174 Psyche [October 



3. Genus Chlorochroa Stal. 



Pentatoma Auct. in part. 



Rhytidolomia Kirk, in part. 



Color green, margins of body and tip of scutellum reddish yellow; length 12-14 mm. 



uhleri Stal or persimilis Horv.i 



4. Genus Rhytidolomia Stal 



Penfatoma Auct. in part. 



Larger, length 16 mm.; lateral margins of pronotum narrowly reflexed (fig. C) color 



dark olive brown, the margins paler senilis Say. 



Smaller, length 9.5-11 mm., pronotal margins not reflexed; color dark olive, with 



median and lateral pale stripes saucia Say. 



5. Genus Mormidea Amyot et Serville. 

 Color dark brown, pronotum with two transverse pale stripes, lateral margins of 

 scutellum and edges of connexivum pale; length 6 mm lugens Fab. 



6. Genus Solubea Bergroth. 



Ochahis Stal. 



Color light brown, scutellum and markings of head paler; length 8-10 mm. 



pugnax Fab. 



7. Genus Euschistus Dallas. 



1. Pronotum with a distinct more or less impunctate raised line running trans- 



versely between the lateral angles ; pronotum distinctly wider than the abdo- 

 men; juga generally somewhat longer than the tylus; color variable, generally 

 some shade of brown throughout the genus; length about 11 mm. 



ictericus Linn. 

 Pronotum without such a line, proportionately narrower 2 



2. Juga distinctly longer than the tylus, apex of head thus emarginate; hemielytra 



covering the connexivum; length 12-15 mm. 



fissilis Uhl. or euschistoides Voll. 



Juga not or very slightly longer than the tylus, apex of head thus rounded or 



truncate 3 



3. Lateral angles of the ventral abdominal segments concolorous; genital plate of 



the male with a dark spot (fig. 7); form somewhat narrowed posteriorly; 



length about 13 mm variolarius Pal. Beauv. 



Lateral angles of the ventral segments with a black dot; hemiel;ytra generally 

 not covering the connexivum 4 



4. Smaller, length 8-9 mm., form rather flattened; lateral margins of pronotum 



pale and somewhat swollen, the closely set marginal punctures forming a 



distinct black band politus Uhl. 



Larger, length 10 mm. or more; form more convex 5 



5. Larger, length 12-15 mm; abdomen without a median ventral row of black spots 



servus Say. 



Smaller, length 10-12 mm.; abdomen usually with a median ventral row of black 



spots more or less developed tristigmus Say. 



1 These forms are considered identical by Van Duzee. 



