Entomology

abdomen abdominal segments absent adult ancestor antennae appendages aquatic arthropods articulation beetles body C. S. Papp cerci CHAPTER classification cockroaches Coleoptera Collembola common compound eyes contains Copyright 1935 crossveins cuticle Dermaptera Diplura Diptera dorsal eggs ENDOPTERYGOTE ORDERS Entomol Ephemeroptera evolution evolved feed females Figure flies fore wings fossil function fused genitalia Grylloblattodea habits head Hemiptera hemipteroid Heteroptera hind wings Hinton Hymenoptera includes insects instars juvenile L. A. Swan labium large number larvae legs Lepidoptera lobes males Malpighian tubules mandibles Manton maxillae Mecoptera membranous Morphology moths mouthparts Neoptera North America occur ocelli Odonata organs Orthoptera ovipositor pair Paleoptera palps PANORPOID ORDERS parasitic Permian permission pests phylogeny plants posterior primitive pro-wings prothorax Protura Psocoptera Pupae pupal stage R. E. Snodgrass sclerotized Sharov species Strepsiptera structure suborder sucking sulcus Superfamily Swan and C. S. termites thoracic Thysanura Trichoptera usually veins ventral wing venation