Article beginning on page 187.
Psyche 9:187-188, 1900.

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PSYCHE.
THE SPECIES OF DIAPHEROMERA (PHASMIDAE) FOUND IN THE UNITED STATES AND CANADA.
BY SAMUEL H. SCUDDER, CAMBRIDGE, MASS.
The common " walking stick " of the
oak bushes of the northern United States, D, fonorata (Say), was the only species
known to Gray, when in 1835 he founded
this genus.
It was not until 1864 that a
second, intimately allied, species was
added by Walsh, and since 1875, when
a third much larger species was described by StAl, no further additions have been
made. From rather meagre material in
my collection I can now add two other
species, one from North Carolina, the
other from New Mexico. No species
appears to occur west of the continental divide. I subjoin a table for the easy
separation of the species, basccl princi- pally on the male sex.
Table of the United States species of Diapheromera. al. Male cerci more or less, generally conspicuously, arcuate. b1.
Larger and stouter form ; under side of middle and hind femora distinctly spined throughout; male cerci much broader apically than at base, more or less spatulate. . . denticrns .
P. Smaller and slenderer forms ; middle and hind femora without conspicuous spines beneath, excepting the subapical spine ; male cerci subequal throughout. fi. Ninth abdominal segment of male apically inflated, and here nearly half as broad again as at base, the seventh and eighth segments of subequal length . carolina,
c2. Ninth abdominal segment of male subequal, scarcely larger at apex than at base, the seventh segment much longer than the eighth. dl.
Male cerci with a blunt tooth at inner inferior base; female cerci relatively stout, about half as long as last dorsal segment fernof-ata.
d2.
Male cerci with a sharp thorn at inner inferior base; female cerci relatively slender, almost or quite as long as last dorsal segment . . veliei.
&, Male cerci rigidly straight . . mesillana,. Diapheromera denticrus.
Originally described from Opelousas,
La. My specimens all come from
Diajherotnera denticrns St&], Rec. Texas (Belfrage) , New Braunfels, Tex. Orth., iii, 76 (1875). {Lincecum), and the Gulf coast of



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188 J'S 1'CI-1.E. April, iqo
Texas (Aaron), excepting a small fe-
male from Las Cruces, N. Mex. (Cock-
erell). It is perhaps this species to
which Gosse alludes (Lett. Alab., 275)
as the larger of two species found in
Alabama. It varies somewhat in size,
two males before me being respectively
go and 125 nun. in length. The species
is figured of half natural length in Har- per's Magazine, vol. Ixxxviii, p. 457.
Diapheromera carolina sp. nov.
8.
Stouter than D. fa~iorata. lestaceo-
casfcancous, glistening, the thorax with a rather broad median bronze-fuscous strip, not reaching the median segment, and inter- rupted at the posterior end of the mesono- turn, the fore legs greenish, the antennae testaceous ; thorax with excessively fine transverse striation. Mesothorax and mcta- thorax (including median supient) of similar length. Seventh and eighth abdn~ninal seg- ments of subcqual length. each faintly en- larging from base, the ninth a little shorter, apically inflated and subglobofic, nearly half as broad again at apex as a1 base, the cerci much as in D. feinoraia, hut stouter, more compressed and without basal tooth.
Length of body, 67 mm. ; head, 3 mm. ;
mesothorax, 13.5 mm.; fore femora, 20.5
mm. ; middle femora, 14.5 mm. ; hind fen-iorn, 19.5 mm.
I f . North Carolina (Morrison).
In most features this species stands
nearly intermediate between D. deu/icrus and D.femo~ata.
Diapheromera femorata.
Spectrum femoraturn Say, Exp. Long,
ii, 297 (1824); Amer. ent., iii, pi. 37
(1828).
Diaplicrumera femorata Harr., Treat.
ins. inj. veg., (1840, 1841).
Phasiiia (Bacteria) femorata de Haan,
Bijdr. kenn. Orth., 101, 134 (1842).
Baciincuhis fernoratus Uhl., Harr.,
Treat. ins. inj. veg., 3 ed., 146 (1862). Diapheromeya sayi Gray, Syn. Phasm.,
18 (1835).
Bacteria snyi Charp., Ortll. descr., pi. 6 (1841-1845).
Bacfe& (Bactinc~dz~s) sayi Burm.,
Handb. ent., ii, 566 (1838).
f!mu~zcu!hi~ sayi Thorn., Trans. 111. st. agric. soc., v, 441 (1865).
Bacteria lifiearis Gosse, Lett. Alab.,
275 (18.59).
Originally described from the "United
States," Niagara and the Missouri River
being specified. I have seen specimens
from Prout's Neck, Me., Vermont, vie.
Boston, Massachusetts, Prescott, Ont.
(Billings), Ncw York, Niagara ll'alls,
Maryland (Uhler) Virginia, Illinois,
Manitoba, Je-fferson, Dallas Co. and Den- ison, Iowa (Allen), St. Louis, Mo.,
Dallas, Tex. (Boll) and Ringgold
Barracks, Tex, (Scholt). It has also
been reported, but perhaps sometimes
by mistake for the next species,
from Montreal (Caulfield), New
Hampshire (Scudder) , New Jersey
(Say, Smith), Pennsylvania (de Haan),
Wisconsin (Walsh and Riley), Min-
nesota (Lugger), Kansas and Ne-
braska (Brunei-), Kentucky (Garman),
Indiana (Blatchley) , South Carolina (de Haan), Tennessee (de Haan, Saussure),
Alabama (Gosse), New Mexico and
Mexico (Haldernan) .




