Environmental Entomology (1980) 9, 190-194

R.E. Rice and S.C. Hoyt (1980)
Response of San Jose scale to natural and synthetic sex pheromones
Environmental Entomology 9 (2), 190-194
Abstract: Response of male San Jose scale, Quadraspidiotus perniciosus (Comstock), to female produced and synthetic sex pheromones was studied in Washington and California. Males responded equally well to two isomers of pheromone at rates of 33-900 µg/trap. Pheromone cap loads of 100 µg were more attractive than 300 virgin female scales on gourds. Simplified trap designs were evaluated with synthetic pheromone caps, and were comparable in male collections to the standard 473-ml carton traps normally used with virgin females. Observations of males in the field indicated a lower flight threshold temperature of ca. 17°C, and active flight at wind velocities of less than 1.8 m/sec (4.0 mph). In greenhouse tests, most males responded to pheromones at light values between 4.6 and 32.5 lux.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)

Research topic(s) for pests/diseases/weeds:
pheromones/attractants/traps

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Diaspidiotus perniciosus		U.S.A. (NW)
	Diaspidiotus perniciosus	Peach/nectarine (Prunus persica)	U.S.A. (SW)