| Popis: |
Questions repeatedly asked in relation to emergence of the Mexican bean beetle (Epilachna corrupta Muls.) from hibernation are, when does natural emergence start, how long is the period of emergence, and at what time of the season do overwintered beetles enter the fields? In an endeavor to answer these questions the study of the emergence of this insect from cage and natural hibernation, which was conducted from I924 to I926, inclusive,; in the Estancia Valley, N. Mex. (Douglass, '28), has been continued and extended to include data secured in I930, with some supporting experiments from the years 1927 to I929. |
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