54 STUDIES IN AMERICAN TETTIGONIIDAE (oRTHOPTERA) 



This interesting species, which previously never has been 

 properly differentiated from the more northern testaceus, is a 

 moderately close relative of the latter species, but is so distinct 

 in general appearance, particularly in the male sex, that no diffi- 

 culty need be encountered in distinguishing the two forms. 

 In the female sex the two species might be mistaken in a 

 superficial examination, but the distinctly longer caudal femora 

 of the present form will separate them immediately on comparison 

 of material. 



The important features of difference from the generally well 

 known testaceus are as follows: In both sexes, the caudal femora 

 are at least twice ( cf ) or more than twice ( 9 ) as long as the 

 pronotal disk; the cephalic and median limbs are relatively longer; 

 the greatest caudal width of the pronotal disk is equal to 54 to 

 66 per cent of the greatest length of the same; the prosternal 

 spines are more aciculate and elongate and the mesosternal 

 lobes are more acute. In the male sex the pronotum is less 

 expanded caudad, the divergence of the lateral carinae being 

 less pronounced; the tegmina are well produced, the portion 

 distad of the transverse impression distad of the stridulating 

 field distinctly shorter than in testaceus; the cerci are more slender 

 and more acuminate, the apex more produced, the tooth more 

 nearly median than in testaceus; subgenital plate of the male 

 with the distal margin rectangulate-emarginate to acutely sub- 

 fissate, styles slender and relatively elongate. In the female 

 sex the abdomen has the lateral carinaie distinctly and the median 

 carina slightly more pronounced; the ovipositor, while of approx- 

 imately the same length as in testaceus, is relatively much shorter, 

 being considerably less than the length of the caudal femur, the 

 form of the ovipositor similar to that of testaceus but hardly as 

 deep; the subgenital plate is more deeply divided and the lateral 

 portions rotundato-rectangulate. 



Synonymy. — We are able to place Burmeister's name on this 

 species by a process of elimination. It is very briefly charac- 

 terized, there being nothing diagnostic in the several lines of 

 general description, but the three words describing the male, 

 "elytris hberis fornicatus," clearly refer to this species, testa- 

 ceus or davisi; of these only the present form occurs near the 

 coastal region of South Carolina, from which, as already shown, 

 the original material of pachynierus probably came. The char- 



