A SYNOPSIS OF THE GENUS CHLOROTETTIX.* 



By DWIGHT M. BELONG, M. Sc., 

 Instructor in Zoology and Entomology, Ohio State University. 



(Including the descriptions of four new species by Herbert Osborn.) 



The Genus Chlorotettix is primarily North American and 

 was founded in 1892 by Van Duzee (Psyche, Vol. 6, p. 306). At 

 that time he included four species, C. unicolor, tergatus, viridius 

 and galbanatus, the first named being cited as the type. Additions 

 have been made to this number by Van Duzee, Osborn, Ball, 

 Baker, Crumb, Sanders and the author until the genus com- 

 prises thirty-one species and one variety which are treated in 

 this paper. Not all of these are North American, but can be 

 included in a survey of the genus. Two were described from- 

 Brazil (Baker), one from Mexico (Baker), one from Jamaica (Van 

 Duzee), one previously recorded and three treated as new in this 

 paper from Guatemala (Osborn), and the others are primarily 

 nearctic forms, the majority of which seem to be distributed over 

 the Eastern half of the United States. 



In view of the fact that the original descriptions of these 

 species are scattered in numerous publications, that five species 

 and one variety have been added during the last two years, and 

 several at hand are undescribed, it seems advisable to review the 

 genus, presenting drawings and descriptions of both known and 

 new species and a key for their separation. The species described 

 as C. nacreosa (Crumb) does not belong to the genus, apparently, 

 so is not included in this survey. 



The genus is closely allied to Thamnotettix, Eutettix and Phlep- 

 sius, but can be separated from the last two very easily by the 

 entire absence of the ramose pigment lines on the elytra which 

 are characteristic of these two genera. The members of Chloro- 

 tettix are less easily distinguished, however, from the species of 

 Thamnotettix since they have the same wing venation and resem- 

 ble them in size, often in color and general appearance. Van 

 Duzee in separating these two genera makes this distinction in 

 his original description of the Genus Chlorotettix. "The head is 

 still broader, well rounded before and of almost equal length 



*Contribution from the Department of Zoology and Entomology, Ohio State 

 University, No. 54. 



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