Photo 1. Mature larva of the fall armyworm, Spodoptera frugiperda. Note the inverted Y on the head, and the bristles from black spots. Another distinguishing characteristic is the four black dots (in a square) on the last abdominal segment.
Photo 3. Mature larva of the fall armyworm, Spodoptera frugiperda, inside a maize cob. The whorl of leaves are usually the part most affected by the armyworm.
AUTHOR Grahame Jackson
Information from John Wightman (personnel communication); and CABI (2019). Spodoptera frugiperda (fall armyworm) Crop Protection Compendium. (www.cabi.org/cpc); and Fall armyworm. Wikipedia. (https://en.wikipedia.org/wiki/Fall_armyworm); and FAO FAMEWS V3 app; and FAO Fall Armyworm Guidance Notes 1-5. (http://www.fao.org/fall-armyworm/faw-management/pesticide-guidance/en/); and from Kris Wyckhuys. Hanoi, Vietnam. Photo 1 Russ Ottens, University of Georgia, Bugwood.org. Photo 2 Frank Peairs, Colorado State University, Bugwood.org. Photo 3 John C. French Sr., Retired, Universities:Auburn, GA, Clemson and U of MO, Bugwood.org. Photo 4 Lyle Buss, University of Florida, Bugwood.org. Diagram from FAO FAW Guidance Note 2 Fall Armyworm Scouting. (http://www.fao.org/3/I8321EN/i8321en.pdf).
Produced with support from the Australian Centre for International Agricultural Research under project HORT/2016/18: Responding to emerging pest and disease threats to horticulture in the Pacific islands, implemented by the University of Queensland and the Pacific Community
This mini fact sheet is a part of the app Pacific Pests and Pathogens
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