Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The caterpillar of a hawkmoth, having a hornlike structure on the last abdominal segment. Some hornworms are agricultural pests.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A species of moth, Manduca sexta

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

horn +‎ worm

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Examples

  • The tomato hornworm is a large green caterpillar that will do a lot of vine feeding, until a parasitic wasp named the braconid shows up and lays eggs to hatch and feed on the poor thing.

    Groundwork: More tomatoes Adrian Higgins 2010

  • Scientists have studied this host and parasite so closely because the hornworm is a champion pest, devouring not just tobacco but tomatoes and other vegetables.

    Parasite Rex Carl Zimmer 2009

  • Scientists have studied this host and parasite so closely because the hornworm is a champion pest, devouring not just tobacco but tomatoes and other vegetables.

    Parasite Rex Carl Zimmer 2009

  • Scientists have studied this host and parasite so closely because the hornworm is a champion pest, devouring not just tobacco but tomatoes and other vegetables.

    Parasite Rex Carl Zimmer 2009

  • The interesting thing is that there is also a tomato hornworm, which is the caterpillar of the five-spotted hawk moth Manduca quinquemaculata.

    Archive 2007-08-01 AYDIN 2007

  • The interesting thing is that there is also a tomato hornworm, which is the caterpillar of the five-spotted hawk moth Manduca quinquemaculata.

    Where is a Cotesia AYDIN 2007

  • The spokesthing for the hot decline of the season was the tomato hornworm.

    The Dirty Life Kristin Kimball 2010

  • Insect pests include an enormous number of species from tiny thrips, that are nearly invisible to the naked eye, to the large larvae of the tomato hornworm.

    Pest management 2009

  • But once it is infected by wasps, the hornworm turns its food into sugar, a quick source of energy that the parasites use for fast growth.

    Parasite Rex Carl Zimmer 2009

  • Normally a hornworm would convert a lot of the leaf into fat, a stable form of energy that it can store away for the time when it will fast inside its cocoon.

    Parasite Rex Carl Zimmer 2009

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