''Phigalia titea'', the spiny looper or half-wing moth, is a species of moth in the family

Geometridae The geometer moths are moths belonging to the family Geometridae of the insect order Lepidoptera, the moths and butterflies. Their scientific name derives from the Ancient Greek ''geo'' γεω (derivative form of or "the earth"), and ''met ...

. The species was first described by

Pieter Cramer Pieter Cramer (21 May 1721 (baptized) – 28 September 1776), was a wealthy Dutch merchant in linen and Spanish wool, remembered as an entomologist. Cramer was the director of the Zealand Society, a scientific society located in Flushing, and a mem ...

in 1780 (some sources give 1782). The average wingspan is about 34 mm. Phigalia titea larva

References

Moths of North America Moths described in 1780 Taxa named by Pieter Cramer {{Ennominae-stub