Caterpillar found at base of clump of grass.
No interactions present.
Are the other 'yellow-underwing' moth caterpillars similar at all? or are their other similar caterpillars?
I'll let Douglas answer that one if he doesn't mind, he's far more knowledgeable than I am.
Chris Brooks - www.dragonfly-images.co.uk
My Flickr site - www.flickr.com/photos/ceb1298
Yep, a large group of the noctuids are fairly similar to this, including but not exclusively other noctua species; lots of brown ones with black markings. Caterpillar ID is always more difficult and it always really helps if you have images from as many angles as possible.
http://www.ukleps.org/ - this is a great website for browsing caterpillar images if you want to compare any species.
But Large YU is fairly distinctive - better marked than many. If you're familar with the species it's not too tricky at all.
Thanks for the ID and for the further comments. Website duly noted.
Sorry but it seems I've made a slight mistake here, this caterpillar is actually that of either Six-striped Rustic or Square spot Rustic, which are identical as a caterpillar.
These can be separated by LYU in a number of ways, the clearest being the thick white line along the back, not present on LYU.
Sorry for any confusion with these; I'd totally forgot about this pair of moths! Even though I'd seen and ID'd them correctly last year!
Looking at the pictures for matching ID's under 'other observations' it seems this has happened a fair few times!
Lat/Lng: 57.9734, -3.9885
OS grid ref: NH824999
In cultivated part of garden. In among clump of coarse grass with chives, mint and various "weeds" nearby.