. The book of the garden. Gardening. 826 OPEN FLOWER-GAEDEN. more than a quarter of an inch in the expansion of its fore-wings. It is of a beautiful green colour, -with several reddish-brown spots on the thorax. The fore-wings are of a pale buff colour with green veins, and the hind-wings are quite transparent; the antennae are yellowish, with tips dusky. The female has a horny ovipositor at the extremity of the body, with which, in all probability, she forms slits in the twigs in order to deposit her eggs, which are not hatched till May in the following year. The place, how- ever, in which th
. The book of the garden. Gardening. 826 OPEN FLOWER-GAEDEN. more than a quarter of an inch in the expansion of its fore-wings. It is of a beautiful green colour, -with several reddish-brown spots on the thorax. The fore-wings are of a pale buff colour with green veins, and the hind-wings are quite transparent; the antennae are yellowish, with tips dusky. The female has a horny ovipositor at the extremity of the body, with which, in all probability, she forms slits in the twigs in order to deposit her eggs, which are not hatched till May in the following year. The place, how- ever, in which the eggs are placed has not yet been observed ; but the strong horny texture of the instrument for oviposition seems to indicate the habit similar to that of the Cicadse, or ; The broad-leaved box, especially when it has at- tained some size, is more liable to its attacks than the narrow-leaved varieties, and more so when grown as a shrub than when planted as edgings. The black horned leaf-miner (Phytomyza nig- ricornis), fig. 11.âThis is one of the many of the smaller species of moths, flies, and beetles, which deposit their eggs either on the under side of the leaves, or probably, in some cases, under the skin or cuticle of the leaves of green- house and flower-garden plants. Although much less injurious to the general health of plants than many other insects, the whole of these minute miners are vexatious enough from the sickly appearance their presence gives to plants. The Phytomyza nigricornis, in its maggot state, carries on its depredations by burrowing between the upper and lower cuticles of the leaves and devouring the parenchyma, in which it forms long and irregular galleries, and there changes into its pupa state, and afterwards, into the perfect fly. The female is somewhat larger than the male, and both, when fully grown, are of a dull ash or slate colour; the head is ochreous in front, of a dark slate colour behind ; the antennae are small and drooping
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectgardening, bookyear18
