OIL BEETLE. 



353 



337, Meloe angusticollis Say), the first larva being minute 

 and parasitic on bees, sucking their blood, while in the 



Fig. 337. Oil Beetle, a, first larva ; 5, second larva ; c, third larva ; d, pupa. 



second and third stages it feeds on the pollen mass designed 

 for the young bees. 



Fig. 338.- Stylops childreni, male, dorsal and side view. Much enlarged. 



The blister beetles (Lytta marginata) undergo a similar 

 series of transformations called a hypermetamorphosis. 



