. An encyclopædia of gardening; . num-bers of water-fowl and wild-fowl which it attracts, as it forms the favorite food of their young. Thefecundity of the common gnat {C. pipiens) (fig. 410. k) is as remarkable as that of the flesh-fl_v. 2268. The tabanus genus greatly resembles musca, and produces some species troublesome to men andother animals on whose blood they feed. The spider fly (Ilippobosca) inhabits woods. The species knownas the forest-fly [H. equina) [fig. 410. /) is particularly tormenting to the horse. 2269. The aptera, or insects without wings in both sexes, is composed of gene
. An encyclopædia of gardening; . num-bers of water-fowl and wild-fowl which it attracts, as it forms the favorite food of their young. Thefecundity of the common gnat {C. pipiens) (fig. 410. k) is as remarkable as that of the flesh-fl_v. 2268. The tabanus genus greatly resembles musca, and produces some species troublesome to men andother animals on whose blood they feed. The spider fly (Ilippobosca) inhabits woods. The species knownas the forest-fly [H. equina) [fig. 410. /) is particularly tormenting to the horse. 2269. The aptera, or insects without wings in both sexes, is composed of genera of suchvaried forms, that no other general characters can be affixed. Linnaeus comprehended inthis order spiders, lice, lobsters, crabs, shrimps, &c. which Leach and most other modernnaturalists class separately. 2270. The louse {Pediculus) and flea (Pulex) are well known : the only genera of this order which ai e trou-blesome in gardens are the mite-spider {Acarus), the common spider (Aranea), and the woodlouse (Onivcvi.^. 411 2271. The red spider is the Acarus tellurius, L. (fig. 411. a), andthe same name is also applied by gardeners to the scarlet acarus{A. holosericeus, L.) (6), the only two British species of the genuswhich infest plants, and to which perhaps they do more injurythan all other insects put together. Watering over the leaves isthe well known preventive and remedy: the water should beapplied to both sides of the leaf in a finely divided state, and withgreat force, so as to dash the insects to the ground. For thispurpose Reads syringe is the most eiKcient implement at presentin use. The sheep-tic {A. reduviiis) {c), the dog-tic {A. ricini/s)(d), the cheese-mite [A. siro), and the itch-mite (mite de la gale,Fr.) [A, exulcerans, L.) which inhabits the ulcers of the itch, arethe principal species mentioned by Linnseus ; but some naturalistsconsider that every animal, and most plants, have their peculiarspecies of acarus. The harvest bug is by some considered a
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Keywords: ., bookcentury1800, bookdecade18, booksubjectgardening, bookyear1826
