Alencar J., Dégallier Nicolas, Guimaraes A.E., Costa J.M., Marques W.D., Silva V.C., Santos Mallet J.R.D. (2008). Scanning electron microscopy of the egg of Haemagogus tropicalis. Journal of the American Mosquito Control Association, 24 (1), p. 16-20. ISSN 8756-971X.
Titre du document
Scanning electron microscopy of the egg of Haemagogus tropicalis
Journal of the American Mosquito Control Association, 2008,
24 (1), p. 16-20 ISSN 8756-971X
Haemagogus tropicalis is strictly a forest-dwelling species from the fertile valley area of the Amazonia forest. It is a diurnal mosquito, and the oviposition sites for the species include tree holes. The eggs of Hg. tropicalis used in this study were from females captured on Combu Island, situated across from the city of Belem, Guajara Bay, state of Para, at 1 degrees 25'S latitude and 48 degrees 25'W longitude. The eggs are elliptical and similar to 575 mu m long with a width of similar to 144 mu m. The ventral surface of the chorionic reticulum has regular chorionic cells with hexagonal and sometimes pentagonal ornamentation. Each chorionic cell has a thick external chorionic reticulum with regular borders. The interior of the chorionic cells have small, evenly distributed tubercles, and the dorsal external chorionic reticulum appears porous. The micropylar apparatus, located on the anterior area of the egg, was formed by a collar with a well-developed frame. Centrally, the micropylar disc had a diameter of similar to 20 gm and the micropylar orifice is 2.1 mu m in diameter. These data may enable construction of taxonomic keys for identifying eggs of Haemagogus species.
