STUDIES ON EUBLEMMA SCITULA RAMB. (LEPIDOPTERA : NOCTUIDAE) AN IMPORTANT PREDATOR OF BROWN SCALE, SAISSETIA COFFEAE WLK. (HOMOPTERA : COCCIDAE) INFESTING PARWAL
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Date
1986
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AAU, Anand
Abstract
Studies on biology seasonal occurrence and mass rearing technique of Eublemma scitula Ramb. (Lepidoptera: Noctuidae) an important predator of Saissetia coffeae Wlk. (Homptera : Coccidae) infesting parwal, Trichosanthes dioica Roxb. were carried out at Anand Campus of Gujarat Agricultural University during 1985 and 1986. Biological observations revealed the E. scitula Ramb. lays eggs singly which hatches out 4-6 days. The larvae are predatory on brown scales, Saissetia coffeae Wlk. and complete their development after passing through three larval instars. The duration of first, second and third instar at 26.67 + 1.11 °C and 63.45 percent relative humidity 4.1, 4.4 and 11.7 days respectively, whereas at room temperatures during winter (average minimum, maximum temperatures and relative humidity being 20.9°C, 23.94°C and 58.90 percent respectively) and summer (average minimum, maximum, temperatures and relative humidity being 26.37°C, 29.83°C and 64.06 percent respectively), the durations were 4.5, 4.7, 11.8 and 3.2, 3.3, 9.1 days respectively.
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AGRICULTURAL ENTOMOLOGY, AGRICULTURE, A STUDY