Life Histories of North American Geometridae.—XLII
International Journal of
3/[etrocama raegranctaria Guende.
Effff. Elliptical, thick, one diameter less, evenly rounded, the ends nearly alike, no depression or truncation. Laid in small groups, erect on the antemicropylar end, strongly adherent. Reticulations regularly hexagonal, small, narrow, obscure, not raised; on the large sides there is an indication of ribbing in that the reticulations are re.ore longitudinally placed ends smoother. Yellow, turning red. Size .8 X .6 )< .55 ram. Hatched in II days. Stage L Head round, bilobed, pale brown, sutures darker; width about .4 mm. Body short, rather robust, subventral fold widened a little segmentarily. Pale yellowish, a broad darsal, narrow linear subdorsal and substigmatal dark red lines; a row of subventral red spots on joints 5 to 9. The lines do not quite reach the ends and are somewhat broken in the annulet folds. Cervical shield large, but concolorous. Tubercles small, brownish. Setae distinct, pale, moderate, scarcely enlarged at the tips. Abdominal feet on joints Io and I3 only.
NORTH
AMERICAN
GEOMETRIDAE.--XLIII.
Stage II. Head bilobed, luteous, immaculate; width .6 mm.. Body moderate, pale
green, dorsal line broad, subdorsal narrow, lateral clouded, substigmatal and traces of
subventral lines all vinous brown, ghe latter three obscurely joined by large clouded patches on
joints 5 to 9. tVeet pale; tubercles obsolete; setae short, obscure.
Slaage III. Head rounded, bilobed, dull luteous with distinct brown dots behind the
eyes and faint ones in the vertical suture width .9 mm. Body moderate, uniform, segments
irregularly annulate; yellow luteous, dorsal line narrow, dark brown, broadly edged with
light brown, subdorsal and lateral lines dark brown, the latter joined by large segmentary
spots to upper and lower subventral lines, shaded on joinfs o- 3. Feet pale; tubercles
small, slightly raised; setae sliort, dusky.
Stage ZV. Head pale greenish.brown, finely dotted with dark over the lobes except a
streak on the vertex of each width mm. Body moderately elongate, feet of joints o and
3 remote and a small pair of feet on joint 9, the feet approximate segments wrinkly,
irregularly annulate, uniform, smooth. Olivaceous yellowish, shaded with brown. Dorsal line
dark brown in a lighter brown cloud; subdorsal, lateral, and stigmatal lines narrow, light,
indicated by clouded brown edges; a distinct substigmatal line and subventral spots of dark
brown. Feet pale, the anal ones projecting laterally. Tubercles concolorous, with dark hair
dots; setae fine, pale; in the subventral region some pale secondary root-like prominences
are mixed with ghe longer setae of tubercles vi and vii. (These prominences are not present
in stage III and the extra feet are barely indicated.) The intersegrnent of joints 7-8 is more
darkly shaded; dorsal tubercles more or less brown marked. The larvae rest fiat on the
bark.
Stage V. Head bilobed, thick, greenish white with numerous angular black spots
composed of dots which are larger in a curved band from ocelli to before vertex, framing the
face width 1.8 ram. Body moderate, flattened ventrally, with a series of white rootlets along
the subventral edge feet on joints 9, IO, and 13, those of joint 9 small, but used. Bark brown,
wrinkly, dorsal line dark, subdorsal, lateral and two subventral lines pale, fine, all obscure;
subdorsal dark intersegmental blotches, especially centrally, darkest on the intersegment
i9o3]
D YAR :--_/VO TH AMERZCA./V GEOME TRIDAE
7-8. Venter pale; no secondary hairs, the primary ones of tubercle vii sctttered among the
rootlets. Feet all pale greenish.
Spun a slight cocoon. One moth emerged the same season, but most hibernated
in the pupal stage, making the species normally single brooded. Larvae from
Kaslo, British Columbia; they fed on the leaves of white birch.
LIFE HISTORIES
OF
NORTH
AMERICAN
GEOMETRIDAE.--XLIV.
BY HARRISON G. DYAR WASHINGTON. D. C, ll/[esoleuca gratulata Walker.
Egg. Elliptical, thick, the antemicropylar end strongly depressed, top and bottom
concavely flattened medially, micropylar end flattened. Rather coarsely wrinkly shagreened
all over except on the side of attachment, no reticulations. Uniformly pale yellow. Size
.8 X ’7 X .5 ram.
Stage I. Head cordate, black, the color diluted centrally, the pointed mouth brown.
Body normal, moderately elongated; all pale yellow, tubercles small, blackish, a little raised
cervical shield dusky luteous, obscure; setae distinct, rather long, dusky, glandular tipped.
Stage I[. Head bilobed, pale yellow, eye black, mouth brown. Body moderate, green,
roughened by the tubercles and annulets, translucent, unmarked; tubercles slightly raised,
concolorous feet green setae pale, distinct feet of joints Io and I3 rather remote.
Stage II[. Head rather long, slightly bilobed, pale testaceous, eye black, mouth
brown; width .9 ram. Body translucent green, no shields, a narrow, broken, white
subdorsal line, a faint white shade each side o (...truncated)