armyworm

ar·my·worm  (ärm-wûrm)

n.

A caterpillar belonging to either of two genera of moth, Pseudaletia or Spodoptera, large groups of which destroy crops and other vegetation.

Thesaurus

Noun	1.	armyworm - noctuid moth larvae that travel in multitudes destroying especially grass and grain army worm, Pseudaletia unipuncta genus Pseudaletia, Pseudaletia - moths whose larvae are armyworms caterpillar - a wormlike and often brightly colored and hairy or spiny larva of a butterfly or moth
	2.	armyworm - moth whose destructive larvae travel in multitudes Pseudaletia unipuncta noctuid, noctuid moth, owlet moth - usually dull-colored medium-sized nocturnal moth; the usually smooth-bodied larvae are destructive agricultural pests genus Pseudaletia, Pseudaletia - moths whose larvae are armyworms
	3.	armyworm - larva of fungus gnat that feed on cereals and other grains; they march in large companies in regular order when the food is exhausted fungus gnat, sciara, sciarid - minute blackish gregarious flies destructive to mushrooms and seedlings