Cook, O.F., Letter from O.F. Cook, Bionomist in Charge, Bureau of Plant Industry, and C.L. Marlatt, Acting Chief of Bureau, to Dr. Paul Osterhout, regarding Yellow Fever research (May 7, 1907, April 30, 1907)
UNITED STATES DEPARTMENT OF AGRICULTURE,
BUREAU OF PLANT INDUSTRY.
BIONOMIC INVESTIGATIONS OF TROPICAL
AND SUBTROPICAL PLANTS.
Washington, D.C., May 7, 1907.Dr. Paul Osterhout,
Bocas del Toro,
The insect you sent with your letter of April 10th
was submitted to the Bureau of Entomology and has been identified
by them as shown by the copy of their letter sent herewith.
Nothing appears to have been known previously regarding its
Bionomist in Charge.
Washington, D. C., April 30, 1907.
Your letter of the 22nd instant was duly received. The
specimen which accompanied it, from Dr. Paul Osterhout, of Bocas
del Toro, Panama, proves to be Sassula costalis Fowl., a hemipterous
insect, described in Biologia Centrali Americana, Rhynchota
Vol. 1. p. 68, fig. 12. No biologic facts accompany this
description, but the specimens were collected in Nicaragua.
This insect is somewhat allied to the Buffalo tree-hopper, and
would probably place its eggs in little slits in the bark, and,
from analogy with other insects of the same class, would hardly
have any occasion to girdle the twig, although this may be a
feature of the biology of this particular species. If this habit
is based on a correct observation, it undoubtedly has something
to do with oviposition, and the remedy probably would be in
collecting the eggs of the insect, either in the severed twig or
in the twig immediately below the point of severance. Its only
means of girdling the twig would be with its ovipositor. It
is, of ocurse, possible that some other insect has done the girdling,
and this Fulgorid was simply fairly common on the trees and
had nothing to do with the girdling.
Yours very truly,
(Signed) C. L. Marlatt,
Acting chief of Bureau.
Mr. O. F. Cook,
Bionomist in Charge,
Bureau of Plant Industry.