THE MOUNT DESERT EEGIOX 165 



Attelabus Linnaeus. Leaf -rolling weevils 



A. BiPusTULATus Fab. (16367). This species rolls the leaves 

 of oak. Bar Harbor beating June 16. Rare. 



A. RHois Boh. (16369). Occurs on hazelnut and alder. As 

 described by Packard, the singTilar, thimble-like rolls of 

 this weevil may be found in June and July on the alder. 

 When about to lay her eggs, the female begins to eat a slit 

 near the base of the leaf on each side of the midrib, and at 

 right angles to it, so that the leaf may be folded together. 

 Before beginning to roll up the leaf she gnaws the stem 

 nearly off, so that after the roll is made, and has dried for 

 perhaps a day, it is easily detached by the wind and falls 

 to the ground. When folding the leaf, she tightly rolls it 

 up, neatly tucking in the ends, until a compact cylindrical 

 solid mass of vegetation is formed. Before the leaf is 

 entirely rolled she deposits a single egg, rarely two, in the 

 middle next to the midrib, where it lies loosely in a little 

 cavity. These rolls remain on the bushes sometimes for 

 several days, but probably drop by the time the larva 

 escapes from the egg, and it seems probable that the grub 

 uses the roll for a shelter until it matures and is ready to 

 enter on its transformation to a beetle. Common on alder. 



Apion Herbst 



A. FiNiTiMUM Fall (16380). Seal Cove Brook sweeping wild 



carrot and ferns, Aug. 7, '35 ; Station F214. 

 A. pennsylvanicum Boh. (16392). Narrows, Aug. 3, sweeping. 

 A. WALSHi Sm. (16423). Recorded as occurring on white birch 



and in the galls of a A\dllow. S. W. Harbor ; Bar Harbor ; 



Long Pond, July 15-Sept. 7. 



POLYDRUSUS Germar 



P. iMPREssiPEONS Gyll. (16622). Bar Harbor, June 11- Aug. 10. 



HoRMORUS Horn 



H. UNDULATus (Uhler) (16635). General sweeping best way 



with these. Seal Harbor (Stowell), Aug. 9. Not common.^„^« • z^ --^ 



