. Blood-sucking mosquitoes of the subtribe Culisetina (Diptera, Culicidae) in world fauna. Mosquitoes. 8 partly reduced. Having studied this aspect in some members of the family Culicidae, Marshall, Staley and Staley (1935) presented some interesting data on the comparative measurements of the length of maxillae and mandibles in percentage of the length of the proboscis: according to their data, in Culiseta mosquitoes, the maxillae of males are marked by maximum relative length compared to other Culicinae. The results of a special study of this character in various members of Culisetina are pr
. Blood-sucking mosquitoes of the subtribe Culisetina (Diptera, Culicidae) in world fauna. Mosquitoes. 8 partly reduced. Having studied this aspect in some members of the family Culicidae, Marshall, Staley and Staley (1935) presented some interesting data on the comparative measurements of the length of maxillae and mandibles in percentage of the length of the proboscis: according to their data, in Culiseta mosquitoes, the maxillae of males are marked by maximum relative length compared to other Culicinae. The results of a special study of this character in various members of Culisetina are presented in Table 1. The table shows that the mandibular index (ratio of its length to that of proboscis along with labial palps) is greatest in males and most variable in members of the subgenus Culiseta s. str. and in Allotheobaldia lon- giareolata. This index is noticeably low in members of the subgenus Culicella. The maxillary indices also vary in roughly the same pro- portion (Table 1). Attention should be paid to the structures of the maxillary palps which are often used as taxonomic 13 Fig. 8. Classes (/-5) of the structure of the 2nd and 3rd maxillary palpal segments in males. In the literature, the number of maxillary palpal segments in males and females has been a very controversial subject. Howard, Dyar and Knab (1913, 1915) referred to 5-segmented palps in males and 4-segniented in females of Culex pipiens. Becker (1908) referred to 4-segmented palps in males and females of Culex pipiens but 5-segmented palps in males of A. longiareolata; Meinert (1886) and Ficalbi (1899) showed 4 and 3 segments for males and females, respectively. Matheson (1929 and 1944) noted that the number of. 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 Inst
Size: 1950px × 1281px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiodiversi, booksubjectmosquitoes
