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THE UNIVERSITY SCIENCE BULLETIN. 



Distribution: Our commonest member of the genus, well 

 distributed over the state as shown by the following map : 



Hosts: Van Duzee reports it on witch hazel. Professor 

 Osborn gives willow as a host. This is its food in Kansas. It 

 is frequently taken at lights. 



Scaphoideus melanotus Osb. 



Scaphoideus 

 Scaphoideus 



lelanotit 



Scaphoideus mflanotu 

 Scaphoideus melanotu 

 Scaphoideus melanotu 



Osb., Jl. Cine. Soc. Nat. Hist., xix, p. 206, 1900. 

 Wirtn., Ann. Cam. Mus., iii, p. 224, 1904. 

 Osb., Ohio Nat., xi, p. 259, 1910. 

 DeL., Tenn. St. Bd. Ent., Bui. 17, p. 59, 1916. 

 Van D., Cat. Hemip. N. A., p. 633, 1917. 



Form: Length, 5 to 5.25 mm. Vertex about as long as basal width, 

 flat or slightly concave, apex obtuse. Pronotum over twice as broad as 

 long, anterior margin strongly convex, posterior slightly concave, lateral 

 margins short. Elytra with postnodal cell much widened distally, a dis- 

 tinct cross vein between clavals and the outer claval approximating 

 claval suture posteriorly. 



Color: Vertex white, with narrow brown marginal band, heavier 

 brown transverse band which is produced medially, and a black border on 

 posterior margin medially. Face black. Pronotum white with light 

 brown anterior band and broken posterior band, with large dark brown 

 spots laterally. Scutellum white with three large light brown basal spots 

 and two small black preapical ones. Elytra brown with three large 

 white spots along suture and others irregularly placed. 



External genitalia: Female, last ventral segment over twice as long 

 as preceding, posterior portion black, posterior margin produced, with 

 narrow but distinct median notch; pygofers widest at the middle, much 

 exceeded by ovipositor, sparsely bristled except for two preapical tufts. 

 Male, valve barely visible from under broad and long last ventral seg- 

 ment; plates a little over half as long as pygofers, scarcely tapering to 



