Bracon (Lucobracon) guttiger Wesmael, 1838

Papp, Jenő & Xviii, Budapest, 2012, A revision of the Bracon Fabricius species in Wesmael’s collection deposited in Brussels (Hymenoptera: Braconidae: Braconinae), European Journal of Taxonomy 21, pp. 1-154 : 34-38

publication ID	https://doi.org/ 10.5852/ejt.2012.21
publication LSID	lsid:zoobank.org:pub:993FCC8B-F8B1-42DD-B776-CA8435E08112
DOI	https://doi.org/10.5281/zenodo.3858863
persistent identifier	https://treatment.plazi.org/id/F8008D0E-FFA4-FFD4-052B-4B94FA9CFB35
treatment provided by	Valdenar
scientific name	Bracon (Lucobracon) guttiger Wesmael, 1838
status

Treatment

Bracon (Lucobracon) guttiger Wesmael, 1838 View in CoL

Figs 13 View Fig A-H, 15A-D

Braco guttiger Wesmael, 1838: 19 ♀♁ (type material: three ♀♀ + one ♁, ♁ specimen lost?, not seen), type locality: “environs de Bruxelles ” ( Belgium), ♀ lectotype (and two ♀ paralectotypes, present designations) in the Royal Belgian Institute of Natural Sciences, Brussels; examined.

Bracon guttiger View in CoL – Szépligeti 1901: 265 (in key, in Hungarian); 1904 (1901): 177 (in key, in German).

Bracon (Orthobracon) guttiger View in CoL – Telenga 1936: 170 (♀), 177 (♁) (in key), 271 (redescription) (in Russian) and 373 (♀), 380 (♁) (in key, in German). — Shenefelt 1978: 1634 (literature up to 1974).

Bracon (Lucobracon) guttiger View in CoL – Fahringer 1927: 252 (♀), 256 (♁) (in key) and 355 (redescription), assigned to “Section Lucobracon ”. — Tobias 1986: 145 and 2000: 159 (in keys, in Russian). — Tobias & Belokobylskij 2000: 159 (in key, in Russian).

Designation of the ♀ lectotype of Bracon guttiger View in CoL

(First label with hardly legible handwriting)? “e.7. mai Icheut 2”; (second label, printed) “ Coll. Wesmael ”; (third label, printed) “2045”; (fourth label) “ Braco guttiger mihi ♁ ♀ ” (handwritten), “dét. C. Wesmael ” (printed); (fifth label printed red) “Type”; (sixth label attached by me) “ Belgique / Bruxelles / leg. Wesmael ”; seventh label is my lectotype card. Lectotype is in fairly good condition (compared to the two ♀ paralectotypes): (1) specimen micropinned; (2) both flagelli distally deficient; (3) left pair of wings missing; (4) left hind leg glued separately on the poliporus stage.

Designation of the two ♀ paralectotypes of Bracon guttiger

Labels identical to those of the lectotype except first label. The two paralectotypes are in poor condition, both are micropinned: 1 ♀ paralectotype: (1) left flagellum missing, right flagellum deficient and with ten flagellomeres, (2) left middle + hind legs (except coxae) and right hind tarsus missing; 1 ♀ paralectotype: (1) left flagellum deficient and with nine flagellomeres, (2) missing: right flagellum, left fore wing, right middle and left hind legs, metasoma.

Material examined

14 ♀♀ + 11 ♁♁ from ten countries): ENGLAND: 1 ♀ + 3 ♁♁ from three localities. DENMARK: 1 ♀. FINLAND: 1 ♀ + 1 ♁ from one locality. THE NETHERLANDS: 2 ♀♀ from one locality. GERMANY: 2 ♀♀ + 2 ♁♁ from four localities. BOHEMIA: 2 ♀♀ + 1 ♁ from three localities. HUNGARY: 3 ♀♀ + 3 ♁♁ from six localities. ITALY: 1 ♀. TURKEY: 1 ♁. ARMENIA: 1 ♀.

Redescription of the ♀ lectotype ( Fig. 13 View Fig A-H)

LENGTH. Body length is 3 mm.

ANTENNAE. Deficient, right flagellum with 15 and left flagellum with 14 flagellomeres. First flagellomere 2.5 times, second flagellomere twice and 15th flagellomere 1.5 times as long as broad ( Fig. 13A View Fig ).

