. Coleoptera. Rhynchophora:-Curculionidæ,. Curculionidae. ma. Ttux. d. Fig. 3.—Mouth-parts of: a, E2nsomvs suhnitejis, Mshl.; b, Dicranotropis aschabadensis, Fst.; c. Ajjoderus cygoieus. F.; d, Alcides pectoralis, Eoh.; f, Sipalus hi/'pocrita, Boh.; ma, mandible; mc, lueutuni ; ^:)ff, maxillary palpus ; ^JfZ, peduncle of submentum. Mouth-parts (figs. 2-5).—The mouth-parts are contained in the terminal aperture, or buccal cavity, and in the species with a slender rostrum thej^ are naturally much r(?duced in size. The most noticeable feature is the great reduction of the palpi, which are invaria

- Image ID: REHPAK
. Coleoptera. Rhynchophora:-Curculionidæ,. Curculionidae. ma. Ttux. d. Fig. 3.—Mouth-parts of: a, E2nsomvs suhnitejis, Mshl.; b, Dicranotropis aschabadensis, Fst.; c. Ajjoderus cygoieus. F.; d, Alcides pectoralis, Eoh.; f, Sipalus hi/'pocrita, Boh.; ma, mandible; mc, lueutuni ; ^:)ff, maxillary palpus ; ^JfZ, peduncle of submentum. Mouth-parts (figs. 2-5).—The mouth-parts are contained in the terminal aperture, or buccal cavity, and in the species with a slender rostrum thej^ are naturally much r(?duced in size. The most noticeable feature is the great reduction of the palpi, which are invaria
The Book Worm / Alamy Stock Photo
Image ID: REHPAK
. Coleoptera. Rhynchophora:-Curculionidæ,. Curculionidae. ma. Ttux. d. Fig. 3.—Mouth-parts of: a, E2nsomvs suhnitejis, Mshl.; b, Dicranotropis aschabadensis, Fst.; c. Ajjoderus cygoieus. F.; d, Alcides pectoralis, Eoh.; f, Sipalus hi/'pocrita, Boh.; ma, mandible; mc, lueutuni ; ^:)ff, maxillary palpus ; ^JfZ, peduncle of submentum. Mouth-parts (figs. 2-5).—The mouth-parts are contained in the terminal aperture, or buccal cavity, and in the species with a slender rostrum thej^ are naturally much r(?duced in size. The most noticeable feature is the great reduction of the palpi, which are invariably very short and rigid (except in the Eiii>'OMACERTN^Ti:). and often entirely concealed. In various groups the mentum exhibits striking differences in its relation to the otlier parts of the mouth (fig. 3), and this was utilised by Lacordaire in his primary division of the family into Curculionid.tj Adelogivathi and CuECULioNiD^ Phaneeognaxhi. In the Adelognathi (figs. 3, «, and 4, rt, c) the large, obtuse and pincer-like mandibles occupy the greater part of the buccal cavity and the small space left behind them is completely or almost completely filled by the mentum. In the completely adelognathous genera the maxillae. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marshall, Guy Anstruther Knox, 1871-. London, Taylor and Francis; [etc. , etc. ]