Mature larva, photographed 27th August 2025, reared from small specimen between two flat-spun blackthorn leaves, Romsley, Worcestershire, 15th August 2025, adult reared, emerged 5th October 2025.
Found as a very small larva on Coast Redwood (Sequoia sempervirens) at Arley Arboretum, Worcestershire 14.5.25. In captivity initially fed on Nordmann Fir and later Sallow. Adult reared, emerged 18.7.25.
Ex larva 7.5.25 on Ash, Fraxinus excelsior, Monkwood, Worcestershire. Emerged 21.5.25.
Identification based on the pale head colour, not orange-brown of ruficeps, and a very slight suggestion of the wing pattern of the 'normal' form.
Larval development from 15mm bottom right to 28mm top, 27th July to 12th August 2024. Found on sapling Birch on heathland and fed on such in captivity. Adult reared, emerged 1st May 2025.