Differential Effects of constant Humidities on Protoparce Quinquemaculatus Haworth, and Its Parasite,Winthenia Quadripustulata Fabricus

The Effect of Temperature, Relative Humidity And Exposure To Sunlight Upon The Mexican Bean Beetle

“…Regardless of the temperature, the optimum humidity is near 73 per cent. These results are somewhat similar to those obtained by Hefley (5).…”

“…The failure of the experiment of relative humidity and evaporation rate at ordinary summer temperatures to disclose any effect upon the beetles from the late larval stage to adult, led to the idea of testing relative humidity with higher temperatures. Some previous work with temperature by Kramer (6), Miller and Gans 7, Miller (8), and especially Beattie (I) and Hefley (5) showed that temperature is a vital and perhaps the most important single factor in insect life and activity.…”

An Experimental Study of the Growth of Populations of the "Flour Beetle" Tribolium Confusum Duval, as Affected by Atmospheric Moisture

“…Rudolfs ( 1925) has observed the effect of humidity on the activity of mosquitoes, and Cook ( 1920) has shown its relation to the flight of Noctuid moths. Hefley ( 1928) has made an important and interesting study on the differential effects of relative humidity on the Hawk Moth (Protoparce quinquemaculata Haworth.) and one of its parasites, and Weese ( 1924) has noted the effects of different humidity conditions on a spider and its hymenopterous parasite.…”

An Experimental Host-Parasite System: Therioaphis maculata (Buckton)-Praon palitans Muesebeck (Homoptera: Aphididae--Hymenoptera: Braconidae)

“…Much of this knowledge is being extended to include information about insect parasites and predators (Burnett 1959(Burnett , 1960. The occurrence of differential responses of parasites relative to their hosts to certain factors of climate has often been noted ( Shelford 1926;Hefley 1928;Payne 1933Payne , 1934Burnett 1948Burnett , 1949DeBach et al 1955).…”