corn earworm: meaning, definition, pronunciation and examples
lowtechnical / agricultural / entomological
Quick answer
What does “corn earworm” mean?
A caterpillar (larva of a moth) that bores into and feeds on the ears/kernels of corn and other crops, causing agricultural damage.
Audio
Pronunciation
Definition
Meaning and Definition
A caterpillar (larva of a moth) that bores into and feeds on the ears/kernels of corn and other crops, causing agricultural damage.
A significant agricultural pest, the larval stage of the Helicoverpa zea moth, known for attacking corn, tomatoes, cotton, and other crops. In scientific contexts, it refers specifically to this species.
Dialectal Variation
British vs American Usage
Differences
In British English, 'corn' refers to cereal grains in general, while in American English it specifically means maize. Therefore, in a UK context, the term might be misinterpreted as a pest of cereal crops broadly, though the species is still known. The term is American in origin.
Connotations
Neutral scientific/agricultural pest name in AmE. May sound somewhat foreign or specifically American in BrE, where 'cotton bollworm' or 'tomato fruitworm' (other names for the same species) might be used in relevant contexts.
Frequency
Far more common in American English due to maize being a major crop. Rare in general British English, though used in entomological literature.
Grammar
How to Use “corn earworm” in a Sentence
[The/An] corn earworm [verbs (infests, bores, feeds)][Farmers/We] [verb (control, monitor, scout for)] corn earwormVocabulary
Collocations
Examples
Examples of “corn earworm” in a Sentence
verb
American English
- The field was heavily corn-earwormed this season. (informal/technical)
adjective
British English
- corn-earworm damage
- corn-earworm infestation
American English
- corn earworm pressure
- corn earworm management
Usage
Meaning in Context
Business
Discussed in agricultural business reports on crop losses and pest control costs.
Academic
Used in entomology, agriculture, and environmental science papers on integrated pest management (IPM).
Everyday
Used primarily by gardeners and farmers; unlikely in general urban conversation.
Technical
Standard term in agronomy, extension services, and pesticide labeling.
Watch out
Common Mistakes When Using “corn earworm”
- Misspelling as 'corn ear worm' (open compound).
- Confusing it with 'European corn borer' (a different pest, Ostrinia nubilalis).
- Using it as a general term for any caterpillar on corn.
FAQ
Frequently Asked Questions
No. Despite its name, it is a major pest of over 100 plants, including cotton, tomatoes, and soybeans. It is also called tomato fruitworm or cotton bollworm when on those crops.
Yes, methods include using biological controls like Trichogramma wasps (egg parasites), applying Bt (Bacillus thuringiensis) sprays, and planting pest-resistant crop varieties.
It refers to the 'ear of corn,' which is the seed-bearing head (cob) of the maize plant, not the human ear. The worm bores into this part of the plant.
The larva feeds protected inside the corn ear or fruit, making direct contact with sprays difficult. Furthermore, the species has a documented history of rapidly developing resistance to many insecticides.
A caterpillar (larva of a moth) that bores into and feeds on the ears/kernels of corn and other crops, causing agricultural damage.
Corn earworm is usually technical / agricultural / entomological in register.
Corn earworm: in British English it is pronounced /ˈkɔːn ˈɪəwɜːm/, and in American English it is pronounced /ˈkɔːrn ˈɪrwɜːrm/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Imagine an EAR of CORN with a WORM sticking out of it, wearing a miner's helmet (for boring in).
Conceptual Metaphor
PEST AS INVADER / THIEF (It invades the ear of corn and steals the kernels).
Practice
Quiz
What is the primary crop associated with the common name 'corn earworm'?