1916] Andrews — Neiv Ant of the Genus Messor 81 



PARASITES OF ARCH I PS CERASIVORANA FITCH. 



While collecting at Bennington, Vt., from June 18-24, 1915, 

 I found the webs of the CJjerry-tree Ugly-nest Tortricid (Archips 

 cerasirorana) quite abundant on the wild cherry along the hedge 

 rows. Bringing home six of the nests to ascertain to what extent 

 they were parasitized, the following insects emerged between July 

 6 and 12. Moths 302. Dipterous parasites: Dichaioneura leucop- 

 tera Johns. 104 and Neopales tortricis Coq. 2. Hymenopterous 

 parasites: Bassus agilis Cress. 6, and Labrorychus prismaticus 

 Nort. 26. The latter was also bred in considerable numbers from 

 the same species at Winchendon, Mass., by the late Dr. F. W. 

 Russell. Itoplectis (Pimpla) conquisitor Say. was bred from nests 

 taken by the writer at Milford, N. H., July 5, 1914. I am indebted 

 to Mr. H. L. Viereck for the determination of the Hymenopterous 

 parasites. 



C. \Y. Johnson. 



A NEW ANT OF THE GENUS MESSOR FROM COLORADO. 



By Hazel Andrews, 

 University of Colorado, Boulder, Colo. 



A few years ago Prof. T. D. A. Cockerell collected four workers 

 of this ant at Glen wood Springs, Colo., not noticing at the time 

 that they were anything unusual. Recently, while working on the 

 genera Messor, Aphoenog aster, and Pogonomyrmex, we found these 

 specimens mixed with the series of Pogonomyrmex occidentalis 

 which they superficially resemble. It was evident that they could 

 not belong to Pogonomyrmex , on account of the impressed dorsal 

 suture and other characters, and on looking up the literature we 

 failed to find any similar species described. Dr. W. M. Wheeler, 

 who kindly examined a specimen confirms the species as new, and 

 considers that it must be referred to Messor rather than Aphceno- 

 gaster. He further notes that it presents some characters suggest- 

 ing that it may, in a certain sense, be regarded as intermediate 

 between Messor and Pogonomyrmex. 



