Cambridge Entomological Club, 1874
PSYCHE

A Journal of Entomology

founded in 1874 by the Cambridge Entomological Club
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Article beginning on page 249.
Psyche 8:249-250, 1897.

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August 1898.1 PSYCHE. 249
SIX NEW OR LITTLE KNOWN LARVAE OF PTEROPHORIDAE. BY HARRISON G. DYAR, WASHINGTON, D. C.
Trichoftitus Zobidactylws Fitch. - Head
faintly brownish, retracted at the apex under joint 2; width $7 mm. Body shining green, semi-transparent ; no marks ; tracheal line faintly showing by transparency, dorsal
vessel darker. Warts rather few haired, i and ii united into a single wart, iii small, a single hair above and behind spiracle (iiia) iv and v united, vi and vii small ; a few short secondary hairs subventrally; all the hairs glandular and gummy, swollen at the tips even without a lens and often with drops along the shaft. The hairs are sordid white, sparse, and rise I mm, above the dorsum. A row of minute, impressed, black dorsal dots on joints 5 to 11.
Atthe bases of the several
hairs are brown rings, causing the warts to appear slightly discolored. In 8 larvae the sex-glands appear in joint 9, yellowish, not pronounced.
P&. Attached by the cremaster; with-
out winged elevations; green, vinous patch on segments 4-5 of abdomen. Head rough-
ened with coarse tubercles, vinous brown ; thorax obliquely truncate anteriorly,
rounded; hairs shorter and fewer than
in the larva, scarcely glandular. Length 8 mm.
On smooth leaved golden-rod (Solidago),
Van Cortlandt Park, New York City, May.
Oxypfihts tenutdaciylus Fitch. - Head
green, .7 mm. wide. Body pale green, with a faint sub-dorsal white band. Warts i and ii united, bearing about ten setae with simple ends ; iii with six setae ; a small wart behind it with two setae (iiia); iv+v with two
large setae and several small ones; a single seta behind this (iii b) ; vi with a distinct tubercle, but somewhat confused among the secondary hairs ; vii of three large setae with several shorter ones ; secondary hairs scat- tered over the body, and these as well as some shorter ones from the warts, have
swollen or cleft tips.
Pea. Slender, tapering behind, fastened
by the cremaster. A row of sub-dorsal tu- bercles bearing four spines in a fan-like ar- rangement, continued as a carinated ridge on the thorax. Thorax widened, the cases produced into a point along the abdomen. Two slight points above the eyes. Whitish green, cases more greenish. There are sev- eral spines on the thorax, and some fine, soft hairs on abdomen laterally. Another pupa was light purplish brown.
On the buds of blackberry (Rubus), Keene Valley, N. Y., June. Found with Butalis
tasilaris ZeIl., but more closely resembles the blackberry buds than this Tineid does. Pierophoms rtynchosiae n. sp.- Expanse
18 rnm. Head and thorax yellowish gray;
abdomen neatly lined with brown ; a medio- dorsal and six lines on each side; above, the first and third segments are tufted with white posteriorly; legs pale yellow, white towards the tips, narrowly lined with brown longi- tudinally. Fore-wings yellow-gray ; a small double black dot at base of fissure,and one half way between this and base; a minute dot towards apex of first lobe. Fringe pale, the outer third on fi~ st lobe black ; terminal part of fringe of second lobe blackish, basal part pale, cut by five black -wisps ; the fifth at apex. Hind wings blackish, a black dot at apex of each lobe; base of fringe of third feather whitish, contrasting.
Larva. Downy, pale green, with short
white hairs. Pale green, the body tapering a little posteriorly; no marks except a very faint, whitish subdorsal line along warts i and ii; warts small, i and ii separate, but somewhat approximate ; a small wart (iiia)



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PSYCHE. [August 18~8.
below and behind iii ; iv + v distinct with a small wart (iiih) behind; skin densely
covered with very short, white, club-tipped secondary hairs. Feet short.
On the young leaves of a trailing plant
(^Rkynchosia) at Miami, Fla. December,
Ptero-pko~us dZi0fi~ Fernald. -The moths both in color and the structure of the geni- talia correspond with Prof. Fernald's species rather than ivith P. komodactylus Wlk ; yet I doubt the specific distinctness of these forms. It is easy to understand the occurrence of two "plume" larvae on Eupuforium, as they have different habits; but there scarcely seems room for a third one. Kellicott's de- scription of hodactylus fits elliotii.
Larva.
Head pale, eye black; width 1.9
mm.
Body green, subdorsal and stigmata1
bands slender, whitish shades, the former along warts i and ii ; a waved lateral line, bent down behind tubercle iii and a narrow dorsal line. Hair long, white, rather abundant. No secondary hairs. Tubercles i and ii are dis- tinct, but contiguous, in line; a single hair (iiiaj behind and below iii; a small wart of two hairs (iii b) behind iv + v ; vi and vii several haired. Skin with sparse, minute, clear
granules. In the 8 the dorsum of joint9 is all diffusely yellowish.
Pit-pa. Fastened by cremaster, much re-
sembling the larva in appearance. Green
with the same marks as the larva; the 3' sex-glands visible. The cases reach to the middle of fourth abdominal segment, the leg cases to the seventh. The hairs are roughly arranged as in the larva, but the warts are diffuse, scattered, and there is a median dor- sal hair; the hairs are also shorter.
Exposed feeders on the young leaves of
Eu$ufori~n at Van Cortlandt Park, New
York City. May.
Pteyo'phorus eupuiorii Fernald. - Closely allied to the preceding, the warts arranged the same. Color the same, till the last stage when the dorsum becomes all suffused with reddish. The hairs are shorter than in P. elliofii and the dorsal ones are blackish in- stead of white.
There is a pale line along
warts iv +v. Hairs pointed, slightly bar- buled.
The larvae live on the under sides of the leaves which they bend together with webby silk.
On Epilobium, Van Cortlandt Park, New
York City.
Ptero$horus wetidactylus Fitch. - ~ e a d rounded, higher than wide, partly retracted ; green, ocelli black. Body a little thickest in the middle, uniform green with a whitish dorsal line. "Warts round, concolorous, i and ii near each other but separate, a small wart (iii a) below and behind iii ; another (iii b) behind iv + v, viand vii not large. Feet nor- mal, the abdominal ones slender, wider at the claspers,
P@ci suspended by the cremaster, slender; cases projecting over the abdomen half way to the tip. Uniformly green, covered with tutts of spaise radiating hairs, arranged roughly as in the larvae. Length 11 mm., width 2.5 mm. On aster*, Yosemite, Cal.
June.
Synopsis of larvae hem described.
Warts i and ii united; secondary hairs
present.
Hairs sticky glandular ; on Solidago
T. lobidactylus
Hairs not sticky ; on RII bus
0. tenaidactylits
Warts i and ii separate.
Secondary hairs present; on Rhynchosia
P. ~hpckosiae
No secondary hairs.
A waved subdorsal line below wart ii ;
on Eupatorium.
Hair long (3-3.5 mm.) exposed feeding
P. dliotii
Hair short (1.6-1.8 mm.) concealed
feeding P. eupaforii
No waved subdorsal line; on aster
Pi c~etidadylus
'This plant was not determined with certainty.



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