. 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. 274 FAMILY VIII.—SILPHIDiE. .J^^^ black elj'tra, which are truncate at tip, and ornamented with con- spicuous reddish-yellow spots. The head is large, suddenly narrowed in front of eyes and also at a little distance behind them. The an- tenna; are spoken of as ten-jointed, but the true second joint appears as a node at the base of the one usually called the second. (Fig. 134.) They are frequently known as ''
. 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. 274 FAMILY VIII.—SILPHIDiE. .J^^^ black elj'tra, which are truncate at tip, and ornamented with con- spicuous reddish-yellow spots. The head is large, suddenly narrowed in front of eyes and also at a little distance behind them. The an- tenna; are spoken of as ten-jointed, but the true second joint appears as a node at the base of the one usually called the second. (Fig. 134.) They are frequently known as '' sexton beetles,'' on account of their habits of burying small mammals and snakes. Six species have been taken in Fig. 134. Necrophorus: 1, antennje: 2. tarsus; 3, head from beneath. (After Westwood.) KEY TO INDIANA SPECIES 0¥ NECEOPHOKUS. a. Hind, and usually the middle, tibiae curved or arcuate. 6. Thorax orbicular, its sides and base with wide, flattened margins, disk finely and sparsely punctulate. c. Disk of thorax red; elytra without erect hairs. 533. AMERICANUS. cc. Disk of thorax black; elytra with erect hairs. 53i. sayi. 66. Thorax transversely cordate, its sides narrowly margined and sin- uate at middle; disk smooth; first joint of antenual club red. 535. MAEQINATUS. aa. Tibise straight, not arcuate. d. Thorax orbicular as in americanus and saui. 536. obbicollis. dd. Thorax transversely oval, very little narrowed behind; sides and base broadly margined. e. Disk of thorax glabrous; antenual club orange, the first joint pic- eous. 587. pustulatus. ee. Disk of thorax densely pubescent; antenual club piceous. 538. TOMENTOSUS. 533 (1695). Necrophoeus ameeican'is Oliv., Ent, II, 1790, 6. Elongate, robust. Black, shining; vertex, disk of ^ thorax, epipleural fold and two large irregular transverse spots on each elytron, orange-red; an- teimse black, the club orange-red. Thorax wider than long, truncate in front; disk with a few scat- tered punctures along tlie m
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbeetles, bookyear1910
