author(s)
Isha Sharma and Divender Gupta

abstract
The results on the morphometric studies of B. dorsalis and B. zonata carried out on mango, guava and peach revealed that the mean egg length was in the range of 1.08 to 1.15 mm and 1.06 to 1.14 mm, for B. dorsalis and B. zonata, respectively. The maximum and minimum mean larval length of the third instar larva of B. dorsalis was 8.38 ± 0.09 mm on mango and 8.04 ± 0.07 mm on peach, respectively. In B. zonata the mean larval length of 8.07 ± 0.08 mm on mango was at par with guava (7.83 ± 0.09 mm). The pupal length of B. dorsalis and B. zonata on mango (4.81 ± 0.03 mm and 4.61 ± 0.04 mm) was at par with guava (4.76 ± 0.02 and 4.58 ± 0.05 mm) and superior to peach (4.65 ± 0.03 and 4.55 ± 0.04 mm). The length and wing span of female of B. dorsalis and B. zonata on mango and guava were at par and superior to peach. The maximum length of the male of B. dorsalis (8.18 ± 0.06 mm) and B. zonata (7.68 ± 0.11 mm) was recorded on mango.