Palikea Water Cosmet Moth (Hyposmocoma moopalikea)
The Palikea Water Cosmet Moth was described in the year 2011.
The species is endemic to the island of Maui, it is so far known only from the vicinity of the Palikea stream in the Kipahulu valley.
The case-bearing caterpillars are aquatic, the larval cases are burrito-shaped and 0,5 to 0,7 cm in length.
The male moth reaches a wingspan of about 1 cm, the female is slightly larger. The forewings are mostly dark brown with some scattered off-white scales. 
The Palikea Water Cosmet Moth appears to be very rare. 
 Patrick Schmitz; Daniel Rubinoff: The Hawaiian amphibious caterpillar guild: new species of Hyposmocoma (Lepidoptera: Cosmopterigidae) confirm distinct aquatic invasions and complex speciation patterns. Zoological Journal of the Linnean Society 162(1): 15–42. 2011