The entomologist's text book : an introduction to the natural history, structure, physiology and classification of insects, including the Crustacea and Arachnida . Figs. 38, Larva—39, Pupa coarctata—10, Imago of Stratiomys cliatna;leou. caterpillar {Eruca Latreille), and the obtected, or, asLatreille prefers calling it, the mummy-formed pupa {Chry-. Figs. 41, Larva; 42, Pupa inconnilcta; 43, Imago of Chrysomela populi. salis Latreille). The Diptera (figs. 38,39, and 40) arc ihs-tinguished by their worm-Uke larvai {Vermilarva Latreille), VARIATION IN PUP^. 201 and their more or less oviform pup
The entomologist's text book : an introduction to the natural history, structure, physiology and classification of insects, including the Crustacea and Arachnida . Figs. 38, Larva—39, Pupa coarctata—10, Imago of Stratiomys cliatna;leou. caterpillar {Eruca Latreille), and the obtected, or, asLatreille prefers calling it, the mummy-formed pupa {Chry-. Figs. 41, Larva; 42, Pupa inconnilcta; 43, Imago of Chrysomela populi. salis Latreille). The Diptera (figs. 38,39, and 40) arc ihs-tinguished by their worm-Uke larvai {Vermilarva Latreille), VARIATION IN PUP^. 201 and their more or less oviform pupa {Pupa Latreille);the Coleoptera (figs. 41, 42, and 43), Hymenoptera, and someDiptera, by the scaly head of the larva {Larva Latreille),and the disengaged limbs of the pupa {Nijmpha Latreille;)and the Orthoptera (figs. 30, 31), Hemiptera, &e., by theactive imago-like larva {Demi-larva Latreille), and active pupa{Demi-nympha). Thus, by an ingenious arrangement, wehave the following distribution of metamorphoses :— 1. Metamorphosis inchoafa, equivalent to the Linna^an section, ha\dng complete pupa. 2. M. dimidiata, semi-complete pupa. A. Respu-ation in larva tracheal. Gryllus, &c. {M. semi-completa Fabricius.) B. Respiration in larva branchial. Ephemera. { MacLeay.) 3. M. perfecta. Preparatory states. Semi-larva an
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Keywords: ., bookau, bookcentury1800, booksubjectcrustacea, booksubjectinsects
