The Coleoptera of the British islandsA descriptive account of the families, genera, and species indigenous to Great Britain and Ireland, with notes as to localities, habitats, etc . this is shown inLucanus, and more especiallyin MehAontha; the club of Lu-canus is comparatively small,and is termed ajissate club. 5. Monili/urm : this is reallya transitional form betweenthe filiform and clavate an-tennfe : the joints of the an-tennas do not difler greatly insize, but are separately rounded,and present the appearance ofa string of beads (as in manyof the Chrjsomelidte). There are many other modi-f
The Coleoptera of the British islandsA descriptive account of the families, genera, and species indigenous to Great Britain and Ireland, with notes as to localities, habitats, etc . this is shown inLucanus, and more especiallyin MehAontha; the club of Lu-canus is comparatively small,and is termed ajissate club. 5. Monili/urm : this is reallya transitional form betweenthe filiform and clavate an-tennfe : the joints of the an-tennas do not difler greatly insize, but are separately rounded,and present the appearance ofa string of beads (as in manyof the Chrjsomelidte). There are many other modi-fications, l)ut the ones referredto are the most noteworthy,and on them have been foundedseveral great divisions of theColeoptera (Clxivieoruia, Serri-coriiia, Lainellkornia, &c.):these divisions are practicallyuseful, but it must be remem-bered that they are more or less artificial, and in many instances arefound to pass by gradations the one into the other. The antennie of the Rhynchophora arc very peculiar, and consist, as arule, of a very long first joint called the srajic, with which the otherjoints form au angle : the antennae usually end in a club, and in this case. 1. Filiforra. 2. C«i)itiite. 3. Peifoliato club. 4. Gcuiculatc. 5. Lnmcllato. 6. Fissiite club. 7. Serrate. 8. Pectiuate. INTRODUCTION. the joints between tlie scape and tlie club are termed the fiinkuhi/i: allsucb elbowed antennae are termed (jeniculate: the elong-ate first joint orscape, although not in so marked a degree as in the Khjnobophora, isfound in other Coleoptera, Cryptobium among the Staphylinidae, &c. Tlie tropin or mouth organs.—The Coleoptera belong to the mandi-bulate as opposed to the baustellate insects, that is to say they arefurnished with horizontally moving jaws for seizing and masticatingtheir food ; the haustellate insects, on the other hand, like the Lepid-optera, obtain their food by suction by means of a tube or tnmk : ifwe examine the underside of the head of any beetle we
Size: 1364px × 1832px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1, booksubjectentomology, bookyear1887
