. The practical study of malaria and other blood parasites. Malaria; Mosquitoes; Trypanosoma; Blood. 6i T/ie Imago.—The imago is the well-known winged insect. The emergence of the imago may be seen on the surface of almost any collection o^f foul water. Shortly after hatching, the insect may be seen resting quietly upon the surface of the water, and does not fly away when disturbed, or only very feebly. For some considerable time after hatching (twenty-four hours) the insects refuse to Fig. 13. Heads of Male ( $) and Female (?) Culex. In the imago there are marked differences between th
. The practical study of malaria and other blood parasites. Malaria; Mosquitoes; Trypanosoma; Blood. 6i T/ie Imago.—The imago is the well-known winged insect. The emergence of the imago may be seen on the surface of almost any collection o^f foul water. Shortly after hatching, the insect may be seen resting quietly upon the surface of the water, and does not fly away when disturbed, or only very feebly. For some considerable time after hatching (twenty-four hours) the insects refuse to Fig. 13. Heads of Male ( $) and Female (?) Culex. In the imago there are marked differences between the male and the female insect. The Male.—In the male the antennae are markedly plumose. The palps also are long and hairy. The effect is to make the ' head' of the male mosquito very conspicuous (Fig. 13). The male mosquito, with the exception of certain species, does not feed upon blood, and the proboscis is only used to suck in vegetable juices. The male of Stegomyia mosquitoes, however, is said to suck blood like the female. The Female.—In the female the antennae are inconspicuous and have only short lateral hairs. The palps are also less conspicuous than in the "male (Fig. .13).. 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 Stephens, John William Watson, 1865-; Christophers, S. R. (Samuel Rickard), 1873-; Liverpool School of Tropical Medicine. London, Pub. for the Univ. Press of Liverpool by Williams & Norgate
Size: 2778px × 900px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectb, booksubjectmalaria
