Article beginning on page 94.
Psyche 8:94, 1897.
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PSYCHE.
from.
It is characterized by having
the front reddish-yellow with vertex
brown, the legs brown, abdomen with
no yellowish or reddish except at tip,
three thoracic lines, and the black
median pair of abdominal stripes
pronounced.
The present specimen has the median
thoracic line more pronounced than in
the variety &ominale, but still nar-
rower than the outer ones. The pollen
of fourth, fifth, and sixth segments as- sumes a strong golden hue, especially
when viewed obliquely from in front.
Fifth and sixth segments and base of
seventh reddish-yellow under the
pollen. The median abdominal stripes
are deep black ; they fonn two widened
subsquare markings on second segment,
two broad lines on third, and two nar-
row lines on fourth. Thy are widened
at hind margin on second and third seg-
ments. Very- few dots present in the
pollen of abdomen. These in the main
are the characters of the typical form.
All the other specimens that I have
taken in New Mexico (Mesilla Valley,
Organ Mts., Tularosa Plains) are var.
abdominale (3800-j500 ft.). The pres-
ent is the only one of the typical form
taken, and it comes from about 7000 ft.
elevation. (See paper on DipL Organ
Mts. for notes on var. abdominale.)
N. B.- By mistake the species given
in section I of this paper were not
numbered. They include numbers I
to 6. Those in this section are num-
bered from 7 on,
TWO FORMS OF FLUTED SCALE. very nearly, though not entirely, with UP to the present the famous Fluted Scale (Icerye jurckasi Maskell) of California has been regarded as a single species, without any important variations.
I was therefore
surprised to learn from Mr. Alex. Craw that over six years ago he had noticed that
there were two distinct forms, and that his subsequent experience had shown him that they remained distinct, and did not depend on location or food-plant. Mr. Craw has
been so good as to send me living adult
females of the two varieties, and they can be readily distinguished as follows : -
(I.) var. maskelii.
Female (after forming
ovisac) slate grey or very dark purplish-grey, sometimes brownish in the middle, with
marginal dull orange spots. Back little
covered by secretion. More hairy at the
cephalic end tham the next.
Ovisac not so
large as in the next; tinged with yellow just behind the body of the insect.
Mr. Craw
says this is the form they had in Los Angeles. It is purchasi in the strict sense, and agrees Maskell's description.
(2.) var. crawii.
Female (after forming
ovisac) light pinkish or yellowish-red, the margin orange, with bunches of short black bristles. The back is largely covered with yellowish-whitc secretion. Ovisac some-
what larger and longer. Legs somewhat
smaller, femora decidedly more slender.
This may prove to be a distinct species, hut the larval and adult characters, except those mentioned, agree so well with purc/iasi that it seems best to give it only varietal rank. Both forms were sent on Citrus; the
precise locality not stated.
Mr. Craw says :
"When I sent two large boxes of infested branches from Lodi to San Gabriel to stock the two large glass breeding houses for
Yedalia cardinalis that the State Board
erected there, I saw that the light colored scale [i. e. var. cra~,vii\ retained its characters there on the orange trees."
T. D. A. Cockerell,
MesilSa, N. Af., May 30, 1897.
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