MORGAN HEBARD 95 



1903. F. Silvestri. Contribuzioni alia conoscenza dei Mir- 

 mecophili. I. Osservazioni su alcuiii ]\'Iirmecofili dei dintorni 

 de Portici. Ann. Mus. Zool. R. Univ. Napoli, (Nuova Ser.), 

 i, no. 13, pp. 4 and 5. 



1909. F. Schimmer. Beitrag zu einer Monographie der 

 Gryllodeengattung Myrmecophila Latr. Zeitschr. f tir Wissensch. 

 Zool., cxiii, pp. 409 to 534, pis. xxii to xxiv, 26 text figures. 



We would observe that it has been ascertained, that different 

 European species differ somewhat in their relations with their 

 hosts. It would appear prolxable that the North American 

 species all agree in being unwelcome inhabitants of the ants' 

 nests, doing little or no harm to their hosts and wholly dependent 

 upon them for the type of nourishment required.^ 



Each species is appai-ently symbiotic with a large number of 

 species of ants. It has been shown, however, that certain species 

 of ants are greatly preferred. 



The following list shows the species of host ants with which 

 the four North American species of Myrmecophila have been 

 found to occur. 



MyrmecophUa pergandei Bruner 

 Crematogaster lineolata Formica pallidefulva 



Aphaenogaster treatae Formica truncicola 



Lasius umbratus Camponotus herculeanus 



Formica fusca Camponotus castaneus 



Myrmecophila oregonensis Bruner 

 Pheidole htjntti Prenolepis obscura 



Veramessor andrei Formica cinerea 



Pogonomyrmex californicus Formica camponoticeps 



Myrmica bradleyi Formica rufibarbis 



Tapinoma sessile Formica fusca 



Prenolepis imparis Camponotus herculeanus 



Camponotus maculatus 



Myrmecophila manni Schimmer 

 Crematogaster lineolata Formica rufibarbis 



Myrm ica m u tica Formica fusca 



Liometopum apiculaium Formica neogagates 



Tapinoma sessile Formica rufa 



Lasius niger Camponotus maculatus 



Camponotus acutirostris 



5 Observations made by various authors indicate that the food of these 

 crickets is largely the secretions which hibricate the ants bodies and which 

 are left on the walls of their passage ways, partly the food of the ants. 



TRANS. AM. ENT. SOC, XLVI. 



