Helen Mainwood's picture

IMG_9261 290312 Big beetle NH807960

Observed: 29th March 2012 By: Helen Mainwood
S159 Neighbourhood Nature - course complete
Helen Mainwood’s reputation in InvertebratesHelen Mainwood’s reputation in Invertebrates
IMG_9256 290312 big beetle NH807960
IMG_9258 290312 Big beetle NH807960
IMG_9262 290312 big beetle NH807960
IMG_9263 290312 big beetle NH807960
IMG_9261 290312 Big beetle NH807960
Description:

In lichen in coastal heathland.

Identifications
Species interactions

No interactions present.

Comments

nightfly's picture

Hi Helen, I think its one of

Hi Helen,

I think its one of the Carabus ground beetles, possibly C violaceus or C nemoralis. It is quite big at 35mm, should narrow it down a bit, being that size.

Cathal.

Helen Mainwood's picture

Thanks. Will follow that line

Thanks. Will follow that line and see if I can get further.

nightfly's picture

Helen, This one is a little

Helen,

This one is a little confusing. Nemoralis should possibly have more conspicuous pits on its elytra than yours, they seem more obvious in some of your shots than others. Carabus problematicus also has finely ridged elytra and inconspicuous tiny dents on the elytra. It might be problematicus but the roughened head seemed to point towards nemoralis for me also. The largest carabus Ive heard of is C. coriaceus, the size would fit better with the 35mm but the elytra dont look right.

Time will tell- someone who really knows their carabus will sort it.

Cathal.

altus silva's picture

C. nemoralis is extremely variable

This one fits within the range of variability of colour and sculpture.

Syrphus's picture

I have the specimen, and it

I have the specimen, and it is C. nemoralis.

M.

TRY

recording wildlife with The Recorder's Year on www.hbrg.org.uk/TRY.html.

nightfly's picture

Thanks for the confirmation

Thanks for the confirmation Syrphus, it is very similar to one I posted previously but its 'dimples' on the elytra are much less conspicuous than on some other examples in the carousel.
Thanks also to Altus Silva for pointing out that the species is variable in this regard. IE not all of them have the very conspicuous depressions on the elytra. It was the extremely well formed and quite deep depressions on another specimen in the carousel which made me unsure about this one.

Cathal.

Syrphus's picture

I had not noticed the 35mm

I had not noticed the 35mm bit. It is actually 25mm.

M.

TRY

recording wildlife with The Recorder's Year on www.hbrg.org.uk/TRY.html.

nightfly's picture

Thanks for that regarding the

Thanks for that regarding the size Syrphus, I thought it was an over estimation.

Cathal.

Helen Mainwood's picture

Thanks all round - very

Thanks all round - very interesting exchange of comments and sorry about the size.

Helen