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Psyche 7:91-92, 1894.

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May 1894.1 PSYCHE 9 1
PREPARATORY STAGES OF PSEUDOHAZIS SHASTAENSIS BEHRENS.
BY HARRISON G. DYAR, NEW YORK.
PSEUDOHAZIS SIIASTAKTSIS Behrens.*
1880-Behi-ens, No. Am. ent., i, 62.
var. DENUDATA Neumoegen.
18gi-Neum., Can. ent., xviii, 14';.
I have received the eggs of this species from Mrs. S. J. Kidder, who has very kindly taken the trouble to find them and forward them to me in good condition. They were
received in the fall of 1892 and hatched on May 11th following.
Eggs -Deposited in a ring shaped mass
around a leaf stem or twig, without covering. Oval, flattened at the sides, round on the base, but flat on top, forming a distinct, ellip- tical area, slightly depressed centrally at the micropyle. Smooth, shining, pale brown,
covered with a white pigment below and on the narrower sides and forming a distinct ring around the top surface, inside of which is a dark brown border. Height 1.8 mm.;
broad diameter centrally 1.6 mm., at top 1.1 mm. ; narrow diameter centrally 0.8 mm., at top 0.7 mm. Duration of this stage through- out the hibernating period.
Larva, stage I.-Head round, bilobed,
shining black: antennae prominent; width 0.7-0.7; mm. Body dull black, feet reddish. Rows of modified processes, apparently
arranged as in the mature larva, but only three rows discernible. Row i very long, rather slender, the anterior ones distinctly furcate or trifid, each branch with a very long, minutely spinulose, pale seta, even longer than the shaft. The processes are -
-
*The common form of Pseudohazis with purplish fore wings has, strictly, never been described. Bois-
dud says of eglanterina "alae anticae albido-carneaeb' which appliesto the form described as arizonensis by Strecker. Behrens' shasfaefisis was described from very black examples of the purple winged form, so this name will obtain. The form is constant, and has as good right to specific recognition as any species in the genus.
shorter posteriorly, not furcate, though many bear two of the long setae. Row ii
shorter than i with a seta from the middle and one from apex. Row iii very short, but many of the tubercles bear two setae. Anal plate concolorous with anal feet. Duration of this stage 13 days.
Stage 11.-Head shining black, labrum
and bases of antennae paler; width 1.0-1.2 mm. Body black, the tips of the spines
straw colored. Processes very long, espe- cially on joints 2-4 dorsally, where they are 1.5 mm. long. The others are nearly as
long, but become gradually shorter posteri- orly. The processes bear about six branches and are furcate at tip, each branch bearing a single pale stiff hair, longer than the branch itself. The branches arise alternately. Anal plates three, large, black; one suranal, the others at base of each anal foot.
Stage 111.-Head depressed medially,
shining black, clypeus whitish; width 1.4- 1.8 mm. The characters of the mature larva are now first seen. Body black, the pro- cesses of row i with a short shaft on joints 4-12 and close set branches, each tipped with a short, black bristle or a long, pale seta. The branches are brownish yellow, contrast- ing with the body. The other processes
have a long, thick shaft and separated
branches as all did in the previous stage. Rather scant, pale hairs arise from the skin. Sfagc 1V.-Much as in the next stage, but darker, more shining, the body less hairy, and without any distinct lines. Width of head 2.2-3.3 mm.
Stage V.-Head rounded, median suture
deep in front, clypeal sutures double; many coarse pale hairs. Color shining black,
shaded with dull crimson on clypeus; width 3.7-4. j mm. Processes arranged as follows : row i subdorsal on joints 2-11, a single dorsal one on joints 12 and 13. none on anal Ps.\chr 7 091-92 (pro.1903). hfp //psyche aitclub org/7/7-WII.himl



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92 PSYCHE. [May 1894.
plate; row ii lateral, 011 joints 2-13; row iii substigmatal on joints 2-13; row iv above bases of legs on joints 2-4 and correspond- ingly on joints 5, 6, 11 and 13 anteriorly. There are three forms of the processes. The first, rohette-like, has a very short shaft with some 50 light brown quills with short black tips, which probably produce the strong
urticating effect, besides a few central black branches which bear long terminal hairs. This type is found in row i on joints 4-12. The second is intermediate. The shaft is long with brown quills arranged around the base and some 10 black spines with terminal hairs, branching irregularly from the shaft and usually forming a trifid or bifid apex. This type is found in row i on joints 2, 3 and 13 and in row ii on joints 2-13. In the third form there are no quills, the long shaft fur- nished with irregularly distributed, subradi- ate branches tipped by long hairs. The
branches are black; but many are partly or wholly light brown. This type is found in rows iii and iv. Three shining black, irreg- ularly indented, hairy anal plates and a large rounded quadrangular cervical shield, bearing the processes of rows i and ii on joint 2. Body black with faint subdorsal and lateral and broader substigmatal, sinuate lilac lines, or nearly immaculate. Hair from the skin white, not long, but quite abundant, giving a grayish appearance to the larva. Spiracles reddish white with a black line cen- trally. Claspers of abdominal feet tinged with dull crimson.
Cocoon,-Very
slight, composed of a few
threads drawing together loose material or, more commonly, none.
The larvae conceal
themselves, but do not enter the earth.
Pitpa.-Rounded conical, thickest through the thorax, tapering posteriorly. Cases
large and prominent, but very even and
closely packed.
Anterior end rounded ; pos-
terior end also rounded, much smaller. Seg- mental incisures abrupt, not deep, with little capability of motion.
Cremaster reduced to
a bunch of short hairs on a slight promi- nence, colored red-brown, curving outward. Surface finely granular.
Color dark mahog-
ony red, the cases a little paler.
Length 25
mm. ; width through thorax g mm., through abdomen at second moveable incisui-e 7 mm. Four incisures are well marked ; but the pos- terior one is scarcely moveable, being
coarsely punctured, while the others are smooth. Imago in about 50 days after pupa- tion.
Fcod plants.-Wild lilac (Ceanothus),
Manzanita (Arctostaphylos), etc. Fed in
confinement on cultivated cherry.
Larvae from Watsonville, California.
Others seen, but not bred, at Yosemite and Monterey, Cal. and Portland, Oregon.
The
larvae are gregarious till quite large.
A. SMITH & SONS, 121 NASSAU STREET, New York. MANEFACTURERS AND IMPORTERS OF
GOODS FOR ENTOMOLOGISTS,
Klaeger and Carlsbad Insect Pins, Setting Boards, Folding Nets, Locality and
FOLDING NET
Special Labels, Forceps, Sheet Cork, Etc. Other articles are being added, Send for List, JOHN AKHURST,
TAXIDERMIST AND DEALER IN ENTOMOLOGICAL SUPPLIES. Fine Carlsbader Insect Pins a spe-
cialty.
Price List sent on application.
78 Ashland Place,
IMPROVED ENTOMOLOGICAL FORCEPS.
BROOKLYN, N. Y.




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