darwin's picture

Help required

Observed: 11th May 2011 By: darwindarwin’s reputation in Invertebratesdarwin’s reputation in Invertebrates
?????
Description:

Can anyone i.d. this moth for me?
Cheers

Identifications
Species interactions

No interactions present.

Species with which Ingrailed clay (Diarsia mendica) interacts

Comments

Phil The Naturalist's picture

Ingrailed clay

Hi David,

These two always catch me out, they do tend to cause confusion don't they.

I don't think its the Ingrailed clay because they are not on the wing till July in the North. Where as in the South you may see these as early as June.
Ok while there are alot of species that are early this year, up to about 7-10 days on average in the North and up to about 14 days on average in the South.
But I don't think as much as 4 weeks.

Cheers,
Phil

DavidNotton's picture

record breaking year

Yes I see what you're saying. Quoted dates are indicative but are effectively averages (excluding outliers) based on normal years and in individual cases, cannot be 100% decisive. This year is a record breaking year as far as dates are concerned. And it looks more like an Ingrailed Clay. What do the genitalia tell you?

Phil The Naturalist's picture

The genitalia would tell me

The genitalia would tell me all I needed to know if i had caught the moth myself.
But I would be looking at a number of things! But mainly

The valva-
The Juxta-
The Cucullus-

The valva in the Diarsia rubi is very broad compared to that of the Diarsia mendica

The Juxta in the Diarsia rubi is again very broad compared to that of the Diarsia mendica

The Cucullus in the Diarsia rubi is narrow compared to that of the Diarsia mendica

There are many other variations, but these are the one's I would be looking out for.

The joy of studying moths ah!
But this is what keeps me coming back year after year, and for you as well i guess to David.

Cheers,
Phil