. Blood-sucking mosquitoes of the subtribe Culisetina (Diptera, Culicidae) in world fauna. Mosquitoes. 22 in claw structure have long been used as a systematic character in the claw formula (Howard, Dyar and Knab, 1913, 1915; Martini, 1929-31). In the males of all Culisetina mosquitoes (Fig. 16), this formula is numerically expressed as 2:1, 2:1, 0:0 and in females (Fig. 15) as 0:0, 0:0, 0:0, that is, the foreclaws in the fore- and 24 midtarsi of males have two teeth and in the hindtarsi one tooth; the claws are simple, without teeth, on the hindtarsi of males and in all legs of the females. T
. Blood-sucking mosquitoes of the subtribe Culisetina (Diptera, Culicidae) in world fauna. Mosquitoes. 22 in claw structure have long been used as a systematic character in the claw formula (Howard, Dyar and Knab, 1913, 1915; Martini, 1929-31). In the males of all Culisetina mosquitoes (Fig. 16), this formula is numerically expressed as 2:1, 2:1, 0:0 and in females (Fig. 15) as 0:0, 0:0, 0:0, that is, the foreclaws in the fore- and 24 midtarsi of males have two teeth and in the hindtarsi one tooth; the claws are simple, without teeth, on the hindtarsi of males and in all legs of the females. Thus, the work of Martini (1929-31) (pp. 204 and 218) showing that the males of Culiseta alaskaensis and C. morsitans have claws conforming to the formula 2:1, 1:2, 0:0 appears to be erroneous. A long hairy empodium is present at the distal end of the fifth segment between the bases of the claws (Figs. 15 and 16). Depending on the general body color of the mosquito, the color of the legs varies with the type of scales covering the integument. The color varies from dense black (C. bergrothi and C. melanura) to light yellowish-brown (C. annulata subochrea, C. alaskaensis indica, Allotheobaldia longiareolata, and others) with intermediate brown shades of different intensities. In some cases, the scales are uniformly dark and then no pattern appears on the legs (C. bergro- thi, ? glaphyroptera, C. impatiens, C. inornata and C. melanura, Fig. 17). A very light, often pale, distal surface of the femora is observed in these Fig. 15. Tip of female tarsus. a—lateral view; b—ventral 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
Size: 3081px × 811px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiodiversi, booksubjectmosquitoes
