. The American entomologist. Entomology. had bred this beetle from a larva found in decay- ing pine -wood, and which resembled in every respect, so far as our description went, the one sent b5^ Mr. Lummis. "We have lately bred to the perfect state three of these Grape-root bor- ing larvsB, and one which was found in an Apple-root, and they all four of them prove to belong to a differ- [Fig. ° ent though a very closely allied spe- cies to the one we suggested by in- ference. The bee- tle we have bred from these larvas is the Broad-neck- ed Pi'ionus {Prio- nits laticolUs, Dru- ry), of
. The American entomologist. Entomology. had bred this beetle from a larva found in decay- ing pine -wood, and which resembled in every respect, so far as our description went, the one sent b5^ Mr. Lummis. "We have lately bred to the perfect state three of these Grape-root bor- ing larvsB, and one which was found in an Apple-root, and they all four of them prove to belong to a differ- [Fig. ° ent though a very closely allied spe- cies to the one we suggested by in- ference. The bee- tle we have bred from these larvas is the Broad-neck- ed Pi'ionus {Prio- nits laticolUs, Dru- ry), of which we herewith present a likeness(Fig. 171.) It is usually of a darker color than Color-Mahogany-broivn, verging ^heCylindricalOr- on black. ., , thosoma, and as may be seen upon comparing the figures, it differs materially from that species b}^ its larger size and broader form. Our figure represents the female, which differs from the male in having shorter and narrower antennse, though her body is usu- ally larger. Tliere is another species, the Tile-horned Pri- onus {Prionus imbricornis, Linn.,) so called from the joints of the male antenme lapping over one another like the tiles or shingles of a roof— which very closely resembles the Broad-necked Prionus, and in Illinois is much commoner. It may be distinguished at once from this last by the antenme of the male being about 19-jointed, and those of the female about IG-jointed;* whereas both sexes of the Broad-necked Piio- nus have 12-jointed antenna. In other respects, these two beetles are almost exactly alike, so that, if the antennas happen to be broken, it is not very easy to tell one from another. So far as we are aware, it is not known upon what kind of tree the Tile-horned Prionus feeds; and from the very great similarity of these two beetles, their larvas will probably resemble each other very closelj'. The Prionus family to which all these in- * Having fxamined nearly 20 males ol' this species, we have found t
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectentomology, bookyear1
