BIOLOGICAL NOTES ON THE CHRYSOPIDAE

1937 ◽  
Vol 15d (2) ◽  
pp. 29-37 ◽  
Author(s):  
Wm. L. Putman
Keyword(s):  
Biological Control ◽  
Life History ◽  
Oriental Fruit Moth ◽  
Seasonal Prevalence ◽  
Natural Control ◽  
Ecological Data ◽  
Early Stages

This paper presents further biological and ecological data on the Chrysopidae gathered during a study of the predators of the oriental fruit moth. The species concerned are Chrysopa rufilabris Burm.; C. plorabunda Fitch; C. downesi R. C. Smith; C. oculata Say; C. nigricornis Burm.; Meleoma signoretti Fitch and M. emuncta Fitch. Data on life history include relation of development to temperature, number of generations, method of overwintering, and oviposition. The early stages of C. downesi, M. signoretti and M. emuncta are described. Seasonal prevalence and fluctuations in abundance from year to year are discussed and notes are given on natural control agencies. The value of chrysopids in the biological control of the fruit moth is summarized, with the conclusion that only in exceptional seasons are they of appreciable importance.

TRICHOGRAMMA MINUTUM RILEY AS A PARASITE OF THE ORIENTAL FRUIT MOTH (LASPEYRESIA MOLESTA BUSCK.) IN ONTARIO

1934 ◽  
Vol 10 (3) ◽  
pp. 287-314 ◽  
Author(s):  
W. E. Van Steenburgh
Keyword(s):  
Biological Control ◽  
New Jersey ◽  
Special Reference ◽  
Oriental Fruit Moth ◽  
Practical Significance ◽  
Considerable Importance ◽  
Natural Control ◽  
Host Abundance ◽  
Egg Parasite ◽  
Trichogramma Minutum

The investigations described in this paper were carried out during the period 1928–1933, and deal with the egg parasite, Trichogramma minutum Riley, with special reference to its field of usefulness in the biological control of the oriental fruit moth (Laspeyresia molesta Busck.) in Ontario. This cosmopolitan parasite is a factor of considerable importance in regulating the abundance of the fruit moth in southern New Jersey, but appears to be of little practical significance in the natural control of the pest in Ontario. Under certain conditions of weather and host abundance, parasitism may be increased materially by the liberation of Trichogramma in the orchards but, in general, the results are not dependable. A large number of experiments were conducted utilizing three biological races of the species. The technique employed in the work and the results obtained are given as well as a number of important observations on the habits and biology of the parasite.

The Collection Of the Cactus Weevil, Cactophagus spinolae (Gylh.), in Mexico and its Dispatch to South Africa

1952 ◽  
Vol 43 (1) ◽  
pp. 43-50 ◽  
Author(s):  
Wendell F. Sellers
Keyword(s):  
South Africa ◽  
Biological Control ◽  
Life History ◽  
Food Preferences ◽  
Prickly Pear ◽  
Made In

Collections of Cactophagus spinolae (Gylh.) were made in Mexico in 1946, 1947, and 1948 to supplement the biological control of prickly pear (Opuntia spp.) in South Africa. During these three years, 862, 1,396, and 15,584 adults, respectively, were dispatched to South Africa. The weevils were sent by air express in specially designed containers, and arrived in excellent condition.This paper includes information on the distribution, life history and food preferences of C. spinolae. The need is stressed for anticipating the effects of transit conditions upon living insect material transported by aircraft.

Life-History and Natural Control in British Columbia of Ocnerostoma piniariella Zell. (Lepidoptera: Yponomeutidae), a Needle Miner on White Pine

1958 ◽  
Vol 90 (10) ◽  
pp. 627-631 ◽  
Author(s):  
Peter Harris
Keyword(s):  
New York ◽  
British Columbia ◽  
Life History ◽  
North America ◽  
Pinus Sylvestris ◽  
Scots Pine ◽  
Swiss Alps ◽  
Natural Control ◽  
Pinus Cembra ◽  
White Pine

Ocnerostoma piniariella Zell. is an unimportant pest of Scots pine, Pinus sylvestris L., in Europe. A variety, copiosella Frey, is found in the Swiss Alps attacking a white pine, Pinus cembra L., and sometimes occurs in sufficient numbers to reduce growth. Both European forms have a life-history similar to that described here for British Columbia.In North America, specimens identified as O. piniariella were collected in 1882 at Ithaca, New York (Forbes, 1924). The first Canadian record was for 1922 at Abbotsford, British Columbia, from white pine (Felt, 1922). The species has since been found in British Columbia at Vancouver, Victoria, Langley, and Aldergrove. Dr. T. N. Freeman (in litt.), Entomology Division, Ottawa, has collected it at Constance Bay, South March, Ottawa, and Bells Corners, Ontario.

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