Structure and classification of insects . a, clypeus ; 5, labrum ; c, mandibles ; d, maxillae ; «, labium ;/ labial palpi ; g, lingula of the labium. CHAPTER VI. the head. The Head is generally horny and round, and may bestudied as a whole in relation to its substa7ice,Jigure, com-position^ articulation^ with the trunk motions, and espe-cially as to its parts and appendages. We would consider the external anatomy of the headunder these three divisions, ^. e.: 1. Os, or mouth. 2. Facies, or tace—all the frontal and upper part ofthe head; and 3. Sub-facies, including the under part of the headan
Structure and classification of insects . a, clypeus ; 5, labrum ; c, mandibles ; d, maxillae ; «, labium ;/ labial palpi ; g, lingula of the labium. CHAPTER VI. the head. The Head is generally horny and round, and may bestudied as a whole in relation to its substa7ice,Jigure, com-position^ articulation^ with the trunk motions, and espe-cially as to its parts and appendages. We would consider the external anatomy of the headunder these three divisions, ^. e.: 1. Os, or mouth. 2. Facies, or tace—all the frontal and upper part ofthe head; and 3. Sub-facies, including the under part of the headand the neck. THE HEAD. 39. HEAD OF THE BEE. The Os, or Mouth, of the insect is provided withBeven ordinary organs, differently modified in the twogreat divisions of masticators^ or chewing insects, andsuckers^ or sucking insects. These are, 1st, the upperlip (labrum) ; 2d, the lower lip (labium); 3d, labial andother palpi, or feelers ; 4th, the upper jaws (mandibles);5th, under jaws (maxillae); 6th, the tongue (lingua);and, 7th, the pharynx.
Size: 2045px × 1222px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsects, bookyear1872
