Ardea's picture

Dark Marbled

Observed: 4th September 2013 By: ArdeaArdea’s reputation in InvertebratesArdea’s reputation in InvertebratesArdea’s reputation in InvertebratesArdea’s reputation in Invertebrates
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Description:

citrata/truncata never seem to get easier, no matter how much time you spend playing with them!

Identifications
Species interactions

No interactions present.

Species with which Common Marbled Carpet (Chloroclysta truncata) interacts

Comments

chrisbrooks's picture

Dark Marbled

Hi Brian, being a relative beginner in moths can you add some notes why this is a Dark Marbled Carpet. It's interesting as I was under the impression (maybe incorrectly) that this was the one colour form that the Dark Marbled Carpet didn't come in.

Ardea's picture

Chris, I'm not 100% with this

Chris, I'm not 100% with this one. I've been told that both can show the red/brown morph. Underwing is the key; DMC should have a more pointed (acute) central cross line in the hind wing - evenly rounded in CMC. I'm not sure I'm being distracted by the nick in the middle of the line. Forewing - the central line is more pointed in DMC, more right angled in CMC. Which is how this beast looked. Sadly it wouldn't keep still long enough for a photo. I've got in in the fridge, once it's cooled down a but I'll have a go again and post the results if they help. Unfortunately genitalia don't help as they are not given in British and Irish Moths - A guide to selected difficult species (Townsend, Clifton and Goodey).

I'm just as happy to be proved wrong. So there you are it's up for grabs.

DD's picture

I think the most reliable

I think the most reliable feature is the postmedian line on the underside of the hindwing. It should be more acutely angled in citrata and now I've looked more closely at your photo, it does indeed seem to show this. Perhaps the point about the colour form is just an oft repeated myth.

DD

Ardea's picture

Thanks Donald, I'm sure that

Thanks Donald,

I'm sure that it is common marbled. If you ignore the nick in the post-median it is evenly curved.

DavidHowdon's picture

Agree here

The line on the underside of the hindwing looks close in shape to that of CMC. The orange form being only CMC is documented in a few places (for instance in Waring, Townsend and Lewington) and I've not heard anyone saying it is incorrect. Doesn't mean someone will not one day find a DMC with this feature of course.