MONOGRAPH OF THE GENUS SAPERDA 7 



the claws armed as in t r i d e n t a t a. Males of the other carinated 

 species were not obtained. Should this genus be accepted our S. 

 tridentata would be included in it. 



Subgeneric grouping. One character that could be used for a 

 subgeneric division is the presence or absence of the process^ on the 

 claws of the males. Though we consider this character of little 

 value except to show the relation of the species and really a sign of 

 specialization and not of much generic importance, as its occurrence 

 in genera^ not very closely related to Saperda shows, its use as a basis 

 of division would group the species as follows. 



Group I 



Group 2 



Group 3 



Group 4 



Process on anterior 



Process on both 



Process on anterior 



Process wanting 



claw of front and middle 



claws of all tarsi 



cUw of middle tarsi 





tarsi 









obliqua 



lateralis 



puncticollis 



populnea and its 



mutica 







forms 



hornii 







concolor 



Candida 









calcarata 









tridentata 









cretata 









discoidea 









vestita 









imitans 









fayi 









^LeConte and Horn, in their classification of the Coleoptera of North 

 America, make the erroneous statement that this process is wanting in 

 the European species. It is however very prominent in carcharias, 

 punctata, 8-punctata and probably in others of which we did 

 not see males. Lacordaire, in Genera of Coleoptera, also seems to imply 

 that it is wanting in the European species. LeConte, in Ahw Species of 

 North American Coleoptera, part 2 [Smithsonian Miscel, Coll. 264. 1873. 

 p. 239] overlooks the process on the claw of the middle tarsi of p u n c t i - 

 c o 1 1 i s and the armature of all the claws of lateralis. Subsequent 

 authors have committed the same errors. 



*In the species of Thyestes which we have seen, the males are armed 

 as in puncticollis. The males in the genus Eutatrapha are armed 

 as in the first group. Those ofParaglenea fortune! are like 

 those of lateralis. The males we have seen of the European species 

 group as follows. To the first group belong carcharias, punctata, 

 8-punctata, and to group 4 populnea and s c a 1 a r i s . The 

 males of the other species we were not able to obtain. 



