Agriculture for beginners . Fig. 139. The Hoise Fly 1?. egg : fi. lar\-a. or maggot: <-, pupa; tf. adult male. (All enlarged) partly homy, and in folding lap over each other. Butterfliesand moths are much alike in appearance but differ in butterfly works by day and the moth by night. Notethe knob on the end of the butterflys feeler (Fig. 143).The moth has no such knob. It is important to know how insects take their food, forby knong this we are often able to destrov insect are provided with mouth parts for chewing theirfood; others have a long tube with which they pierc
Agriculture for beginners . Fig. 139. The Hoise Fly 1?. egg : fi. lar\-a. or maggot: <-, pupa; tf. adult male. (All enlarged) partly homy, and in folding lap over each other. Butterfliesand moths are much alike in appearance but differ in butterfly works by day and the moth by night. Notethe knob on the end of the butterflys feeler (Fig. 143).The moth has no such knob. It is important to know how insects take their food, forby knong this we are often able to destrov insect are provided with mouth parts for chewing theirfood; others have a long tube with which they pierce plantsor animals and, like the mosquito, suck their food from ORCHARD. GARDEN. AND FIELD INSECTS 147. adult: b. side view of sucking mouth-partBoth a and b are much enlarged the inside. Insects of this latter class cannot of course beharmed bv poison on the surface of the leaves on which they feed. Many insects changetlieir form from youth to oldage so much that you canscarcely recognize themas the same comes the egg. Theegg hatches into a worm-A Typical Big like animal known as a grub, maggot, or cater-pillar, or. as scientists callit, a lafia. This creature feeds and grows until finally it settlesdown and spins a homeof silk, called a cocoon(Fig. 1431. If we openthe cocoon we shall findthat the animal is nowcovered with a hard out-side skeleton, that it can-not move freely, and thatit cannot eat at all. Theanimal in this state isknown as the////a ( and 146). Some-times, however, the pupais not covered by a co-coon, sometimes it is soft,and sometimes it hassome power of motion (Fig. 141). After a rest in the pupastage the animal comes out a mature insect (Figs
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
