CICADELLINAE: PART 2. NEW WORLD CICADELLINI 587 
Male genitalia: Pygofer not strongly produced, posterior margin slightly 
and broadly convex, with numerous macrosetae of uniform size occurring on 
most of surface except a narrow anterior region, pygofer without processes. 
Plates triangular, short, not extending posteriorly nearly as far as pygofer 
apex, with uniseriate macrosetae. Style not extending posteriorly nearly as far 
as connective, preapical lobe distinct, apex truncate. Connective T-shaped 
with stem occurring as separate sclerite and articulating with transverse por- 
tion, extending posterodorsally, not strongly keeled. Aedeagus short, without 
lobate processes on shaft. Paraphyses paired, symmetrical, but not lying in 
symmetrical planes. 
Female abdominal sternum VII with posterior margin produced to sub- 
angulate apex. Genital chamber without: sclerites. Ovipositor with second 
valvula as in Ciminius, (below) except that anteapical dorsal and ventral denti- 
cles are present, its ventral margin convex in the expanded portion. Pygofer 
with numerous macrosetae arranged fairly uniformly over posterior two-thirds 
of surface. 
Specimens belonging to Tylozygus Fieber have been studied from Vermont, 
Quebec and Ontario to Texas and Florida in North America, also in Central 
America, the West Indies, Colombia, Venezuela, Ecuador, Peru, and southern 
Brazil. 7ylozygus appears closely related to Ciminius Metcalf and Bruner from 
which it may be separated readily by the venation of the forewings, and by 
the paired paraphyses in Tylozygus. 
The type specimen(s) of 7. bifidus (Say) was/were presumably destroyed, 
but the species, as interpreted here, is the only one that occurs in Indiana, 
which is the type-locality. The original illustration (1838c: pl. 17) of Tettigonia 
nigrolineata Herrich-Schaeffer appears to be a Tylozygus, but I cannot place it 
specifically from the illustration, which doesn’t agree with the description. 
Almost surely the European locality records for this species are in error. The 
original description merely states that the specimen(s) was sent from Prague. 
I follow Oman (1949a:66) and Metcalf (1965a:448) in placing it as a syn- 
onym of bifidus (Say). I have not seen a specimen which might have been the 
type of nigrolineata. Tettigonia tenella Walker and Jassus leucomelas Walker are 
listed in synonymy under Tylozygus bifidus (Say) as a result of my examina- 
tion of the holotypes of the two Walker nominal species. 
I have not seen a specimen eligible to be a lectotype of Tettigonia fasciata 
Walker. I follow Metcalf and Bruner (1936a) in their interpretation of this 
species. The species was described from ‘United States” which may have 
been in error, or it may have referred to Brazil. The key, below, will serve to 
distinguish fasciata from other species. I list Tettigonia fuscolineella Fowler in 
synonymy as a result of an examination of the lectotype of the latter. I have 
not studied a specimen of Tettigonia fuscolineella var. fronterae Fowler. 
My identification of Tettigonia geometrica Signoret rests on a study of the lec- 
totype. I have also studied the lectotype of Tettigonia psitacella Fowler and the 
holotype of Kolla carabela Metcalf and Bruner. I have not seen type material of 
Tettigonia atrovirens (Lethierry). The synonymy in the list of species (below) is 
based on the original description. 
