Friday, 4 January 2019

Black-spotted Chestnut new for Bucks

This record is posted on behalf of Robin Knill-Jones from Denham in the SE corner of Bucks. It was from a trap set on the evening of 1st January 2019 which was left running for the night of 2nd January too and not looked at until 3rd January, so the exact arrival date is not known.

Yesterday he sent me a picture of a moth (the only one in the trap) he wasn't sure about, asking if I thought it was Conistra vaccinii or ligula. I'd never seen one of either like his picture.  As Herts County Moth Recorder Colin Plant had recently sent around a message about watching out for Black-spotted Chestnut Conistra rubiginosa I looked it up.  Robin's moth looked just right for that species and Colin confirmed what it was.

The species was first seen in the UK in Kent in 2011, at more than one site.  In 2014 it turned up in Suffolk and in 2015 at two sites in Bedfordshire and then in 2016 in Dorset.  Cambridgeshire joined the list in 2018, as did Hertfordshire a week ago just before the New Year.  So it is well worth keeping the traps out!

If you think you have one please take a picture and possibly save the specimen for absolute confirmation (there is a similar looking species in Europe, not yet recorded in the UK).  Thanks to Robin for supplying the information and picture.

Martin Albertini
Bucks County Moth Recorder

Black-spotted Chestnut, Denham Jan 2019


  1. Brilliant news. It does rather beg the question of how it got here, though. I was expecting the first Bucks records to come from further north, moving into the Milton Keynes area from Bedfordshire. Appearing in the far south of the county suggests that it has moved through parts of London, as yet unseen!

  2. One was caught in Great Gransden last night (14th Jan), new for VC31 Huntingdonshire, so it is still flying and still seemingly on the move.


Note: only a member of this blog may post a comment.