Aclista scutellaris, : NIXON, 1957

Macek, Jan, 2007, Revision of Central European species of the Aclista scutellaris complex (Hymenoptera: Diapriidae), Acta Entomologica Musei Nationalis Pragae 47, pp. 211-228 : 225-226

Key to species of Aclista scutellaris species complex in Central Europe

Females

1 Antennae 14-segmented. ............................ A. scutellaris ( Thomson, 1859) complex

– Antennae 15-segmented. ...................................................... other Aclista (not keyed)

2 (1) Mandibles short ( Figs. 9, 10 , 16 ). ............................................................................... 3

– Mandibles widely overlapping, sickle-shaped ( Figs. 11-15 ). ..................................... 6

3 (2) Body slender; radial cell short, at most a little longer than marginal vein; metascutellum tuberculate to conical. ........................................................ A. angusta ( Kieffer, 1909)

– Body stout; radial cell distinctly longer than marginal vein; metascutellum at most convex. ........................................................................................................................ 4

4 (3) Malar space smooth ( Fig. 16 ). ................................... A. scutellaris ( Thomson, 1859)

– Malar space with short straight keel ( Figs. 10, 11 ). .................................................... 5

5 (4) Antennae short with smaller subquadrate subapical and large apical segment (Fig. 27). ................................................................................ A. crassistilus ( Kieffer, 1909)

– Antennae longer with submoniliform subapical segments; apical segment not exceedingly wider than the preceding one (Fig. 26). ..................... A. bitensis ( Kieffer, 1909)

6 (1) Sharp longitudinal keel between toruli present. ................ A. neglecta ( Kieffer, 1907)

– Area between toruli unmodified (keel absent). ........................................................... 7

7 (6) Malar keel feeble, straight, not prominent ( Fig. 15 ). ....... A. szelenyii ( Móczár, 1938)

– Malar keel strong, angular, prominent ( Figs. 12, 13, 14 ). .......................................... 8

8 (7) Antennae stout, with submoniliform praeapical flagellomeres (Fig. 29). ..................... ............................................................................................ A. pseudobitensis sp. nov.

– Antennae slender, with quadrate praeapical flagellomeres (Fig. 30). ............................ ................................................................................................ A. pseudosoror sp. nov.

Figures

Figs. 1-11. 1-8 – metasoma. 1 – Aclista angusta (Kieffer, 1909); 2 – A. bitensis (Kieffer, 1909); 3 – A. crassistilus (Kieffer, 1909); 4 – A. neglecta (Kieffer, 1907); 5 – A. pseudobitensis sp. nov.; 6 – A. pseudosoror sp. nov.; 7 – A. scutellaris (Thomson, 1859); 8 – A. szelenyii (Móczár, 1938). 9-10 – head, frontal view. 9 – A. angusta; 10 – A. bitensis; 11 – A. crassistilus. Scale bars: 2.0 mm (Figs. 1-8) and 0.5 mm (Figs. 9-10).

Figs. 12-24. 12-16 – head, frontal view. 12 – Aclista neglecta (Kieffer, 1907), 13 – A. pseudobitensis sp. nov.;14 – A. pseudosoror sp. nov.; 15 – A. szelenyii (Móczár, 1938); 16 – A.scutellaris (Thomson, 1859). 17-24 – fore wing, radial cell region. 17 – A. angusta (Kieffer, 1909); 18 – A. bitensis (Kieffer, 1909); 19 – A. crassistilus (Kieffer, 1909); 20 – A. neglecta; 21 – A. pseudobitensis sp. nov.; 22 – A. pseudosoror sp. nov.; 23 – A. scutellaris; 24 – A. szelenyii. Scale bars: 1.0 mm.