About Gymnobathra flavidella (Walker, 1864)
Gymnobathra flavidella (Walker, 1864) has forewings ranging from 4.5mm to 8.5mm in length. G.V. Hudson described the wing expansion of this species as varying from slightly over half an inch to nearly three quarters of an inch. The forewings are bright yellow with rosy brown markings. They feature a tiny mark on the costa at the base, very faint costal edging, apical shading, and three more or less distinct dark brown discal dots. A prominent triangular rosy-brown patch is located at the tornus, edged towards the base by a blackish-brown line that extends as a faint cloudy mark toward the costa. The hindwings are white, with the costal and terminal sections heavily clouded with pale rosy-brown. The cilia on all wings are rosy-brown. In some specimens, the forewings are more or less clouded with orange-brown, and as noted, the species shows considerable size variation. This species is endemic to New Zealand. It is common across all areas of the North Island, and in the northern half of the South Island, ranging as far south as Christchurch and Franz Josef.