. Classification of the Coleoptera of North America [microform]. Beetles; Beetles; Coléoptères; Coléoptères. SCARABiEIDAE. 125 CAsTnox. EpipleursB distinct, narrow ; scutoUum none. EiMpleiiiu' of the elytra wide ; anterior tarsi wanting. Group II. DELTOnilLA. Anterior tibiae not prolonged at the extremity. l) Sub-Tribe 2.âCoprini (genuini). The gradually thickened middle and hind tibisc unfit these in- sects for transporting the balls of material whith sitvc for the food of the larva); though some of the species do construct balls, they bnry them in the place where they are f
. Classification of the Coleoptera of North America [microform]. Beetles; Beetles; Coléoptères; Coléoptères. SCARABiEIDAE. 125 CAsTnox. EpipleursB distinct, narrow ; scutoUum none. EiMpleiiiu' of the elytra wide ; anterior tarsi wanting. Group II. DELTOnilLA. Anterior tibiae not prolonged at the extremity. l) Sub-Tribe 2.âCoprini (genuini). The gradually thickened middle and hind tibisc unfit these in- sects for transporting the balls of material whith sitvc for the food of the larva); though some of the species do construct balls, they bnry them in the place where they are formed. The sexual differences are frequently strongly marked, the male having horns on the head or thorax. The epipleura} are always narrow, and the first joint of the tarsi is elongated. Tlie anterior tarsi are wanting in some species of Phaua^us, and the claws arc all want- ing in the same genus. The following groups are represented in our fauna:â Third joint of labial palpi distinct; Anterior cos;e very transverse, not prominent. Scatonomi. Anterior coxoe short, prominent; Labiiil palpi dilated. Copkes. Labial palpi subfiliform. Oxni:s. Third joint of labial palpi obsolete. Group I.âScatonomi. Our only representative of this group is ChcericUum capMra- tum, a moderately small, convex, shining, bronzed black insect, resembling a Ilisteride, with finely striate elytra, found in dung. The 3-joiuted labial palpi, and the transverse, not prominent, anterior coxa;, readily distinguish it from the other groups. The claws are small, without onychium, but the tip of the last joint of the tarsi is prolonged beneath into an obtuse process one-half as long as the claws. Group II.âCopres. The labial palpi are 3-jointod, broad, and compressed; the anterior coxa; are conical, large, and prominent. The last joint of the tarsi has no onychium, and in one genus the claws are wanting; in Copris the claws are small, and the inferior portion of the joint is prolonged in
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