THE MEXICAN BEAN BEETLE 



25 



Figure 4. The Length of the Developmental Periods of the Larvae and Pupae 

 Reared in Controlled Environments. • — Constant Envirorunents. O — Varied En- 

 vironments. 



30 



37 



17 



40 



30 



40 



50 



M- 



70 



_Q0_ 



_S(L 



-37 



ZONEm 



45 



ZONE I 



29 



ZONEU 



ZONEHJ 



30 3/ 22 20 



22 85 



2% 



25 



28 



24 27 



27 



-22 



17 



50 60 70 80 



RELATIVE HUMIDITV-PER CENT 



90 



Figure 5. The Percentages of Larvae and Pupae Reaching Maturity in Controlled 

 Environments. e — Constant Environments. O — Varied Environments. 



50 60 70 80 



RELATIVE HUMIDITV-PER CENT 



