Pantolyta Foerster, 1856

Chemyreva, V. G. & Kolyada, V. A., 2019, Review of the Pantolyta genus (Hymenoptera: Diapriidae: Pantolytini) from Russia, with description of a new species, Zoosystematica Rossica (China) 28 (1), pp. 163-176 : 164

Genus Pantolyta Foerster, 1856

Pantolyta Foerster, 1856: 128 , 130, 135

Type species Pantolyta atrata Foerster, 1861 .

Six of seven previously known Palaearctic species of Pantolyta (except P. stylata ) are found to occur in Russia, and one more species is described as new to science. Three specimens were found belonging to an undescribed species. Additional distributional records are given for several neighboring countries. Biology and hosts are unknown for all here included species.

Key to Palaearctic species of Pantolyta

Female

1. Pterygopolymorphic species, in winged morphs radial cell open (Figs 47, 48, 56, 62).............. 2

– Only macropterous species with radial cell closed ( Figs 18, 24, 33, 40).......................... 5

2. Axillar depression with verriculate tubercle (Fig. 46, arrow); antennal shelf weakly prominent, head not nasiform ( Fig. 49)........ P. pallida Kieffer

– Axillar depression without verriculate tubercle; antennal shelf distinctly prominent, head nasiform ( Figs 4, 50, 58)............................... 3

3. Eyes small, largest diameter of eye 0.5 times as long as malar space (eyes small both in micro- and macropterous specimens)......... P. stylata Kieffer

– Eyes large, largest diameter of eye at less 0.7 times as long as malar space (eyes quite small only in micropterous specimens)........................ 4

4. Temples in dorsal view parallel ( Fig. 4)....................................... P. atrata Foerster

– Temples in dorsal view receding ( Fig. 50)................................... P. semirufa Kieffer

5. Pronotal collar and pronotal shoulders smooth, epomia obsolete ( Figs 38, 39); A1 with sharply pointed flange ( Fig. 41, arrow)................................................ P. nixoni Macek

– Pronotal collar rugose, with transverse keel; pronotal shoulders angular; epomia present ( Figs 13, 15, 25, 34); A1 without apical flange ( Figs 21, 23, 31) ............................................. 6

6. Axillar depression with verriculate tubercle ( Figs 13, 16, arrows); anterior part of T2 and S2 narrower than petiole ( Fig. 19)........ P. elegans sp. nov.

– Axillar depression without verriculate tubercle; anterior part of T2 and S2 slightly wider than petiole ............................................. 7

7. Genae in frontal view convex ( Fig. 22); plicae strongly produced posteriorly........................................... P. hadrosoma Macek

– Genae in frontal view convergent ( Fig. 30); plicae weakly produced posteriorly ( Fig. 35)................................... P. marginalis (Kieffer)