CLOSED: Idaea biselata or??

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wallaby1 Lincoln, United Kingdom(Zone 8a) Oct 06, 2008

Ken, I need your moth book, lol!

I have two more Wave moths which look to be the same moth, one is darker than the other. They look in many ways like the Small Fan-footed Wave Idaea biselata but the tail sticks out the bottom of the wings, and mine have one dot on the wings where most I see have two.

http://ukmoths.org.uk/show.php?id=125

I found another, Idaea typicata which looks closer, with the exception that the two middle wavy bands look closer together than on mine.

(edited to say the leps.it link reverted back to I. biselata, but I. typicata is there)

http://www.leps.it/indexjs.htm?SpeciesPages/IdaeaBisel.htm

Idaea typicata is not listed on the ukmoths site,

http://ukmoths.org.uk/search.php?entry=Idaea

But it is close according to the map shown here:

http://www.funet.fi/pub/sci/bio/life/insecta/lepidoptera/ditrysia/geometroidea/geometridae/sterrhinae/idaea/index.html

Just across the English Channel!

http://www.lepidoptera.pl/show.php?ID=5489&country=XX

A 'UK google' brought up one site of Idea world species,

http://test.sp2000.org/browse_taxa.php?path=0,1,164,344,749,828,829,51393&selected_taxon=51393

With the I. typicata link having a link to the NHM:

http://www.nhm.ac.uk/jdsml/research-curation/research/projects/lepindex/detail.dsml?TaxonNo=214559%2e0

Maybe not a lot of use!

Taken on 29th July






This message was edited Oct 6, 2008 3:04 PM

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wallaby1 Lincoln, United Kingdom(Zone 8a) Oct 06, 2008

The other, paler moth taken on 27th July, albeit in the very early hours!

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kennedyh Churchill, Victoria, Australia(Zone 10a) Oct 13, 2008

Janet, I am pretty sure that your moths are both Idaea biselata. Yours are not missing the dot on the hind wing. They simply have not spread the wings far enough to reveal the spot, which will be hidden under the trailing edge of the fore wing. If you look at the curved line below where the dort would be and match against the image on http://ukmoths.org.uk/show.php?id=125 you can see that the shape of the curved line means that the dot is further out on the wing than you can see. The second moth looks not so much paler as lacking a lot of the scales from its wings,

Ken

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wallaby1 Lincoln, United Kingdom(Zone 8a) Oct 13, 2008

That makes sense! Now why didn't I think of that, lol.

Thanks Ken.

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