The document discusses the different types of larvae and pupae in insects. It describes three types of larvae: paurometabolous larvae found in Orthoptera and Hemiptera insects, aquatic insect larvae in Ephemeroptera, Odonata and Plecoptera, and holometabolous larvae in orders including Megaloptera, Neuroptera, Trichoptera, Lepidoptera, Mecoptera, Coleoptera and Diptera. It also lists three types of pupae: obtect, exarate and coactate pupae.