Isognathus leachii

Isognathus leachii is a moth of the family Sphingidae.

Isognathus leachii
Male dorsal
Male ventral
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Lepidoptera
Family:
Sphingidae
Genus:
Isognathus
Species:
I. leachii
Binomial name
Isognathus leachii
(Swainson, 1823)[1]
Synonyms
  • Sphinx leachii Swainson, 1823
  • Isognathus metascyron Butler, 1875
  • Anceryx cahuchu Boisduval, 1875

Distribution

It is known from southern Panama and from Colombia, Venezuela, Brazil, Ecuador, Bolivia and Argentina.[2]

Description

The wingspan is about 85 mm for males and 94 mm for females. There are indistinct bands on the upperside of the abdomen and an elongate patch on the forewing upperside. The inner edge of the dark brown marginal band of the hindwing upperside is distinctly and almost regularly dentate and not constant in width.[3]

  • Female dorsal
  • Female ventral

Biology

There are probably multiple generations per year.

The larvae have been recorded feeding on Allamanda cathartica and Allamanda blancheti. They have long tails and are very colourful, suggesting they are unpalatable to birds.

References
  1. "CATE Creating a Taxonomic eScience - Sphingidae". Cate-sphingidae.org. Archived from the original on 2012-11-11. Retrieved 2011-10-19.
  2. "Silkmoths". Silkmoths.bizland.com. Archived from the original on 2016-03-04. Retrieved 2011-10-19.
  3. Butler, Arthur Gardiner (1876). "Revision of the Heterocerous Lepidoptera of the family Sphingidae". Transactions of the Zoological Society of London. 9 (10): 511–644.


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