File contains data for the 303 larvae measured at the time of emergence and corresponds to the same individual ID numbers, incubation treatments, and family codes as the hatch data file. Data includes individual ID codes, thermal incubation treatment the individual incubated in from egg to hatch, family code (each code represents a cross between 1 female and 1 male; families were unrelated), measurements for the three phenotypic traits quantified at the time of emergence: time to emergence (days), emergence body length (mm), and total growth from hatch to emergence (mm), and estimates for the mean temperature (MeanT) and Degree Days each individual experienced in the rearing chambers within the raceways from hatch until the timing of emergence. Note: Thermal incubation treatments were coded as A=Warm, B=Variable, C=Ambient, and D=Cold prior to analysis of the data