HOW TO KNOW THE INSECTS 



30b Not as in 30a 

 31a The first and 



c I osel y I oi ned to 



Fig. 119. 



32 



Figure ll-'. 



second abdominal segments fused; prothorax 

 mesothorax. (The Metallic Woodborers) 



Fami ly 54, BUPRESTIDAE 



Fig. 119. Chrysobothrlc femorata Fab. 

 (a, larva; b, adult. ) The Flat 

 Headed Apple Borer. 



Dark bronze with branny metallic 

 luster. Whitish markings on elytra 

 variable. The larvae bore in the 

 trunks of v/hlte oak, apple, and other 

 trees. Length 8-16 nun. (From U.S.D.A.) 



The i.Ietalllc Woodborers are favo- 

 rites with collectors. Tost of them 

 look as though they '.vere a product of 

 our machine age. Some are very bril- 

 liantly colored. They run through a 

 wide range of shapes and sizes. 



31b Ventral 

 mesothorax . 



segments not fused; Prothorax loosely 



(The Click Beetles) Fig. 120 



■ -- -y 



joined to 



Fami 



51 



ELATERIDAE 



Fab. 



Fig. 120 I;'onocrepidius vespertinu^ 

 (a and b, larvae; c, adult . ) 



Usually yellow beneath and dark reddish 

 brown above, side markings on thorax and 

 elytra yelloxv. Length 7-10 mm. (From U.S. 

 D.A.) 



The Click beetles are so named because of 

 their unique scheme for righting themselves 

 when turned on their backs. Two or three 

 flips into the air Is quite certain to land 

 them right side up, then they lose no time in 

 F:rn;re i''o. runnlug away. The larvae are wire ■:.'orms; 



many of them live in decaying logs but m.any 

 others attack growing plants and accordingly are in ill repute 

 with farmers and gardeners. The family is a large one. 

 32a Body flattened, middle coxa I cavities open behind. (The 

 Flat Bark Beetles or Cucujids) Figs. 121, 127 and 130. 



Family 72, CUCUJIDAE 



121. OrvzaeDhllus surinamensis (L 



Fig. 121. Qryzaephllus surinan 



Dark reddish brov.Ti. Readily distinguished 

 teeth on m.argin of thorax. A pest of stored 

 and dried fruit. Length about 2.5 mm. (From 



by 



grain 

 U.S.D.A.) 



Fif^ire 1^1 



Lost of the m.embers of this family live under bark 

 and as would be suspected, are very much flattened. 

 Brovm seems to be the prevailing color, though one Is 

 bright red and several are attractively marked. Some 

 of our Iowa species are a half inch or more in length 

 but m.ost of them are much smaller. 



32b Front and middle coxal cavities closed behind. Body convex 



or cylindrical. (The Pleasing Fungus Beetles) Fig. 122 



Fami ly 73, EROTYLIDAE 



67 



