HOW TO KNOW THE INSEOS 



Figure l- 



Fig. 140. Hlppodamia convergens Guer. 

 The Convergent Lady Beetle. 



Head and thorax black, marked with 

 pale yelloY/. Elytra orange red with a 

 common scutellar spot and six small 

 spots on each, black. (Part of the 

 spots are not always present) Underparts 

 black. Length 5-6 mtl. (From U.S. D. A. ) 



Lady beetles have long been favorites 

 with man. They protect his plants from 

 destruction and entertain his children. 

 V/hile many lady beetles are spotted^ 

 some are plain colored and others 

 striped. I.-'any spotted insects of this 

 size are not lady beetles as the be- 

 ginner sometimes supposes. We have many lov/a species. They 

 range in length from 1 mm. to alm.ost 10 mm^. 



47b Tarsal claws simple. First ventral abdominal segment with- 

 <5ut coxal lines. (The Handsome Fungus Beetles). Fig. 141. 



Fami ly 83, ENDOMYCHIDAE 



Fig. 141. Endomychus biguttatus Say 



Elytra red marked with black. Head, antennae, 

 legs, thorax, and scutellum black. Length about 

 4 mm. (Redra^m from Blatchley's Coleoptera of 

 Indiana. ) 



Figure 141. 



48a Beak absent or very short and broad. Antennae short and 

 always elbowed. Tibia usually with teeth. (The Engraver 

 Beetles) Fig. 142. Family 109, SCOLYTIDAE 



Fig. 142. Scolytus rugulosus Ratz. 

 (a, dorsal view; b, side view.) 

 The Fruit Bark-Beetle. 



Blaclcish; antennae, tibiae, tarsi 

 and apex of elytra reddish brovm. 

 Does serious dam.age to fruit trees. 

 Length 2-2.5 nun. (From U.S.D.A.) 



The Scolytids vary widely in form 

 but are much alike in being exceed- 

 ingly destructive. Because of their 

 uniquely designed galleries in the 

 cambium of tree trunks they are 

 called "engraver beetles." The lum- 

 bering industry has paid a heavy 

 toll to them. IJany species are very 

 small. But little has been done to determine the nimiber of 

 species in Iowa, yet they have a vital relation to our reforesta- 

 tion program. 



figure 142. 



74 



