REVISION OF TRIBE ERRHOMENELLINI OMAX 179 



General color brown mottled with fuscous; females often pale 

 sordid yellow to gray with fuscous marks, and sometimes with large, 

 irregular white marks basally and apically on fore wing. 



Crown of female produced medially, about one-half longer medially 

 than next the eye; crown of male shorter, al)0ut one-third longer 

 medially than next the eye. Pronotum of female very short, about 

 equal to crown in length ; that of male proportionately much longer, 

 at least one and one-half times as long as crown. Fore wing of 

 female reaching to about the middle of tlie eighth tergite; anteapical 

 cells usually present but much shortened; apical cells very short. 

 Fore wing of male extending well beyond tip of abdomen. 



Posterior margin of seventh sternite of female with a V-shaped 

 notch medially extending over halfway to base of segment; margin 

 between notch and lateral angles slightly sinuated. Male plates 

 curved slightly upward posteriorly, together elongate triangular; 

 lateral margins curved upward; surface set with numerous fine 

 setae. 



Processes on male pygofer heavily sclerotized, extendin.g caudad 

 but tips pointed and curved mesad. Aedeagus stout, curved upward 

 posteriorly, distal portion with many stout setae laterally, these di- 

 rected back along the shaft of the aedeagus. Inner surface of style 

 concave distally; dorsal terminal projection bent mesad and forming 

 a distinct hook; shaft with a toothlike projection on lower outer 

 surface near apex. 



Distribution. — The distribution of uhleri appears to be primarily 

 northern California and Oregon, but there are also specimens at 

 hand from as far south in California as Los Angeles and from 

 Nevada (without specific locality). 



Remarks. — Baker's type series of uhleri contained specimens of 

 two species, but the name uhleri. is here restricted to the species rep- 

 resented by Baker's single female cotype from Dunsmuir, Calif. 

 (Wickham), which bears his red determination label and is considered 

 to be the type specimen. 



LYSTRIDEA NUDA, new species 



Plate 6. Figijees 1", loA 



Closely related to, and previously confused with, Lystridea uhleri, 

 but smaller and the males with shorter wings. Length of female 

 6.75-8.25 mm, of male 5.5-6.5 mm. Width of head of female 2.5-2.75 

 mm, of male 2.25-2.5 mm. 



Color as in uhleri but with males slightly darker and with larger 

 fuscous marks on head and thorax. 



51704—38 2 



