268 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 115 



Aedeagus slender in lateral view with dorsal hump on basal half and 

 with apical mesal extension slender and recurved (fig. 47). 



HoLOTYPE. — Male, Riberalta, Bolivia, W. M. Mann, January, 

 1921-22, Mulford Biological Expedition. USNM type 65826. 

 Female unknown. 



Xiqilliba, new genus 



Figure 55-60 



Type of genus Xiqilliba hellator, new species. 



Description. — With distinct carina separating face and crown. 

 Crown in dorsal view wider than long and bluntly angular apically. 

 Ocelli near anterior margin of crown but sHghtly posterior to carina. 

 Head including eyes narrower than pronotum. Posterior margin of 

 pronotum mesally indented. Antennae as long as body including 

 forewings. Venation of forewings comparatively distinct. 



Ground color yellow marked with brown or black on head, 

 pronotum, and forewings. 



Male genitalia. — Valve lacking. Male plates fused basally for 

 about half length. Pygofer simple. Anal tube with long paired proc- 

 esses extending anteriorly into genital chamber. Styles very long, 

 wrinkled, slender, and poorly sclerotized. Connective modified 

 Y-shaped. Aedeagus slender and simple. 



Xiqilliba bellator, new species 



Figures 55-60 



Length. — Male 6.5 mm. 



Coloration. — Grossly appearing as yellow leafhopper with brown 

 stripe extending from anterior margin of crown across pronotum and 

 scutellum on to forewings, where abruptly widens near midpoint of 

 each clavus extending laterally to costal margin of each forewing, 

 thus covering entire distal portion of forewings. 



Ground color yellow. Black spot at apex of crown below carina. 

 Crown mesally brown but color vaguely delimited. Pronotum mesally 

 brown with color widest posteriorly. Scutellum with four very dark 

 stripes: two wide lateral and two narrow double-toothed central 

 stripes. Forewings brown except for large yellow patches in anterior 

 costal area. 



Male genitalia. — As defined generically with additional charac- 

 ters as follows : long paired processes of anal tube moderately slender 

 but irregular in lateral view (fig. 55), sharply pointed and partially 

 crossed anteriorly and double-pronged basally where joining anal tube 

 in ventral view (fig. 56). Partiallj^ crossed anterior portions of 

 processes form base on which aedeagus rests. Aedeagus uniformly 

 slender, upturned distally, with apex projecting shghtly caudally (fig. 58) . 



