ANIMALS OF THE DUNES 



157 



black bands. The long-horned locust (Fig. 156) is small, the 

 male two-thirds of an inch long, the female seven-eighths inch. 

 The antennae are half as long as the body, or more. The inner 

 wing has the basal third red, orange, or rarely yellow. The 

 middle third of the wing is covered by a curved black band, the 

 outer third is clear, except for a dusky tip. 



Back of the digger wasp association comes the transition 

 stage and the pine association in the plant zonation. Both of 



FIGS. 156-159: Fig. 156. Long-horned locust, Psinidia fenestralis. After 

 Lugger; Fig. 157. Lesser migratory locust, Mclanoplus atlanis. After Lugger; 

 Fig. 158. End of abdomen of male of narrow- winged locust, Melanoplus angusli- 

 pennis; Fig. 159. Sand locust, Ageneotettix arenosus. 



these support nearly the same animal population, and it is a 

 very characteristic one. Nowhere else in the Chicago area, 

 unless it be in the sphagnum-tamarack swamps, does one seem 

 to be so far removed from the expected environment. The 

 coniferous trees, the evergreen shrubs, and the herbaceous 

 flowering plants, many of which are quite boreal, are more 

 striking but no more peculiar than the animals encountered. 



