THE LAME LElCORN BEETLES. 



929 



/. Elytra not pubescent ; clypeus without a transverse ridge. 

 k. Mesosternum distinctly carinate between the coxa.'; front 

 tibiae punctate on front face; first tarsal joint longer than 

 second. 



I. Uniform reddish- or pale chestnut-brown ; first joint of 



hind tarsus not as long as the next three. 



1757. RUBEOIiUS. 



II. Dull brownish-yellow, head and thorax darker, elytra 



often clouded ; first joint of hind tarsus longer than the 

 next three. 1758. stekcorosus. 



kk. Mesosternum not carinate ; basal marginal line rarely ab- 

 sent ; front tibiae smooth in front, 

 m. Color reddish-brown or dull brownish-yellow, never in any 

 part black. 



n. Thorax not fringed with long hairs; color dull yellow, 

 thorax and suture darker ; larger, 4.5-5 mm. 



CONSENTANEUS. 



nn. Thorax fringed with conspicuous hairs ; color pale, dull 

 yellow, elytra with an oblique fuscous bar on basal 

 half ; smaller, not over 3.5 mm. 1759. wolcotti. 



mm. Color in great part piceous ; head and thorax always black 

 or piceous. 



o. Clypeus angulate each side of middle notch. 

 p. Elytra entirely piceous or often with the alternate in- 

 tervals marked with small reddish spots ; body be- 

 neath and legs pale yellow. 1760. bicolor. 

 pp. Elytra dull yellow, with black spots; sides of thorax 

 paler. 1761. serval. 

 oo. Clypeus very obtusely rounded each side of middle 

 notch. 



q. Elytra dull yellow, with black spots; thorax with 

 front angles paler. 1762. inquinatus. 



qq. Elytra black, apex dull red ; thorax entirely black ; 

 elytral intervals very flat. 1763. terminalis. 



/. Elytra more or less pubescent, fuscous, the sides paler. 

 >\ Sides of thorax not fringed; teeth of front tibiae normal; 

 punctures of elytral striae very distinct. 



1764. FEM ORALIS. 



rr. Sides of thorax with a fringe of rather long hairs ; front 

 tibke with upper tooth small or wanting; punctures of 

 elytral striae indistinct. 1765. walshii. 



Thorax narrower at base than apex, distinctly sinuate at sides 

 near hind angles ; color black or piceous. 



Elytra oblong with a small tooth on each humerus ; length 7- 

 9 mm. 1766. oblongus. 



?. Elytra oval without a tooth on humerus; length 3.5 mm. 



HUMERALIS. 



