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.
Fall armyworm. Named after its flight into North America where it lays eggs, and the larvae develop in the Fall or Autumn.
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, Pathogens & Weeds
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