178 ECONOMIC ENTOMOLOGY 



spot on the fore wings, and six spots on sides of abdomen instead of five. 

 The larva has only seven oblique markings instead of eight V-shaped 

 ones. 



Plum Sphinx {Sphinx driipijerarum Sm. and Abb.). Adult. — Ex- 

 pands 3 to 4 inches; body brown, wings purplish brown; fore wings with 

 a whitish stripe on costal margin, a fawn colored stripe on outer 

 margin and several black streaks; hind wings with two whitish wavy 

 and an outer fawn colored stripe. June. 



Eggs. — Laid singly on the leaves of plum; smooth, oval, j^fs inch 

 long; pale yellowish-green. Hatch in 8 days. 



Larva. — ^Three and one-half inches long, apple-green, with dark- 

 brown lateral stripe. On each side are seven oblique white bands. 

 Feeds on plum leaves. 



Pupa. — Reddish-brown, 1^2 inches long, with a short tongue case; 

 in ground all winter. 



Grapevine Sphinx {Ampeloeca myron Cram.). Adult. — Expands 

 2}/i inches; fore wings olive-grey with a curved oblique greenish-grey 

 band, a discal point and a triangular spot. Body green. Two broods 

 — June and August. 



Eggs. — Round, \'2q inch in diameter; yellowish-green. 



Larva. — A "Hog Caterpillar," green with yellow dots; oblique yel- 

 lowish stripes along sides; a white stripe with green margin from head 

 to horn and seven pink spots along the middle; 2 inches long. Spine 

 near tip of abdomen. Feeds on leaves of grape and Virginia creeper. 

 Often infested with braconid parasites. 



Pupa. — Formed in a loose cocoon of silk, spun under leaves at the 

 surface of the ground. 



White-lined Sphinx (Celerio lineata Fab.). Adult. — Body and fore 

 wings olive-brown; thorax with three parallel lateral white stripes; 

 fore wings with a buff stripe from inner margin to apex; hind wings 

 black with a reddish middle band. Probably two-brooded adults 

 appearing in June and September. 



Larva. — About 3}-^ inches long; color variable, yellowish-green with 

 black spots or black with yellowish spots, with horn at tip of abdomen. 

 Feeds on grape, apple, plum and on purslane, chickweed, etc. 



Pupa. — ^Light brown pupa formed in a smooth cavity in the ground. 



Other common Hawk Moths are: Abbott's Sphinx (Sphecodina 

 abboUi), Apple Sphinx {Sphinx gordius), Achemon Sphinx {Pholus 



