LAMELLICORN-BEETLES. 89 



Other species are covered with a very fine pubescence, al- 

 most entirely hiding the wing-covers ; others have longer hairs 

 arranged in parallel rows upon the elytra"; but all have such a 

 familiar look, that the illustrations given will convey a good idea 

 of the appearance of nearly all. 



With us the beetles emerge from the ground just alt dusk, or 

 soon afterwards, and they leave the trees long before sunrise, so 

 that the beating of the trees even very early in the morning will 

 secure but a very few, hence does not amount Ito much as a 

 remedy. But as such insects can be attracted to light, immense 



Fig. 97. — Lamp trap. After Lintner. 



numbers can be captured and killed by placing under a strong 

 light a vessel containing water with some kerosene floating on it. 

 (Fig. 97). If we study the captured beetles, we find that in 

 some cases only the males of some species have been caught ; 

 again we find both sexes in about equal numbers, and in some 

 few cases mainly females are attracted. But whether the fe- 

 males have already deposited their eggs or not is a question, and 

 it is also doubtful whether we do much good by so attracting 

 them. It seems to the writer that the strong light not alone at- 



