NOTES AND DESCRIPTIONS OF NEOTROPICAL SAWFLIES 

 OF THE SUBFAMILY PERREYIINAE. 



By S. A. Rohwer, 



Custodian of Hymenoplera, United Slates National Museum. 



In endeavoring to determine some species of the subfamily Per- 

 reyiinae considerable difficulty was experienced in placing the various 

 species into the genera recognized by Konow and Schrottky. The 

 more the matter of the genera was considered the more evident it 

 became that the present keys were unsatisfactory and the more 

 convinced the writer became that a satisfactory solution could not 

 be brought about by the study of the literature and the few specimens 

 available. It did seem, however, that if the new forms were to be 

 described it would be necessary to express in a definite manner just 

 what conception was placed on the various genera. To do this the 

 following key, which includes all the Neotropical genera placed by 

 Konow in his tribe Perreyides, has been prepared. Specimens of all 

 of the genera have not been examined and with the exception of 

 Paraperreyia Schrottky the genotypes of none have been studied, so 

 it is not. certain that all of these genera belong to the subfamily as 

 here limited. This is especially true of Camptoprium Spinola, which 

 is described as having long, filiform palpi-, the maxillary having six 

 joints and the labial four joints. The long normal jointed palpi 

 make it necessary to refer this genus to the Perreyiinae with doubt, 

 because in all species where the palpi have been examined they are 

 found to be short and with the number of joints reduced. That the 

 separation of Perreyia and Paraperreyia given by Schrottky (and it 

 is practically the same as that given by Konow for Perreyia and 

 Bracliytoma) is at least open to verification is evidenced by the associ- 

 ation of sexes hi Lophyroides tropicus as given by Cameron. 1 The 

 male of tropicus, because of its ramose antennae, would belong to 

 Perreyia, while the female, because of the short joints of the flagellum, 

 would go to Paraperreyia. Since the genera are not sufficiently well 

 understood, it has been deemed advisable to place the species in 

 genera already described rather than adding new generic names. It 

 is to be noted that the work of Cameron on this group was perhaps 



i Biol. Centr.-Amer. Hym., vol. 1, 1883, p. 61. 



Proceedings U. S. National Museum, Vol. 59— No. 2366. 

 27177— 21— Proc.N.M.vol.59 11 161 



