. Smithsonian miscellaneous collections. (Publication 3815) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION APRIL 1, 1946 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOLUME 104, NUMBER 18 THE SKELETAL ANATOMY OF FLEAS(SIPHONAPTERA) (With 21 Plates) BY R. E. SNODGRASS Bureau of Entomology and Plant Quarantine Agricultural Research Administration U. S. Department of Agriculture. (Publication 3815) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION APRIL 1, 1946 %%t Bori> (§altimott (pvtee BALTIMORE, MD., U. S. A. THE SKELETAL ANATOMY OF FLEAS(SIPHONAPTERA) By R. E. SNODGRASS Bu
. Smithsonian miscellaneous collections. (Publication 3815) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION APRIL 1, 1946 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOLUME 104, NUMBER 18 THE SKELETAL ANATOMY OF FLEAS(SIPHONAPTERA) (With 21 Plates) BY R. E. SNODGRASS Bureau of Entomology and Plant Quarantine Agricultural Research Administration U. S. Department of Agriculture. (Publication 3815) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION APRIL 1, 1946 %%t Bori> (§altimott (pvtee BALTIMORE, MD., U. S. A. THE SKELETAL ANATOMY OF FLEAS(SIPHONAPTERA) By R. E. SNODGRASS Bureau of Entomology and Plant Quarantine, Agricultural ResearchAdministration, U. S. Department of Agriculture (With 21 Plates) CONTENTS Page Introduction 2 I. The head 3 II. The feeding apparatus 10 The labrum and the prestomum 10 The epipharynx and the sucking apparatus 11 The maxillae 13 The hypopharynx and the salivary pump 15 The labium 16 The mechanism of feeding 17 III. The thorax 20 The prothorax 21 The mesothorax 22 The metathorax 24 IV. The legs 27 V. The abdomen 32 The pregenital segments 33 The eighth abdominal segment 35 The ninth abdominal segment 36 The tenth abdominal segment 38 VI. The spiracles 42 The first thoracic spiracles 42 The second thoracic spiracles 43 The abdominal spiracles 43 VII. The female genitalia 45 VIII. The male genitalia 48 The claspers
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Keywords: ., bookauthorsm, bookcentury1800, bookdecade1860, booksubjectscience
