Experiments on a mealybug infesting apple and a mealybug infesting catalpa
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Date
1941
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Virginia Tech
Abstract
- The developing time of the mealybug from catalpa exceeded that of the mealybug from apple.
- In no experiment did cross-breeding of the mealybug from apple and from catalpa take place.
- Each mealybug was able to live successfully on both hosts.
- The parasites, Clausenua purpurea Ishii, from the mealybugs from catalpa parasitized the mealybugs from apply failed to parasitize mealybugs from catalpa.
- Some female mealybugs may overwinter in the adult form if fully protected from the weather and if the temperature does not drop below 45 °F.
- Under optimum conditions, several mealybugs lived exceptionally long lives, passing a maximum of 145 days.
- A color differentiation of the females of the two mealybugs was noticeable.