182 
Psyche 
[December 
SYNONYMY OF THE GENUS PSEUDOXENOS 
SAUNDERS (STREPSIPTERA, XENID^E) AND 
RECORDS OF STYLOPIZED HYMENOPTERA 
FROM NORTH CAROLINA 
By Richard M. Bohart 
University of California, Berkeley 
The genus Pseudoxenos was erected in 1872 by S. S. 
Saunders for parasites of the eumenid genus Odynerus. 
Further taxonomic work on members of the genus was done 
by Pierce, 1908, 1909, 1911, 1918; A. Ogloblin, 1924; Monod, 
1925; and Esaki, 1932. Altho considerable information is 
available as a result of the efforts of these men, certain im- 
portant characters of the female and first larva have been 
inadequately described. 
Males, females, and first stage larvae of several unde- 
scribed species of Pseudoxenos are in the author’s collection. 
From this material the following has been observed. In the 
male the anterior edges of the scutellum may be convergent 
or may be nearly parallel, thus invalidating the character 
used by Pierce, 1918, to separate the tribe Pseudoxenini from 
parasites of the Sphecoidea; the female has three genital 
tubes as do the parasites of Sphecinse; and the first stage 
larva has five ocelli as in all the known strepsipterous 
parasites on wasps. 
A careful comparison in all stages of these typical 
Pseudoxenos with specimens in the author’s collection of the 
genera erected by Pierce, 1908, 1909, on the basis of host 
relationships and insufficient data; that is, Leionotoxenos 
from Odynerus and Eupathocera,Ophthalmochlus,Homilops, 
and Sceliphronecthrus from Sphecinae, has failed to show 
any generic differences whatsoever. The characters used by 
Pierce, such as the shape of the scutellum and “consistency” 
of the postlumbium in the male, and shape of the cephalo- 
thorax and position of the spiracles in the female, vary 
widely and hence are useless. 
