NOTES ON THE OCCURRENCE OF THE COMSTOCK MEALYBUG, PSEUDOCOCCUS COMSTOCKI (KUW.), AT NIAGARA FALLS, ONTARIO

1945 ◽  
Vol 77 (12) ◽  
pp. 217-217
Author(s):  
R. W. Sheppard
Keyword(s):  
Niagara Falls ◽  
Queen Victoria ◽  
Pseudococcus Comstocki ◽  
Comstock Mealybug

Heavy infestations of mealybug, first noticed on some large catalpa trees in Queen Victoria Park, Niagara Falls, about mid-September, 1944, and watched at intervals from then on, were found through the medium of specimens submitted by Dr. Harold Morrison, U.S. Bureau of Entomology, to be referable to the species Pseudococcus comstocki (Kuw.).

scholarly journals Sex Pheromone of the Comstock Mealybug, Pseudococcus comstocki KUWANA : Isolation and Identification

1980 ◽  
Vol 15 (3) ◽  
pp. 328-333 ◽  
Author(s):  
Tsutomu NEGISHI ◽  
Minoru UCHIDA ◽  
Yoshio TAMAKI ◽  
Kenji MORI ◽  
Taketoshi ISHIWATARI ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Isolation And Identification ◽  
Pseudococcus Comstocki ◽  
Comstock Mealybug

TWO MEALYBUGS (HOMOPTERA: PSEUDOCOCCIDAE) NEW TO BRITISH COLUMBIA

1978 ◽  
Vol 110 (8) ◽  
pp. 895-895 ◽  
Author(s):  
R. D. McMullen
Keyword(s):  
British Columbia ◽  
Adult Stage ◽  
First Instar ◽  
Large Numbers ◽  
Pseudococcus Comstocki ◽  
Comstock Mealybug ◽  
Research Institute ◽  
Cherry Trees

In February 1976, first instar nymphs of a mealybug were found overwintering in bark crevices of cherry trees at Penticton, B.C. As these were much smaller than and distinctive from overwintering second and third instar nymphs of the apple mealybug, Phenacoccus aceris Signoret, which were present in large numbers, they were collected and reared to the adult stage on small cherry trees in a greenhouse. Mature fernales were identified by Dr. W. R. Richards, Biosystematics Research Institute, Ottawa as the Comstock mealybug, Pseudococcus comstocki (Kuwana).

scholarly journals Old Parasitoids for New Mealybugs: Host Location Behavior and Parasitization Efficacy of Anagyrus vladimiri on Pseudococcus comstocki

Insects ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 257
Author(s):  
Renato Ricciardi ◽  
Valeria Zeni ◽  
Davide Michelotti ◽  
Filippo Di Giovanni ◽  
Francesca Cosci ◽  
...  
Keyword(s):  
Biological Control Agent ◽  
Hind Tibia ◽  
Developmental Time ◽  
Basic Knowledge ◽  
Parasitoid Behavior ◽  
Host Preferences ◽  
Parasitization Rate ◽  
Choice Tests ◽  
Pseudococcus Comstocki ◽  
Comstock Mealybug

The Comstock mealybug, Pseudococcus comstocki (Hemiptera: Pseudococcidae) is a primary pest of orchards in the North and Northwest of China. This pest appeared recently in Europe, including Italy, where it is infesting mainly vineyards as well as apple and pear orchards. The present study investigated the efficacy of Anagyrus vladimiri, a known biological control agent (BCA) of Planococcus ficus, on P. comstocki to evaluate a potential use for the management of this new pest. No-choice tests were conducted to quantify the parasitoid behavior against P. ficus and P. comstocki. The parasitoid successfully parasitized both species (parasitization rate: 51% and 67% on P. comstocki and P. ficus, respectively). The A.vladimiri developmental time (19.67 ± 1.12 vs. 19.70 ± 1.07 days), sex ratio (1.16 ± 1.12 vs. 1.58 ± 1.07) and hind tibia length of the progeny showed no differences when P. comstocki and P. ficus, respectively, were exploited as hosts. Two-choice tests, conducted by providing the parasitoid with a mixed population of P. ficus and P. comstocki, showed no host preference for either of the two mealybug species (23 vs. 27 first choices on P. comstocki and P. ficus, respectively). The parasitization rate (61.5% and 64.5% in P. comstocki and P. ficus, respectively) did not differ between the two hosts. Overall, our study adds basic knowledge on parasitoid behavior and host preferences and confirms the use of this economically important encyrtid species as an effective BCA against the invasive Comstock mealybug.

scholarly journals The Court & the Cataracts

2018 ◽  
Vol 106 (1) ◽  
pp. 100-125
Author(s):  
Tyler Wentzell
Keyword(s):  
Late Nineteenth Century ◽  
Private Land ◽  
Niagara Falls ◽  
Land Owners ◽  
Queen Victoria ◽  
The Government ◽  
First Time ◽  
Court Of Appeal ◽  
Insight Into

The establishment of the Queen Victoria Niagara Falls Park involved an extensive expropriation by the Government of Ontario. The perceived social value of parks had been increasing in recent years, but this was the first time in Canada that private land had been expropriated in order to create a park. The majority of the land owners engaged in arbitration, while three land owners took their objections as far as the Ontario Court of Appeal. The enacting legislation along with these proceedings provide unique insight into life around the falls, the role of the Ontario Court of Appeal, and the nature of expropriation and the establishment of parks in late nineteenth century Ontario.

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