Experiment Station Record, Volume 95, July-December, 1946 Page: 80
xii, 1033 p. ; 24 cm.View a full description of this book.
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80 EXPERIMENT STATION RECORD [Vol. 95
Extensive field and laboratory trials of this material-known during the war as
Insect Repellent No. 612-indicated it to possess highly effective repellent properties
against a variety of arthropod pests. Equally extensive toxicological studies and
large-scale use by the military forces have proved its safety and lack of irritant
properties. Finally its physical and chemical properties are such as to make it easy
and pleasant to apply and stable in storage or use. This brief paper considers its
physical, chemical, and repellent properties; its use in protecting against mosquitoes,
including the effect of varying the amount employed; application to clothing;
arthropod pests other than mosquitoes (stablefly, blackfly, sand flies, fleas, chiggers,
bedbugs) ; and its toxicological properties.
Insecticidal properties of Euphorbia extracts, F. L. VANDERPLANK (Nature
[London], 156 (1945), No. 3974, p. 782).-Preliminary experiments indicated extracts
of E. tirucalli to possess insecticidal properties. African tribes are reported to use
this species and E. calycina as insecticides.
New German insecticides, L. B. KILGORE (Soap and Sanit. Chem., 21 (1945),
No. 12, pp. 138-139, 169, 171; 22 (1946), No. 2, pp. 122-124).-This "resume of new
synthetic chemicals and insect repellents developed in Germany has been compiled
from the reports of specialists sent to Germany at the request of the Joint Chiefs
of Staff and now released by declassification ... "
Compatibility of cryolite and copper fungicides, G. WENE and W. A. RAWLINS.
(Cornell Univ.). (Jour. Econ. Ent., 38 (1945), No. 6, pp. 655-657).-Combining a
number of commercial fixed Cu compounds with natural cryolite (Kryocide) failed
to affect adversely the toxicity of the latter to third- and fourth-instar Mexican
bean beetle larvae. Bordeaux delayed and decreased the toxic action but did not
render the cryolite impotent. Considerably more feeding was observed on bean
leaves sprayed with cryolite-bordeaux than with the cryolite-fixed copper combinations.
The evidence thus suggests a change in the cryolite when combined with
bordeaux-a change not evident in the fixed Cu mixtures. In a single field test
against the Colorado potato beetle, bordeaux delayed the toxic action of the cryolite,
but did not materially reduce the final mortality in comparison with kills obtained
by two fixed Cu combinations.
The distribution and relative seasonal abundance of the Indiana species of
Cordulidae and Libellulidae (Odonata), B. E. MONTGOMERY. (Purdue Univ.).
(Ind. Acad. Sci. Proc., 54 (1944), pp. 217-224, illus. 2).-A summary of the Indiana
records for members of these two families.
Note preliminaire sur les recentes pullulations d'acridiens, du criquet
migrateur (Locusta migratoria) en particulier [Preliminary note on the recent
swarms of acridians and of the migratory locust in particular], P. VAYSSIERE
(Comnpt. Rend. Acad. Sci. [Paris], 221 (1945), No. 2, pp. 62-64).
A new genus and species of locust of the group Euthymiae (Orthoptera:
Acrididae: Cyrtacanthacridinae) from South Africa, J. A. G. REHN (Phila. Acad.
Nat. Sci., Notzlae Naturae, No. 155 (1945), pp. 7, illus. 7).-Karruia paradoxa
n. gen. and sp. is described..
A first list of Indiana stoneflies (Plecoptera), W. E. RICKER (Ind. Acad. Sci.
Proc., 54 (1944), pp. 225-230).
Two species of Colias migrating in central U. S. A. (Lep.: Rhopalocera),
K. J. FISHER (Roy. Ent. Soc. London, Proc., Ser. A, 20 (1945), No. 10-12, pp. 107109,
illus. 4).-Refers to butterflies of the al'alfa caterpillar and the clouded sulphur.
The position of Epione mollicularia (Lep.: Geometridae), W. T. M. FORBES.
(Cornell Univ.). (Ent. News, 56 (1945), No. 10, pp. 272-276, ills. 1).-Descriptive
and taxonomic notes on this geometrid moth.
The effects of rotenone-bearing dusts on the diamond-back moth (Plutella
maculipennis Curt.), W. COTTIER and H. JACKS (New Zeal. Jour. Sci. and Technol.,
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U.S. Department of Agriculture. Agricultural Research Administration. Office of Experiment Stations. Experiment Station Record, Volume 95, July-December, 1946, book, 1948; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc5061/m1/92/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.