THE AMBUSH BUGS. 505 



c. Side margins of basal half of pronotum with one acute tooth or 



none; apical angle of fourth connexival obtuse, not, or very 



slightly, prolonged outward beyond tip of fifth. 



d. Notch of side margins of pronotum wide and shallow, much wider 



than deep; side margins of hind lobe of pronotum subtruncate 



with a single tooth on its humeral angle; legs not annulate. 



479. FASCIATA. 

 dd. Notch of side margins of pronotum not wider than deep ; side 

 margins of hind lobe of pronotum obtusely rounded, without 

 tooth at hind angles; middle and hind legs annulate with 

 darker. 480. noualhieri. 



cc. Side margins of basal half of pronotum with two acute teeth; 

 apical angle of fourth connexival acute, distinctly prolonged 

 beyond the tip of fifth. 481. guerini. 



aa. Smaller, length not over 7.5 mm. ; membrane usually whitish- 

 hyaline. 

 e. Head with two prominent subconical tubercles each side of disk; 

 pronotum not constricted or notched on the sides between the 

 two lobes; membrane brown, paler towards apex. 



482. ALBOPICTA. 



ee. Head with but one tubercle each side of disk; pronotum feebly 

 notched on sides. 

 /. Fourth connexival with apex acute, distinctly projecting beyond 

 the fifth; fourth antennal of male nearly one-third longer than 

 second and third united ; sides of pronotum without a notch. 



483. ACUTANGULA. 



//. Fourth connexival with apex obliquely truncate, not projecting 

 beyond the fifth; fourth antennal of male but slightly longer 

 than second and third united ; sides of pronotum with a small 

 notch behind the middle. 484. vicina. 



478 (689b). Phymata wolffii Stal, 1876, 133. 



Elongate-oval, male; broadly oval, female. Color above variable; in 

 male with head, pronotum and scutellum usually in great part or wholly 

 black; in female, dull brownish-yellow; fourth antennal fuscous; elytra, 

 including membrane, usually brown in male, the corium with outer half 

 dull yellow in female; abdomen with a broad black or reddish-brown band 

 crossing the fourth and fifth dorsals; under surface greenish-yellow, the 

 pleura and sides of fourth and fifth ventrals darker; tibiae and tarsi 

 usually green. Head granulated, the disk with two pairs of tubercles. 

 Pronotum with sides reflexed, their margins with an obtuse median notch, 

 the edges of front lobe granulated, of hind one with two very short obtuse 

 teeth, the front one with a short carina extending inward from its base. 

 Scutellum with a granulated longitudinal median carina. Abdomen 

 gradually widened, the fourth and fifth dorsals acute and prolonged, the 

 apex of fourth surpassing that of fifth. Genital plate of male elliptical, 

 convex, its margins fringed with hairs. Other characters as in key. 

 Length, 8 — 10 mm. 



Common throughout southern Indiana; less so in the north- 



