. Blood-sucking mosquitoes of the subtribe Culisetina (Diptera, Culicidae) in world fauna. Mosquitoes. 66. ? ? 54 Fig. 37. Groups (1 to 5) of labral structure in different Culisetina. joined inside with the frontal plate near spot a, are articulated to the sclerotized epipharyngeal levers and represent one of the points of heavy sclerotization of the frontal plate (Fig. 28). As pointed out by Bekker (1938a) and Monchadskii (1951), the function of the epi- pharynx is two-fold: it holds the food entering the oral cavity and, with the parts of the labrum, helps to direct the water current toward
. Blood-sucking mosquitoes of the subtribe Culisetina (Diptera, Culicidae) in world fauna. Mosquitoes. 66. ? ? 54 Fig. 37. Groups (1 to 5) of labral structure in different Culisetina. joined inside with the frontal plate near spot a, are articulated to the sclerotized epipharyngeal levers and represent one of the points of heavy sclerotization of the frontal plate (Fig. 28). As pointed out by Bekker (1938a) and Monchadskii (1951), the function of the epi- pharynx is two-fold: it holds the food entering the oral cavity and, with the parts of the labrum, helps to direct the water current toward the oral cavity. Unlike Anopheles, filaments predominate among the epipharyngeal processes in larvae of Culisetina. Furthermore, they are longer, thinner and more numerous in the filter feeders and shorter, thicker and fewer in scrapers. In the latter, various types of spines (cultriform, dolabriform, serrated, others, Fig. 31) and setae are well developed along with the filaments. The mandibles (Fig. 38) mark the boundary of the oral cavity on the dorsolateral surface. The mandibles consist of two valves: the flatter ventral and bulging dorsally. These transit into each other and form rounded anterior and outer margins. Along the posterior margin, the dorsal and ventral mandibular plates do not come into contact with each other but form a fairly broad longitudinal tube leading to the maxillary cavity, thus coming into contact with the oral cavity. The margin of the mandibular plate limiting this open- ing is heavily sclerotized. The mandibles bear different types of teeth, spines, processes and setae on their surface. On the inner margin two large spines stand out prominently turning toward the symmetrical jaw; they are. 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. Washingto
Size: 1740px × 1435px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiodiversi, booksubjectmosquitoes
