178 PROCEEDINGS OF THE NATIONAL MUSEUM vol.85 



Genus LYSTRIDEA Baker ' 



Lystridea Baker, Psyche, vol. 8, p. 261, 189a 



Related to Thatuna^ new genus, but with the head as wide as or 

 wider tlian the pronotum, the clj-peus less swollen, and the posterior 

 margin of the pronotum not incised. Rather large, robust leaf- 

 hoppers. 



Head, including eyes, usually slightly wider than pronotum. 

 Crown nearly flat, broad, and rather short ; surface with numerous 

 irregular striae behind ocelli. Ocelli small. Pronotum short and 

 broad; lateral margins short and carinate; posterior margin very 

 shallowly concave; surface transversely striate on posterior one-half. 

 Males macropterous; wings membranous, venation variable but 

 usually forming three anteapical cells, second cross vein between 

 media and cubitus usually present and joining media at or anterior 

 to base of central anteapical cell ; appendix absent. Females brachyp- 

 terous, fore wnngs subcoriaceous, venation variable and frequently 

 obscure. Pecten of hind basitai*sus consisting of six to eight setae 

 of variable size, the first and last of the series usually spinelike. 

 Sexual dimorphism apparent. 



Ovipositor sheath extending well beyond Lip of pygofer; female 

 pygofer with only a few small setae. Male valve small, usually 

 concealed; male plates long and slender; styles very long, compressed 

 distally; sternal apodemes absent; pygofer with a pair of hooklike 

 processes next anal tube. 



Type of the genus, LystMea coiispersa Baker, 1898, which is a 

 synonym oi Bathysmatophorus uMen Baker, 1898. 



KEY TO THE SPECIES OF LYSTRIDEA 



Distal portion of aedeagus with many stout setae. Species large, uhleri (Baker) 

 Distal portion of aedeagus without setae. Species smaller. Dis- 

 tribution, southern California inula, new species 



LYSTRmEA UHLERI (Baker) 



Plate 6, Figxtre 16 



Bathysmatophorus uhlcrl Baker. Psyche, vol. 8, p. 260, 1898. 

 Lystridea conspersa Baker, Psyche, vol. 8, p. 261, 1898. 



A large species, the males rather elongate, the females robust. 

 Length of female 8-10 mm, of male 7-9 mm. Width of head of 

 female 2.75-3 mm, of male 2.5-2.75 mm. 



3 Following his description of BathysmatophorU'S uhlei'i. Baker, referring to his type 

 specimens, states : "These specimens bore the Mss. name Lystridea conspersa IJhl." This 

 association of tlio name Lystridea conspersa with tlie description of 11. uhleri appears to 

 satisfy the requirements of Article 25 of tlie International Rules of Zoological Nomencla- 

 ture and validates tlio name as a synonym of B. uhleri. The specitic name con.spersa must 

 remain a synonym of uhleri, but the generic name Lystridea is available for the species 

 indicated. 



