Insects injurious to fruits . r, and finallydestroy it either in the lar-val or the chrysalis state:it is believed that fullyfour-fifths of the larvaeperish in this manner. Thelargest of these parasites,and perhaps the commonestof them all, is the Long-tailed Ophion, Ophion ma-cruruin (Linn.) (Fig. 73), a large, yellowish-brown female of this fly deposits her eggs on the skin of hervictim, where the young larvae soon hatch, and, having firmlyattached themselves, feed externally, sucking the juices of thecaterpillar. After the latter has attained full growth, formed its cocoon, an
Insects injurious to fruits . r, and finallydestroy it either in the lar-val or the chrysalis state:it is believed that fullyfour-fifths of the larvaeperish in this manner. Thelargest of these parasites,and perhaps the commonestof them all, is the Long-tailed Ophion, Ophion ma-cruruin (Linn.) (Fig. 73), a large, yellowish-brown female of this fly deposits her eggs on the skin of hervictim, where the young larvae soon hatch, and, having firmlyattached themselves, feed externally, sucking the juices of thecaterpillar. After the latter has attained full growth, formed its cocoon, and become a^^^- ^^ chrysalis, this useful para- site causes its death. Whenfull grown, the larva of theparasite is a large, fat, foot-less grub (Fig. 74), whichspins an oblong-oval cocoonwithin the Crecopia chrysalis, and escapes as a fly, sometimesin the autumn, but more frequently in the following two-winged fly, a species of Tachina (Fig. 46), is also veryfrequently found as a parasite on the caterpillar. The larva.
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Keywords: ., bookcentury1900, bookdecade1900, bookidin, booksubjectinsectpests
