SUBFAMILY I. — PENTATOMIN.-E. 



123 



canal, and surrounded by an elevated rugose opaque area at the 

 base of the supporting plate. 



About 40 species are known from North and Tropical Ameri- 

 ca, only six of which are recorded from the United States. Of 

 these three occur in our territory. 



KEY TO EASTERN" SPECIES OF MORMIDEA. 



o. Humeral angles of pronotum obtusely rounded; under surface in 

 great part or wholly piceous. 

 b. Pronotum with all its margins narrowly edged with white, its front 

 portion with a median, often interrupted, transverse white cal- 

 loused line, its front angles without a tooth. 79. lugens. 

 bb. Pronotum with only the front side margins edged with white, its 

 front portion with two small rounded calloused spots, and front 

 angles with a small outward projecting nodule or blunt tooth. 



80. PICTIVENTRIS. 



aa. Humeral angles of pronotum subtruncate, feebly notched; under 

 surface in great part dull yellow; basal angles of scutellum each 

 usually with a large ivory-white calloused spot. 81. guerini. 



79 (111). Mormidea lugens (Fabricius) , 1775, 716. 



Oval, subdepressed above, more convex beneath. Above dull grayish- 

 yellow; head, apical third of pronotum and entire scutellum black, faintly 

 bronzed; antenna? with joints 1 — 3 mostly pale, 4 and 5 fuscous except 

 at base; scutellum surrounded except at base with a calloused white line, 

 this edged without from base to beyond middle by a row of coarse black 



punctures; membrane dull brown; tergum and 

 connexivum black, the latter narrowly edged 

 with white; under surface piceous-black, shin- 

 ing, faintly bronzed; legs yellow, flecked with 

 brownish dots; margins of abdomen with a 

 calloused white line. Head moderately de- 

 clivent, coarsely, deeply, densely punctate; sec- 

 ond joint of antenna? scarcely half the length 

 kof third. Pronotum more sparsely punctate 

 than head, front portion with an oblong smooth 

 space before each end of the transverse white 

 line, hind portion with numerous fine trans- 

 verse wrinkles separating the rows of punc- 

 tures. Scutellum coarsely and deeply punctate 

 at base, the punctures finer and more sparse 

 towards apex. Thoracic pleura coarsely and 

 densely punctate, the abdomen more sparsely and finely so. Genital plate 

 of male deeply and rather acutely notched, its hind margin deflexed. 

 Length, 6 — 7 mm.; width, 3 — 4 mm. (Fig. 25). 



Common throughout both Indiana and Florida. Hibernates 

 beneath logs and other cover as imago and therefore to be 



25, X 



C*5 



( Original). 



