Erromenus atrator Kasparyan, 2020

Kasparyan, D. R., 2020, Two new species of the genus Erromenus Holmgren, 1857 (Hymenoptera: Ichneumonidae: Tryphoninae) from the Siberia and Russian Far East, Far Eastern Entomologist 419, pp. 1-8 : 2-4

Erromenus atrator Kasparyan , sp. n.

http://zoobank.org/NomenclaturalActs/ 29C3AB90-269D-4E13-B4C7-8A3419B20913

Figs 1–4

MATERIAL EXAMINED. Holotype – ♀, Russia: Primorskiy Territory , 15 km

NE Partizansk, nr. Frolovka, 7.VII 1996, S. Belokobylski leg. [ ZIN]. Paratypes.

Russia: Primorskiy Territory, Khasan District: SW of Barabash, stream Narva,

5.VIII 1978, 1♀ (Kasparyan leg.); Reserve “Kedrovaya Pad′”, 24.VII 1982, 1♀

(Kerzhner leg.) [ ZIN].

DIAGNOSIS. FEMALE. Erromenus atrator sp. n. differs from other species of the genus by the completely black body, mid and hind legs ( Fig. 1 ), and by the areola and basal area of the propodeum which merged into a large semicircular area, about 0.65 as long as wide ( Fig. 3 ). MALE unknown.

DESCRIPTION. FEMALE (holotype). Body length about 7.5 mm. Fore wing

5.5 mm, flagellum 4.5 mm long, with 27 flagellomeres. Temples just beyond the eyes subparallel, in posterior 0.5 roundly narrowed to occipital carina. Upper margin of antennal socket raised as a flange about 0.25 times as high as the scape is wide;

frons weakly impressed near the antennal sockets. Face moderately convex, almost

2 times as wide as long, with rather coarse even punctures in median part, with fine punctures at lateral sides, and with polished impunctate small area above clypeal fovea. Clypeal foveae large, deep, but not extending to malar space, covered with very fine inconspicuous pubescence; clypeus between foveae separated from face by a strong groove. Malar space short, 0.33 times as long as the basal width of mandible. Minimal length of the temple 0.6 times as long as the transverse diameter of eye. Occipital carina at the level of lower margin of eye incurved to the hypostomal carina. Oral carina (the portion of hypostomal carina between occipital carina and mandible) slightly higher than occipital carina, and 0.5 times as long as the basal width of mandible.

view; 3 – propodeum, dorsal view; 4 – apex of metasoma, lateral view.

Pronotum with strong vertical epomia; its lateral portion beyond epomia evenly coarsely punctate. Mesopleuron smooth, in lower half with rather large moderately dense punctures. Mesoscutum on median lobe with rather fine punctures separated in average by 1–2 their diameter; its lateral portion before the tegulae level and central portion before prescutellar groove covered with coarse punctures. Mesonotal flange at its posterior margin 0.5 times as wide as tegula. The lateral carina of scutellum extending about 0.6 times its length. Scutellum with large sparse punctures,

almost impunctate at the apex.

Combined basal area and areola of propodeum unusually broad, 0.66 times as long as wide, smooth, semicircle ( Fig. 3 ). Apical area of the propodeum large,

hexagonal, with the strong rugosity and with obscured by rugosity one or two irregular median vertical carina.

Fore wing with an oblique areolet; nervulus strongly postfurcal and inclivous;

postnervulus intercepted on lower 0.3. Nervellus in hind wing broken at its lower

0.25. Fore tarsal claws of female densely pectinate to apex, with about 7 teeth; longest spur in middle tibia 0.75 times as long as its first tarsomere; hind femur 3.1 times as long as wide.

Terga 1 and 2 of metasoma respectively 1.15 and 0.55 times as long as wide on posterior margin; tergite 1 with distinct basolateral corners; its dorsal longitudinal carinae expand to its posterior 0.28. Tergite 2 subpolished with weak traces of smoothened granulation, covered with moderately fine punctures, its basal corners mat and cut off by superficial oblique grooves extending about to the spiracles;

gastrocoeli present at extreme base of the tergite. Terga 6 and 7 almost completely retracted under the previous tergite; their visible hind margin apically with tuft or brush of the setae ( Figs 1, 4 ). Ovipositor sheath upcurved, wide, its setiferous part about 0.7 times as long a hypopygium; apex of ovipositor sheath emarginate with short tooth on lower corner of emargination. Ventral valve of ovipositor projecting beyond tip of dorsal valve about 0.3 times as long as length of setiferous part of sheath (in all studied specimens).

Body almost entirely black, except for lower 0.7 of dark reddish brown clypeus,

fore femur, tibiae and tarsi; middle tibiae and tarsi blackish brown; spurs of middle and hind tibiae and plates in base of fore wing yellowish.

ETYMOLOGY. The name derived from the Latin atratus (black), refers to the black color of a new species.

Figures

Figs 1–4. Erromenus atrator sp. n., ♀, holotype: 1 – habitus, lateral view; 2 – head, frontal