20 John Todd Zimmer 



Apateticus (Podisus) placidus (Uhler). 



1870. Podisus placidus Uhler, Am. Eiitom.. II, p. 203, fig. 124. 



A male and two females of this species collected in Sionx 

 county are before me. An additional male and two females 

 without locality labels are also at hand and may be from this 

 state. As the species is present in Iowa and Michigan it may 

 eventually be found in eastern Nebraska but as yet no specimens 

 have been recorded from that section of the state. 



Subfamily GRAPHOSOMINAE 



Tribe PODOPINI 



Genus Amaurochrous Stal 



KEY TO THE SPECIES 



I. Size averaging larger (length, 6.5-7 rnm) ; humeral tooth large, obtuse, 

 its anterior edge arcuate; juga less explanate and less concave 

 dorsally ; tylus somewhat more elevated apically cinctipes 



I. Size averaging smaller (length, 5.5 mm) ; humeral tooth short, acute, 

 its anterior edge rectilinear, continuous with the latero-anterior 

 margins of the pronotum; juga more explanate and more con- 

 cave dorsally; tylus less elevated with the juga more nearly 

 contiguous over its depressed tip parvulus 



Amaurochrous cinctipes (Say). 



1828. Tctyra cinctipes Say, Am. Ent.. Ill, pi. 43. 

 1839. Podops dubius Germar (not Palisot de Beauvois), Zeitschr., 

 I, p. 64. 



A male and female taken by the author at Lincoln in March 

 and June and a female taken by L. Bruner at West Point in 

 June represent the only material in this species at hand from 

 Nebraska. Uhler records it, however, from this state in 1876 

 {Bidl. U. S. Gcol. Geog. Surv. Terr., No. 5, ser. 2, p. 8). 

 Amaurochrous parvulus (VanDuzee). 



1904. Podops parvulus VanDuzee, Trans. Ant. Ent. Soc, XXX, p. 22. 



Represented in the collection by two males and three females 

 from West Point, Cedar Bluffs and Holt county. 



The difference in the shape of the humeral tooth in this species 



238 