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April, x p r ] PSYCHE. 189
The species has been frequently
figured.
Diapheromera veliei.
Biapheromera 7~elii Walsh, Proc. ent.
sac. Philad., iii, 409-410 (1864).
Originally described from Nebraska,
and since then reported only from that
state and Illinois. I have seen speci-
mens from Maryland (Uhler), Virginia
Wirt Robinson), Georgia (Morrison) ,
Ohio, Southern Illinois (Thomas), Man-
itoba, Dallas Co. and Jefferson, Iowa
(Allen), Lincoln, Valentine and Sand
Hills, Nebr. (Bruner) , Platte River,
Nebr. (Hayden), Barber Co., Kans.
(Bruner), Dallas, Tex. boll) , Ringgold
Barracks, Tex. (Schott) , Pecos River
(Capt. Pope), Albuquerque, N. Mex.
(Bruner), Sancelito, Mex. (Palmer),
Sail Pedro and Montelovez, Coaliuila,
Mex. (Palmer), and Venis Mecas and
Sierra San Miguelito, San Luis Potosi,
Mex. (Palmer).
Diapheromera mesillana sp. nov.
8.
Slenderer than D. femorafa, uniform
greenish flavous, the antennae infuscated beyond the basal third, the thorax smooth, with an obscure median carina ; sub;ipical inferior spine of middle and hind femora rather slight. Mesothorax and metathorax (including median segment) of equal length. Seventh and ninth abdominal segments sub- equal in length and distinctly longer than the eighth, all equal in width and nowhere enlarged, the ninth rather feebly and wgu- larly emarginate, exposing a amall, trans- verse, apically arcuate, supraanal plate ; cerci about as long as the ninth abdominal seg- ment, rigidly straight, directed backward and not at all downward, slender, tapering, blunt tipped, externally convex, and internally concave.
Length of body, 55 mm.; head, 3 nim.;
antennae, circa 37 nlm.; mesothorax, 12.5 rnm,; fore femora, 14.5 mm. ; middlefemora, 11 mm. ; hind femora, 13.5 mm.
2 (7. Between Mesilla and Las
Cruces, N. Mex., June 30 (A. P.
Morse).
LIFE HISTORIES OF NORTH AMERICAN GEOMETRIDAE. - XXI. BY HARRISON G. DYAR, WASHINGTON, D. C.
Eudtde mendica Walk. This larva has
proved unusually difficult and for no real reason. As early as 1871 Mr. W. Saunders published on the first stage, but was unable to go further as he could find nothing that the larvae would eat. I have tried the same experiment with equal ill success, till the fortunate discovery of the food plant by Mr. Lucock (Can. ent., xxx, 248, 1898) ren- dered the whole matter simple. The food
plant was also independently discovered by Mr. W. D. Kearfott, who has kindly pre-
sented to me an inflated larva and pupa
shells.
The first stage has been described by
Saunders, the last by Lucock, both briefly and the pupa has been remarked on by
Hulst and Smith.
Egg.
Suspended on a slender silken fibre
which runs from one object to another so that the egg swings free in the air. In
nature the eggs were found laid on sheep's



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