Article beginning on page 86.
Psyche 5:86-87, 1888.

Full text (searchable PDF)
Durable link: http://psyche.entclub.org/5/5-086.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.

8 6 PSTCHE. [July-August 1888.
The larva moulted on 25 July, and
was 25 mm. long and of the same colois
and marks as before.
On 27 July faint lines of a reddish
color began to appear above the oblique
yellow lines.
On 30 July the larva was 44 mm.
long, and ate voraciously. The tips of
the feet had become red. The yellow
stripes on the. head had grown very
bright.
On 3 I July it moulted again, being 53
mm. long.
The mouth parts were black; the
yellow face-lines were edged with
black ; and the caudal horn had a black
line on each side instead of a yellow
line. Other marks as before.
On 2 August the colors had changed
somewhat.
The face-lines had become pale green
edged with black- rather faint - ; the
seven obliques were white edged above
with pinkish lilac ; the yellow horizon- tal line had gone from the first three
segments, and those segments, as well
as the lower half of all the others, were marked with tiny white dots, each en-
circled with black.
The props had a faint purplish tinge.
The spiracles were red.
The head had grown more round,
with a slight indentation on top - not
enough to call the head bifid.
On 4 August the larva was 62.5 mm.
long, and the marks were brighter.
The caudal horn was short in propor-
tion to the size of the caterpillar.
On 10 August the length of the larva
was 87.5. mm., and the marks were
uncl~tingecl.
On 12 August it began to be restless,
and on 13 August it went into the
ground during the night, but re-ap-
peared again on the 14tl1, though it ate nothing.
On 15 August it had gone into the
ground again, and 21 August it had
become a bright mahogany-colored
pupa, 37.5 mm. long, with a tongue-
case 3 mm. in length and lying close
against the pupa.
On 7 JLIII~, 1888, the pupa had
grown much darker and duller, and on
10 June, at about 8.30 A.M., a fine 9
emerged.
The larva was fed entirely on poplar.
I had netted a 8 imago in a field
near the poplar where I found this
larva, only a few days before, flying at almost noon, and feeding at kale blos-
soms.
THE. ARRANGEMENT OF THE NEW ENGLAND SPECIES OF THANAOS.
BY SAMUEL HUBBARD SCUDDER, CAMBRIDGE, MASS. An examination of the androconia brought to light some very curious facts,. concealed in the costal fold of the fore showing how closely related, as far as wing in the species of this genus has these scales are concerned, some of the Pwht 5 086-88 (pre.1903). hfp //psyche anclub org/5/5.0086 html



================================================================================

July-August 1888.1 PSYCHE. 87
species are to each other and how very
distinct some that were supposed to be
doubtfully separable. This has led to
some further examination of the eccen-
tric abdominal appendages of the males,
and to a new arrangement of the groups
proposed by Mr. Burgess and myself
(Proc. Bost. Soc. Nat. Hist., v. 13, p.
282-306, pi.) when we first described
these organs. The following table
brings out the more striking features
and arranges the New England species
in a more logical order than before.
Ausonius, a somewhat anomalous
species, is included in the list as found upon the confines of New England.
The only known specimen having been .
only partially examined (Mr. Lint-
ner kindly permitted me to remove
enough scales to study the more pro-
minent characteristics), such features
as it is only presumed to have in com-
mon with its nearest ally, are placed in brackets.
A. With subapical white spots on fore wings. Terminal hooks of upper organ of 8 genitalia separate; blades of clasps very long, especially on left side, when com- pared to the main body. Costal fold furnished with long pediform bristles, curving at base, but with no thread-tipped tapering scales, or apple-seed shaped scales, or twisted ribbons.
I.
Species of smaller size. Upper organ of $ genitalia without a crest; tooth of same reduced to a bristle ; basal process of left clasp*unarmed ; the blade very slender. Costal fold with many long rod-shaped scales ending in two minute points.
a. Processes of left clasp of 8 genitalia almost as slender as the blade.
The smaller boat-shaped scales of the
costal fold often no more than twice as long as broad. .. . .ZuciZizis. b. Processes of left clasp much broader than the blade. The smaller boat-shaped androconia rarely or never so short as above. ..... . ... .. . ..... . . .... .... .. .. . ..... . . .... fersius. 11. Species of larger size.
Upper organ with a distinct prickly
crest; tooth well developed ; basal process of left clasp armed with spinules ; the blade moderately slender. Costal fold with no 2-pronged rod-like scales and the different species of this group show no distinction in androconia.
a. Crest of upper organ of $ genitalia slightly elevated and bearing a vertical shield expanding apically ; lobe of right clasp dactylate, curving inward.. . . . . . . . . . . . . . . . . . .&venalis.



================================================================================

PSYCHE.
[ July-August 1888.
6. Crest strongly elevated and surn~ounted by a horse-shoe shaped ridge ; lobe of right clasp greatly expanded, ......................................... broadest apically.. horatius.
c. Crest forming a gibbous prickly protuberance ; lobe of right clasp greatly expanded, broadest basally.. ........ .terentius. B. With or without subapical spots. [Terminal hoolcs of upper organ separate] ; blade of clasps moderately long as compared to the main body. [Costal fold furnished with long pediforrn bristles, curving at base, and apple-seed shaped scales, but with no thread-tipped tapering scales nor twisted ribbons'].
a. With subapical spots. Right clasp with a slightly prominent median denticle ; beyond the bend moder- .......................................... ately produced.. martialis.
6. Without subapical spots. Right clasp with a somewhat prominent median denticle ; beyond the bend much ................................................. produced.. ausok.
C. No subapical spots.
Terminal hooks of upper organ consolidated and stout ; blades of clasps very short when compared with the main body. Costal fold furnished with thread-tipped tapering scales or twisted ribbons, but with no long pediform bristles, or apple-seed like scales, or 2-pronged rod-like scales.
a. Of moderate size. Blade of right clasp stout. Costal fold with twisted ribbon-like scales.. ........................ .%o. 6. Of small size. Blade of right clasp slender. Costal fold ........................
with thread-tipped tapering scales.. .icelus. THE USE OF TWO DOORS IN A TRAP-DOOR SPIDER'S NEST. BY GEORGE F. ATKINSON, COLUMBIA, S. C.
Certain of the species of Nemesz'a, the
tube. Mr. Moggridge supposed the
habits of which Mr. Moggridge studied.
use of the branch and
second door was
make two trap-doors to their nests, one
to afford the spider a means of escape
at the surface of ground at the upper end when pursued by an enemy. When
of the main tube, the other a short dis- chased into the main tube, the spider
tance below at the beginning of a branch would go into the branch and close the




================================================================================