124 



SCHOOL ENTOMOLOGY 



13. 



the hind tarsi. Most of 

 these are found about 

 decaying wood and under 

 bark. Many species feed 

 on fungous growths. A 

 few Tenebrionids infest 

 stored grains and grain 

 products. The largest of 

 these is the Meal-worm. 

 It is nearly an inch long, 

 slender and parallel sided 

 and somewhat flattened. 

 The meal worms them- 

 selves resemble wire- 

 worms but are shorter and 

 stouter and flattened on 

 the under surface. They 

 may be found in old feed 

 bins where masses of part- 

 ly spoiled grain have been 

 left undisturbed. Some 

 of the other grain beetles 

 of this family are much 

 smaller, about an eighth 

 of an inch long, and are 

 found in company with 

 the saw-toothed grain 

 beetle. 



FIG. 92. Types of Beetles. 

 Natural size. 



1, 2, 3, and 4, Tenebrionidce 5, 

 6, and 7, Blister-beetles (Meloidce); 

 8, MdandryidcE ; 9, Bruchidce ; 10, 

 Pyrochroidce ; 11, Spondylidce \ 12, 

 Histeridce ; 13, Trogositidce \ 14, 

 Cucujidae. 



