2 SYNOPSIS OF THE GENUS CHLOROTETTIX 



across its whole width, thus recalling Idiocerus; the ocelli are 

 plainly visible from above; the front is wide as in Limotettix, 

 sides of pronotum of moderate length and distinctly carinated; 

 elytra long with the appendix well developed, thin and sub- 

 hyaline in texture with the nervures indistinct. This genus 

 includes insects larger than we find jn other groups here noticed, 

 of a uniform green color of some shade, occasionally tinged with 

 fulvous or marked with black on the tergum." 



But many species which undoubtedly belong in this genus have 

 since been described, so we find about half the species of Chloro- 

 tettix that are now known, possessing a bluntly angled vertex, 

 which is often considerably longer on the middle than next the 

 eyes. Also the size of the species may vary greatly, the smallest 

 known having a length of only 3.5 mm., although the majority of 

 the species are large (6-8 mm.). 



Fitch's two species, C. unicolor and tergatus, were placed by 

 Uhler in Grypotes, an old world genus, the members of which 

 resemble in general appearance species of Chlorotettix. But in 

 describing the Genus Chlorotettix, Van Duzee has mentioned the 

 lack of the incurved clypeus which is characteristic of Grypotes 

 and he places the genus as, "Closely related to and intermediate 

 between," Thamnotettix and Limotettix, the last one mentioned is 

 synonomous with Athysanus Burm. and now known as a subgenus 

 of Euscelis. It seems to be then primarily a new world or North 

 American Genus and perhaps an offshoot from Thamnotettix. 



With few exceptions the species of Chlorotettix have a uniform 

 green color, often fading to dull yellow in preserved material. 

 As a rule the species are easily recognized by this uniform color 

 together with the rounded or bluntly angled vertex. Very few 

 of these bear color markings but when present are in the form of 

 bands or spots on the head, pronotum or scutellum. 



For the separation of species I have attempted to use the most 

 prominent and constant characters. The comparative length of 

 the head and the distinctive genitalia of both sexes offer struc- 

 tural characters easily discernible and very constant. Although 

 color is a variable character, a few bright color markings may 

 help to separate certain species quite readily from those which 

 are only of a uniform green. 



The members of this group are practically all grass feeding 

 insects and consequently are of great economic importance, 



