. 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 WATER SCATEN6EE BEETLES. 255 400 (1585). Hydrophilus ovatus Zieg., Proe. Phil. Acad. Nat. Sci., II, 1844, 45. Less elongate, more convex. Above black with an olive tinge; beneath piceous; antennae and tarsi paler. Abdomen pubescent, the last three seg- ments narrowly smooth at middle, without yellow spots at sides. Pro- sternal prominence, in which front end of sternal spine fits, open in front. Length 3
. 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 WATER SCATEN6EE BEETLES. 255 400 (1585). Hydrophilus ovatus Zieg., Proe. Phil. Acad. Nat. Sci., II, 1844, 45. Less elongate, more convex. Above black with an olive tinge; beneath piceous; antennae and tarsi paler. Abdomen pubescent, the last three seg- ments narrowly smooth at middle, without yellow spots at sides. Pro- sternal prominence, in which front end of sternal spine fits, open in front. Length 31-33 mm. Southern half of State; frequent, traeted by electric light. 491 (1586). HyDBOPHILLTS TKIANGTJLARIS Say, Journ. Phil. Acad. Nat. Sci., Ill, 1823, 201; ibid. II, 128. More elongate, less convex. Above of same hue as ovatus; beneath darker, more shining, the abdominal segments with more or less distinct triangular yellow spots at sides. First segment pu- bescent, the remainder broadly smooth at middle. Prostemal prominence closed in front. Length 34-37 mm. (Fig. 126.) Throughout the State; common. March 19-October 27. Sometimes attracted by thousands to electric lights in Indianapolis and the larger cities. Hibernates as imago. May 25-October 8. Often at-. Fig. 126. b, H. triangularis Say, natural size; /, antenna; g, front tarsus of female; A, same of ^ male, all magnified; i, side view of sternal spine. (After Riley.) VI. Teopisteenus Sol. 1834. (Gr., "keel-f breast") Smooth, shining, oval insects, mostly black above; very coimnon in ponds, lakes and slow-flowing streams. Nine species, including Nos. 1588 to 1595 of the Henshaw "Catalogue," belong to this genus, five of which have been taken in Indiana. KEY TO INDIANA SPECIES OE TEOPISTERNUS. a. Prosternal prominence or groove closed in front; elytra without yellow stripes. 6. Thorax and elytra narrowly margined with yellow. 492. NIMIJATl s. 6B. Thorax and elytra entirely black above. c. Front part
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbeetles, bookyear1910
