CICADELLINAE : PART I. PROCONimi 219 



out preapical lobe ; aedeagus symmetrical, a pair of conspicuous ventral 

 processes arising near base and a pair of longer ventral processes 

 arising near midlength and extending as far as apex of shaft, each of 

 latter with a ventral angulate short projection in basal half; paraphyses 

 absent. Other structural characters as in D. tenebrosa. Female unknow^n. 

 Color of crown and scutellum dull yellow, of pronotum castaneous, 

 face yellow except a dark area at apex of clypellus. 



Holotype male, "Tonantins," Amazonas, Brazil (RMS). 



This species is very closely related to D. boliviana Schmidt, but differs 

 conspicuously in the structure of the aedeagus (see fig. 202). 



Dichrophleps symmetrica, new species 

 Figure 205 



Length of male 16.6 mm.; of female 17.7 mm. Head with median 

 length of crown approximately equal to interocular width and approxi- 

 mately six-tenths transocular width, anterior margin sharply rounded 

 in dorsal aspect, ocelli located on a line between anterior eye angles 

 and each slightly closer to median line than to adjacent eye angle, 

 without an M -shaped elevation bordering posterior margin, median 

 line impressed but not foveate. Thorax with posterior portion of scutel- 

 lum not striate. Forewings suffused with amber except claval apex, 

 apex of brachial cell, apices of inner two anteapical cells and the 

 apical cells, all of which are hyaline; claval vein branched at a point 

 very near its apex. Hindlegs with femoral setal formula 2:1:1. Male 

 pygofer with ventral processes very short, each sharply rounded apically, 

 not extending posteriorly nearly as far as posterior pygofer margin; 

 style with a slight mesal angle at apex; aedeagus symmetrical, with a 

 pair of ventral shaft processes extending beyond apex of shaft; para- 

 physes absent. Other structural characters as in D. tenebrosa, new species 

 (except posterior tarsomeres, which were not observed) . Color of anterior 

 dorsum rich brown, with three median spots, a spot before each ocellus, 

 a spot bordering each inner eye margin on crown, three submarginal 

 spots along anterior margin and three spots across disc of pronotum, 

 a spot in each basal angle, a median basal spot, a pair of spots behind 

 transverse sulcus and the extreme tip of scutellum, yellow; face and 

 venter pale yellow, pleural region deeper yellow, the metepimeron 

 dark-margined posteriorly and dorsally. 



Holotype male, Gorgonas Island, lat. 2°59' N., long. 78°20' W., 

 July 1924 (L. E. Cheesman), and two topotypic females (BM). 



This species is closely related to D. tenebrosa, from which it may 

 readily be distinguished by its symmetrical aedeagus and the distinct 

 markings of the anterior dorsum. 



