158 A NATURALIST IN THE GREAT LAKES REGION 



As already noted, the bronze tiger beetle (Fig. 145) is here as 



well as the burrows of its young. Shelford names the whole 



association from this form, although the adult animal is found 



quite as commonly back in the next association. Here, too, 

 particularly in the transition area, is the 

 large tiger beetle (Fig. 145). The white ant 

 is abundant under the logs. Digger wasps 

 are still in evidence, though of species 

 different from those of the preceding zone. 

 The black ant, Lasius niger americanus, 

 builds its nests in the sand. The mottled 

 sand locust, the migratory locust, the 

 narrow-winged locust, and the sand locust 

 are pretty well confined to this zone. The 

 FIG. 1 60. Longhorn mottled sand locust (Fig. 155) is small, the 



beetle, Monohammus female being about i inch long, the male 

 .8 of an inch. The inner wings are yellow 



with a dark, curved median band. The antennae are as long 



as the hind femur. The tibia is coral red with white rings. The 



lesser migratory locust (Fig. 157) is also small, about the same 



size as the preceding. The femur of the hind 



leg is reddish yellow and bears two oblique 



dark bars across the upper outer face. The 



knees are black. The lower part of the face is 



usually pink. The inner wings are thin and 



colorless. The narrow- winged locust (Fig. 1 58) 



is also small, slightly under an inch. The 



antennae are shorter than the femur of the 



hind leg. The hind tibia is pale blue or bright 



red. The inner wings are transparent and 



colorless. The sand locust (Fig. 159) is 



small, the male being .6 of an inch long, the 



female .8 inch. The animal is dull brown, the hind tibia is bright 



scarlet with a basal white ring. On the juniper several spiders 



are found, Philodromus alaskensis, Xysticus formosus, Dendry- 



FIG. 1 6 1. Metallic 

 wood-boring beetle, 

 Chalcophora liberta. 



