. Coleoptera : general introduction and Cicindelidae and Paussidae. members of thefamily are small and obscure insects, they have been muchneglected. They are probably abundant inIndia, the following genera being amongthose represented there :— Hydrophilus,Hydrous, Sternolophus, Hydrobius, Philhy-drus, Berosas, Brachygaster, Globaria, Arn-phiops, Hydrochus, Cyclonotum, Cercyon andSpjhceridium. A considerable number of the specieshave the maxillary palpi very long, muchlonger than the antennae, and on thisaccount Mulsaut and others have giventhe name Palpicornia or Palpicornesto the family ; th
. Coleoptera : general introduction and Cicindelidae and Paussidae. members of thefamily are small and obscure insects, they have been muchneglected. They are probably abundant inIndia, the following genera being amongthose represented there :— Hydrophilus,Hydrous, Sternolophus, Hydrobius, Philhy-drus, Berosas, Brachygaster, Globaria, Arn-phiops, Hydrochus, Cyclonotum, Cercyon andSpjhceridium. A considerable number of the specieshave the maxillary palpi very long, muchlonger than the antennae, and on thisaccount Mulsaut and others have giventhe name Palpicornia or Palpicornesto the family ; the character is ,however, very strongly marked in allcases. The larvae of the group are very different,several of them presenting very strangecharacters. Schiodte in his work on the larvae of Coleoptera(Naturhist. Tidsskr. 1861-1873, T. viii-ix) has described andfigured the larvae of eight or nine genera. The head, as a rule, issmall, but in Spterclieus it is very large ; in Hydrous the segmentsare furnished at the sides with long fringed appendages (much as. Fig. 55. Hydrophilus olivaceus. HVDROPIIILIDiE. 129 in Gyrinus) which appear to aid respiration ; in the case of Berosusthe larva is broad, fusiform, and furnished at the sides with verylong and slender branchial appendages, some of which are almostas long as the whole abdomen ; the larva of Helophorus is parallel-sided, with the prothoracic segments chitinous and with chitinousplates on the abdomen, without lateral processes, but with twovery long 3-jointed cerci at the apex ; the larva of Sphceridium isgrub-shaped, considerably narrowed in front, with an extremelysmall head, and a broad anal segment, with four short teeth at theapex, and two conical appendages on each side; it is practicallylegless; that of Cercyon differs little but in minor possesses a very distinct larva, broad and more or lessovate, with a very large head and powerful jaws, with hairy pro-tuberances at the sides of the abd
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbeetles, bookyear1912
