X, D, 6 Funkhouser: Review of the Philippine Membracidse 391 



Genus SIPYLTJS Stal 

 Centrotus Fabr. (in part). 



Sipylus is a genus peculiar in having the body very broadly 

 triangular, the width between the humeral angles being usually 

 as great as the extreme length of the pronotum. The other 

 characters assigned by Stal to the genus may be deduced from 

 his key " to be as follows : Posterior process present ; tibiae 

 simple; sides of breast unarmed; hindwings with three apical 

 areas; posterior process not distant from scutellum; body ob- 

 triangular; suprahumeral horns absent; lateral angles pro- 

 minent; posterior process short and depressed; posterior 

 trochanters armed with spines on internal margin. 



The genus is very distinct in general appearance and not 

 difficult to recognize. Only two species, both from the Philip- 

 pines, have been assigned to the genus. These may be separated 

 as follows : 



Key to the species of Sipylus. 



a\ Veins of tegmina without prominent nodules crassulus. 



a^ Veins of tegmina with prominent nodules nodipennis. 



Sipylus crassTilus Stal. Plate II, fig. 14, 



Centrotus crassulus Stal, Freg. Eug. Resa, Ins. (1859), 285. 

 Sipylus crassulus Stal, Analect. Hem. (1866), 387. Stal, Hem. Phil. 

 (1870), 728. BUCKT., Mon. Memb. (1903), 270. 



If I am determining .S. crassulus correctly, it is somewhat 

 variable in size and coloration, and the sexes differ in the length 

 of the auricular humeral angles and in the appearance of the 

 tegmina. 



The female is ferruginous brown, punctate, and covered with 

 fine, white, silky pubescence; the humeral angles are very long, 

 almost half as long as the distance between their bases; the 

 pronotum is very convex; the posterior process short, robust, 

 and suddenly acute ; the tegmina is smoky, ferruginous, and semi- 

 opaque, and more or less wrinkled and with brown punctate 

 base; the legs and undersurface of body are ferruginous. 



Length, 5 to 6 mm. ; width, 4.5 to 5 mm. 



In the male the color is much darker, almost black anteriorly ; 

 humeral angles shorter ; tegmina almost clear hyaline with black 

 base and white tomentose patch at base of abdomen showing 

 through ; undersurface of body black ; legs dark brown. 



Length, 4 to 5 mm. ; width, 3.5 to 4 mm. 



Philippines (Stal) ; Luzon, Mount Banahao (Baker). 



^Hem. Afr. (1866), 4, 88. 



