Microchelonus pappi Tobias, sp. n. (Fig. 12-17).

Female. 3.2 mm. Head wider than mesonotum (6:5), roundingly narrowed behind eyes, half as long as wide; occiput concave, length equal to transverse diameter of eye; ocelli in obtuse triangle, base across ocelli greater than distance from ocellus to eye, distance between posterior ocelli 4 times diameter of one of them; eye oval, longitudinal diameter 1.6 times transverse diameter, 2.4 times height of gena, somewhat less (29:32) than width of face; clypeus along lateral margins evenly rounded, height a little less than distance between tentorial pits (6:7) and 0.7 height of face; face dorsally between antennae weakly carinate; proboscis slightly protruding, length of maxillary palpi equal to long diameter of eye. Antenna as long as head and thorax together, 16-segmented, weakly thickened toward tip, width of basal segment 0.4 its length and 2.5 times width of 1st flagellar segment; latter 3 times as long as wide; segments in apical part of flagellum quadrate, transverse, or as wide as long. Thorax 1.7 times as long as wide; notauli weak; prescutellar groove coarsely crenulate, 1/3 as long as scutellum; propodeum dorsally much shorter than posterior declivity, lateral teeth weak, in middle hardly developed; transverse ridge distinct only in middle; longitudinal ridges distinct in middle of dorsal surface between them at base of propodeum with toothlike carinae. Wings 0.9 as long as body foremargin of radial cell 2/3 as long as pterostigma; 2nd r-m cell a little narrower than radial cell; 2nd section of radial vein 2/3 as long as 1st section, 1/3 length of 3rd section, and half as long as 1st r-m vein; nervulus removed from basal vein by half its own length. Femora 3.5 times as long as wide; inner spur of hindtibia hardly more than 1/3 as long as hindbasitarsus; 2nd segment of hindtarsus 2/5 as long as basitarsus and equal to length of 5th segment. Abdomen elongate-oval, turned forward below at tip of about 1/11 of length of abdomen; 2.3 times as long as wide and 4 times its height. Ovipositor slender, curved upwards, and as long as hindfemur.

Body densely and rather finely rugulose-punctate, matt; face along eyes weakly longitudinally, in middle weakly transversely rugulose; occipital dorsum finely rugulose parallel to hindmargin; mesonotum before scutellum reticulate-rugulose; scutellum weakly punctate, shining; abdomen in basal half with fine tortuous longitudinal rugulosity, apical half non-rugulose, but granulate. Body black; legs, except coxae, yellowish brown; abdomen yellowish red; wings pale, pterostigma and veins forming radial and 2nd r-m cells brown; veins in basal half of wing yellowish.

Holotype: ♀, 'USSR, Armenia, Aigerlich, 13.VIII.1976 (Vasarhelyi)'. Paratypes: 6 ♀, same data.

Diagnosis. This species differs from other Palearctic species of Microchelonus in its unusual combination of black head and thorax and pale abdomen. It may be close to M. pectoralis Tobias, from which it differs, besides in coloration, in narrowed rather than widened head behind the eyes.

The type material, including the holotype, is preserved in the Hungarian National Museum of Natural History in Budapest, 2 paratypes in the Zoological Institute of the Academy of Sciences of the USSR in Leningrad.

This species is named after Jeno Papp.