No. 34-] HEMIPTERA OF CONNECTICUT: CICADELLIDAE. 95 



Scaphoideus Uhler. 



Vertex flat, angularly produced, almost as long as basal width. 

 Elytra rather long, covering abdomen. Costa often with recurved 

 veins. 



Key to Species. 



1. Elytra usually mottled with irregular patterns, not with cruciate 



brown mark, nervures dark 2 



Milky white in color, elytra with a brown cruciate mark, darker 

 margined, crossing elytra cruciatus 



2. Vertex unicolorous or marked with brownish, but not with broad 



transverse fuscous band between eyes 3 



Vertex marked with a distinct transverse rather broad red or 

 fuscous band between eyes. (Fig 9, ii.) 8 



3. Vertex with faint or definite brown markings, or blotched with 



fuscous next eyes 4 



Vertex uniform brown, without dark lines or stripes .unicolor 



4. Vertex not blotched with fuscous next eyes, pale or with dark 



markings 5 



Vertex orange or blotched with fuscous next either eye, but without 

 a band, elytra orange with white spots jucundus 



5. Vertex with brown lines forming a V-shaped mark back of apex 



and a pale band across base 6 



Vertex whitish without markings, or with faint indication of a 

 transverse brown line between eyes 7 



6. Size larger, 6 mm., vertex brownish, V-shaped mark at apex not 



touching a heavy brown mark at its base, and not enclosing a 

 white spot. Elytra with commissural lobate areas rather obscure 



censors 

 Size smaller, 5.5 mm., vertex much paler, V-shaped mark contin- 

 gent at base with a heavy transverse bar, enclosing a white tri- 

 angular spot. Elytra with nervures dark and commissural lobate 

 areas conspicuous scalaris 



7. Vertex, pronotum and scutellum whitish, vertex often with a faint 



transverse band, pronotum and scutellum usually with very few 



and faint markings intricatus 



Vertex yellowish with wavy transverse lines, pronotum distinctly 

 marked with brown blotches, elytra very dark but with scutellar 

 margin and two distinct spots along claval suture milky white lobatus 



8. Band between eyes without large toothed portion extending forward 9 

 Transverse band between eyes with a rather large central toothed 



portion extending forward II 



9. Transverse band duller in color not margined with black 10 



Transverse band bright orange-red, margined before with a black 



line at central portion. (Fig. 9, iia.) auronitens 



10. Elytra uniform dark brown on posterior two-thirds, veins obscure, 



pale areas wanting, female segment distinctly and rather deeply, 



broadly notched luteolus 



Elytra grayish, pale with brown nervures and with dark brown and 

 milky white areas. Female segment produced, not notched at 

 center opalinus 



11. Darker, usually brownish or grayish, band on vertex darker, brown- 



ish, transverse behind, with a toothed projection added on anterior 



side 12 



Light ochraceous, band on vertex rather broad, orange, waved by 

 median anterior projecting tooth, not transverse behind ...ochraceus 



12. Fernale segment often produced, but not toothed at center, vertex 



with transverse band dull reddish 13 



