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Euthrix laeta

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Species of moth

Euthrix laeta
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Lasiocampidae
Genus: Euthrix
Species: E. laeta
Binomial name
Euthrix laeta
(Walker, 1855)
Synonyms
  • Amydona laeta Walker, 1855
  • Philudoria laeta Walker; Lajonquière, 1978
  • Cosmotriche purpurascensHampson, 1893

Euthrix laeta is a moth of the family Lasiocampidae first described by Francis Walker in 1855.

Distribution

It is found in South Asian countries like India, Sri Lanka, Nepal, Pakistan and Bangladesh towards Russian Far East of China, Siberia, Japan, Korea to South East Asian Sundaland.

Taxonomy

The systematics of the species has been considered taxonomically stable since a revision by Yves de Lajonquière (1977). However, by J. W. Tutt, 1902 it was accepted as a member of its own subgenus, Routlegdia, and then erroneously as the Orienthrix by Yuri A. Tschistjakov in 1998.

Description

Forewings are leaf like with an oblique postmedial yellow patch on the dorsal surface sometimes with a violet saturation. The caterpillar is known to feed on Dalbergia species. Adults are found from rainforest and coastal associations. Male has a wingspan of 33–55 mm and 50–70 mm in females. Female is much larger and more robust than the male. Antennae bipectinate (comb like on both sides) in both sexes, whereas the female has shorter rami. Body color is bright lilac reddish. Subspecies divisa in Sri Lanka is much darker. Hindwings are lightly divided with darker zones.

Body of the caterpillar is brown to ash gray. There are black and gray speckles dorsally. The white to yellow colored spots and streaks grouped to form a complete marble pattern. Mesothorax bears a dorso-median line of black setae. The caterpillar is known to feed on Lespedeza and Dalbergia species.

Subspecies

Five subspecies are recognized, along with new subspecies.

Subspecies Distribution Wingspan Larval food plants
Euthrix laeta arina Zolotuhin & Perekrasnov, 1894 Taiwan 45–55 mm in male and 60–64 mm in female Bambusa and Phragmites possible
Euthrix laeta austrina de Lajonquière, 1978 Sumatra, Borneo 33–46 mm in male and 50–58 mm female
Euthrix laeta divisa Moore, 1879 Sri Lanka, southern India 45–50 mm in male and 52–65 mm in female
Euthrix laeta laeta Walker, 1855 Northern India, Pakistan, Nepal, Bangladesh 50–55 mm in male and 60–63 mm in female Dalbergia latifolia and Dalbergia sissoo.
Euthrix laeta sulphurea Aurivillius, 1894 Russia, Korea, China, Japan (Tsushima), Myanmar, Laos, Thailand, Vietnam 50–53 mm in males and 67–70 mm in female Lespedeza bicolor and Dalbergia

References

  1. "Species Details: Euthrix laeta Walker, 1855". Catalogue of Life. Retrieved 2 March 2018.
  2. Koçak, Ahmet Ömer; Kemal, Muhabbet (20 February 2012). "Preliminary list of the Lepidoptera of Sri Lanka". Cesa News (79): 1–57 – via Academia.
  3. ^ "A review of the Euthrix laeta (Walker, 1855) complex with description of a new species and two new subspecies" (PDF). State pedagogical University of Ulyanovsk. Retrieved 2 March 2018.
  4. "Euthrix laeta Walker". The Moths of Borneo. Retrieved 2 March 2018.
  5. "HOSTS - a Database of the World's Lepidopteran Hostplants". The Natural History Museum. Retrieved 2 March 2018.
  6. "タケヒメカレハ Euthrix laeta sulphurea (Aurivillius, 1895)". Digital Moths of Japan. Retrieved 2 March 2018.

External links

Taxon identifiers
Euthrix laeta


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