| thermoregulation and evaporative cooling in the cicada okanagodes gracilis (homoptera: cicadidae). | 1. okanagodes gracilis uses a combination of physiological and behavioral mechanisms to regulate body temperature (tb) to a prescribed range. 2. high thermal tolerances (48.6 degrees c tb) and evaporative cooling permit the species to remain active during the hottest parts of the day. 3. the regression of tb on ambient temperature (ta) (y = 0.142x + 34.63) intersects the isothermal line at 40.4 degrees c, below the shade-seeking value of 41.2 degrees c. 4. in the laboratory, weight (water) loss ... | 1992 | 1355041 |