110 



Psyche 



[June 



A NEW SLAVE-MAKING ANT FROM JAPAN. 



By M. Yano, 

 Imperial Forestry Experiment Station, Tokyo, Japan. 



One of the most interesting Japanese ants in my collections is a 

 slave-making species, belonging to Polyergus, and apparently 

 distinct from the known European and North American forms of 

 the genus. 



Polyergus rufescens Latreille subsp. samurai subsp. nov. 



Worker. Length 5-6 mm. 



Head nearly pentagonal, excluding mandibles; with somewhat 

 parallel sides, prominent occipital portion and nearly straight 



Fig. 1. Polyergus rufescens Latr., subsp. samurai 

 subsp. nov. Profile of thorax in female and worker. 



posterior border; the mandibles narrow and long, curved inward, 

 pointed, with a minutely dentate masticatory margin, clypeus 

 triangular, broad, and flat, its anterior margin nearly straight; 

 frontal area small, distinctly broader than long, its posterior suture 

 rounded, anterior suture nearly straight; median line long and 

 distinct; antennal carinse not distinct; antennae rather short, the 

 scapes just reaching to the posterior border of the head, somewhat 

 swollen apically, the flagellum long, filiform; ocelli very distinct; 



