Bee hotel:
Remarkable hotel guest
Wasp beetle ♀︎

Last update: 30 November 2019
OBSERVATION:
2019-V-24

A remarkable appearance on the bee hotel, the Wasp beetle (Clytus arietis) [1, 2], a beetle species from the Cerambycidae family.

Wasp beetle ♀︎ (Clytus arietis)
Wasp beetle ♀︎ (Clytus arietis)

The beetle spend some hours walking around on the bee hotel. I suspect it is a female because the tip of the abdomen, which I interpreted as the egg-laying apparatus, was extended and she seemed to be using the organ to test sites for ovipositioning. It was put in cracks and in the holes of the hotel.

Wasp beetle ♀︎ (Clytus arietis) with extended egg-laying apparatus
Wasp beetle ♀︎ (Clytus arietis) with extended egg-laying apparatus

She inspected cracks in the tree trunks, the bark and once even went all the way into a tunnel.

Wasp beetle ♀︎ (Clytus arietis) with extended egg-laying apparatus

Besides the front of the trunks the beetle was very much interested in the outside as well and disappeared regularly for a longer time between the trunks. Each impairment in the bark was inspected with the egg-laying apparatus.

Wasp beetle ♀︎ (Clytus arietis)
Wasp beetle ♀︎ (Clytus arietis)

A number of times she positioned next to a hole and lowered her abdomen inside, but in all cases I did not find any eggs on closer inspection.
It was obvious that she came to the hotel deliberately because two times she was chased away by a bee and dropped to the ground, only to re-emerge and fly up to the hotel again.
Towards the evening the beetle dissappeared between the trunks and I didn’t observe her afterwards.


References

1 Cerambycidae, Longhorn beetles (Cerambycidae, Coleoptera) of the West Palaearctic region presented by Michal Hoskovec, Petr Jelínek and Martin Rejzek

2 Nederlands Soortenregister

Leave a Reply

Your email address will not be published. Required fields are marked *