No. 34-] HEMIPTERA OF CONNECTICUT I CICADELLIDAE. Ill 



concavely narrowed and produced to gradually tapering acutely 

 angled apices. 



This species has a rather wide distribution in the eastern United 

 States. It occurs in abundance on Andropogan virginicus in 

 upland and prairie areas. The record for Connecticut is a good 

 one. 



Madison, 24 Sept., 1922 (B. H. W.). 

 D. apicatus Osborn. 



Can. Ent, xxxii, 285, 1900. 



Small, robust, vertex almost as long as width between eyes, 

 yellowish, unmarked. Pronotum yellowish anteriorly, shading to 

 brown posteriorly. Scutellum brown. El}'1;ra exceeding abdo- 

 men, chestnut brown, tips whitish hyaline, venation pale. Female 

 segment concavely excavated, covered at the middle with a mem- 

 brane which is convexly produced and has a brown spot either side 

 of central tip so as to appear as having three points. Length 3 mm. 



Occurs on Panicum during July and August. A common form 

 in wet pastures and on margins of lagoons or other bodies of 

 water. It has also been taken in rather dry habitats in large 

 numbers. 



New Haven, 4, 5, 16 July, 1920, 16 July. 1921, 2 July, 1922 (B. H. W.) ; 

 Stratford, 9 July, 1920 (B. H. W.) ; Madison, 24 Sept., 1922 (B. H. W.). 



D. inimicus (Say). Jassus inimicus Say. Jassus sex-punctata 

 Provancher. 



Jour. Acad. Nat. Sci. Phila., vi, 305, 183 1. 



Vertex considerably broader than median length, bluntly angled. 

 Varying greatly in intensity of coloration but always with six black 

 spots in two longitudinal rows. Two spots on margin of vertex, 

 two on anterior margin of pronotum and two in basal angles of 

 scutellum. Elytra long, the cells usually heavily marked with 

 fuscous. Outer clavus heavily reticulated. Female segment 

 excavated either side of a rather broad median tooth. Length 

 4.5 mm. 



One of the few species of greatest economic importance, and 

 having a great variety of food plants. It is a common grass 

 feeder, but is also important in its relation to garden, cereal and 

 forage crops as well as a pest of pasture and meadow. 



New Haven, 3 Oct., 1902 (B. H. W.) ; 16 Oct., 4 Nov., 1903 (H. L. V.) ; 

 27 June, 1907 (W. E. B.) ; 26 June, 1912, 8 July, 1912 (at light) ; 4, 5, 11, 

 17, 18, 23, 27, 31 July, 8, Aug., 22 Sept., 1920 (B. H. W.) ; Kent, 31 Aug., 

 1904 (W. E. B.) ; Wethersfield, 24 June, 1913 (L. B. R.) ; Hamden, 20 

 June, 1920 (B. H. W.) ; Stratford, 9 Julv, 1920 (B. H. W.) ; Waterbury, 

 15 Oct., 1920 (B. H. W.) ; Meriden, 28 July, 1909 (A. I. B.) ; North Haven, 

 24 Sept., 1921 (B. H. W.) ; Marlborough, 15 July, 1922 (B. H. W.). 



D. flavicosta Stal. D. flavocostatus Van Duzee. D. retrorsiis 

 Uhler. 

 Rio. Jan. Hemip., ii, 53, 1862. 

 Vertex broader than long, very bluntly angled, almost rounded 



