An icneumon wasp about 1.5 cm found on cauliflower. Could it be parasitising cabbage white caterpillars?
No interactions present.
Pale region in middle of antennae, but clear yellow bands on legs and abdomen, make it Stramentarius.
The one that parasitises caterpillars of White butterflies is a Braconid, Apanteles glomeratus, which is 3mm long.
On a second look, the abdomen tip IS cream not yellow, so suspiciosus looks right.
Hi mark, how are you able to rule out the many related species of ichneumon? For instance, in the only key I have (which is old and not very easy to use), suspiciosus is distinguished from septentrialis on minute characters of the hind coxae, and I think there are other similar species as well. Not trying to be awkward, but I'm always intrigued as to what information people are using to suggest names for this very species-rich group.
Entomologist and biological recorder
Lat/Lng: 54.6, -5.8
OS grid ref: NW5736