Detection of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera:Noctuidae) using larval morphological characters, and observations on its current local distribution in the Philippines
2019
Navasero, M.V. | Navasero, M.M. | Burgonio, G.A.S. | Ardez, K.P. | Ebuenga, M.D. | Beltran, M.J.B. | Bato, M.B. | Gonzales, P.G. | Magsino, G.L. | Caoili, B.L. | Barrion-Dupo, A.L.A. | Aquino, M.F.G.M.
Detection surveys and identification using larval morphological characters of the fall armyworm, Spodoptera frugiperda (J.E. Smith), were conducted in several provinces in the Philippines from June to October 2019. The smooth body texture and presence of conspicuous black pinaculae on the dorsal body segments of larvae distinguished S. frigiperda from the other species of the genus and three other common noctuid pests of corn in the Philippines, namely; S. exempta (Walker), S. Exigua (Hubner), Mythimna separate (Walker), and Chrysodeixis eriosoma (Doubleday). The markings along the inverted Y-shaped frontoclypeal suture and ecdysial line, except for C. eriosoma, is common to all species but differ in breadth and color. Incidence of fall armyworm was recorded in 17 municipalities in 10 provinces. Preliminary observations indicated that the pest is damaging only to non-Bt corn. It infests all growth stages of corn but showed apparent preference for earlier growth stages of the host.
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