CICADELLINAE : PART I. PROCONIINI 251 



Pronotum coarsely rugose on posterior half of disc, which is without 

 pubescence, posterior portion of scutellum with transverse striations. 

 Forewing with apical membrane as in M. lineiceps, new species, clavus 

 obscurely punctate. Hindlegs with femoral setal formula 2 : 1 : 1 or 2 : 1 : 0. 

 Male pygofer and plates as in M. consolida Schroder (figs. 239c and d) ; 

 style very short, not extending posteriorly beyond apex of connective; 

 connective broadly T-shaped, with stem carinate; aedeagus with shaft 

 slender and elongate, apparently consisting of two sclerites, with a 

 pair of articulated slender tapering processes arising at base of more 

 apical portion. Other structural characters as in generic description. 



Holotype male, Mato Grosso, Barra de Tapirape, Jan. 1, 1963; and a 

 series of one additional male and four female topotypes, December 1962 

 and January 1963 (CAS); and one male topotype, December (NCS); 

 all collected by B. Malkin. The species is also known from Espirito 

 Santo, Brazil (IZP). 



M. malkini, new species, is closely related to M. vermiculata (Signoret), 

 but differs markedly in the form of the aedeagus, which is unusual in 

 the genus in that the processes appear to articulate with the shaft 

 instead of being more solidly attached. 



52. Genus CUERNA Melichar 



Figure 244 

 Cuerna Melichar, 1925a:363. Type-species: [Cercopis] lateralis Fabricius, pre- 

 occupied, which is a synonym of [Cercopis] costalis Fabricius, 1803, by 

 original designation. 



Length 6.5-10.4 mm. 



Head not strongly produced, with median length of crown varying 

 from six-tenths of to one-third greater than interocular width and 

 from four-tenths to slightly more than half transocular width, anterior 

 margin usually broadly rounded, occasionally obtusely subangulate, 

 without a carina separating crown from face, ocelli located on a line 

 between anterior eye angles, each slightly closer to adjacent eye angle 

 than to median line, without an M -shaped elevation bordering posterior 

 margin, without a median fovea, occasionally with a weak transverse 

 concavity between ocelli; antennal ledges not or only slightly pro- 

 tuberant in dorsal aspect, each with a longitudinal concavity, carinate 

 dorsally in lateral aspect, anterior margin not declivous; clypeus convex 

 medially, texture granulose dorsally, muscle impressions usually distinct, 

 other head characters as in Phera. 



Thorax in lateral aspect with an almost complete oblique dorso- 

 pleural carina which is curved and almost horizontal at its anterior 

 end, proepimeron with length less than width; posterior portion of 



