. Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Insect Sttddy 343 who do not know that caterpillars never lay eggs, have called, eggs. But the sphinx moths at any stage would have horror of such eggs as these! They are not eggs iaut are httle silken cocoons spun by the larvae of a hymenopterous parasite. It is a tiny, four-winged "fly" which lays its eggs within the caterpillar. The little grubs which hatch from these eggs feed upon the fleshy portions of the caterpillar until they get their growth, at which time the poor
. Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Insect Sttddy 343 who do not know that caterpillars never lay eggs, have called, eggs. But the sphinx moths at any stage would have horror of such eggs as these! They are not eggs iaut are httle silken cocoons spun by the larvae of a hymenopterous parasite. It is a tiny, four-winged "fly" which lays its eggs within the caterpillar. The little grubs which hatch from these eggs feed upon the fleshy portions of the caterpillar until they get their growth, at which time the poor caterpillar is almost exhausted; and then they have the impudence to come out and spin their silken cocoons and fasten them to the back of their victim. Later, they cut a little lid to their silken cells which they lift up as they out into the world to search for more caterpillars. As soon as the sphinx larva has ob- tained its growth, it descends and burrows into the earth. It does not spin any cocoon but packs the soil into a smooth-walled cell in which it changes to a pupa. In the spring the pupa works its way to the surface of the ground and the moth issues. In the case of the tomato and tobacco sphinx pupa, the enor- mously long tongue has its case separate from the body of the pupa, which makes the "jug ; The wing cases and the antennte cases can be distinctly seen. In the case of the other species the pupae have the tongue case fast to the body. The larva of the myron sphinx does not enter the ground, but draws a few leaves about it on the surface of the ground, fastens them with silk and there changes to a pupa. References—Caterpillars and their Moths, Elliot and Soule; Moths and Butterflies, Dickerson; Moths and Butterflies, Ballard; Manual for the Study of Insects, A full-grown caterpillar of the Myron Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability
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