Calyptra gruesa is a
moth of the family
Erebidae. It has been found in
China.[3]C. gruesa has a wingspan range of 25 to 29 millimetres (0.98 to 1.14 in).[4]
^Savela, Markku Savela.
"Calyptra gruesa". Lepidoptera and some other life forms. Archived from
the original on 24 July 2009. Retrieved 29 August 2010.