Article beginning on page 226.
Psyche 9:226, 1900.
Full text (searchable PDF)
Durable link: http://psyche.entclub.org/9/9-226.html
The following unprocessed text is extracted from the PDF file, and is likely to be both incomplete and full of errors. Please consult the PDF file for the complete article.
female without being attracted in this
less passive, flying about in as much
way.
excitement as the males, and vibrating
Females of Sam& cynthia, do not their wings faster and faster when not protrude the ovipositor as much as do
flying, quivering all over, and waving
the other Attacine moths, and are far
their wings in a peculiar manner.
LIFE HISTORIES OF NORTH AMERICAN GE0METRIDAE.-XXIII BY HARRISON G. DYAR, WASHINGTON, D. C.
Xanthutyfe crocatai-ia Fab. The larva
and pupa of this species have been described by Packard, Bowles, French and Forbes, but no complete life-history has been given. Egg.
Laid in patches of six to twenty.
Elliptical, flattened, concave on two sides but rounded, wedge shaped from side view, the thick end flattened, subtruncate; shagreened by a minute granulation and with traces of hexagonal reticulations which are indicated only, chiefly by the minute bordering pores which appealhas white specks in certain
lights. Shining light green. Size -7 X .5 X .3 mm. Later turning rather dark red.
Stage I.
Head rounded, slightly bilobed,
pale brownish ocherous, a narrow dark line on the posterior angles, not shining, ocelli black; width .3 mm. Body moderate,
normal ; white, subdorsal and medioventral purple-brown bands, moderate, straight,
reaching from joint 2 to 13, the subdorsals a little divergent on joints 2 and 13. Tubercles and setae minute, dark, inconspicuous. Feet pale outwardly; segments faintly annulate, uniform, incisures not marked. Shields&
concolorous, not cornified. On eating, the color became greenish from the food show- ing by transparency.
Stage II.
Head erect, rather higher than
wide but not above joint 2, pale luteow with a blackish stripe on each side across occlli to near vertex, behind which the color is whit- ish; width .55 mm. Body normal, a little flattened. Uorsum whitibh green, a broad red-brown subdorsal stripe, divergent on joints 2 and 13 to the anal feet; sides green, whitish on subventral fold;
a ventral stripe
like the subdorsal but single, reaching from the head to joint 13. Feet pale; skin smooth. Stage 111.
Head rounded, somewhat flat-
tened before and held obliquely dat; pale greenish, obscurelj white stieaked vei tically, the rather large antennae and a btripe on the sides bearing ocelli white, the stripe faintly dark edged befoi e; ocelli black; width .9 mm. Body moderate, normal, ii little flatten- ed; anal plate slightly pointed, anal feet ti iangulai, excavate behind with anal piongs which equal the plate. Light green, four white lines in the dorsum ; a subdorsal (or rather lateral) band of smoky brown, fainter than before; a greenish white *tripe on the subventral told; subventer faintly white lined, the brown \entral stripe like the sub- dorsal in color. Feet pale, tubercles and setae small.
Stave IV. Head rounded, squarish, flat-
tened but convex in front, antennae large; held out quite flat; whitish with green tint, obscurely mottled brighter on the sides, a blackish band on the lateral angle forming a bend at antennae to moulh, crossing ocdli ;
================================================================================
width 1.2 mm. .Body moderately slender,
smooth, subventral fold prominent. Whitish green, dorsum with four narrow white lines ; lateral band blackish, geminate, reaching joints 2 and
13, but not continued on the
anal foot; subventral fold yellowish white, two while lines in the subventral space. Ventral band blackish brown, composed of four fine lines united bv a shading. Thoracic feet brown dotted; abdominal foot of joint 10 lined before and behind, that of 13 with lriangulay plate produced above into a prong. Anal plate triangular, pointed. Spiracles black ringed, that of joint 2 the largest. Tubercles small, ii slightly larger, blackish. Setae short, stiff, dubky.
Staye V. Ileacl as before, faintly longi- tudinally streaked with white; lateriil band mottled, red-brown, cdgcd with while behind; width 1.9 mm. Body elongate, uniformly
yellowish opaque green, shading to whitish green on joints 2 and 13 ; a faint, more trans- parent and darker vascular dorsal line show- ing espccialiy as V-marks between tubercles ii, the point on the posterior edge of tlic seginent. A sligi~tly more opaque subdorsal line below tubercle ii; lateral band reddish brown, obscurely triplicate, nearly obsolete except at the ends, where, especially on joints 10 to 13, it forms a broad diffuse shade; ventral band separated into four lines and obscure, except on the thorax between the feet, red-brown. Spii-aclea white, black edged except on the bottom. Thoracic feet appressed, green, brown dotted. Foot of
joint 10 brown bordered. Subventral fold lighter, white posteriorly, running' narrowly on the lower part of anal foot. Anal prongs exceeding the triangular plate. There is occasion all^ a hrown form of the larva
which is, similar but head and all shaded with vinous brown, darkest in the dorsal \'-marks, subdorsal line an'd ventral region, the pale band on subventral fold contrasted. Cocoon. Lc;+ves spun together and united by a moderate amount of whitish silk.
Pupa, Bright green, somewhat transpar-
enL, the abdomen with a whitish green depos- it beneath, leaving a dark green vascular dorsal line. Spiracles, eyes and a small semicircular raised disk on each side of the prothorax beliind black. Knd segment and cremahter niso black, the latter a thick cone, densely punctured with a group of recurved hooks at the tip. The. last segment is sharply wider thnn the cremaster and its upper edge is roundedl? serrate. Surface smooth and shining.
Fuodpluniy variouh. Thebe larvae kd on
several species of Polygonmn. Double
brooded, the second brood hibernating in about the penultirnate htage (Ent. News, V, 62) and prohahly having more than five
&Loges as here recorded for the Spring brood. Larvae from Washington, D. C.
HEMIPTKRA ox VILRI~ASCUM-IL is always
interesting to examine introduced plants,and sce vi-hiit native insects have succeeded in ntilizing them for FUCK! or shelter. Last Jul? at Las Veps Hot Springs, I\-, M., I found the European Verbascam tha-psus growing
plentifully, and three species of I-Ierniptcra very much at home upon it. These latt~r
nivc bee^^ submitted to Mr. E. 11. Ball. who identifies them ;is Tfiya-nta wsiator Fabr., Neides m.iificm Sa>-, and ^yo',/? ^fii/msi.s L. T. D. A. Cockerel!.
================================================================================
Volume 9 table of contents