REHN AND HEBARD H 



STUDIES IN AMERICAN TETTIGONIIDAE 



(ORTHOPTERA) 



IV 



BY JAMES A. G. REHN AND MORGAN HEBARD 



A SYNOPSIS OF THE SPECIES OF THE GENUS 

 ORCHELIMUM 



For a number of years the species of the present genus have 

 been greatly in need of study, the litei-ature covering the same 

 shomng a considerable number of specific names the exact rela- 

 tionship of which was not known at all or only very indefinitely 

 understood. The keys to the species which we possess 'd, i. e., 

 those of Redtenbacher, McNeill, Blatchley, and Karny, were 

 based largely on characters the value of which our own studies 

 show to be nil or but relative. The attempts made b}- many 

 workers, ourselves among them, to use the previous keys have 

 resulted in a great mass of misidentifications, due to the fact 

 that the tables used, almost "without exception, emphasized 

 valueless or but secondary characters and entirely ignored those of 

 greatest value. Another factor, which has contributed its share 

 to the confusion in the past, has been the difficult}' of positively 

 locating some of the older names; a matter which has caused 

 error on the part of everyone who has published at all on the 

 genus. 



The examination or possession of types and paratypes of the 

 majority of the species has enabled us to straighten out the 

 tangles and present a clear idea of the relationship of the forms, 

 while much study and correspondence has permitted us to place 

 to our own satisfaction practically all of the older names which 

 caused trouble in the past. The present situation in Europe has 

 precluded our securing certain desirable information concerning 

 these older types, but we feel that anj^thing further would be 

 merely confirmatory and that we have carefully weighed and 

 considered everj^ possible source of information in the literature. 



TRANS. AM. ENT, SOC, XLI. 



