SUBFAMILY VIII. — DICYPHIN^E. 907 



coarsely punctate. Scutellum smooth, equilateral, impressed at base, its 

 margins pubescent. Inner margin of embolium with a row of minute 

 punctures. Length, 4.5 — 4.8 mm. (Fig. 187). 



Frequent throughout Indiana, June 22 — Sept. 22. Dunedin, 

 Fla., March 13 — 20. In Indiana it occurs in numbers on jewel- 

 weed or touch-me-not, Impatiens biflora Walt., along the borders 

 of streams and ponds in company with Lygus pabulinus (Linn.) ; 

 also frequently beaten from wild grape. Not before recorded 

 from a definite Florida station, and apparently very scarce in 

 that State, but two having been taken at Dunedin. They were 

 swept from ferns in a moist dense hammock. The known 

 range extends from Quebec and New England west to Iowa 

 and Kansas and southwest to North Carolina, Florida and 

 Texas. Of it Uhler (1884, 287) wrote: "This elegant little 

 insect lives in great numbers upon wild grapevines, but it is 

 often equally common upon red and black oak, particularly in 

 early autumn, where it may be seen searching for small tender 

 insects and larvae." 



The color of vitripennis is exceedingly variable, the pronotum 

 often being wholly pale, or with only a black spot at base ; 

 scutellum at times in part or wholly black ; the dark stripe 

 along the suture red or black, sometimes wholly wanting. The 

 form above described is one extreme. The other is the variety 

 discoidalis Reut. (1909, 61) in which the neck, collar, calli, wide 

 median stripe on pronotum, clavus, commissure, line across tips 

 of coria, veins of membrane and antennae, except basal joint, 

 are dark brown to blackish. All possible variations occur be- 

 tween the two extremes, so that the varietal name is super- 

 fluous. 



II. Dicyphus Fieber, 1858, 327. 



Elongate, slender species having the front of head sub- 

 vertical ; tylus prominent, compressed ; eyes large, separated 

 from pronotum by a space subequal to width of an eye ; vertex 

 convex, not wider than the width of an eye, without basal 

 carina; beak usually reaching or surpassing hind coxa?; anten- 

 nae about half the length of body, the joints variable in length ; 

 pronotum subcampanulate, its disk smooth and with a trans- 

 verse impression both in front of and behind calli, hind mar- 

 gin usually broadly and deeply concave; mesoscutum strongly 

 convex, usually widely exposed ; scutellum relatively small, con- 

 vex, its apical half usually with an obtuse longitudinal carina; 



