jeremyr's picture

Sawfly

Observed: 28th May 2012 By: jeremyrjeremyr’s reputation in Invertebratesjeremyr’s reputation in Invertebratesjeremyr’s reputation in Invertebratesjeremyr’s reputation in Invertebratesjeremyr’s reputation in Invertebrates
saw5
Description:

On brambles along the central corridor

Identifications
Species interactions

No interactions present.

Comments

jeremyr's picture

Some other points?

I'm trying to get to grips with these since finding a Hartigia in Glos. a couple of weeks ago, so I joined a sawfly forum, called Sawfly, I believe.
The feedback I had on this was that the colour looks right, that Arge spp have three segments to the antennae but the separation isn't always apparent in photographs, and that the upswept antennae is typical of Arge spp
Any thoughts on these points would be most welcome
Jeremy

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DavidNotton's picture

Arge

no the colour is wrong, Arge cyanocrocea is a darker orange and has a distinct dark cloud on the wing. The antennae are wrong because the have a multi-segmented flagellum, not a one segmented flagellum. (Flagellum is the part of the antenna without the basal two segments, so an antenna with a one segmented flagellum is a three segmented antenna). Do compare this picture with other Arge on iSpot.