Deraeocoris (Heteroptera, Miridae) 81 



thirty-nine previously described forms. Renter ( 1875 ) removed 

 nearly all the species which had been included by Kirschbaum. mak- 

 ing the genus practically coextensive with Capsus of Fieber (1861), 

 the latter author having failed to recognize Deraeocoris in his im- 

 portant work on the European Hemiptera. Distant (1904) named 

 oUvaccns (Fabr.) as genotype, while Kirkaldy (1906) to be more 

 exact, named mcdhis Kirschbaum (= olivaccns Fabr.) as type of 

 Deraeocoris. A pseudotype, ruber (Linn.), was named by Oshanin 

 (1912). 



Renter ( 1909) in a revision of the Nearctic species under the 

 genus Camptobrochis, in substance expressed the opinion that he was 

 very doubtful if Camptobrochis Fieber and Deraeocoris Kirschbaum 

 are to be separated. It remained for Poppius (1912) in his great 

 work on the African Miridae to definitely place Camptobrochis as a 

 synonym of Deraeocoris. This conclusion was reached after that 

 author had made a careful study of collections from every quarter 

 of the globe, material which represented no doubt the greatest amount 

 ever assembled. Mr. Van Duzee (1916) has indicated that Campto- 

 brochis and Deraeocoris may be separated by characters found in the 

 antennae and lateral margins of the pronotum. The writer would state 

 that in the present work the number of North American species has 

 grown until every variation from the cylindrical to clavate type of 

 antenna is represented, likewise the carinate and ecarinate form of 

 pronotum, there being a gradation of both characters so that among 

 a few forms it is quite impossible to decide on that basis, into which 

 group the species should be classed. The final outcome has been that 

 a new set of characters has been l)rou'>ht forward in an effort to 

 separate the genus into groups as indicated belov^. 



After a considerable period of research for available characters 

 in Deraeocoris. the writer has been able to separate the species into 

 groups, one of which represents Camptobrochis as a subgenus, if we 

 may have such, but in a much more restricted sense than has been the 

 usage in the past. The species closely related to the genotype of Campto- 

 brochis are chiefly distinguished by the punctate scutellum, spined 

 character of the hind tibiae, a rather distinctive type of left genital 

 clasper. and perhaps by the fact that the species hibernate as adults. 

 In the North American fauna the group now includes nebiilosits Uhler 

 and ten other closely related species. Perhaps some w^orkers would 

 consider Camptobrochis as a genus on the premises submitted, but 

 judging by a comparative study of tibial characters as found in the 



