Other Leaf-Rollers 
Three Apoderi and no more figure in the 
European fauna. The best-known is that 
of the hazel. This is the one to whom I 
propose to devote my attention. I find her 
here, not on the hazel, her lawful domain, 
but on the common alder. This change in 
her activities deserves a brief investigation. 
My district does not suit the hazel very 
well; the climate is unfavourable, being too 
hot and dry. On the high slopes of Mont 
Ventoux it grows sparsely; in the plain, 
except in the gardens where a few find a 
footing, they are no longer to be seen. In 
the absence of the fostering bush, the insect, 
without becoming impossible, is at least 
extremely rare. 
Long though I have been beating the 
brambles of my countryside over an umbrella 
held upside down, here is our Apoderus for 
the first time. For three springs in suc- 
cession I see the red Weevil on the alder and 
observe her work. One tree, one alone and 
always the same, in the osier-beds of the 
Aygues provides me with this leaf-roller, 
whom I now for the first time see alive. 
The other alders round about have not a 
trace of her, though they are only a few 
177 
