Scanning electron microscopy of eggs of Mansonia uniformis, Ma. indiana, Ma. annulifera, and Ma. annulata (Diptera: Culicidae).

The eggs of Mansonia uniformis, Ma. indiana, Ma. annulifera, and Ma. annulata are described with the aid of scanning electron micrographs. Comparisons of egg structure among the four species showed that the eggs differed discernibly with respect to the outer chorionic tubercles on the anterior tube, the spines surrounding the raised central micropyle within the anterior cup, and the outer chorionic tubercles in the posterior region. Attempts to produce a key for identification of these eggs under scanning electron microscopy are discussed.