Kauai Cutworm (Agrotis tephrias)
This species inhabited the islands of Kaua’i and Maui, but very probably occurred on the other main islands as well. The form from Maui was originally described as a distinct species (Agrotis spoderopa Meyrick).
The Kauai Cutworm reached a wingspan of about 4 cm. [1]
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References:
[1] E. C. Zimmerman: Insects of Hawaii 7, Macrolepidoptera. University of Hawaii Press, Honolulu 1958
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(public domain)
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edited: 07.04.2018