Syzeuctus albopictus Kang & Lee, 2020

Kang, Gyu-Won, Kolarov, Janko & Lee, Jong-Wook, 2020, Review of the genus Syzeuctus (Hymenoptera, Ichneumonidae, Banchinae) from South Korea, Journal of Hymenoptera Research 80, pp. 17-30 : 17

Syzeuctus albopictus Kang & Lee sp. nov.

Fig. 1

Material examined.

Holotype, Male, South Korea: [Ulsan] Ulju-gun, Sangbuk-myeon , Mt. Sinbulsan , 9 Oct. 2006, S. J. Park (GEI) leg.

Description.

Male. Body 13.0 mm in length (Fig. 1A ), fore wing 8.0 mm in length.

Head in dorsal view with temple narrowed at an angle of more than 45° (Fig. 1C ), strongly rounded. Face strongly convex, densely and coarsely punctate, with strong median swelling and two lateral swellings above clypeal fovea. Clypeus convex, with long and thin setae; convex apically; clypeal fovea small, open. Mandible slightly tapered, upper tooth slightly longer than lower tooth; lower ridge lamelliform. Maxillary palp with five segments. Frons smooth and concave with small dense punctures. Vertex more sparsely punctate than face. Occipital carina complete, slightly sinuous, joining hypostomal carina at mandibular base. Temple polished and convex with fine punctures. Malar space about 1.3 times as long as basal mandibular width. Inner margin of eye parallel. Antenna filiform with 49 flagellomeres; first flagellomere 3.8 times as long as its width, 1.5 times as long as second flagellomere.

Mesosoma with dense and long setae. Pronotum with fine dense rugoso-punctures. Mesopleuron uniformly punctate except medially where it is polished and impunctate, punctures bigger than those on pronotum; postpectal carina absent. Metapleuron with dense and coarse punctures. Submetapleural carina complete, anterior half very strongly developed, rectangular. Mesoscutum densely irregularly punctate, notaulus weakly present (Fig. 1D ). Scutellum, in profile, strongly convex, densely punctate. Propodeum in dorsal view rather elongate, closely punctate tending to rugose medially, with long and dense setae (Fig. 1E ); spiracle of propodeum oval; without posterior transverse carina. Legs slender. Fore tibial spur sinuate. Fore and mid tarsal claws pectinate. Ratio of hind tarsal segments are 5.0:2.5:1.7:1.0:1.3. Hind tarsal claw not pectinate. Hind wing with eight hamuli.

Metasoma elongate with shallow and fine punctures (Fig. 1H ). First tergite 2.5 times as long as posterior width, without lateral longitudinal carina (Fig. 1F ). Second tergite coriaceous, 1.3 times as long as posterior width.

Color whitish yellow.

Head whitish yellow with brown marks. Mandibular teeth brown (Fig. 1B ). Frons and vertex with brown mark around ocellar triangle. Antenna yellow. Mesoscutum brown with triangular whitish yellow spot on its anterior on both sides. Scutellum yellowish brown. Postscutellum whitish yellow. Anterior margin of pronotum dorsally with brown mark. Mesopleuron with yellowish brown mark. Propodeum in dorsal view with elongate brown mark on each side of its anterior part (Fig. 1E ). Legs entirely whitish yellow. Hind tarsal claw bright brown. Wings hyaline (Fig. 1G ). Metasoma whitish yellow with yellowish brown coloration posteriorly (Fig. 1H ).

Female. Unknown.

Distribution.

South Korea (new record).

Remark.

This species is easily distinguished by its very bright body color and very long malar space, 1.3 times the basal mandibular width.

Figures

Figure 1. Syzeuctus albopictus Kang & Lee, male A habitus in lateral view B head in frontal view C head in dorsal view D thorax in lateral view E propodeum in dorsal view F first tergite in dorsal view G wings H abdomen in dorsal view. Scale bars: 1.0 mm (A), 0.2 mm (B-F), 0.5 mm (G, H).