Theretra silhetensis

Theretra silhetensis, the brown-banded hunter hawkmoth, is a moth of the family Sphingidae described by Francis Walker in 1856. It lives in Indo-Australia, India, Sri Lanka, Papua New Guinea, East Australia, Solomon Islands, Fiji Islands, Vanuatu Islands.[2]

Brown-banded hunter hawkmoth
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Lepidoptera
Family:
Sphingidae
Genus:
Theretra
Species:
T. silhetensis
Binomial name
Theretra silhetensis
(Walker, 1856)[1]
Synonyms
  • Chaerocampa silhetensis Walker, 1856
  • Chaerocampa silhetensis Schaufuss, 1870
  • Chaerocampa bisecta Moore, 1858
  • Chaerocampa silhetensis intersecta Butler, 1876
  • Theretra silhetensis aquila Lachlan & Moulds, 1996


Description

The wingspan is 60–72 mm. Not to be confused with Theretra oldenlandiae in being very much paler in color and with a white line down the center of the abdomen. The forewing has a silvery line beyond the oblique brown band. Other parts are ochreous. Larvae are exceedingly variable, from yellow green and green to brown or greyish black ones.[3] But the commonly found color of larva is green with a reddish-brown dorsal area. There is a subdorsal paler line with equal-sized ocelli from 4th to 10th somites with green center. The horn is reddish brown as well.[4]

  • Male dorsal
  • Male ventral
  • Female dorsal
  • Female ventral
  • Larva

Ecology

Larvae have been recorded feeding on Colocasia antiquorum and Ludwigia species in southern China, Colocasia esculenta in Japan, Ludwigia repens and Boerhavia species in India and numerous other host plants from elsewhere, including Arum, Caladium, Pistia, Kochia, Ipomoea, Boerhavia, Ludwigia, Rosa and Trapa species.[5]

Subspecies
  • Theretra silhetensis silhetensis (Sri Lanka and southern India as a disjunct population. Northern India, Nepal, Bangladesh, Myanmar, the Andaman Islands, Thailand, eastern and southern China, Taiwan, central and southern Japan, Malaysia (Peninsular, Sarawak), Indonesia (Sumatra, Java, Kalimantan) and Vietnam)[6]
  • Theretra silhetensis intersecta (Butler, 1876) (from the Philippines south through eastern Indonesia to the Solomon Islands and eastern Australia)
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References
  1. "CATE Creating a Taxonomic eScience - Sphingidae". Cate-sphingidae.org. Archived from the original on 2012-10-22. Retrieved 2011-10-25.
  2. Hogenes, Willem. "The Hawkmoths (Sphingidae, Macroglossinae) of Papua Indonesia". Papua Insects Foundation. Retrieved 5 July 2016.
  3. "Theretra silhetensis Boisduval". The Moths of Borneo. Retrieved 5 July 2016.
  4. Hampson, G. F. (1892). The Fauna of British India, Including Ceylon and Burma: Moths Volume I. Taylor and Francis – via Biodiversity Heritage Library.
  5. "Theretra silhetensis". Butterfly House. Retrieved 5 July 2016.
  6. Pittaway, A. R.; Kitching, I. J. (2018). "Theretra silhetensis silhetensis (Walker, 1856) -- Brown-banded hunter hawkmoth". Sphingidae of the Eastern Palaearctic. Retrieved December 17, 2018.


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