Pemphredon lethifer
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Digger wasp Pemphedon lethifer (Shuckard 1837) |
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| Scientific name | ||||||||||||
| Pemphredon lethifer | ||||||||||||
| ( Shuckard , 1837) |
Pemphredon lethifer is a Hymenoptera from the family of Crabronidae .
features
The wasp reaches a body length of 6 to 8.5 millimeters (females) or up to 5 to 8 millimeters (males). The species belongs to the lethifer group, for which the species status of the individual species is still unclear. Determining them is correspondingly difficult. The front edge of the clypeus is blunt, the mesonotum is weakly punctured. The third part of the antennae is a maximum of twice as long as it is wide. Males can only be identified with certainty from their genitals. They have tyloids on the fifth to eleventh antennae.
Occurrence
The species is distributed in Morocco, Europe to 61 ° north latitude and Asia, east to Japan, and in the United States. It colonizes different habitats in which suitable nesting opportunities are available. The kind flies with a partial second generation from May to September. It is common in Central Europe.
Way of life
The females lay their nests in the feeding tunnels of beetles, in stems containing marrow , rotten wood and also in plant galls caused by stalk flies of the Lipara genus . It also often happens that the nests of other species, such as the genus Trypoxylon , are built over or at least their supplies are stolen. If there is enough space, not only linear structures but also branched nests are created. The brood is supplied with tube aphids (Aphididae). These are grabbed with the front and middle pair of legs, anesthetized with a stitch and then transported to the nest with the mandibles. Each female creates up to three to four nests, which consist of an average of 6 to 12 and a maximum of 43 cells. A cell is two to five millimeters in diameter and eight to nine millimeters long. The new generation hatches after about 30 days. The eggs of these females are ripe after about a week, only then are aphids caught. In total, a female has 38 to 67 eggs in the ovaries and lives for about ten weeks. Omalus aeneus and Omalus auratus have been identified as cuckoo wasps .
supporting documents
literature
- Rolf Witt: Wasps. Observe, determine. Naturbuch-Verlag, Augsburg 1998, ISBN 3-89440-243-1 .