. The book of the garden. Gardening. TURNIP APHIS, MALE. scribed by Mr Stephens, in the "Book of the Farm," vol. ii. p. 77: " Fig. 67 represents the winged male of the common turnip plant-louse. Aphis rapce, magnified. Its characters are ochra- ceous ; horns moderately long, setacious; two first joints black, third ochraceous at the base; head blackish ; coUar ochraceous and brown ; disc of shining black; abdomen greenish ; wings irridescent; the nervures light brown; tips of the thighs, shanks, feet, and claws black. Abun- dant beneath the leaves of the common turnip the whole
. The book of the garden. Gardening. TURNIP APHIS, MALE. scribed by Mr Stephens, in the "Book of the Farm," vol. ii. p. 77: " Fig. 67 represents the winged male of the common turnip plant-louse. Aphis rapce, magnified. Its characters are ochra- ceous ; horns moderately long, setacious; two first joints black, third ochraceous at the base; head blackish ; coUar ochraceous and brown ; disc of shining black; abdomen greenish ; wings irridescent; the nervures light brown; tips of the thighs, shanks, feet, and claws black. Abun- dant beneath the leaves of the common turnip the whole of July, &c. It is at once distiu-. TURNIP APHIS, FEMALE. guished from the other species by its long tubes and small apical cells of the wings. The cross lines below represent the natural size of the body and of the expanse of the wings. Fig. 68 is the female of the same species magnified. It is bright green, sha- greened; horns fuscous, except at the base; eyes, tips of shanks, and feet black. The small figure on the left represents the aphis of the natural size; and the figure below re- presents one of the na- tural size just ; Rurioola, in "Gardeners' Chronicle," 1847, p. 21, of this insect says : " It is to be hoped that the species of the aphides will be determined, that it may be settled whether those found on the turnip (of which there are three species), the potato, the spinach, &c., be identical or dif- ferent. Another object will be to ascertain if the aphides actually feed upon the leaves and shoots of the later plants, and breed ; Of the Aphis rapce, he continues: "I do not re- member ever observing it before midsummer. In July it becomes abundant, and in favourable seasons continues increasing until the end of October, or later. The first are hatched from eggs, and it is said are all females; these bring forth young until the autumn, when males are produced, as well as females furnished with wings. These lay eggs
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectgardening, bookyear18
