Other Common Names
Palm/Palmetto Tortoise Beetle, Iridescent Blue Tortoise Beetle
Synonyms and other taxonomic changes
Hemisphaerota cyanea (Say)
Orig. Comb: Imatidium cyaneum Say 1824
Numbers
1 sp. in se US (8 or 9 spp. in the West Indies)
(1)Range
coastal s.TX to s.FL to NC -
Map (2)(3)Habitat
Gulf and s. Atlantic coasts
(3)Food
Breeds on both native and ornamental palms (Arecaceae)
(1)(4)Remarks
Larvae of this species create strands of fecal matter enclosing them in a nestlike thatch that protects them from predators. Thatch is retained when the larvae pupate, until the adult has emerged and its shell has hardened. Thomas Eisner has a very detailed description of this process in his book
For Love of Insects.
(5)
Egg-sacs of this species are covered by the mother with fecal pellets (below).
Print References
Eisner T., & M. Eisner. 2000. Defensive use of a fecal thatch by a beetle larva (
Hemisphaerota cyanea) Proceedings of the National Academy of Science 97: 2632-2636.
Full Text
Beshear, R.J. 1969. Observations on the life history of Hemisphaerota cyanea in Georgia. Journal of the Entomological Society of Georgia 4: 168-170.
Jackman, J.A. 1976. A tortoise beetle, Hemisphaerota cyanea, on palms in Texas. The Southwestern Entomologist 1: 181-183.
Woodruff, R.E. 1965. A tortoise beetle (
Hemisphaerota cyanea (Say)) on palms in Florida (Coleoptera: Chrysomelidae). Florida Department of Agriculture, Division of Plant Industry. Entomology Circular 35. Gainesville, FL.
Full TextInternet References
Featured Creatures - Donald Hall and Jerry F. Butler, 2001