. Blood-sucking mosquitoes of the subtribe Culisetina (Diptera, Culicidae) in world fauna. Mosquitoes. 17 In mosquitoes of the genus Aedes from the central European part of the USSR, Sazonova (1960) noticed a similarity in the pat- tern formed by the scales on the thoracic calli; she then used this pattern as a significant systematic character. She studied Culisetina mosquitoes (C. bergrothi, ? annulata subochrea, C. alaskaensis indica, A. longiareolata, and some others) for this character and found variability in distribution of light scales on the thoracic calli. On this basis she concl
. Blood-sucking mosquitoes of the subtribe Culisetina (Diptera, Culicidae) in world fauna. Mosquitoes. 17 In mosquitoes of the genus Aedes from the central European part of the USSR, Sazonova (1960) noticed a similarity in the pat- tern formed by the scales on the thoracic calli; she then used this pattern as a significant systematic character. She studied Culisetina mosquitoes (C. bergrothi, ? annulata subochrea, C. alaskaensis indica, A. longiareolata, and some others) for this character and found variability in distribution of light scales on the thoracic calli. On this basis she concluded that it is impossible to use this feature as an important systematic character (Fig. 12). 20 The pattern of scales on the dorsal surface is also variable (Fig. 11). It is of particular significance only in A. longiareolata, in which this pattern is invariably more distinct due to the presence of very large prominent white scales (Fig. 11, 21 to 24). The chaetotaxy of the thorax was long used as a systematic char- acter for mosquitoes of the family Culicidae (Fig. 13). One of the most important systematic features distinguishing the genus Culiseta from other Culicini genera is the presence of spiracular setae located anteriorly and above the anterior spiracle and turned along the side of the latter (Fig. 13). However, the spiracular setae are present in varying numbers not only in Culiseta, but in other genera including Goeldia\=TricAoprosopon, Johnbelkinia and Shannoniana, in part], Tripteroides, Sabethes, Wyeomyia, Topo- myia and Harpagomyia [=Malaya]. Martini (1931) associated their presence with the body dimensions of mosquitoes. He suggested that in the smaller species the preepimeral setae serve the function of. 5 6 7 20 Fig. 12. Types (/ to 8) of thoracic pattern on the 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
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