Anoplius concinnus
| Anoplius concinnus | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Anoplius concinnus | ||||||||||||
| ( Dahlbom , 1843) |
Anoplius concinnus is a Hymenoptera from the family of wasps (Pompilidae).
features
The wasp reaches a body length of 7.5 to 11.5 millimeters (females) or 6 to 8.5 millimeters (males). Her body is colored black. The second part of the antennae is 4.5 times as long as it is thick at the end. The dark pterostigma is larger than that of the related species. The tarsi have only short comb spines. The species is easy to confuse with the other black colored species of the genus Anoplius .
Occurrence
The species is distributed from North Africa across Europe to Central Asia. It populates the banks of water, open sandy habitats and, in the human settlement area, also, for example, joints between paving stones. The animals fly in two generations from late May to early October. It is unclear whether a partial third generation will occur. They are rather rare in Germany, only to be found more frequently in the north.
Way of life
The males of Anoplius concinnus are protandric . Immediately after hatching in spring, the males patrol in search of females in the area of last year's nests. These are fertilized a short time after hatching. After a period of inspection, you start building the nest with test digs. Finally, a passage up to nine centimeters deep is dug, with the sand lying in a funnel shape around the entrance. Unusual for wasps, one to a maximum of seven cells are created per nest. A female can lay up to three eggs per day. While the nest is being built, the female sleeps in the unlocked nest. The nest is also not closed during the search for food that follows the nest building. The brood is supplied with wolf spiders (Lycosidae). On average, one spider is entered into the nest every 50 minutes, with a maximum of three per day. One spider is laid together with one egg per cell. The prey is transported either carried forward or pulled backwards. They are first placed in front of the nest entrance. The nest is then checked for up to half an hour and, if necessary, repaired before the prey is dragged into the nest by the spinneret. If the temperatures are ideal, the females fly until about 7:20 p.m. Finally, the nest is closed with pebbles and then scraped over with sand, which is tamped down with a hunched abdomen. The second generation develops from the end of April and needs just under 30 days to hatch. The overwintering occurs as a resting larva ( Praepupa ). It is not uncommon for conspecifics to fight for their nests and so females conquer the nests of competitors.
supporting documents
literature
- Rolf Witt: Wasps. Observe, determine. Naturbuch-Verlag, Augsburg 1998, ISBN 3-89440-243-1 .