. Elementary entomology. Insects. 244 ELEMENTARY ENTOMOLOGY SUBORDER I. THE BORING HVMENOPTERA (TEREBRANTIA) In the first suborder the females bear a well-developed ovipositor, with which the eggs are inserted into the food plant or host insect, and the trochanters of the hind-legs consist of two segments. 1. PLANT-EATING HYMENOPTERA The first two families are distinguishable by the base of the ab- domen being broadly joined to the thorax, with no constriction at this point. The saw-flies (Tenthredinidae) are so called on account of the saw- like ovipositor. It is toothed at the tip, having a
. Elementary entomology. Insects. 244 ELEMENTARY ENTOMOLOGY SUBORDER I. THE BORING HVMENOPTERA (TEREBRANTIA) In the first suborder the females bear a well-developed ovipositor, with which the eggs are inserted into the food plant or host insect, and the trochanters of the hind-legs consist of two segments. 1. PLANT-EATING HYMENOPTERA The first two families are distinguishable by the base of the ab- domen being broadly joined to the thorax, with no constriction at this point. The saw-flies (Tenthredinidae) are so called on account of the saw- like ovipositor. It is toothed at the tip, having a structure which enables the females to insert their eggs beneath the surface of leaves. d FIG. 385. The American rose-slug (Endelomyia rosae] a, adult saw-fly ; b, mature larva ; <r, work of larva on rose leaf ; </, piece of rose leaf showing location of egg near margin ; <?, egg. (a, b, c, and e enlarged, d, natural size.) (After Chitten- den, United States Department of Agriculture J or in the stems of plants. They are medium-sized insects from one fourth to one half of an inch long, usually blackish or yellow-and- black in color, with the wings folded over the back when at rest. The larvae resemble small caterpillars, but usually have a larger. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Sanderson, Dwight, 1878-1944; Jackson, C. F. (Cicero Floyd), b. 1882. Boston, New York [etc. ] Ginn and Company
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