Figure
2. Generalized
diagram of Heliothis zea larval digestive
system
drawn and reduced from a large composite scanning
electron micrograph.(Redrawn from MacGown, M. W., and P.
P. Sikorowski. 1982. Anatomy of the digestive system of
Heliothis zea [Lepidoptera: Noctuidae]
larvae. Miss. Agri. and For. Exp. Stn. Tech. Bull.
905).
Figure
3. Vertical sections taken with a light microscope of
healthy H. virescens larva.
