Elementary studies in insect life Elementary studies in insect life elementarystudie00hunt Year: 1902 176 ELEMENTAEY STUDIES IN INSECT LIFE These moth-like insects, small and rather unattractive, are not frequently noticed. Though possessed of two pairs of well-developed wings, they do not use them readily in flight, so that the adults rarely wander far from their place of emergence in some stream, brooklet, or pool. The mouth-parts of the adult are rudimentary, the metamorphosis com- plete. The eggs are deposited in a mass surrounded by jelly. Sometimes this mass contains as
Elementary studies in insect life Elementary studies in insect life elementarystudie00hunt Year: 1902 176 ELEMENTAEY STUDIES IN INSECT LIFE These moth-like insects, small and rather unattractive, are not frequently noticed. Though possessed of two pairs of well-developed wings, they do not use them readily in flight, so that the adults rarely wander far from their place of emergence in some stream, brooklet, or pool. The mouth-parts of the adult are rudimentary, the metamorphosis com- plete. The eggs are deposited in a mass surrounded by jelly. Sometimes this mass contains as many as one hundred eggs. FIG. 142. A caddis-fly (Leptocerus dilutus). Of greater interest than the adult, will be, to begin- ners, the larva and its habits. The young caddis-worm protects itself from fish and other enemies by con- structing a house of sticks, pebbles, leaves and the like, to be found in the water where it lives. The figure (Fig. 37) represents but one of the many interesting houses. Among the stones through which the waters of a small stream is running such forms live. ORTHOPTERA. Insects of this order have biting mouth-parts, two pairs of wings, the front wings being generally narrow and the hind wings of more delicate texture, and fold fan-like under the front wings; incomplete metamor- 1 Family, Phryganeidae.
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