. 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. THE GROUND BEETLES. 39 liT). Hind coxoe not separated; labi'um nut forked. c. JViandibles without a bristle-beariiii? puncture on the outer side; size large, IS or more mm. Tribe III. Carabini, p. 44. CO. Mandibles each with a bristlf-bearing puncture on the outer side; smaller, not over 12 mm. â Tribe V. Nebriini, p. 50. (/('. Front coxal cavities closed behind. (/. Prosternum prolonged and dilated, entirel
. 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. THE GROUND BEETLES. 39 liT). Hind coxoe not separated; labi'um nut forked. c. JViandibles without a bristle-beariiii? puncture on the outer side; size large, IS or more mm. Tribe III. Carabini, p. 44. CO. Mandibles each with a bristlf-bearing puncture on the outer side; smaller, not over 12 mm. â Tribe V. Nebriini, p. 50. (/('. Front coxal cavities closed behind. (/. Prosternum prolonged and dilated, entirely concealing the meso- sternuni; scutellum invisible. Tribe I. Omopheonini, p. ".'.i. dd. Prosternum not concealing the mesostenuun. e. Antennse free at base; body not pedunculate, the bases of thorax and elytra in contact; scutellum visible. Tribe IV. Blaphrini, p. 48. ee. Antennae arising under a frontal plate; body pedunculate, the bases of thorax and elytra remote; scutellum not visible; hind coxaj contiguous. Tribe VI. Scaritini, p. 53. Tribe I. OMOPHRONINI. AntenDEB slender, inserted under a slight frontal margin, four basal joints glabrous; mandibles with a bristle-bearing puncture on outer side; second joint of labial palpi with several sette or bristle- like hairs; body not pedunculate; mesosternum covered by the prolonged prosternum. The tribe is represented by the single genus: I. Omophron Latr. 1802 (Gr., ";) Form oval, convex; scutellum invisible. The species occupy holes in wet sand along the margins of streams, ponds and lakes. They are also often found under stones or in holes between the roots of plants along the water's edge, and are frequently caught in minnow seines. By throvdng water over the sand banks they can be forced out and are then easily captured, as they do not fly. For detailed papers on the genus .see: Horn.â"Synopsis of O ra 0 phron," in Trans, Amer. Ent. Soc, III, 1870,71. Fig. 27. Omophron labiatum Fnii.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbeetles, bookyear1910
