. Blood-sucking mosquitoes of the subtribe Culisetina (Diptera, Culicidae) in world fauna. Mosquitoes. 97 ???, the egg tooth is distinctly visible and the ventral brush is absent. Moreover, the 1st instar larvae of all Culisetina have less distinct chaetotaxy: many setae on the head and the posterior end of the body are simple and single, while they are branched in the 2nd and subse- quent stages (Table 4). The 1st instar larvae also differ in dimen- sions. This factor is very convenient in distinguishing all stages in live material as Table 4 indicates. An excellent additional feature permitt
. Blood-sucking mosquitoes of the subtribe Culisetina (Diptera, Culicidae) in world fauna. Mosquitoes. 97 ???, the egg tooth is distinctly visible and the ventral brush is absent. Moreover, the 1st instar larvae of all Culisetina have less distinct chaetotaxy: many setae on the head and the posterior end of the body are simple and single, while they are branched in the 2nd and subse- quent stages (Table 4). The 1st instar larvae also differ in dimen- sions. This factor is very convenient in distinguishing all stages in live material as Table 4 indicates. An excellent additional feature permitting the differentiation of the first instar larvae of all members of the genus Culiseta is the distinct separation of primary and secondary sclerotization of the siphon (Fig. 49). This feature is not, however, applicable to the larvae of Allotheobaldia longiareo- lata since such a distinction of siphon sclerotization is often seen in their 2nd A0 J. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Maslov, A. V; Ward, Ronald A. Washington : Smithsonian Institution Libraries : National Science Foundation
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