Pseudocoremia insignita, also referred to by the common name tree nettle flash, is a species of moth in the family Geometridae.

Antennae brown, in ♂ moderately bipectinated, pectinations gradually decreasing in length apically, last twelve or thirteen segments simple.

Forewings elongate triangular, costa moderately arched, apex blunt, termen bowed, oblique; whitish ochreous; basal 3/5 fuscous brown; first line indicated by ochreous outwards-curved fascia on costa at 1/4; outer edge of median band (margin of dark area) broadly and strongly projecting at middle, margined with white; a broad brownish terminal area including obscure white waved subterminal line: fringes (damaged) apparently brown mixed with ochreous.

Hindwings pale ochreous sparsely sprinkled with brown; an interrupted brown line round termen: fringes ochreous.

[5]Philpott noted that the shape of the outer median band margin differed from all other New Zealand species in the (then) Selidosema genus.