Translator Disclaimer
1 October 2012 External Morphology of the Egg of the Native (Melitara prodenialis) and Exotic (Cactoblastis cactorum) Cactus Moths (Lepidoptera: Pyralidae)
Gerald T. Baker, Stephen D. Hight, Richard L. Brown
Author Affiliations +
Abstract

Scanning electron microscopy was used to study the morphology of the chorionic surface of two pyralids that feed on Opuntia cactus. The chorionic surface of Cactoblastis cactorum has a reticulate pattern due to the ridges on the surface and aeropyles. The chorionic surface has a granular appearance at low magnifications and rugose at high ones. The micropylar area has a central depression with the micropyles and is surrounded by irregularly shaped polygonal cells. The tertiary cells have aeropyles associated with the cells, and these aeropyles have mesh-like extensions that cover their openings. The general appearance of the chorionic surface of Melitara prodenialis is similar to C. cactorum, but the micropylar region differs in that primary cells surrounding the micropylar depression are looping cells of varying sizes. Also, no aeropyles are associated with the looping cells around the micropylar region.

Gerald T. Baker, Stephen D. Hight, and Richard L. Brown "External Morphology of the Egg of the Native (Melitara prodenialis) and Exotic (Cactoblastis cactorum) Cactus Moths (Lepidoptera: Pyralidae)," Proceedings of the Entomological Society of Washington 114(4), 433-438, (1 October 2012). https://doi.org/10.4289/0013-8797.114.4.433
Published: 1 October 2012
JOURNAL ARTICLE
6 PAGES


Share
SHARE
KEYWORDS
chorionic sculpturing
micropylar region
SEM
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top