5-5 mm long. Antenna somewhat shorter (1 ♀) to as long as body (2 ♀♀), with 33-39 antennomeres. First flagellomere 1.5-1.6 times and penultimate flagellomere 1.3 times as long as broad. Head in dorsal view 1.8-1.85 as broad as long, eye somewhat less protruding (Fig. 36H). Hind femur as in Fig. 36I. Pterostigma 2.5 times as long as wide (Fig. 36J). First tergite slightly broadening beyond pair of spiracles (Fig. 36K). First tergite entirely black, further tergites medially with a black streak. Posterior end of ovipositor apparatus as in Fig. 36L. Fore leg yellow except coxa + trochanter. Tegula brown to yellow. Mandible rusty.
Male unknown.
Host
LEP. Tortricidae: Cnephasia chrysantheana Duponchel.
Distribution
Belgium, Germany, Austria, Macedonia, European Russia, Asiatic Russia (Primorski Krai).
Taxonomic position
Bracon peroculatus is nearest to B. megapterus Wesmael (Europe, Mongolia) considering their corporal structure and colour pattern; however, they are differentiated by the following features:
1 (2) Scutum of first tergite postero-laterally without a pair of impressions, second tergite anteromedially with a usual small areola, tergite laterally not impressed: subgeneric difference of Glabrobracon (Fig. 36G). Temple in dorsal view receded, head transverse, 1.8-1.9 times as broad as long (Fig. 36A, H). Second submarginal cell less long, 3-SR somewhat longer than 2-SR (Fig. 36E). ♀: 4.5-5 mm ................................................................................. B. (Gl.) peroculatus Wesmael, 1838
2 (1) Scutum of first tergite postero-laterally with a pair of impressions, second tergite antero-medially with a well prominent areola margined with crenulae, tergite laterally longitudinally impressed: subgeneric difference of Foveobracon (Fig. 22H, J). Temple in dorsal view rounded, head less transverse, 1.7 times as broad as long (Fig. 22A). Second submarginal cell long, 3-SR 1.7-1.8 times longer than 2-SR (Fig. 22F). ♀ ♁: 5 mm ......................................... B. (Fov.) megapterus Wesmael, 1838
Bracon peroculatus is also near to B. plugarui considering their corporal structure, form of second submarginal cell of fore wing and colour of body; the two species are distinguished as follows:
1 (2) First and second tergites without impression: subgeneric difference of Glabrobracon. Second tergite clearly longer than third tergite; second tergite around areola not (or weakly) sculptured (Fig. 36G). Eye in dorsal view somewhat protruding (Fig. 36A). Ovipositor sheath as long as hind tibia + tarsus combined. Mandible brownish yellow to rusty. ♀: 4.5-5 mm ..................................................... ........................................................................................................ B. (Gl.) peroculatus Wesmael, 1838
2 (1) Scutum of first tergite and second tergite laterally with a pair of impressions: subgeneric difference of Foveobracon. Tergites 2-3 equal in length; second tergite around areola rugo-rugulose (Fig. 23D). Eye in dorsal view not protruding (Fig. 23B). Ovipositor sheath at most as long as hind tarsus. Mandible pale yelolw. ♀: 2-3 mm ................................................ B. (Fov.) plugarui Tobias, 1986
description: Published as part of Papp, Jenő & Xviii, Budapest, 2012, A revision of the Bracon Fabricius species in Wesmael's collection deposited in Brussels (Hymenoptera: Braconidae: Braconinae), pp. 1-154 in European Journal of Taxonomy 21 on pages 76-78, DOI: 10.5852/ejt.2012.21, http://zenodo.org/record/3858161