Lissosculpta tangana yemeniticus, Riedel, 2022

Riedel, Matthias, 2022, Contribution to the knowledge of the Ichneumoninae (Hymenoptera, Ichneumonidae) of Yemen, Linzer biologische Beiträge 54 (1), pp. 275-286 : 278-281

Lissosculpta tangana yemeniticus ssp. nov. ( figs 5-7 )

M a t e r i a l e x a m i n e d: Holotype: (♁) Yemen (8117) 12 km NW Manakhah, Mal. trap, 15.IX.-22.X.2003, leg. A. v. Harten, RMNH ´03 [Leiden] . Paratypes: (7♁♁) Yemen (8117) 12 km NW Manakhah, Malaise trap, 15.IX.-22.X.2003, leg. A. v. Harten, RMNH ´03 [ RMNH and coll. Riedel], (2♁♁) Yemen (6158) Al Lahima, 17.IX.-14.XI.2001, Mal. trap, A. v. Harten, RMNH´02 [ RMNH]; (1♁) Yemen (8100) 12 km NW Manakhah, Mal. trap, 4.VIII.-15.IX.2003, leg. A. v. Harten, RMNH ´03 [Leiden and coll. RIEDEL] .

D e s c r i p t i o n: ♁. Body length 11-12 mm. Flagellum slender, with 36-38 flagellomeres, 1 st flagellomere 2.1× and 2 nd flagellomere 2.0× longer than wide, combined length 0.50-0.52× eye length, all flagellomeres longer than wide. Tyloids broadly oval, present on flagellomeres 9-21/24. Temple strongly narrowed behind eye. Ocelli large, distance between lateral ocellus and compound eye 1.0× ocellar diameter. Frons partly punctate, shining. Face and clypeus coarsely and sparsely punctate, smooth. Malar space 0.2× as long as width of mandibular base. Gena narrow, in profile 0.7× as wide as eye.

Mesosoma covered with short whitish setae dorsally and longer setae ventrally. Notaulus distinctly impressed in frontal 0.25 of mesoscutum. Mesoscutum with coarse but scattered punctures, shining. Mesopleuron and metapleuron coarsely and densely punctate; speculum smooth. Scutellum moderately elevated, about as long as wide, with lateral carina in basal 0.2-0.5. Propodeum with almost complete carination, but areae basalis and superomedia confluent. Area dentipara distinctly slanting downwards toward apex of propodeum (as in Coelichneumon). Hind femur 4.0× longer than wide. Claws simple. Areolet pentagonal, frontal distance between veins 2rs-m and 3rs-m 2-3× their width; vein 2m-cu reaching areolet distad its middle. Vein 1cu-a postfurcal. Nervellus of hind wing reclivous, intercepted in its apical 0.8.

Postpetiolus strongly widened, median field not clearly separated, with scattered punctures and very fine and superficial aciculation. Gastrocoelus triangularly impressed. Thyridium oblique, about 0.8× as wide as interval between thryidia. 2 nd tergite about as long as apically wide. 2 nd to 4 th tergites coarsely and densely rugulose-punctate; 5 th tergite with superficial punctures. Apical margin of hypopygium triangular.

Color: Flagellum black, reddish ventrally. Head black, with ± dark reddish tint. Mandible except teeth, palps, labrum, clypeus, face, whole orbits (with two narrow interruptions on vertex and malar space) ivory. Mesosoma reddish; collar, subtegular ridge and postscutellum yellowish. 1 st tergite reddish; metasoma otherwise dark reddish-brown to black, sometimes with a bluish tint. Posterolateral edges of 1 st to 3 rd tergites with ivory triangular marks which are sometimes confluent in middle. 5 th tergite with ivory apical stripe; 6 th and 7 th tergites almost entirely ivory. 2 nd to 4 th sternites ivory apically. Legs blackish; fore and mid legs including coxae and trochanters ± ivory frontally; hind coxa ± red. Pterostigma black.

R e m a r k: This new subspecies resembles the nominate species morphologically, it differs mainly by its reduced ivory coloration of mesosoma. Since the associated ♀♀ are unknown yet, this proposed subspecies of Lissosculpta tangana (KRIECHBAUMER) might represent a separated but closely related species.

D i s t r i b u t i o n: The nominate subspecies is widely distributed in Central and Southern Africa ( Ivory Coast, Guinea, Zimbabwe, Tanzania, and South Africa), the species has not been recorded from Yemen or the Arabian Peninsula before.

Figures

Figs 5-7: Lissosculpta tangana yemeniticus ssp. nov.♁ (5) habitus from lateral, (6) face from frontal, (7) head from dorsal.