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tortoise beetle

American  
[tawr-tuhs beet-l] / ˈtɔr təs ˌbit l /

noun

  1. any of several turtle-shaped leaf beetles, as Chelymorpha cassidea argus tortoise beetle, or milkweed tortoise beetle, which resembles the ladybird beetle and feeds primarily on bindweed and milkweed.


tortoise beetle British  

noun

  1. a metallic-coloured leaf beetle of the genus Cassida, in which the elytra and terga cover the body like a shell

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of tortoise beetle

First recorded in 1705–15