The Cambridge Natural History, Volume 5

abdomen Acridiidae adult alar organs alimentary canal animal antennae appearance appendages apterous Blattidae called cells cerci Chilognatha Chilopoda chitinous cocoon colour consists coxae creature delicate described division dorsal earwigs ecdysis eggs elongate embryo exist external extremity eyes female fossil frequently front galls ganglia ganglion genera genus habits hatched head Hymenoptera imago individuals Insects integument joints known labium large number larva latter living lobe Locustidae locusts male mandibles Mantidae maxillae membrane mesothorax metamorphosis metathorax moult mouth Myriapods nerve nervures Neuroptera nymph Order orifice Orthoptera ovipositor pairs of legs papillae parasitic parthenogenesis peculiar perfect Insect Peripatus Perlidae placed portion possess posterior present pronotum prothorax pupa remarkable resemblance sclerites side skin slender species specimens spiracles stages structure surface tegmen tegmina terminal Termitidae thorax Thysanura tibiae tion tracheal system transverse Tribe tubes usually ventral plate wingless wings young Zool