Eccoptosage nigrifemur, Riedel, 2023

Riedel, Matthias, 2023, Contribution to the knowledge of the Ichneumoninae (Hymenoptera, Ichneumonidae) from Maritime Southeast Asia, Zootaxa 5363 (1), pp. 1-94 : 52

Eccoptosage nigrifemur nov. sp.

( Figs 21A–C )

Holotype. (♀) Malaysia: SE Sabah, nr Danum Valley Field C, Mal. trap 7, c 150 m, 21–25.iii.1987, C. van Achterberg, RMNH´1987 (Leiden)

Etymology. The species name refers to the black hind femur.

Description. ♀. Body length 12.3 mm.

Head. Flagellum with 40 flagellomeres, slightly lanceolate; 1 st flagellomere 4.0 × longer than wide, widest flagellomere 1.4 × wider than long. Temple rather short, strongly and roundly narrowed behind eye. OED 1.6 × and OOD 0.8 × ocellar diameter. Frons concave, with microsculpture, dorsally with some superficial punctures. Face densely but superficially punctate medially, almost smooth laterally. Clypeus large, flat, with sparse superficial punctures; apical margin sharp, moderately rounded (fig. 21A). Mandible seen from frontal sickle-shaped, with two teeth, ventral tooth smaller and strongly bent inwards (fig. 21A). Malar space 0.9 × as long as width of mandibular base. Gena with fine dense punctures. Genal carina reaching mandibular base.

Mesosoma . Densely covered with setae; setae blackish on mesoscutum and scutellum, otherwise pale. Mesoscutum finely punctate, dull. Notaulus impressed in frontal 1/4 of mesoscutum. Mesopleuron rugose- punctate and striate ventrally, punctate dorsally; speculum with fine punctures. Metapleuron ± striate. Juxtacoxal carina present. Scutellum pyramidal, slightly longer than wide, rugosely punctate, with strong lateral carina forming slightly raised lamella apically. Propodeum completely carinated, punctate, with strong apophysis (fig. 21B); spiracle slit-shaped. Area superomedia slightly longer than wide; costula reaching at its basal 0.25. Legs slender; hind coxa punctate, without scopa. Hind femur 5.9 × longer than wide. Claws simple, strongly bent (by 90°) apically. Areolet pentagonal, frontal distance between veins 2rs-m and 3rs-m 2.0 × their width. Vein 1cu-a postfurcal by 2.0 × its width.

Metasoma. Postpetiole moderately widened, almost smooth. 2 nd tergite about as long as wide. Gastrocoelus narrow and elongate, with some fine ridges. Thyridium slightly oblique, 0.7 × as wide as interval between thyridia (fig. 21C). 2 nd and 3 rd tergites finely and densely punctate, ± dull; following tergites with superficial punctures and shining. Ovipositor sheath reaching behind metasomal apex by length of 2 nd hind tarsomere.

Colour. Red. Flagellum black, flagellomeres 7–12 ivory dorsally. Palps pale yellow. Mandible except teeth, clypeus and face reddish-yellow; facial orbit yellowish. Mid tarsus ± brownish; hind leg except red hind coxa blackish. Wings yellowish; pterostigma ochreous.

♀ unknown.

Remarks. This new species differs from other Eccoptosage species with entirely red mesosoma and metasoma by its black hind legs.

Distribution. Only known from Borneo.

Figures

FIGURE 21. Eccoptosage nigrifemur n. sp. HT ♀. A face, frontal view, B propodeum, dorsal view, C basal tergites, dorsal view.