PSYCHE 
Vol. 60 
March, 1953 
No. 1 
THREE NEW ANTS RELATED TO STRUMIGENYS 
LOUISIANAE ROGER! 
By William L. Brown, Jr. 
Museum of Comparative Zoology, Harvard University 
In this time of high printing costs, the difficulty of pub- 
lishing in one large work the results of my studies on the 
ant tribe Dacetini has forced me to break up what would 
otherwise be a revision in one piece into many smaller 
treatments. It is hoped that, with the publication after 
each large natural group of a concise key and other general 
information, the effect of a revision within the same covers 
will be approached. 
Below are described three new species closely related to 
Strumigenys louisianae Roger, the latter being a common 
and well-known form ranging from Tennessee and Arizona 
south through the West Indies and Central America and 
reaching Bolivia and northern Argentina. S. louisianae has 
been known under several names in different parts of its 
range (S. bruchi Forel, S. infidelis Santschi, S. eggersi 
cubaensis Mann and S, louisianae, various subspecies and 
varieties), but all of these names are treated as synonyms 
in an extended discussion of this form at present in press. 
A distributional peculiarity of S. louisianae seems to be 
pointed up by the lack of records from the rainforest areas 
of the Amazon-Orinoco Basins and from the extensively 
collected Panamanian localities centering on Barro Colorado 
Island. 
The descriptions given are all strictly comparative ones 
^ Published with a grant from the Museum of Comparative Zoology 
at Harvard College. 
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