LUPERUS. 273 



Luperus, 



A, Second and third joints of antennae equal in length; 

 elytra yellow, with black margins. 



Black ; thorax (except all or part of base) and elytra 

 (except suture, side and apical margins) pale yellow ; base 

 of antennae and tibiae yellow-brown. L. 1^ — 1| 1. 

 Rather common. L. circumfusus, Marsh. 



J5. Third joint of antennae much longer than second ; 

 elytra unicolorous. 



a. Thorax black. 



Black, shiny ; base of antennae and legs (except base of 

 femora) reddish-yellow. Disc of thorax impunctate ; elytra 

 very finely, scarcely visibly punctured. L. 2 — 2| 1. Com- 

 mon. L. hetulinus, Fourc. 



h. Thorax reddish-yellow. 



Black, shiny ; thorax, base of antennae and legs (gene- 

 rally except base of femora) reddish-yellow. Thorax im- 

 punctate ; elytra finely punctured. Male with antennae 

 much longer tlian body and eyes very large. L. If — 2 1. 

 Moderately common. L. fiavipes, Lin. 



HALTICinAE. 



A, Body oval or oblong oval. 



a» Posterior tarsi inserted at apex of tibiae. 



I. First joint of posterior tarsi shorter than half the 

 tibia. 



1. Posterior tibiae without tooth on outer-side. 



A A, Thorax with a distinct transverse furrow 

 at base. 



a a. Elytra confusedly punctured or smooth. 



A a. Basal furrow on thorax not bounded 

 at each end by a longitudinal impression. 



Posterior femora long and not much thickened ; tibiae 

 without visible apical spine. Haltica, 111. 



B b. Basal furrow on thorax bounded at 

 each end by a longitudinal impression. 



Posterior femora not much thickened ; joints of an- 



VOL. II, T 



