Coleocentrus excitator

Description

C. exitator is a large and easily recognizable species. The body is black, face with yellow marks. In females, all coxae are black and the hind tarsi are ivory apically, a unique combination among northern European Coleocentrus species. Males also have ivory hind tarsi and can be best differentiated from C. soleatus by the yellowish-red hind trochanters. The areolet of the forewing is closed and the nervellus of the hind wing is intercepted in the upper 0.25. The notauli are distinct, and the claws lack subapical teeth. The ovipositor is longer than the abdomen, and as in all other northern European Acaenitines, the hypopygium is greatly elongated in females.

Ecology

C. exitator is a parasitoid of large Cerambycid beetles. Known hosts include Acalolepta luxuriosa, Ergates faber, and Monochamus grandis.

Distribution

C. exitator is by far the most reported species of Acaenitinae in northern Europe. It appears to be doing well, in contrast to many other Acaenitines, and is listed as least concern (LC) in Finland. Globally, it has a wide palearctic distribution.

References

ZWAKHALS, C. J., 1989. THE ACAENITINAE FROM THE NETHERLANDS AND THE HOST OF ACAENITUS DUBITATOR (HYMENOPTERA: ICHNEUMONIDAE). - EN7: BER., AMST:49 (2):21-25.

Varga, A., (2013). A review of the subfamily Acaenitinae Förster, 1869 (Hymenoptera, Ichneumonidae) from Ukrainian Carpathians. Biodiversity Data Journal 1: e1008. doi: 10.3897/BDJ.1.e1008

SLU Artdatabanken (2024). Artfakta: Acaenitinae. https://artfakta.se/taxa/1000026 [2024-07-03]

Finlands Artdatacenter (2024). LAJI.FI: Acaenitinae. https://laji.fi/sv/taxon/MX.308519 [2024-07-03]

BugWeb

Coleocentrus excitator

Keys

Gallery

References