Crab Shell Cosmet Moth (Hyposmocoma papaiili)
The Crab Shell Cosmet Moth was scientifically described in the year 2011.
It is a rather inconspicuous dark greyish brown colored species, which is restricted to the island of Maui.
the males have a wingspan of about 0,72 to 0,88 cm, the females of up to 1,26 cm.
The larvae were found on Eucalyptus trees (which are not native to the Hawaiian Islands), where they most probably feed on lichens.
The larval case in its shape resembles somewhat the carapace of a crab. It is about 1 cm long and has an entrance at each of the both, strangely serrated ends.
 Patrick Schmitz; Daniel Rubinoff: Ecologically and Morphologically Remarkable New Cosmet Moth Species of the Genus Hyposmocoma (Lepidoptera: Cosmopterigidae) Endemic to the Hawaiian Islands, with Reference to the Spectacular Diversity of Larval Cases. Annals of the Entomological Society of America 104(1): 1-15. 2011