''Parasa pygmy'' is a

moth Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of w ...

of the family

Limacodidae The Limacodidae or Eucleidae are a family of moths in the superfamily Zygaenoidea or the Cossoidea;Scoble, M.J. (1992). ''The Lepidoptera: Form, Function and Diversity.'' Oxford University Press. the placement is in dispute. They are often ca ...

. It is found in

Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort ...

, inhabiting mountains, at altitudes ranging from 2,000 to 3,000 meters. The

wingspan The wingspan (or just span) of a bird or an airplane is the distance from one wingtip to the other wingtip. For example, the Boeing 777–200 has a wingspan of , and a wandering albatross (''Diomedea exulans'') caught in 1965 had a wingspan of ...

is 24–25 mm. The forewing ground colour is chestnut with a large median green patch delimited externally by a thin white line, which in turn is lined by a brown border. The hindwings are chestnut. Adults have been recorded on wing from mid-August to early October, probably in one generation per year. The larvae feed on ''

Picea morrisonicola ''Picea morrisonicola'', the Taiwan spruce, is a species of conifer in the family Pinaceae. It is found only in Taiwan, and it is the only species of spruce in Taiwan. It is the southernmost species of spruce in the world, being spread near the T ...

''. Larvae have been found in late May. Full-grown larvae have a spindle-like body with a length of about 20 mm. The head and body ground coloration is green. The species probably overwinters as an egg.Review of the Parasa undulata (Cai, 1983) species group with the first conifer-feeding larva for Limacodidae and descriptions of two new species from China and Taiwan (Lepidoptera, Limacodidae)
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References

Moths described in 2010 Limacodidae Moths of Taiwan {{Limacodidae-stub