Cerceris
Bienenjagende node wasp
The nodes wasps ( Cerceris ) are a genus of wasps grave ( Spheciformes ) from the family Crabronidae. The genus is distributed worldwide and includes about 850 species. In the Palearctic over 200 species are represented in Europe are found 50 species.
Features
The Cerceris species are medium to large in size and have characteristic constricted abdominal segments and a short, gnarled first abdominal segment. Most of the grave wasps have a distinct yellow or whitish banding. The body surface is different strong, but noticeable point-like structure. In the forewing the second Submarginalzelle is stalked. The males have a yellow face and an equally colored faceplate ( clypeus ), these areas are shown in yellow in the females. Both the males and the females have a highly trained Pygidialfeld on the last abdominal segment.
Lifestyle and deposits
The heat-loving animals mostly inhabit the warm and hot zones of the world, only a few species are also found in the cooler north. The females lay their nests in loose sand or in solid ground. Often you can find them in large groups on roadsides or sunlit slopes. Due to the enlarged Pygidialfeld the females can carry the nest excavation better outside. Mainly the sand is transported backwards but pulling between the head and thorax. The excavated material is piled up on a hill to the funnel-shaped nest entrance. These hills can be seen only weakly depending on Cerceris - type and slope of the land, or absent. Will leave the nest, the female circles as in the genus Philanthus for orientation several times at increasing intervals around the nest. The prey is introduced directly in flight in the nest. In the central European species, these are depending on Cerceris - kind to Firefly or smaller bee species.
Parasitoids of the genus are different flies and wasps gold, especially of the genus Hedychrum.
Species ( Europe)
- Cerceris abdominalis (Fabricius, 1804)
- Cerceris albicolor Shestakov 1918
- Cerceris albofasciata ( Rossi 1790)
- Cerceris Amathusia Beaumont 1958
- Cerceris angustirostris Shestakov 1918
- Cerceris arenaria (Linnaeus 1758)
- Cerceris bellona Mercet 1914
- Cerceris bicincta Klug 1835
- Cerceris boetica ( Perez 1913)
- Cerceris bracteata Eversmann 1849
- Cerceris bucculata A. Costa 1860
- Cerceris bupresticida Dufour 1841
- Cerceris cheskesiana Giner Mari 1945
- Cerceris circularis (Fabricius, 1804)
- Cerceris dispar Dahlbom 1845
- Cerceris dorsalis Eversmann 1849
- Cerceris dusmeti Mari Giner 1941
- Cerceris elegans Eversmann 1849
- Cerceris eryngii Marquet 1875
- Cerceris Euryanthe carbon 1888
- Cerceris eversmanni Schulz 1912
- Cerceris fimbriata ( Rossi 1790)
- Cerceris flavilabris (Fabricius 1793)
- Cerceris flaviventris Vanderlinden 1829
- Cerceris fodiens Eversmann 1849
- Cerceris hortivaga carbon 1880
- Cerceris ibericella Leclercq 1979
- Cerceris impercepta Beaumont 1950
- Cerceris interrupta ( Panzer, 1799)
- Cerceris lunate A. Costa 1869
- Cerceris maculicrus Beaumont 1967
- Cerceris media Klug 1835
- Cerceris odontophora Schletterer 1887
- Cerceris quadricincta ( Panzer, 1799)
- Cerceris quadrifasciata ( Panzer, 1799)
- Cerceris quinquefasciata ( Rossi, 1792)
- Cerceris rossica Shestakov 1914
- Cerceris rubida ( Jurine 1807)
- Cerceris ruficornis (Fabricius 1793)
- Cerceris rutila Spinola 1839
- Cerceris rybyensis (Linnaeus 1771)
- Cerceris sabulosa ( Panzer, 1799) Cerceris sabulosa
- Cerceris somotorensis Balthasar 1956
- Cerceris specularis A. Costa 1869
- Cerceris spinipectus F. Smith in 1856
- Cerceris stratiotes Schletterer 1887
- Cerceris tenuivittata Dufour 1849
- Cerceris tuberculata ( Villers 1787)