Proceedings of the Washington Academy of Sciences

PROCEEDINQS

OF THE

WASHINGTON ACADEMY OF SCIENCES.

Vol.

II, pp. 539-540.

December

20, 1900.

PAPERS FROM THE HARRIMAN ALASKA

EXPEDITION.

XIX.

ENTOMOLOGICAL RESULTS

(13)^:

PSYLLID^.

By

E.

a. Schwarz.

Only

^a

few specimens

of this family

were

collected during the

Harriman Alaska

Expedition. Since

most

of

them

are

more

or less

immature, and

since

no

record of their food-plants has

been

preserved, it is not

deemed

advisable todescribe

them,

although at least

two

of the species,

and

possibly also the third

may be

undescribed.

Very

^{little is}

known

^of the Psyllid

fauna

of the boreal regions of

North America,

but

judging from

the material preserved in the

U.

S. National

Museum

^(mostly

from Labrador, New Hampshire, Lake

Superior,

and

the high

moun-

tains of Utah), it

would seem

that only four

genera

of this

family occur in boreal

North America, namely,

Livia,

Apha-

lara^ Psylla,

and

Trioza^ all of very

wide

distribution both in the

Old World and New World, and

all, with the exception of Livia, extending to the Tropics.

No

species has hitherto

been

recorded

from Alaska.

Aphalaran. sp.

Fox

Point, July (no ^date), 4 specimens; Popof Island, July 7 and

9, 2 specimens; Belkofsky, July 22, ⁱ specimen.

(539)

540 SCHWARZ

Aphalaran. sp.

Metlakahtla, June 4, ⁱ specimen;

Fox

Point, July (no ^{date), i} specimen; PopofIsland, July 7 and _{9, 2} specimens.

Psylla sp.

Fox

Point, July (no ^{date), 2} specimens; Popof Island, July 16, ⁱ

specimen; Saldovia, July ^{21, i} specimen. These specimens, all im- mature,

may

possibly belong ^to Psylla arctica

Walker

(^Aphalara arctica Walker, List of the specimens of

Homopterous

Insects in the British

Museum,

part iii,p. 931, 1851), describedfrom ^St.Martin

Falls,

Albany

River,

Hudson

Bay.