PSYCHE 
Vol. 58 June, 1951 No. 2 
STUDIES ON ARIZONA ANTS. 
1. THE HABITS OF CAMPONOTUS ULCEROSUS 
WHEELER AND ITS IDENTITY WITH C. BRUESI 
WHEELER. 
By Wm. S. Creighton 
Department of Biology 
College of the City of New York 
During the summer of 1950 the writer enjoyed the privi- 
lege of spending three weeks in the Huachuca Mountains 
of Arizona. This was made possible through the courtesy 
of Mr. Charles Bogert, Curator of Herpetology at the Ameri- 
can Museum of Natural History. Mr. Bogert permitted us 
to use a four wheel drive jeep and trailer belonging to his 
department. We met Mr. Bogert and his party in the Hu- 
achucas and there we collected reptiles and insects. July 
1950 was a very wet month in the Huachucas and the col- 
lecting, as far as the ants were concerned, was all that could 
have been asked. I was able to study the habits of several 
species which I had previously known only from cabinet 
specimens. I wish to express my thanks to Mr. Bogert and 
to the American Museum of Natural History for their part 
in making these studies possible. 
One very surprising result of this work was the discovery 
that ulcer osus and bruesi are specifically identical. The in- 
sects to which these two names have been applied have 
hitherto been regarded not only as separate species but as 
representatives of separate subgenera in the genus Campo- 
notus. This unusual situation has resulted from attempts 
to deal with wholly inadequate material. The error was, 
therefore, unavoidable for, as I shall show, the structure of 
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