INSECTS INJURIOUS TO CEREALS 235 



The beetles, themselves, are apparently long-lived 

 insects, for Slingerland kept one of them alive and active 

 for nearly a year in the tumbler. Another observer kept 

 one alive for twenty-one months. 



The larvae of the Cadelle have been found in all sorts of 

 unexpected places and among various kinds of food-stuffs. 

 An instance is given in Insect Life in which a correspondent 

 sent in a larva which had been found in a bottle of milk. 

 Very likely, in this instance, the insect had crawled into 

 the empty bottle from near-by grain and had remained 

 there unnoticed when the bottle was filled. A far more 

 interesting occurrence of the beetles is that related by 

 Webster, in which he found two beetles that had tunneled 

 through a cork and burrowed into a quantity of white 

 hellebore. The beetles when found were dead, but they 

 had channeled the material in all directions, showing that 

 they had lived in the powder some time. The material, 

 however, was old and had lost much of its strength, al- 

 though later, when sifted upon gooseberry bushes, was 

 found strong enough to kill the imported currant- 

 worms. The larvae of the Cadelle have also been 

 found in one or two instances in sugar. Their presence 

 there was probably accidental. The beetles and the 

 larva? were found by Johnson boring through the 

 parchment paper of jars containing jams and jellies 

 imported from Liverpool, England. After the insects 

 had tunneled through the paper they fed upon the 

 surface of the preserves. 



Miss Ormerod found the larvae feeding upon the larvae 

 of the rust-red flour-beetles. The injury done to cereals 

 by the Cadelle is somewhat counterbalanced by its 

 predaceous habits. 



