CICADELLESTAE : PART I. PROCONIINI 45 



callosities. Other external characters as in D. blantoni, new species. 

 Male genitalia as in D. huallagana, new species, but with basiventral 

 aedeagal processes elongate, exceeding apex of shaft, and with a 

 pair of dentiform dorsal processes at base of aedeagus. 



Holoty-pe male, Taracua, Amazonas (RMS), and a pair of specimens, 

 Cuyaba, Mato Grosso, Brazil (IZP). 



This species is related to D. huallagana, new species, and D. albipenne 

 (Fabricius), from both of which it can be distinguished most readily 

 by the structure of the aedeagus (see figs. 10 and 7). 



Diestostemma rizopatroni, new species 



YlGXSKE 13 



Length of male 16 mm.; of female 20 mm. Head with clypeus 

 slighdy depressed medially. Forewings of female with a few super- 

 numerary cross veins in base of corium and in adjacent clavus. Male 

 with pygofer not emarginate basally; style not extending as far pos- 

 teriorly as apex of connective, acute at apex, with an anteapical 

 mesal angle; connective linear, slighdy broadened at base; aedeagus 

 with a pair of elongate ventral processes and an unpaired shorter 

 ventral process all arising at base, shaft without more distal processes, 

 curving smoothly posterodorsally, rounded apically, atrium with 

 a pair of lateral short acute processes. Female abdominal sternum 

 VII with a very narrow apical excision bordered by a pair of lobes 

 which are convergent and contiguous at apex. Other structural 

 characters as in D. blantoni, new species. Color of crown, pronotum, 

 and scutellum sordid yellow; forewings opaque white with a few linear 

 darker markings. 



Holotype male and one female specimen, Chanchamayo, Peru 

 (USNM); and three specimens "Prov. Sara," Bolivia (IZP). 



The species is named in honor of Captain Rizo-Patron, who was 

 most hospitable to the writer during a collecting trip to the Chancha- 

 mayo Valley in 1960. The species is quite distinct from other species 

 of the genus in the aedeagal processes and the fonn of the style. 



Diestostemma thoracis, new species 



Figure 25 



Length of male 14-15 mm.; of female 17.5 mm. Head with median 

 length of crown exceeding transocular width, antennal ledges with 

 fovea not extending full length, face flattened medially. Pronotum 

 without gross elevations from dorsal surface, but with a number of 

 slightly elevated callosities between which the surface is coarsely 



