120 
Psyche 
[Vol. 91 
certainty from Florida, and from a questionable specimen from 
Maryland (see Sabrosky and Steyskal, 1974: 378). 
As a result of this study, the following nomenclatural changes 
result: 
Sobarocephala affinis (Johnson), 1913: 101. new combination. 
Sobarocephala testacea So6s, 1964: 449. new synonymy. 
The holotype of Chaetoclusia affinis Johnson is in poor 
condition. It is missing the head and the legs beyond the 
trochanters, except that the right front femur and tibia are present. I 
have removed and cleared most of the abdomen, including the male 
terminalia, and placed them in glycerin in a microvial on the 
specimen pin, so that they will be better preserved and more useful 
for future workers. Due to the absence of the head, the male 
genitalia are the only features of the type that will allow conclusive 
identification of the specimen. 
Because C. affinis Johnson really belongs in Sobarocephala, this 
deletes the only species ascribed to Chaetoclusia from the Nearctic 
fauna. The genus is now known only from the Neotropical Region 
extending from Nicaragua south to Peru, and also Haiti and St. 
Vincent (So6s, 1968). It seems unlikely that the genus will be found 
in the Nearctic Region, although its Caribbean distribution makes it 
just possible that it might someday be found in southern Florida. 
I wish to thank Wayne Mathis, Department of Entomology, 
Smithsonian Institution, and D. R. Miller, Systematic Entomology 
Lab, USDA, for reviewing the manuscript. 
Literature Cited 
Johnson, C. W. 
1913. A study of the Clusiodidae, (Heteroneuridae) of the eastern United 
States. Psyche 20:97-101. 
Melander, A. L. and N. G. Argo. 
1924. A revision of the two-winged flies of the family Clusiidae. Proc. U. S. 
Nat. Mus. 64:1-54. 
Sabrosky, C. W. and G. C. Steyskal. 
1974. The genus Sobarocephala (Diptera: Clusiidae) in America north of 
Mexico. Ann. Ent. Soc. Amer. 67:371-385. 
So6s, A. 
1963. Identification key to the species of the "‘plumata- group” of the genus 
Sobarocephala Czerny (Diptera: Clusiidae). Acta Zool. Acad. Sci. 
Hung. 9:391-396. 
