5 I 8 NEW YORK STATE MUSEUM 



period. The beetles eat the buds and gnaw into the twigs chiefly at the 

 base, thus causing them to break and fall. They also feed on the younger 

 bark of twigs, eating numerous holes into it, the tender shoots being 

 entirely devoured, and later they may feed on the base of leaves. It is a 

 nocturnal species and consequently escapes observation to a large extent. 

 The larvae are found in the twigs and tender branches of oak and hickory, 

 and according to Saunders, the female makes a longitudinal excavation 

 with her jaws for the reception of the eggs. The larva is a soft, footless, 

 pale yellow grub with a tawny head. 



Agrilus otiosus Say has been taken from ash, oak and butternut foliage. 



Anthaxia quercata Fabr. was taken on leaves of scrub oak at Karner 

 July 23, 1902. 



Cistela sericea Say occurs on basswood the latter part of June on oak 

 and also on pine. 



Glyptoscelis barbata Say was taken on hickory and oak at Poughkeepsie 

 in May and June 1903. 



Rhynchites bicolor Fabr. is common on scrub oak at Karner. 



Walnut sphinx 



Cressonia jaglandis Abb. & Sm. 

 A stout, light apple-green caterpillar with a prominent horn at its posterior extrem- 

 ity, and ornamented with seven oblique white stripes on each side, feeds on the leaves of 

 hickory, black walnut, ironwood and has been reported as occurring on wild cherry. 



The parent insect is a modestly colored, yellowish brown hawk moth 

 having a wing spread of about 2^ inches. The fore wings bear a 

 nearly straight, oblique, light brown line at the basal third, and near the 

 outer edge there are three slightly undulating, light brown lines. These 

 latter markings are slightly more developed on the posterior wings. The 

 young larva is yellowish green. The head is truncate in front, conic, the 

 apex of the cone bearing two rough, brownish projections. There is a 

 yellowish strip on each side of the head and the lateral streaks on the body 

 are very indistinct. The caudal horn is rough, pinkish at the base and has 

 black points on the surface. The full grown larva tapers from the seventh 



