About Epiphryne undosata (Felder & Rogenhofer, 1875)
Epiphryne undosata was first described by Felder & Rogenhofer in 1875. Hudson provided the following description of this species' larva: it is slightly over 1/2 inch long, relatively stout, green, and paler on the underside, with slightly wrinkled skin. Its head is ochreous, and it has a broad dull crimson dorsal line that contains a central black bar on each segment. It also has two or three rows of conspicuous black warts that produce short black bristles, and a very faint greyish lateral line. Robert Hoare noted that a white stripe along the larva's back helps it camouflage, as the stripe resembles the leaf vein on the leaves of some of its host plants.
Hudson described the adult moth of this species as follows: the wingspan is just under an inch. All wings are pale yellow, with a variable number of fine jagged reddish-brown transverse lines that are typically most distinct closer to the termen. The forewings have a broad reddish-brown band along the costal edge, a blackish dot above the middle that just touches the costal band, and a small brown mark near the apex. The hindwings have a tiny black dot slightly above the middle. Adult moths of this species vary in both color intensity and pattern.
This species is endemic to New Zealand, and can be found in both the North and South Islands. It is considered locally common. It lives in native forest, particularly riverine forest, and has been observed in large numbers near lace-bark trees. It has also been observed living in Kunzea ericoides forest.
