The entomologist's text book : an introduction to the natural history, structure, physiology and classification of insects, including the Crustacea and Arachnida . )terous, and ABDOMINAL APPENDAGES OF PUP^. 213 fig. 48 a dipterous pupa; the latter stripped from thecocoon-like skin of the larva. The letter h refers to the. Fig. 4S. Disengaged pupa of Stratiomys chamseleon. head, t the thorax, a the abdomen, a a the antennae, e e theeyes, m the mouth, p the palpi, w the fore wings, w w theposterior wings, i i i i the legs. It must, however, be borne in mind, that in these pupaethe Umbs have not
The entomologist's text book : an introduction to the natural history, structure, physiology and classification of insects, including the Crustacea and Arachnida . )terous, and ABDOMINAL APPENDAGES OF PUP^. 213 fig. 48 a dipterous pupa; the latter stripped from thecocoon-like skin of the larva. The letter h refers to the. Fig. 4S. Disengaged pupa of Stratiomys chamseleon. head, t the thorax, a the abdomen, a a the antennae, e e theeyes, m the mouth, p the palpi, w the fore wings, w w theposterior wings, i i i i the legs. It must, however, be borne in mind, that in these pupaethe Umbs have not yet acquired their full size, and the abdo-men is not yet reduced to the size which it will possess inthe imago state. Pupae are ordinarily of an elongated oval form, the thick-est part being towards the head; the body is generallysmooth, but in some instances various spines or hairs are tobe observed upon various parts of the body ; and others, espe-cially the chrysalides of butterflies, are angulated. In someaquatic pupae, as in the midges, forming the genus Chlrono-mus, the back of the front part of the thorax is furnishedwith exserted breathing organs. The structm*e of the ter-minal segment of the body is also vaiiable ; one of the mostremarkable variations occurs in some of the butterflies, inwdiich this part
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Keywords: ., bookau, bookcentury1800, booksubjectcrustacea, booksubjectinsects
