Tag Archives: Sphingidae

Hippotion velox (Fabricius)

Swift Hawk Moth (Hippotion velox)

In January 2002 the small island of Maninita in the Tongan Vava’u group was hit by the cyclone Waka, one of the most destructive tropical cyclones ever to affect the Tongan islands. The island’s forest, dominated by three tree species, puopua (Guettarda speciosa L.), fao (Ochrosia oppositifolia (Lam.) K. Schum) and puko (Pisonia grandis R. Br.), was indeed badly damaged, but the trees appeared not to have been defoliated by the cyclone itself but by an immense outbreak of caterpillars following the disaster.

These caterpillars were identified as belonging to the Fijian Bee Hawk Moth (Cephonodes armatus Rothschild & Jordan) and to the Swift Hawk Moth (Hippotion velox), whose occurrence on the Tongan islands was verified thereby for the first time.

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The Swift Hawk Moth is a middle-sized species, reaching a wingspan of 5,5 to 7,5 cm.

The species has a wide distribution and occurs from Asia and Australia to Polynesia, where it is now known from the Cook Islands, the Fijian Islands, from Samoa and the Tokelauan atolls. The Swift Hawk Moth has only recently begun to colonize New Zealand as well.

The caterpillars are able to use a wide range of plant species as food, including members from the Aroid family (Araceae), the Morning Glory family (Convolvulaceae), the Four O’Clock family (Nyctaginaceae) and the Coffee family (Rubiaceae).

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References:

[1] Alden D. Hinckley: Ecology of Terrestrial Arthropods on the Tokelau Atolls. Atoll Research Bulletin 124: 1-18. 1969
[2] Karin S. Kami; Scott E. Miller: Samoan Insects and related Arthropods: Checklist and Bibliography. Bishop Museum Technical Report 13. 1998
[3] D. M. Houston: Eradicating rats from Maninita Island, Vava’u, Kingdom of Tonga August 2002. New Zealand Agency for International Development, Tonga Visitors Bureau, Ministry of Land, Survey and Natural Resources, Department of Environment, Kingdom of Tonga

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Photo: John A. Clayton; by courtesy of John A. Clayton

http://www.usp.ac.fj/fijimoths

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edited: 29.06.2017

Hippotion hateleyi Holloway

Hateley’s Hawk Moth (Hippotion hateleyi)

Hateley’s Hawk Moth was discovered in the year 1986, the species was described in 1990.

The species seems to be restricted to Henderson Island / Pitcairn Islands, while most other sphingid moth species are very widespread.

This is probably the species whose larvae periodically defoliate the Pisonia trees on the island. [1]

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References:

[1] J. D. Holloway: The Lepidoptera of Easter, Pitcairn and Henderson Islands. Journal of Natural History 24(3): 719-729. 1990

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hippotion-hateleyi-ry

Photo: Robert Young

(under creative commons licence (3.0))
http://creativecommons.org/licenses/by/3.0