A new Alucitidae species from Taiwan (Lepidoptera, Alucitidae) Contribution to the moths of Taiwan 15

The species Pterotopteryx formosana sp. nov. is described from Chenggong Town-ship in Taitung County. The new species and its closest relative are figured with their male genitalia. It is the second Alucitidae species recorded from Taiwan. A figure of the living imago on the screen is attached. The species morphologically most similar to it is P. spilodesma (Meyrick, 1908), but it is clearly different in the wing markings as well as in the genital structures. The biotope at the light trap is an island-like temporary rainforest relict.