Dioctria's picture

Sawfly (Dolerus sp)

Observed: 14th April 2010 By: DioctriaDioctria’s reputation in InvertebratesDioctria’s reputation in InvertebratesDioctria’s reputation in InvertebratesDioctria’s reputation in InvertebratesDioctria’s reputation in Invertebrates
20100414 S5 16642a
20100414 S5 16652a
Description:
Identifications
Species interactions

No interactions present.

Comments

Bill the Cat's picture

OK, I'm more convinced now

OK,

Now I've found some Dolerus pictures this looks more like it

dshubble's picture

Dolerus

There aren't many with red 'knees' but there are some (D. puncticollis, D. gonager & poss. others). I think the thorax of D. gonager is shiny rather than hairy as here which matches D. puncticollis, but without a species key, I'd stick at genus too.

Dave

Dioctria's picture

Dolerus

Yes, I did a bit of image browsing and found two or three different red-knee'd Dolerus of similar form so left it at that.

Is this an under-studied group given their size and numbers?

David

dshubble's picture

Dolerus

I might be wrong, but I suspect the problem is a lack of identification keys - I think they were covered in the 1950s RES handbooks, but these are not readily available and I imagine out of date - there is a 1981 update to part a which is available, but this doesn't cover the Tenthredinidae. There might be test keys out there somewhere...

Dave