1 904 ] DYAR:— NOR TH A M ERICA N GE OME TRIDAE I O 5 



LIFE HISTORIES OF NORTH AMERICAN GEOMETRIDAE.— LVI. 



BY HARRISON G. DYAR, WASHINGTON, D. C. 



Sciagra-phia granitata Guen6e. A mature larva was described bj me as this species 

 (Ent. news, v, 63, 1895) under the determination of the late Dr. Hulst. This is apparently an 

 error, but I cannot now find the specimen on which Dr. Hulst made the determination. It 

 does not appear in the National Museum series of granitata. 



Eggs were obtained from captive females at Kaslo, British Columbia. The larvae fed 

 on spruce, choosing the needles of the previous year which they closely matched by their 

 dark bluish green color. 



Egg. Elliptical, rounded, the ends very nearly alike, no distinct truncation ; well flat- 

 tened but without any flat areas; reticulations coarse, distinct, raised, hexagonal, the cell 

 areas concave, resembling a thimble, about alike all over. Sordid bluish green ; size .8 X -6 

 X -4 mm. Hatched in six days. 



Stage I. Head bilobed, full, sutures depressed, bright orange, shining. Body moderate, 

 a little flattened, normal; pale yellow, translucent, green from the food, no markings ; anal 

 feet project laterally, segments coarsely annulate; tubercles elevated, concolorous; setae 

 pale, rather short, capitate. 



Stage II. Head luteous, eye black, mouth brown ; width .5 mm. Body moderate, 

 rather stout, sordid green, the dorsum with very fine, obscure, grayish olivaceous longitudinal 

 lines; abroad stigmatal whitish band, not contrasted; venter lined like the dorsum ; feet 

 blackish except the anal pair. Tubercles small, blackish ; setae short, dark. 



Stage III. Head rounded, flat before, a little higher than joint 2, whitish luteous, the 

 sutures dark : width .8 mm. Body moderate, not elongate, blackish green with a broad 

 white stigmatal stripe. Ground color olivaceous with blackish dotted geminate dorsal, sub- 

 dorsal, lateral, substigmatal, subventral and medioventral lines. Thoracic feet blackish, the 

 abdominal ones olivaceous. Tubercles small, black, in pale rings ; setae rather long, 

 dusky. 



Stage IV. Head smoothly rounded, clj'peus level, luteous green, a broad smokv black 

 band at sides above, brownish before eyes ; ocelli in a whitish field, labium blackish shaded; 

 width 1.2 mm. Body moderate, not elongated, feet normal; dark green, heavily shaded 

 with blackish. Dorsal and subdorsal lines narrow, whitish, the sides more heavily black 

 shaded; stigmatal line broad, white, diffusely edged; illy defined pale subventral and medio- 

 ventral lines, both narrow. Feet blackish ; tubercles small, dark, obscure ; setae dusky. 



Stage V. Head rounded, slightly bilobed, clypeus level, broad; shining bluish green 

 with a very broad band of black on the sides of the lobes, a little checkered in brown on its 

 edges ; width 1.8 mm. Body cylindrical, moderate, normal, smooth ; bluish green like the 

 old spruce needles, shaded with white ; a white addorsal border to the dorsal vessel ; white 

 subdorsal lines, faint at the ends, both greenish white, not contrasted ; an irregularly mottled 

 triplicate black lateral band, touching the lower edge of the subdorsal line, not reaching the 

 faint white, diffuse stigmatal line. A similar, less distinct triplicate subventral band, touch- 

 ing a faint white, ventral line. Thoracic feet brown, those of joint 10 green, of joint 13 

 black shaded. Tubercles concolorous, obsolete, setae rather long, black. Later olivaceous 

 blackish spots show distinctly on joints 6 to 8 in the substigmatal band. 



The larvae entered earth to pupate early in July: no moths emerged. 



