ART. 18 JASSID GENUS TYPHLOCYBA McATEE 1 1 



— Side of ninth segment produced and decidedly narrowed, with a tooth at 

 both the upper and the lower posterior angles (fig. 73) ; aedeagus "two- 

 storied"' (fis;. 74) modesta Gilisfni. p. 33 



29. (Three alternatives) : 



Aedeagus as in figures 31 and 33 rosae Linnaeus, p. 13 



Aedeagus as in figure 34 Xanthippe, new species, p. 14 



Aedeagus as in figure 37 lethierryi Edwards, p. 15 



TYPHLOCYBA PERSEPHONE, new species 



Male. — Pale yellowish above and below, the tint on tegmina to 

 crossveins being near to light cadmium yellow, apical cells faintly 

 fiimose. Hypopygium: Ninth segment with the upper posterior 

 angle rounded, the lower slightly produced into a moderatelj' de- 

 veloped tooth which is heavily pigmented apically. Outer clasper 

 narrowed at about middle then slightly broadened, narrowed again 

 for the posterior fourth which is rounded, slightly spatulate, and 

 heavily pigmented apically. Inner clasper narrowed from base, 

 simply curved, until beginning of the distal fourth which is more 

 abruptly curved outwardly, and aciculate apically, Aedeagus about 

 twice as long as connective, consisting (apart from the attachments 

 for muscles at base) of a simple shaft upwardly curved to middle, 

 then slightly decurved, the apex again slightly upcurved, channeled 

 along upper side and somewhat bilobate at apex (fig. 23). 



Female. — Paler than male, stramineous, more or less tinged with 

 yellow ; eighth sternite evenly convex posteriorly. 



Length, 3.5 mm. 



Holotype^ aUotyye., and faratupes. — Of both sexes, Ames, Iowa, 

 June 20, 1897, E. D. Ball (Ball)! 



TYPHLOCYBA COMMISSURALIS Stal 



TyphlociiJja commissnralis Stal, C, Beitrag zur Hemipteren-Fauna Siber- 

 iens und des Russischen Nord-Amerika, Ent. Zeit. (Stettin), vol. 

 19, 1859, p. 196 [Sitka, Alaska]. 



Male. — For color characters see key to color varieties and descrip- 

 tions below. Hypopygium (fig. 25) : Upper angle of 9th segment 

 well rounded off, lower rather prominent, with a slight angulation 

 on inner side; a patch of bristles near articulation of outer clasper, 

 and some finer hairs on posterior margin below anal tube; outer 

 claspers narrowed gradually from base, apex rounded; inner clasper 

 strongly upcurved apically, ending in a long, sharp thorn which 

 projects laterally at right angles to the general vertical plane of the 

 clas[)er (fig. 27) ; aedeagus twice as long as connective, provided 

 apically with two pairs of slender, freely movable, lanceolate ap- 

 pendages of which the posterior (outer) pair are tlio longer (figs. 

 26, 28). 



