Ingrailed Clay (Diarsia mendica)

Ingrailed Clay (Diarsia mendica)

Observation - Ingrailed Clay (Diarsia mendica). Description: Cramped at the bottom of an egg-box, this is the only photo I got before it escaped. Can anyone help with an ID, please? I wondered about Chestnut (Conistra vaccinii). Edit: Changed to match DD's ID. Many thanks.

Cramped at the bottom of an egg-box, this is the only photo I got before it escaped. Can anyone help with an ID, please? I wondered about Chestnut (Conistra vaccinii).
Edit: Changed to match DD's ID. Many thanks.