CICADELLESTAE : PART I. PROCONIINI 255 



nective, without preapical lobe, apex acute. Connective Y-shaped, 

 arms not widely divergent, stem keeled. Aedeagus very short, U-shaped 

 in lateral aspect, with pair of long slender tapering basidorsal processes 

 extending posteriorly much beyond apex of shaft, closely associated 

 basally with base of anal tube. Paraphyses absent (note aedeagal 

 processes) . 



Female abdominal sternum VII with posterior margin deeply and 

 regularly concave. 



Anacuerna is known only from the type-species, which occurs in Peru 

 and Bolivia. The present interpretation of A. centrolinea (Melichar) is 

 based on an examination of a paralectotype in the Moravske Museum, 

 Brno. The genus appears to be closely related to Cuerna from which it 

 differs markedly in the form of the aedeagus, which is without ventral 

 processes, and in the partly fused male plates, which are completely 

 separate in Cuerna. Externally, the proepisternum of Anacuerna is not 

 keeled on its ventral margin, as it is in Cuerna. 



The processes associated with the aedeagal base might equally as 

 well be designated anal processes or paraphyses in Anacuerna. They are 

 treated here as aedeagal processes because of the apparent relationship 

 of this genus to Cuerna, where there are four aedeagal processes and 

 no paraphyses or anal processes. 



54. XyECHACOl^k, new genus 



Figure 246 



Type-species: Tettigonia missionurn Berg (1879d:248). 



Length 6.5-8.5 mm. 



Head not strongly produced, its median length less than half inter- 

 ocular width and from one-fourth to one-third transocular width, 

 anterior margin broadly rounded, not carinate at transition from crown 

 to face, ocelli located slightly behind a line between anterior eye angles, 

 each slightly closer to adjacent eye angle than to median line, with a 

 transverse elevation bordering posterior margin, with transverse fovea 

 between ocelli, without a longitudinal carina laterad of each ocellus, 

 disc with sparse pubescence, lateral clypeal sutures extending onto 

 crown and attaining ocelli; antennal ledges not protuberant in dorsal 

 aspect, in lateral aspect each with a very slight anterior concavity, 

 not carinate dorsally, anterior margin oblique; clypeus convex, muscle 

 impressions distinct; transclypeal suture incomplete; face finely pubes- 

 cent below; clypellus not protuberant, its contour continuing profile 

 of clypeus. 



Thorax with pronotal width less than transocular width of head, 

 lateral margins parallel, with a deep transverse sulcus behind anterior 



