Tag Archives: Thyrocopa inermis Walsingham

Thyrocopa alterna Walsingham

Unarmed Thyrocopa Moth (Thyrocopa alterna)

This species is known to occur on the islands of Hawai’i and Maui.

The species reaches wingspans from 1,6 to 3 cm, with the individuals from Hawai’i generally being larger than those from Maui.


Following a revision of the genus in 2009 two forms formerly treated as distinct species are now included within this species, Thyrocopa adumbrata Walsingham and Thyrocopa inermis Walsingham.



[1] Elwood C. Zimmerman: Insects of Hawaii 9; Microlepidoptera Part 2; Gelechioidea. University of Hawaii Press, Honolulu 1978
[2] Matthew J. Medeiros: A revision of the endemic Hawaiian genus Thyrocopa (Lepidoptera: Xyloryctidae: Xyloryctinae). Zootaxa 2202: 1-47. 2009