. An illustrated descriptive catalogue of the coleoptera or beetles (exclusive of the Rhynchophora) known to occur in Indiana : with bibliography and descriptions of new species . Beetles. 502 FAMILY XV. CORYLOPIIID.'E. The members of this family have been by most authors consid- ered as belonging to a subdivision of the Coecinellidse, but the form of the mandibles and the structure of the tarsi are sufficient to separate them. Moreover, they differ widely in food-habits. How- ever, they are related closely in structure not only to the Coccinel- lida? but also to the Silphida\ so that thoy are
. An illustrated descriptive catalogue of the coleoptera or beetles (exclusive of the Rhynchophora) known to occur in Indiana : with bibliography and descriptions of new species . Beetles. 502 FAMILY XV. CORYLOPIIID.'E. The members of this family have been by most authors consid- ered as belonging to a subdivision of the Coecinellidse, but the form of the mandibles and the structure of the tarsi are sufficient to separate them. Moreover, they differ widely in food-habits. How- ever, they are related closely in structure not only to the Coccinel- lida? but also to the Silphida\ so that thoy are assigned a place be- tween those two families. The principal literature treating of the family is as follows: LcConte.—"Synopsis of the Corylophi," in Proe. Phil. Acad. Nat. Sci., VI, 1852, 14H45. Casey.—"h'yuopsis of the Corylophidfe," in Journ. N. Y. But. Soc., VIII, 1900, 60-75. About 200 species of the family are known. Casey in his Synopsis lists 54 spe- cies, divided among ten genera, from the United Fig. 180. Antenna: of CoTi/JopAifc (After Casey.) StatCS. Of thcSe eight Spe- cies, belonging to five genera, have been taken in Indiana, while a number of others may occur. KEY TO INDIANA GENERA OF :. Antennae 10- or ; thorax hood-like, completely concealing the head. 6. Body rounded, convex, glabrous; front coxse long and narrow, en- closed within deep cavities; antenna^ 11-jointed, the third joint elongate but shorter than the second. c. Head very deeply inserted within the thorax, the front margin oi' which is evenly rounded and strongly descending; post coxal plates large with rounded outline; labrum rounded and sub- quadrate. I. CORYLOPHODES. Of. Head less concealed by the overhanging margin of the thorax, but not visible from above; pctst coxal plates very short; labrum small, triangular, its apex, acuminate; tarsi short, dilated; hind angles of thorax acute, feebly prolonged. II. Gronevis. bh. Body oblong or oval and
Size: 2746px × 910px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectbeetles, bookyear1910
