Article beginning on page 250.
Psyche 7:250, 1894.

Full text (searchable PDF)
Durable link: http://psyche.entclub.org/7/7-250.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.

Since my paper on the cL Gryllidae
of Indianay'* appeared, seven addi-
tional species have been taken, so that
now 22 are known to occur in Vigo
County.
From what is known of the
life history of the mole crickets, the two species, Gryllotalfa horealis Burm.,
and G. columbia Scudder, undoubtedly
exist through the winter in the larval
stage, though I have never happened
upon them in that season.
A careful study of the members of
the genus Gryllus during the last three
years has developed the fact that 4
species, namely : G. neglectus Scudder,
uhbreviatus Serville, å´pennsylvanicu
Burm., and luctuosus Serville inhabit
the county. The last two may be dif-
ferent forms of the same species, but
that the first 3 are distinct, there is, to my mind, no doubt.
Of these, the eggs of neglectus and
fennsylvanicus, and probably those of
Zucfuosus, hatch in autumn, and the
young in numbers tnay be found
beneath logs, rails, and other protective cover during the entire winter. Often
as many as a dozen are sheltered
beneath the same object, each at the
bottom of a cone-shaped pit, quite sim-
ilar to the one made in loose sand by
the larva of the ant lion, Myrmeleon
obsoletus Say.
G. neglectus reaches maturity as
early as May $11, the males having been
heard chirping on that date. Pem-
sylvunicus and luctuosus are full
grown about the 25th of May, while
the adults of abbreviatk, from eggs
hatched in spring, do not occur until
the last week in July.
EGGS OF THE LONG-NOSED OX-LOUSE, IL4EALATOPINUS VITULA L.
BY I?. L. HARVEY, ORONO, ME.
Professor Osborn says in his mono-
graph "Pedicula and Mallophaga af-
fecting Man and the Lower Animals "
(Bull. 7, Div. Ent. U. 3. Dept. Agric.
p. 18) "that the eggs of this species
have not been described, and we have
not had the good fortune to discover
them." Having been more fortunate
we are able to submit the following
*Pro& Ind. Acad. Sd., iSm.
account of the eggs of this species.
The Long-nosed ox-louse has been
quite bad this winter in herds in the
vicinity of Thoinaston, Me. At our
request Mr. A. W. Batcllelcler of
Thomaston collected some hair from
the infested animals, and upon this
we found three egg-shells with the
operculum off, but the form, sculpture,
manner and place of attachment to the
hairs seemed perfect.




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

June i8as.l PS TCHi?. 251
Description. Elongate oval, tapering
toward the base. Slightly bulging on the side away from the hair in one specimen, or in the others narrower and more sym-
metrical. About two and a half times as
long as wide. The empty shell hyaline
and beauttyuZly sculptured with hexagonal reticulations. The hexagons somewhat
variable in size and perfectness in different parts of the shell, hut average ones about one- twentieth of the width of the shell. The surface apparently smooth, the angles of the reticulations not beset with points as in the eggs of the Short-nosed ox-louse. Attached to the hair by a cement mass
about one-third the length of the egg, as shown in the figure. The cement mass
varies in shape, the distance it extends along the hair and the remoteness of the attachment from the root of the hair. The sloping base of the egg is included more or less in the cement mass, and the egg stands somewhat obliquely outward from the hair. Below we give measurements of the three
eggs observed. The figure, drawn to scale by the writer, shows the egg enlarged 40 times.
Measurements: Specimen (a), length, ,863 mm.; width, .38 mm; width of operculum,
265 mm. ; from base of hair, 5 mm. ; cement mass, .345 mm.; hexagonal reticulations of shell, .02 mm.
Specimen (b), length, ,805 mm. ; width,
.379 mm.; width of operculum, .253 mm,;
from base of hair, 5.75 mm.; cement mass, 288 mm.
Specimen (c), length, ,805 mm.; width,
379 mm. ; width of operculum, ,265 mm. ; from base of hair, 10 mm.; cement mass,
,312 mm.
ON THE VALIDITY OF THE TACHINID GENUS CELATORIA. BY D. W. COQUILLETT, WASHINGTON, D. C.
On page 235 of the second volume of
Insect life, the wi iter erected the genus Celatoria for the reception of an inter- esting Californian species of Tacliina
fly that preys upon the adults of the
destructive Diairotica soror, as many
as one-third of these beetles sometimes
falling a prey to the attacks of this
parasite. The validity of this genus
has been called in question by the well- known authors, Messrs. Brauer and
Bergerstainm, who cite it as asynonym
of the previously described genus
Besseria (Die zweiflugler des Kaiser-
lichen Museums zu Wien, vi, 154 and
189;
also p. 220, where the species,
cratuii Coq., is erroneously credited to C. H. T. Towusend). That these two
genera are very distinct from each other may easily be seen by the following




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