54 PHILIPPINE AGRICULTURE 



is hardly any part of the Islands which is not sometimes 

 visited by these insects, in swarms. They eat the leaves 

 of plants, and so kill many crops, but are especial enemies 

 of rice. 



Wood Borers and Maize Moth. An insect belonging to 

 the group of wood borers, which make holes in the wood 



FlG. 37. Four stages in the complete metamorphosis of the coconut beetle; a, egg; 

 b, larva ; c , pupa ; d, adult 



of living trees, has done great injury to the coffee at 

 Lipa; it is called bagombong. The uang, or coconut 

 beetle, makes the great holes often seen in the upper 

 part of coconut trunks. It is also found in cane waste, 

 and other decaying vegetation, and in manure. Unless 

 all cane waste is burned or buried, coconuts and cane 

 should not be planted together. About Manila and in 

 some other parts of these islands there is a moth which 

 does great injury to maize. 



Larva the Destructive Stage. The maize moth, and 

 the uang and bagombong, are all insects having a 

 complete metamorphosis; that is, each insect, in the 

 course of its life, goes through four stages, namely: 



