1967] 
Porter — Trachysphyrus 
33 
northern Argentina appears to be a major center of diversification 
for Trachysphyrus in South America (on the basis of the fairly well 
collected Peruvian fauna). Indeed, it is likely the first and most im- 
portant of such centers of diversification as Trachysphyrus gives evi- 
dence of being an autochthonously Holarctic genus which entered 
South America from the north along the high temperate corridor 
afforded by those mountains that buttress the whole western edge of 
the New World. 
Specific Name: IToplites is a Greek noun meaning “heavy-armed 
foot-soldier”. It was chosen in reference to the tremendous propodeal 
apophyses that characterize this species. 
Acknowledgements: This paper was conceived during a visit 
to the American Entomological Institute (Ann Arbor, Michigan) 
made possible by funds from the Evolutionary Biology Committee 
of the Harvard Biology Department. Dr. H. K. Townes of the 
American Entomological Institute arranged for the loan of the series 
described and kindly allowed the retention of paratypes for the 
Museum of Comparative Zoology and for the author’s personal 
collection. 
References 
Porter, C. C. 
1967. A Systematic Revision of the South American Species of the 
Genus Trachysphyrus Haliday (Hymenoptera, Ichneumonidae) . 
In press. Accepted for publication in 1967 as a Memoir of the 
American Entomological Institute. 
Townes, H. K. and M. Townes 
1962. Ichneumon Flies of America North of Mexico: Gelinae: Meso- 
stenini. Bull. U.S. Nat. Mus. 216 (pt. 3). 
