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Pyrausta ID

Posted: Sun Aug 15, 2021 10:15 pm
by Susanne
DF619B2C-A2F0-4E39-BAE8-D6228C8593A3.jpeg
Are these 2 moths both Pyrausta aurata or is the first one Pyrausta purpuralis?

Re: Pyrausta ID

Posted: Wed Aug 25, 2021 10:14 am
by GasMacc1
I think they are both Pyrausta aurata.

The book "Common Micro-moths of Berkshire" (which is free to download) has a useful comparison [page 107] of the two species. Using that text, I would pick out from your photos:
  • the prominent spot on the forewing at two-thirds has only tiny dots (photo 2) or a thin squiggle (photo 1) towards the dorsum. The "thin squiggle" lacks a smooth curve.
  • the basal half of the hindwing (upper-side) is clear of markings in both photos.
The book mentions that Pyrausta purpuralis has a narrow, almost straight, sub-terminal line on the underside (which is absent in Pyrausta aurata).

Re: Pyrausta ID

Posted: Sun Oct 03, 2021 3:41 pm
by Susanne
Thank you.