HEAD. In dorsal view less transverse ( Fig. 13B View Fig ), nearly 1.7 times as broad as long, eye a bit longer than temple, temple rounded, occiput less excavated. Oral opening large, its horizontal diameter 2.5 times longer than shortest distance between opening and compound eye ( Fig. 13C View Fig ). Head polished, face finely granulose ( Fig. 13C View Fig ).

MESOSOMA. In lateral view 1.4 times as long as high, polished. Notaulix faintly distinct. Propodeum above lunule with an anteriorly weakening striolae-substriolae, otherwise polished ( Fig. 15A View Fig ).

LEGS. Hind femur 3.8 times as long as broad slightly distally ( Fig. 13D View Fig ). Hind claw strongly downcurved, its basal lobe large ( Fig. 13E View Fig ).

WINGS. Forewing as long as body. Pterostigma ( Fig. 13F View Fig ) less wide, 3.3 times as long as wide, issuing r from its middle, r 0.8 times as long as width of pterostigma; second submarginal cell short, 3-SR and 2-SR equal in length, SR1 2.7 times length of 3-SR, straight and reaching tip of wing. First discal cell fairly high, 1-M 1.75 times length of m-cu, 1-SR-M bent and almost 1.3 times longer than 1-M ( Fig. 13G View Fig ). TERGITES. First tergite ( Fig. 13H View Fig ) broad, a bit broader behind than long, beyond pair of spiracles parallelsided, scutum rugo-striate, margin of scutum crenulate, rim of tergite rugose. Second tergite one-third longer than third tergite, suture between them bisinuate, deep and subcrenulated. Tergites 3-4 fused, i.e. border between them hardly distinct and 1.6 times longer than second tergite ( Fig. 13H View Fig ). Second tergite longitudinally rugo-rugulose, further tergites polished. Ovipositor sheath short, as long as hind tarsomeres 1-2 combined.

COLOUR. Head and tergites dark brown, mesosoma blackish. Scape brown with rusty tint, flagellum brown. Labrum (or oral opening) and clypeus yellow, palpi pale yellow. Orbit rusty. Tegula light brown. Tergites 2-4 rusty brown, second tergite latero-posteriorly with a pair of light yellow maculae. Legs yellow, hind coxa and hind femur (except apically) brown to brownish. Wings subhyaline, pterostigma and veins yellowish brown.

Redescription of the two ♀ paralectotypes (one ♀ missing metasoma) ( Figs 13D View Fig ; 15 View Fig B-D)

Similar to the ♀ lectotype. Body 3.1 mm long (1 ♀). Head in dorsal view 1.7-1.8 times as broad as long. Propodeum above lunule with a weak short keel, along it rugulose ( Fig. 15C View Fig ). Hind femur 3.3 times ( Fig. 15D View Fig ) and 3.8 times ( Fig. 13D View Fig ) as long as broad distally. Ptertostigma ( Fig. 15B View Fig ) wide, 2.7 times as long as wide, second submarginal cell less short, 3-SR one-sixth longer than than 2-SR (1 ♀). Head and mesosoma blackish, hind coxa also blackish.

Variable features of the ♀ (14 ♀♀) ( Figs 1C View Fig ; 5B View Fig ; 7A View Fig ; 9D View Fig ; 11C View Fig ; 44F View Fig ; 48I View Fig )

Body 3-3.3 mm long. Antenna about as long as body and with 23-27 antennomeres (23: 1 ♀, 25: 6 ♀♀, 26: 4 ♀♀, 27: 1 ♀). Middle flagellomeres 1.6-1.7 times as long as broad (3 ♀♀). Head in dorsal view transverse, 1.7 (to 1.8) times as broad as long (3 ♀♀), temple somewhat receded (cf. Fig. 5B View Fig ). Oral opening round, its horizontal diameter twice longer than shortest distance between opening and eye (cf. Fig. 1C View Fig ). Propodeum on its upper part rugose (4 ♀♀, Fig. 7A View Fig ). Pterostigma issuing r proximally from its middle, second submarginal cell fairly long: 3-SR slightly longer than 2-SR (cf. Fig. 44F View Fig ). Pterostigma wide, 2.7 times longer than wide (cf. Fig. 9D View Fig ); D1 less high, 1-M 1.4 times as long as m-cu (1 ♀, cf. Fig. 11C View Fig ). First tergite less broad and somewhat broadening posteriorly (3 ♀♀, cf. Fig. 48I View Fig ). Metasoma ochre yellow (2 ♀♀).

