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Mythimna amblycasis is a moth of the family Noctuidae. It is endemic to Kauai, Oahu, Molokai, Maui, Lanai and Hawaii.
Larvae feed on various grasses, bunch grass and sugarcane. The caterpillars become full-grown in about a month from the hatching of the eggs. The full-grown caterpillar is about 38 mm. It is usually cream colored with pale brownish mottlings.
Pupation takes place in an earthen cell a little below the surface of the ground, or beneath stones or rubbish. The pupa is about 19 mm long and 5 mm thick. The moth emerges from the pupa in about two weeks.
Adults have been reported feeding upon the blossoms of Metrosideros species.
References
Mythimna amblycasis Wikipedia(Text) CC BY-SA