Notoplaylabus birmanicus Heinrich, 1974

Riedel, Matthias, 2023, Contribution to the knowledge of the Ichneumoninae (Hymenoptera, Ichneumonidae) from Maritime Southeast Asia, Zootaxa 5363 (1), pp. 1-94 : 6-7

Notoplaylabus birmanicus Heinrich, 1974

Material. Indonesia: N Sumatra, Ketambe , c 400 m, near N.P. Gn. Leuser, Mal. trap, 1 ♂ x.1995, Y. van Nierop & C. van Achterberg ; Indonesia: SW Sulawesi, Gn. Bulusaraung, nr. Camba, Malawa , Mal. trap 2, 1 ♂ 7.ii.–28.iii.1995, c 750 m, C. van Achterberg & Y. Yasir ; Malaysia: SW Sabah, nr Long Pa Sia, Payaka-laba , 2 ♂♂ 25.xi.–1.xii.1987, c 1010 m, Mal. trap 16, C. van Achterberg (all in Leiden) .

Description. ♂. Body length 5.5–7.0 mm.

Head. Flagellum with 29–32 flagellomeres, bristle-shaped; 1 st flagellomere 3.8–4.6 × longer than wide. Tyloids indistinct. Temple short, strongly and roundly narrowed behind eye. OED 0.9–1.0 × and OOD 1.6–1.7 × ocellar diameter. Frons smooth ventrally, with microsculpture and fine sparse punctures dorsally. Face densely punctate, with transverse striation medially. Clypeus moderately convex, with sparse punctures; apical margin sharp and slightly impressed medially. Mandible long and narrow, with two teeth, ventral tooth much smaller than dorsal one and distinctly turned inwards (by 45°). Malar space 1.1 × as long as width of mandibular base. Genal carina reaching hypostomal carina away from mandibular base, ± indented sub-basally.

Mesosoma . stout. Antero-ventral margin of pronotum with distinct edge. Notaulus strongly impressed in frontal 3/4 of mesoscutum, with transverse ribs. Mesoscutum coarsely rugose-punctate; rugose apico-medially. Sternaulus distinctly impressed in frontal 0.7 of mesopleuron, with transverse ribs. Epicnemial carina low, dorsally reaching subtegular ridge. Mesopleuron and metapleuron coarsely rugose, sometimes ± striate. Scutellum moderately elevated, coarsely rugose, with complete lateral and apical carina, lateral carina with distinct denticular elevation at scutellar base. Propodeum completely carinated, coarse reticular rugose with strong blunt apophysis. Spiracle small and roundish. Area superomedia halfmoon-shaped, 1.4 × wider than long; costula reaching its middle. Area petiolaris transversally striate. Legs stout. Hind coxa densely punctate. Hind femur densely punctate, 2.7–2.9 × longer than wide. Claws simple. Areolet almost quadrangular, frontal distance between veins 2rs-m and 3rs-m 1 × their diameter. Vein 1cu-a interstitial or slightly postfurcal by 2 × its width.

Metasoma. Petiole slightly wider than high. Postpetiole moderately widened, with microsculpture medially, punctate laterally; median field not separated. Gastrocoelus impressed, with fine longitudinal ridges. Thyridium transverse, about as wide as the interval between thyridia. 2 nd tergite about as long as wide. 2 nd and 3 rd tergite densely rugose-punctate; 4 th tergite densely punctate; following tergites with superficial punctures. Hypopygium unmodified; apical margin straight.

Colour. black. Scape and pedicel red ventrally; flagellum black, 1 st flagellomere ± yellowish basally. Palps and mandible except teeth yellowish; clypeus reddish in ♂♂ from Sabah, black in ♂ from Sulawesi. Tegula reddish. Hind edge of pronotum and sometimes subtegular ridge ivory. In ♂ from Sulawesi ventral edge of pronotum and apophyses with ivory spots. Apical spot of scutellum reddish or ivory. Tergites reddish-brown to black, petiole reddish-yellow in ♂♂ from Sabah; apical margin of 6 th tergite and large median spot of 7 th tergite ivory. Legs red; in the ♂ from Sulawesi hind leg entirely blackish; in ♂♂ from Sabah hind femur brown in apical 0.2; hind tibia brown, with diffuse subbasal reddish ring and hind tarsus brown. Wings hyaline; pterostigma brown.

Remarks. There are slight colour differences between the available ♂♂ from Borneo and from Sulawesi, but their morphology is similar. They might represent different subspecies of this widespread species, but the ♀♀ from these isles are still unknown.

Distribution. Widespread in the Oriental region, known from Sumatra ( Riedel 2011), new records for Borneo and Sulawesi.