- pternotorma
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n.; pl. -mae [Gr. pterna, heel; torma, socket](ARTHROPODA: Insecta)In scarabaeoid larvae, a stoutly curved process at the end of the laeotorma and occasionally of the dexotorma.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.