markster2000's picture

Sawfly sp

Observed: 28th July 2011 By: markster2000markster2000’s reputation in Invertebratesmarkster2000’s reputation in Invertebrates
Sawfly1
Sawfly2
Sawfly3
Description:

Impressive sawfly noted on greater water parsnip on the Somerset Levels.
I know sawflies are very tricky to id, but does anyone have any idea which it may be?

Identifications
Species interactions

No interactions present.

Comments

Martin Harvey's picture

impressive

I agree it's an impressive-looking sawfly! Can't see what it could be other than a species of Tenthredo, but it doesn't quite match any of the ones I've seen before, so not sure what to make of it.

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Entomologist and biological recorder

markster2000's picture

omissa

Thanks,

I've been doing a very unscientific trawl of Tenthredo pics and think that T. omissa is closest. But doubt I'll ever get further than a 'possible'

Mark S

Martin Harvey's picture

omissa

Mark,

I asked Guy Knight of the sawfly recording scheme to look at this and he says:
"This looks like a female T. omissa. It is pretty uncommon species and a nice record but I think much more frequent in southern England than the old Benson key indicates."

So if you'd like to add T. omissa as an ID I'll agree with you!

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Entomologist and biological recorder

markster2000's picture

Thanks Martin, It's good to

Thanks Martin,

It's good to get a more unusual species, especially since it's on a v. rare plant (greater water parsnip) that we're going to reintroduce into areas where its gone locally extinct - the plan being that it will help to reinvigorate pollen/nectaring insects populations.

Mark S

Martin Harvey's picture

not T. scrophulariae

It does look similar to T. scrophulariae, but that species has yellow antennae.

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Entomologist and biological recorder