Literature

Authors	Year	Title
P. N. Krishna Ayyar	1940	A remarkable wild host plant of the cotton stem weevil, Pempheres affinis Fst., from S. India, and its parasitic associates.
C. H. Hoffmann	1940	Additions to annotated lists of insects reared from elm bark and wood.
A. B. Baird	1940	Biological control of insect pests in Canada with special reference to the control of the European spruce sawfly Gilpinia polytoma Htg.
J. van der Vecht	1940	De kleine pepersnuitkever (Lophobaris piperis Marsh.).
K. Uffeln	1940	In Westfalen gefangene und aus anderen Insekten erzogene Schlupfwespen.
P. N. Krishna Ayyar	1940	Investigations on Spathius critolous Nixon, an important parasite of the cotton stem weevil, Pempherulus affinis Fst., of South India.
G. E. J. Nixon	1940	New genera and species of Hormiinae, with a note on Homiopterus Giraud (Hymenoptera: Braconidae).
D. T. Fullaway	1940	New species from the Bishop Museum collection of Samoan parasitic Hymenoptera.
P. Wallace	1940	Notes on the smaller European elm bark beetle, Scolytus multistriatus Marsham.
P. N. Krishna Ayyar, Narayanaswami S. P.	1940	On the biology of Spathius vulnificus Wilk., a possible effective parasite of Pempherulus affinis (Faust) in South India.
L. A. Hetrick	1940	Some factors in natural control of the southern pine beetle, Dendroctonus frontalis Zimm.
P. N. Krishna Ayyar	1940	The alternate host plants and associated parasites of Pempheres affinis Faust in South India.
C. F. W. Muesebeck	1940	Two new hymenopterous parasites of sugar-cane borers in India.
J. Wille	1940	ubersicht der landwirtschaftlich wichtigen Insekten von Peru (Sudamerika).
H. Donisthorpe	1940	Xorides indicatorius Latr.? parasitic on Leiopus nebulosus L., and a list of other species of Hymenopterous parasites of Coleoptera in Great Britain.
A. Shestakov	1940	Zur Kenntnis der Braconiden Ostsibiriens.