Variable features of the ³ (11 ³³) ( Figs 1A View Fig ; 38H View Fig ; 49 View Fig D-E)

Body 2.8-3.1 mm long. Antenna somewhat longer than body and with 29-32 antennomeres. Middle flagellomeres 1.6-1.8 times as long as broad. Head in dorsal view 1.8 times as broad as long (2 ♁♁, cf. Fig. 1A View Fig ). Propodeum, pterostigma, second submarginal cell and first discal cell with similar variabilities to those of the ♀♀. First tergite broadening (cf. Fig. 49 View Fig D-E) or narrow, 1.3 times longer than broad behind (1 ♁, cf. Fig. 38H View Fig ).

Hosts

COL. Chrysomelidae : Gastroidea viridula DeGeer , Hydrothassa marginella Linnaeus , Phaedon cochleariae Fabricius , Phyllotreta nemorum Linnaeus. — LEP. Coleophoridae : Coleophora laricella Hübner , C. lutipennella Zeller.

Distribution

In Europe widely distributed.

Taxonomic position

Within the subgenus Lucobracon the species Bracon guttiger is nearest to B. grandiceps Thomson (Europe) considering their large oral opening and the less transverse to subcubic head; the two species are distinguished by the following key features:

1 (2) First tergite 1.25-1.3 times longer than broad behind; suture between tergites 2-3 less distinct; tergites 1-2 less sculptured ( Fig. 14H View Fig ). Second submarginal cell long, 3-SR 1.9 times as long as 2-SR, SR1 approaching tip of forewing ( Fig. 14F View Fig ). First discal cell less high, 1-SR-M 1.8 times as long as 1-M ( Fig. 14G View Fig ). Hind femur thick, 2.5 times as long as broad ( Fig. 14D View Fig ). Second tergite without yellow macula latero-posteriorly. ♀: 3-4 mm ................ B. (Lu.) grandiceps Thomson, 1894

2 (1) First tergite a bit broader behind than long;suture between tergites2-3distinct; tergites 1-2sculptured ( Fig. 13H View Fig ). Second submarginal cell short, 3-SR at most somewhat longer than 2-SR, SR1 reaching tip of forewing ( Fig. 13F View Fig ). First discal cell high, 1-SR-M 1.3 times as long as 1-M ( Fig. 13G View Fig ). Hind femur less thick, 3.3-3.5 times as long as broad ( Fig. 13D View Fig ). Second tergite with a pair of light yellow maculae latero-posteriorly. ♀: 3-3.1 mm .............................................. B. (Lu.) guttiger Wesmael, 1838

Bracon guttiger is near to B. sphaerocephalus Szépligeti viewing their subcubic head and dark coloured body; the two species are separated by the following features:

1 (2) First tergite a bit broader behind than long, suture between tergites 2-3 distinct, bisinuate, tergites 2-3 sculptured ( Fig. 13H View Fig ). Hind femur not thick, 3.3-3.8 times as long as broad ( Fig. 13D View Fig ). Hind claw downcurved ( Fig. 13E View Fig ). First discal cell high, 1-SR-M 1.3 times as long as 1-M ( Fig. 13G View Fig ). Oral opening large, its horizontal diameter 2.5 times shortest distance between opening and eye ( Fig. 13C View Fig ) or less large ( Fig. 1C View Fig ). Second tergite with a pair of light yellow maculae latero-posteriorly ( Fig. 13H View Fig ). ♀: 3-3.1 mm .................................................................... B. (Lu.) guttiger Wesmael, 1838

2 (1) First tergite somewhat longer than broad behind, suture between tergites 2-3 less distinct, faintly bent, tergites 1-2 less sculptured ( Fig. 15E View Fig ). Hind femur thick, 2.8-3 times as long as broad ( Fig. 15F View Fig ). Hind claw less downcurved ( Fig. 15G View Fig ). First discal cell less high, 1-SR-M 1.6 times as long as 1-M ( Fig. 15H View Fig ). Oral opening less large, its horizontal diameter 1.6 times shortest distance between opening and eye ( Fig. 7I View Fig ). Second tergite without a pair of yellow maculae ( Fig. 15E View Fig ). ♀: 3-4.5 mm ..................................................................... B. (Lu.) sphaerocephalus Szépligeti, 1901