MORGAN HEBARD 91 



A REVISION OF THE NORTH AMERICAN SPECIES OF THE 



GENUS MYRMECOPHILA 



(ORTHOPTERA; GRYLLIDAE; MYRMECOPHILINAE) 



BY MORGAN HEBARD 



In recent years we have had frequent requests to determine 

 North American material of the minute crickets which Kve in 

 ants' ne«ts, all of which belong to the cosmopolitan genus Myr- 

 mecophiln. ]\Iuch difficulty has been experienced in distinguish- 

 ing the nominal species and a complete revision was clearly 

 imperative, as soon as sufficient material could be assembled. 



General collectors, and even Orthopterists, rarely encounter 

 these sti'inge little creatures, owing to their small size and con- 

 cealed habitat, even in regions where they are known to be al)un- 

 dant. The Hymenopterists, particularly those specializing on 

 ants, however, discover these insects much more frequently, 

 and it is to two of these. Professor W. M. Wheeler, of the Bussey 

 Institution, and Mr. W. M. Mann, of the Department of Agri- 

 culture, that we are deeply indebted for the loan of a large por- 

 tion of the material forming the basis of the present study. In 

 addition. Professor Wheeler has furnished invalual)le aid in deter- 

 mining all of the numerous species of ants recorded in the present 

 paper. All of the material in the Hebard Collection, the United 

 States National ^Museum and the Academy of Natural Sciences 

 of Philadelphia furnished practically the entire remainder. We 

 grasp the present opportunity to thank most heartily Mr. W. T. 

 Davis for submitting this portion of his collection, and Ijoth 

 Mr. A. N. Caudell, of the National Museum, and Mr. James A. G. 

 Rehn, of the Philadelphia Academy, for the privilege ot studying 

 this portion of the collections entrusted to their care. 



MYRMECOPHILA Latreille 

 1829. Myrmecophila Latreille, Regne Anim., (ed. 2), v, p. 183. 



At the time of original description the genus was considered 

 mbnotypic. 



Genotype. — Myrmecopkila acervorum [Blatta acervorum] (Panzer). 



The number and proportionate length of the spines and spurs 

 of the caudal tibia, and spines and spinulae of the caudal meta- 



TRANS. AM. ENT. SOC, XLVI. 



