2022 April 18
Jochen Möhr writes, from Metchosin: Eupithecia ravocostaliata – I presume. Jeremy Tatum replies: E. ravocostaliata is one of our largest pugs and is distinctively marked. One would think that it would be easy to identify. Unfortunately, it has a look-alike cousin – E. nevadata. I’m sure there must be an obvious difference between the two, but I have not yet figured out a completely reliable way of telling which is which. If anyone out there knows, please let us know. Until then, it’ll have to remain an either/or.
Eupithecia ravocostaliata/nevadata (Lep.: Geometridae) Jochen Möhr
Note added later, by Libby Avis:
I think this one is probably Eupithecia nevadata – lighter brown & larger triangular shaped brown mark along the top (costa) of the wing opposite the discal spot. Like this one on Bug Guide:
Jeremy Tatum adds: It’s well worth having a look at the Bug Guide site that Libby gives – the image there certainly does look very like Jochen’s.