The hemispherical scale, Saissetia coffeae (Walker) (Hemiptera: Coccidae) is one of the most important pest attacking olive trees in Egypt. The aim of the present work is to study the biological studies of the hemispherical scale, S. coffeae. Mean durations of the first instar were 15.5± 0 .85, 12.8 ± 0.63 and 9±0.76 days at 18, 24 and 30oC, respectively. Second instar lasted for 23.3±0.67, 20.6±0.52 and 16.9± 0.88 days, respectively. While third instar durations were 22.6± 0.70, 19.8±0.63 and 13.2± 0.79, respectively. Incubation periods were 21.4 ± 1.17, 14.4 ± 0.70 and 10.1 ± 0.88 days, respectively. The generation time was 82.80±1.48, 67.6±1.26 and 49.2±2.10 days, respectively. As a result the durations of the adult longevity were 6±0.67, 8.7±0.82 and 8.9 ± 0.74 days at 18, 24 and 30oC, respectively.
Abd-Rabou, S., Ali, N., & El-Fatih, M. (2009). Life table of the hemispherical scale, Saissetia coffeae (Walker) (Hemiptera: Coccidea). Egyptian Academic Journal of Biological Sciences. A, Entomology, 2(2), 165-170. doi: 10.21608/eajbsa.2009.15438
MLA
Shaaban Abd-Rabou; Nadia Ali; Monira M. El-Fatih. "Life table of the hemispherical scale, Saissetia coffeae (Walker) (Hemiptera: Coccidea)", Egyptian Academic Journal of Biological Sciences. A, Entomology, 2, 2, 2009, 165-170. doi: 10.21608/eajbsa.2009.15438
HARVARD
Abd-Rabou, S., Ali, N., El-Fatih, M. (2009). 'Life table of the hemispherical scale, Saissetia coffeae (Walker) (Hemiptera: Coccidea)', Egyptian Academic Journal of Biological Sciences. A, Entomology, 2(2), pp. 165-170. doi: 10.21608/eajbsa.2009.15438
VANCOUVER
Abd-Rabou, S., Ali, N., El-Fatih, M. Life table of the hemispherical scale, Saissetia coffeae (Walker) (Hemiptera: Coccidea). Egyptian Academic Journal of Biological Sciences. A, Entomology, 2009; 2(2): 165-170. doi: 10.21608/eajbsa.2009.15438
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