REVISION OF COELIDHXAE 31 



Biology. Unknown. 



Remarks. This species is easily distinguishable from other species of Sandersellus 

 by the prominent lateral flanges and two retrorse processes on the shaft of the 

 aedeagus. 



Sandersellus truncatipennis (Linnavuori) comb. n. 



Cixidocoelidia truncatipennis Linnavuori, 1956 : 34. Holotype $, Bolivia (NR, Stockholm). 



This species, which is known only from the holotype 9. has been adequately 

 described by Linnavuori (1956). The general habitus is similar to all known species 

 of Sandersellus. Comparison of the type of truncatipennis from Bolivia with my 

 own material failed to associate the sex, even with the male holotypes of delongi 

 and retrorsus, also from Bolivia. On this basis I am considering truncatipennis 

 a distinct species until such time as additional material from Bolivia is studied. 



Distribution. Colombia (Linnavuori, 1956). 



Specimen examined. 



Cixidocoelidia truncatipennis Linnavuori] holotype $, Bolivia: Bogota (Lindig) 

 (NR, Stockholm). 



Tribe THARRINI trib. n. 



Type-genus: Tharra Kirkaldy. 



Small to medium size, slender, almost asiracine-like lcafhoppers. 



Colour uniform to highly marked, sexual dimorphism evident. 



Head generally elongated; crown with anterior margin almost always produced distally 

 beyond anterior margin of eyes, disk elevated above eyes, sometimes depressed medially, ocelli 

 prominent; eyes elongate-ovoid; pronotum with surface finely knobbed; scutellum large; 

 elytra long, broad apically, appendix well developed, venation usually prominent, outer 

 anteapical cell closed, middle and inner anteapical cells opened basally, five apical cells with 

 sides nearly parallel; clypeus long, broad anteriorly, excised near antennal sockets, tapered 

 apically, surface finely granulose, median longitudinal carina usually absent; clypellus long; 

 setal arrangement on hind femur 2 : 2 : 1. 



Male genitalia symmetrical; pygofer narrowed longitudinally; aedeagus bipendulate; plate 

 segmented, laterally appressed, often elliptical, sometimes subquadrate, profusely setose. 



The distribution of the new tribe is primarily Oceania with southern and western 

 extremities of its range reaching northern Australia and Malaysia, respectively. 

 One species has been recorded from the Ethiopian region but this record is dubious. 

 There are three genera known in the group. 



Key to the genera of THARRINI 



Aedeagus bipendulate, ventral appendage traversed by gonoduct (Text-figs 77, 



86) 2 



Aedeagus unipendulate, traversed by gonoduct (Text-fig. 71) 



NEOTHARRA gen. n. (p. 32) 



