Identification of Hymenoptera (wasps, bees, ants)

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25.09.2006 13:18, BO.

Male of a solitary fold-winged wasp of the genus Eumenes.
For a more precise definition, it is necessary to compare the pubescence of the head, the base of the front legs, and at least 1-2 segments of the abdomen. Unfortunately, the image doesn't show all of this. One of the most important features is the yellow marginal border of the 2nd abdominal tergite, which is found in at least 2-3 species of this region.

Thanks! "Another, though less rich in species, but also very widespread genus Eumenes is distinguished by a funnel-shaped first segment of the abdomen and very narrow and long, almost not jagged upper jaws. The only species found in Central Europe is the pill wasp (Eumenes pomiformis), which reaches 12-15 mm in length and builds small roundish cells with a bumpy surface on thin branches, walls, etc. Cf. Saussure, " Etudes sur la famille d. Vespides. Monographie d. Gu êpes solitaires" (1852).

M. Rimsky-Korsakov. "
It turns out that more than one species ? Or is Eumenes a representative of Asia ? I'll try to find the required fragments for an exact definition.
http://photo.bov.com.ru/m_nas/oc/Eumenes_pomiformis.php - I shot Eumenes pomiformis this summer. The shape and color vary greatly.

The post was edited by BO. - 25.09.2006 14:00

Pictures:
picture: P1120370.jpg

P1120370.jpg — (128.39к)

26.09.2006 17:15, AVA

2 VO.

Well, all right, let's go through it sequentially, based on what's available.

First, there are at least 10-11 species of the genus Eumenes found in Eastern Europe.
Secondly, they differ not only and not so much in the pattern (like wasps in general), but in the details of the structure, sculpture, pubescence, etc. But sometimes you can also make a sighting determination based on the drawing.
In terms of the number, nature, and size of light spots on the propodeum and 1-2 abdominal tergites, your wasp most closely resembles E. mediterraneus Kriechb.

At the same time, the species you mentioned, E. pomiformis F., is distinguished (according to the drawing) by an almost completely black propodeum, weakly developed spots on the 1st tergite (in particular, a very narrow apical ligation), and black 5-7 or 6-7 abdominal tergites.

Finally, the link you provided to the photo "E. pomiformis" actually shows another species, namely, E. tripunctatus Christ.

This post was edited by AVA-26.09.2006 17: 17

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