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The objective of this research was to study the biology and
cold storage of an egg parasitoid Telenomus sp. (Hymenoptera:
Scelionidae) of Andraca bipunctata (Lepidoptera: Bombycidae).
This egg parasitoid is the first species discovered at tea
garden in Taiwan. A.Bipunctata was reared on tea leaves in
laboratory, and the egg masses were collected daily for the
parasitoid. The g parasitoid was successively reared for 20
generation without affecting the parasitism rate except the
emergence tate and the sex ratio. A pair of the egg parasitoid
was seared at various temperatures (15、20、25 and 30C), and
the result showed that the developmental duration of Telenomus
sp. was 70.6 days at 15C, and 13.9 days at 30C. The fecundity
was 159.3 progenies/female at 25C and 1.4 progenies/female at
15C. The sex ratio was not significantly different among
temperatures. In mass rearing of the egg parasitoid at various
temperatures (15、20、25 and 30C), the result showed that the
female longevity was 155.6 days at 15C and 24.5 days at 30C. At
25C the acult parasitoid fed on pure honey had the longest
longevity of 58.8 days, while those feeding on distilled water
and non-food had 3.2 and 4.1 days, respectively. Also, the
female longevity was longer than that of male. Female
parasitoid spent 248-590 second to complete the oviposition and
would flip its winge and antennae to compete oviposition
interference. Anemergence peak was observed at 4:00-6:00 a.m.,
and the male emerged earlier than the female. Fot the cold
storage experiment, it was better to treat the egg of A.
bipunctata within 35 days. The result of this study showed
valuable methods in rearing and field releasing Telenomus sp.
for the biological control of A. bipunctata.
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