Insects injurious to fruits . Fig. said to seek out and devour large quantities of the eggs of thecurculio. Two species of parasitesare known to attack thelarva of this pest. One,known as the Sigalphnscurculio parasite, Sigalphiiscurculionis Fitch, is a small^black, four-winged fly, rep-resented in Fig. 198, where a shows the male, and b thefemale. With her sharp ovij)Ositor the female punctures the skin of the curculio larva,and deposits an egg under-neath, which in due timeproduces a larva, as shownat«. Fig. 199. When thecurculio larva is destroyedby the parasite, tlie latterencloses i

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Insects injurious to fruits . Fig. said to seek out and devour large quantities of the eggs of thecurculio. Two species of parasitesare known to attack thelarva of this pest. One,known as the Sigalphnscurculio parasite, Sigalphiiscurculionis Fitch, is a small^black, four-winged fly, rep-resented in Fig. 198, where a shows the male, and b thefemale. With her sharp ovij)Ositor the female punctures the skin of the curculio larva,and deposits an egg under-neath, which in due timeproduces a larva, as shownat«. Fig. 199. When thecurculio larva is destroyedby the parasite, tlie latterencloses itself in a small,tough cocoon of yellowishsilk, 6, and then graduallyassumes the pupa state, as shown at c ; all these figures aremagnified. The other species, known as thePorizon curculio Fig. 200.

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Keywords: ., bookauthorsaunderswilliam183619, bookcentury1800, bookdecade1880