Cambridge Entomological Club, 1874

A Journal of Entomology

founded in 1874 by the Cambridge Entomological Club
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This is the CEC archive of Psyche through 2000. Psyche is now published by Hindawi Publishing.

Harrison G. Dyar.
Life Histories of North American Geometridae.—LVI.
Psyche 11(5):105, 1904.

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iwer half of front,
, proboscis black,
h three indistinct,
gments yellowish.
ings hyaline, third
I lines. Occiput,
ish black, anterior
ler sides of joints
half black, apical
td very indistinct,
1 brownish black,
nora, and middle
hyaline. Length
line, and October.
Kirkland's article
ie finding of this
it may interest the
spring, illustrating
trgess found it in
iccimen in I 899 in
) the northwestern
liaa Poplars) from
@/. 20, 1904.
Scittgraphia graniiata Guen6e. A mature larva was descr (Ent. news, v, 6.3, 1%;;) under the determination of the lat 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 gm~data. Eggs were obtained from captive females at Kaslo, British Cohiinbia. The larvae fed on spruce, choosing the needles of the previous 'year which they closely matched by their dark bluish green color.
Ssy. Elliptical, rounded, the ends very nearly alike, no distinct truncation ; well fiat- 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 dap.
Siay I. Head bilobed, full, sutures depressed, bright orange, shining- Body moderate, a little flattened, normal; pale yellow, tranelucent, green from the food, no markings; anal feet project laterally, segments -coarsely annulate; tubercles elevated, concolorous; setae pale, rather short, capitate.
Stage 11. Head luteous, eve black, mouth brown ; width .5 mm. Body moderate, rather stout, sordid green, the dorsum with very fine, obscure, grayish olivaceous longitudinal -
lines; a broad stigmata1 whitish band, not contrusted; venter lined like the dorsum ; feet blackish except ths anal pair. Tubercles small, blackish ; setae short, dark. Stup III.
Head rounded, flat before, a little higher than joint 3, whitish luteous, the ' sutures dark : width .8 mm.
Body moderate, not elongate, blackish green with a broad white sitgmatal 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, -
Stage IV. Head smoothly rounded, clypeus level, luteous green, a broad smoky black band at sides above, brownish before eyes ; ocdi in a whitish field, labium blackish shaded: - -r
width r 2 mm.
Body moderate, not elongated, feet normal ; dark green, heavily shaded with blackish. Dorsal and stibdorsal lines narrow, whitish, the sides more heaviiy biack shaded ; .stigmata1 line broad, white,diffusely edged ; illy defined pie subventral and (nedio- ventral lines, both narrow. Feet blackish ; tubercles small. dark, obscure; setae dusky. Shgv 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 stigmata! 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.
Tubercies concolorous, obsolete, setae rather long, black. Later olivaceous blackish spots show distinctly on joints 6 to 8 in the ~ubstigmatal band. The larvae entered earth to pupate early in July; no moths emerged.


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