THE CLICK BEETLES. 



727 



Described from New Harmony, Posey County. One dead speci- 

 men taken near there by Wolcott; also taken by Dury near Cin- 

 cinnati. Should occur sparingly throughout the southern third of 

 State. 



XXIII. Monocrepidius Esch. 1829. (Gr., "single + little shoe.") 



Fourth joint of tarsi obliquely prolonged into a membranous 

 lobe; first joint of antennae longer than usual; hind coxal plates 

 suddenly dilated on the inner side with the angles rounded and a 

 tooth at the origin of the thighs. 



KEY TO INDIANA SPECIES OF MONOCREPIDIUS. 



(/. Lobe of fourth tarsal joint very broad. 



1). Size larger, 12 or more mm. ; color uniform brown. 1371. lividus. 

 1)1). Smaller, not over 7.5 mm.; elytra dull reddish-brown with a broad 

 fuscous stripe along the suture. 1372. sutuealis. 



ua. Lobe of fourth tarsal joint narrow. 

 c. Length 5 or more mm. 

 (/. Form elongate, slender; thorax distinctly longer than wide. 



1373. VESPERTINUS. 



dd. Form short, oblong, robust ; thorax about as wide as long. 



1374. AURITUS. 



cc. Length not over 4 mm. ; elytra reddish with narrow black lines. 



1375. BELLTJS. 



1371 (4181). Monocrepidius lividus DeGeer, Mem. 



Hist, des Ins., IV, 1763, 162. 



Elongate, subconvex. Dull brown, densely covered 

 with short, prostrate hair ; antenna? reddish brown ; 

 legs yellow. Thorax one-fourth longer than wide, 

 slightly narrowed in front, sides feebly curved; hind 

 angles prominent, acute, divergent, with a short and 

 rather feeble carina. Elytra gradually tapering from 

 base to apex, striate, the stride with close set, oblong 

 punctures ; intervals flat, finely punctulate. Length 

 14-17 mm. (Fig. 279.) 



Southern two-thirds of State ; frequent prob- 

 ably throughout. May 30- August 11. Beaten 

 from branches of trees and shrubs, especially Rg^ 2 ? 9 ; x 3 - 

 those of walnut and hickory. 



1372 (4183). Monocrepidius suturalis Lee, Trans. Amer. Phil. Soc, X, 



1853, 482. 



Elongate-oblong, subconvex. Above dull reddish-brown, finely and sparse- 

 ly pubescent with grayish hairs ; head, median line on thorax and sutural 

 stripe on elytra, expanding at base and on apical third, sooty brown or 

 fuscous ; beneath fuscous, the presternum and inflexed portion of thorax 

 reddish-yellow ; antennge and legs pale brownish-yellow. Thorax one-half 

 longer than wide, sides broadly rounded, hind angles finely carinate ; sur- 



