Valerie Harrison's picture

Diamond micro

Observed: 6th July 2011 By: Valerie Harrison
West Galloway Scottish Ornithologists' Club
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diamond
Description:

Thought this might be a Diamond Backed moth Plutella xylostella but doesnt seem quite right so could it be Rhigognostis?

Identifications
Species interactions

No interactions present.

Species with which Rhigognostis incarnatella interacts

Comments

David Gibbs's picture

according to

MBGBI and UK moths http://ukmoths.org.uk/show.php?bf=468&map=true this species occurs as an adult from September to April. A July record suggests further investigation needed. We are seeing lots of disruption to flight periods these days, so this is a likely explanation, a further brood being produced mid summer. However, it is also worth checking non-British species. If I had caught this one I would be considering Rhigognostis schmaltzella http://www2.nrm.se/en/svenska_fjarilar/r/rhigognostis_schmaltzella.html.

Valerie Harrison's picture

Flight times

This is why I was wary of making an identification, however, I have just had a reply from Roy Leverton and he thinks it is Rhigognostis incarnatella. He also thinks that the flight times may be incorrect as little was known about this moth. There was a sighting at the end of June also, I understand.

Valerie
Wildforms
Gardening for Wildlife
www.wildforms.co.uk
wildforms.blogspot.com

David Gibbs's picture

I dont think

there is any reason to doubt published flight time. MBGBI clearly states that it can be found in winter. I am aware that there are other claims of this species in mid-summer, but was Rhigognostis schmaltzella considered and a specimen dissected to confirm? I would encourage you to take a specimen and send it off to a specialist (or dissect it yourself if you prefer) as even if it is incarnatella (undoubtedly the most probable) it would be interesting to confirm that this species is now producing a summer brood.

Valerie Harrison's picture

Rhigognostis schmaltzella

No I had not considered this species as it isnt on UKmoths. I did not keep a specimen, but I think the other one caught locally may have been sent for analysis. I will let you know if I hear any more. I am no expert and bow to others superior knowledge!

Valerie
Wildforms
Gardening for Wildlife
www.wildforms.co.uk
wildforms.blogspot.com