README file accompanying Clutch data.csv Clutch ID = ID number of the egg clutch the larvae originate from. Family = ID number of the mother of the larvae. Temperature = rearing temperature. Night temperature is 15 °C for each treatment. Plant = host plant the larvae were fed with. Pl = Plantago lanceolata, Vs = Veronica spicata. Group = unique ID for each group based on Family, Temperature and Plant. Time = start of interval, or last time the larva was seen alive. If the larva survived until diapause, this is the diapause day. Time2 = end of interval, or when the larva was found dead. If the larva survived, this is NA. Dead = event code (3 = dead, 0 = alive).