1927] 
Notes on the Stripsiptera and then Hosts 
187 
solidaginis Robt., det. Viereck. Nebraska: Malcolm (C. R. 
Oertel); New Jersey: Alpine and Fort Lee (Jos. Be- 
quaert). 
vicina Sm., det. Viereck. Massachusetts: Petersham (C. T. 
Brues). 
Panurginus 
innuptus Ckll., det. Stevens. North Dakota: Minot (0. A. 
Stevens). 
Pseudopanurgus 
cethiops Cress., Colorado: Wray. 
rudbeckice_ Robt., det. Robertson. Illinois: Carlinville (Chas. 
Robertson) . 
solidaginis Robt., det. Robertson. Illinois: Carlinville 
(Chas. Robertson). 
Various writers have given data on the extent of parasitism 
by Strepsiptera, and in his monograph and its supplements, 
Pierce (1909, 1911, 1918) has brought together these records and 
added others. Most of the published notes, however, deal with 
Polistes and Andrena, whereas the following have to do largely 
with other genera. 
In 1922, Dr. W. M. Wheeler collected a total of 373 speci- 
mens of Andrena hirticincta Prov. Forty-four of these or 11 .9% 
were stylopized, 6 of 23 males or 26.1%, and 38 of 350 females 
or 10.9%. His collecting records for the same year of species of 
Chloralictus, mostly albipennis, show 98 stylopized of a total of 
470 specimens collected, an infestation of 20.9%; 88 of 378 
males or 23.3% were stylopized, and 10 of 92 females or 10.9% 
No collecting records are available for the Vespidse other 
than Polistes but some indication of the extent to which they 
suffer from strepsipterous attack may be obtained from the fre- 
quency of the occurrence of stylopized individuals in collections. 
Of 4525 specimens of miscellaneous Eumeninse examined by the 
writer, 74, or 1.64%, were stylopized. Collections of particular 
genera' contained stylopized specimens as follows: 
Masarinsc of 96 specimens, 0 stylopized, or 0 % . 
Zethus 
Eumenes 
of 53 
of 214 
2 
3 
