. A text-book of invertebrate morphology. Invertebrates. 512 INVERTEBRATE MORPHOLOGY. tlie imago, very different in appearance from the pupa. The metamorphosis here approaches the complete type. 9. Order Coleoptera. The order Coleoptera includes the Beetles and is richer in species than any other order of animals. The members of the group are characterized by the anterior wings being con- verted into hard chitinous plates, the elytra, which cover in and protect the posterior membranous wings and the abdo- den, being short only in a few forms, such as the Burying- beetles {Necrophorus), in whic
. A text-book of invertebrate morphology. Invertebrates. 512 INVERTEBRATE MORPHOLOGY. tlie imago, very different in appearance from the pupa. The metamorphosis here approaches the complete type. 9. Order Coleoptera. The order Coleoptera includes the Beetles and is richer in species than any other order of animals. The members of the group are characterized by the anterior wings being con- verted into hard chitinous plates, the elytra, which cover in and protect the posterior membranous wings and the abdo- den, being short only in a few forms, such as the Burying- beetles {Necrophorus), in which the tip of the abdomen remains exposed, and the Staphylinidse, or Rove-beetles, and Mdo'e, in which they cover only the more anterior portions of the ab- domen, the posterior wings in the last-named form being wanting, as they may also be in some of the Weevils. Occa- sionally, as in the Fireflies {Lampyris), the elytra are but slightly thickened, and in some forms they may be completely fused together. The antennae vary greatly in shape, being usually filiform and sometimes very long, as in the Boring-beetles {Monoham-. FiG. 239. —Coteipa lanigera and its Larva (as) (from Packard). mus, Clytus, Saperda, etc.), though occasionally, as in the Lamellicorn beetles (Melolontha—the June Bugs and CotaJpa, Fig. 239), the terminal joints are flattened and folded together like the leaves of a book. The mouth-parts (Fig. 225) are in all cases adapted for biting, and the legs for locomotion. In the Lady-bugs {Coccinella) the tarsus consists of but four joints, one of which is rudimentary, while in the Weevils (Curculionidss), in which the anterior part of the head is pro-. 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 McMurrich, J. Playfair (James Playfair), 1859-1939. New York, H. Holt and Company
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