8 Ittino1is NATURAL History SURVEY BULLETIN Vol. 22, Artvl 
Fig. 6.—Sand prairie vegetation at Beach, Ill., growing on the beaches left by receding Lake 
Michigan. Note the luxuriant growth of grass and herbs. 
been taken in Illinois only in the extreme _ birch family, serve as host for a wide variety 
southern tip, fig. 10. of Miridae the distribution of which in gen- 
eral follows that of our forested areas. 
Forest Mirids A decided peculiarity of the tree-inhabit- 
ing Miridae is their preference for forest- 
Species of deciduous forest trees, especial- edge conditions. A given species will gener- 
ly ash, oak, hickory and members of the ally be taken in abundance on only those host 
Jae, 
- 
_Fig. 7.—Older beaches of the sand prairie area near Zion, Ill. Here the forest-edge conditions, 
with luxuriant vegetation, offer an ideal habitat for many species of Miridae. This area was 
formerly one of bare, shifting sand. 
