Color Studies of Reared Elm Spanworm Larvae and Pupae

1 May 1966

journal article
research article
Published by Oxford University Press (OUP) in Annals of the Entomological Society of America

Vol. 59 (3) , 568-573
https://doi.org/10.1093/aesa/59.3.568

Abstract

Larvae and pupae in field populations of the elm spanworm, Ennomos subsignarius (Hübner), are colored variously. A preliminary study related these variations to population density; individually reared larvae were light and aggregated larvae were dark. The possibility that pheromones controlled color was investigated and discounted. The color relationships between instars, rearing density, and paired rearings with fall cankerworm, Alsophila pometaria (Harris), are discussed.

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