Outlines of entomology . CHAPTER HYMENOPTERA. Section Teeebrantia. PARASITES AND GALL-FLIES. [Fig. 19.]. Icineumon Fly (after Riley). This division of the HYMENOPTERA includes both the species thatare of most service to man, and those that are most directly are grouped in the same section because in all, the ovipositor isa 2)iercer, adapted for penetrating either hard or soft substances. It is OUTLINES OF ENTOMOLOaY. 45 usually a conspicuous appendage of the abdomen, and is of a variety ofsingular forms, but is not connected with any poison gland, and whilethat of some
Outlines of entomology . CHAPTER HYMENOPTERA. Section Teeebrantia. PARASITES AND GALL-FLIES. [Fig. 19.]. Icineumon Fly (after Riley). This division of the HYMENOPTERA includes both the species thatare of most service to man, and those that are most directly are grouped in the same section because in all, the ovipositor isa 2)iercer, adapted for penetrating either hard or soft substances. It is OUTLINES OF ENTOMOLOaY. 45 usually a conspicuous appendage of the abdomen, and is of a variety ofsingular forms, but is not connected with any poison gland, and whilethat of some species may intiicta sharp prick, it is in no case a true sting. Among the Piercers are found those species that vary most fromwhat is considered the type of the Order, many of which, in points oftheir general structure, and in the forms of their larvce, seem to beclosely allied to the Lepidoptera. The Piercers (Terebrantia) are very conveniently separatedintotwo tribes: 1. Insect eaters (Entomophaga), Parasitic flies, and also Gall-flies, and a very few other vegetable feeders. 2. Plant eaters (Phytophaga),
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectentomology, bookyear1
