LAWSON: KANSAS CICADELLID^. 225 



Hosts: This seems to be a very general feeder. The adults 

 are especially common in Douglas county on Ambrosia trifida. 

 The nymphs have frequently been taken on oak. 



Genus Neoccelidia G. & B. 



The members of this genus are generally short and robust 

 though some are distinctly elongate. The head is narrower 

 than the pronotum and is obtusely conical. The pronotum is 

 very short and broad, the anterior and posterior margins being 

 nearly parallel. The elytra are short and broad, with usually 

 four apical cells, though sometimes there are but three. The 

 valve of the male is very characteristic being very large and 

 produced posteriorly so as to completely cover the rest of the 

 genitalia. 



One of the two species keyed below has been taken in the 

 state. The other one probably occurs here too. 



KEY TO SPECIES. 



A. Color yellowish-green, apex of vertex without black spot. 



tumidifrons. 



A A. Color whitish, apex of vertex with black spot. Candida 



Neoccelidia tumidifrons G. «fe B. 



XeoccLlidia tumidifrons 6. & B., Hemip. Colo., p. 104, 1895. 

 Neoccelidia tvmidifrons O. & B., Proc. la. Acad. Sci., iv, p. 183, 1897. 

 Neoca-lidia tumidifrons Osb., Me. Agr. Exp. Sta., Bui. 238, p. 145, 1915. 

 Neococlidia tumidifrons DeL., Tenn. St. Bd. Ent., Bui. 17, p. 91, 1916. 

 Neococlidia tumidifrons Van D., Cat. Hemip. N. A., p. 690, 1917. 

 Neoccelidia tumidifrons Lathr., S. C. Agr. Exp. Sta., Bui. 199, p. 103, 1919. 



Form: Short and very robust. Length, 4 to 5 mm. Head narrower 

 than the pronotum. Vertex one-half longer at the middle than next the 

 eye, a little broader than long, tumid and obtusely conical. Pronotum 

 shorter than the vertex, over three times as wide as long, lateral margins 

 convex, humeral margins long, anterior and posterior margins about 

 parallel, transversely rugose. Elytra short and broad, barely reaching 

 to tip of abdomen. 



Color: Uniformly yellowish or yellowish-green, the vertex and face 

 sometimes washed with orange. Elytra subhyaline, the nervures in- 

 distinct. 



External genitalia : Female, last ventral segment large, posterior mar- 

 gin slightly sinuate on either side of a small median notch, lateral angles 

 slightly produced and rounded; pygofers large, slightly exceeded by 

 ovipositor and sparsely spined. Male with the large triangular valve 

 characteristic of the genus. 



Distrihutioyi : Specimens of this species have been taken in 

 Cherokee and Douglas counties. 



15 — Sci. Bui. — 3058 



