. Classification of the Coleoptera of North America [microform]. Beetles; Beetles; Coléoptères; Coléoptères. ELATERinAE, li-a ^T'''^:^''f '.,#â â i: >\< prosternum long, usuiilly lobod in front, prolonged holiind, I'orming an acute moving in the Mesosternum short, excavated in the middle for the recep- tion of the prosternal process; coxal cavities small, usually angulated externally; side pieces largo, epiuieru reaching the coxai. Metasternum usually long, side pieces narrow, cpimera slightly visible. Elytra covering the abdomen (rarely abbreviated in the fem
. Classification of the Coleoptera of North America [microform]. Beetles; Beetles; Coléoptères; Coléoptères. ELATERinAE, li-a ^T'''^:^''f '.,#â â i: >\< prosternum long, usuiilly lobod in front, prolonged holiind, I'orming an acute moving in the Mesosternum short, excavated in the middle for the recep- tion of the prosternal process; coxal cavities small, usually angulated externally; side pieces largo, epiuieru reaching the coxai. Metasternum usually long, side pieces narrow, cpimera slightly visible. Elytra covering the abdomen (rarely abbreviated in the female); epipleura) distinct, extending to the apex; scutel- lum visible. Abdomen with five free ventral segments, fifth rounded at the apex (except in the female of Euthysanius), sixth visible in some of the tribe I'lastoeerini. Anterior coxa3 small, rounded, without trochantins, con- tained entirely in the prosternum, in cavities oj)en behind; middle coxa) small, rounded or angulated externally, with a distinct trochantin* in the second sub-family, but none in the first; posterior coxic transverse, oblique, contiguous, dilated into a plate covering in part or entirely the thighs (except in Cerophytuni). Legs short, sometimes contractile; tibiae usually slender, with the spurs very small, or scarcely visible; tarsi 5-jointed, simple or lobed beneath; claws simple, toothed, or pectinated; onychium none, or very short and bisetose. A very large family, and including the Eucnemidic (regarded by many as a distinct family), very sharply defined by the above cbaracters. A few of the species of the first sub-family, and the majority of those of the third, possess the singular power of springing in the air when placed on the back. Tins is efi'ected by extending the protliorax so as to bring the prosternal spine to the anterior part of the mesosternal cavity, then suddenly relaxing the muscles so that the si)iiie descends violently into the cavity; the force given by this sudden
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Keywords: ., bookauthorlecontejohnljohnlawre, bookcentury1800, bookdecade1860
