author(s)
Mahesh Math, Kotikal YK and Gandolkar

abstract
Studies related to species diversity and seasonal incidence of fruit flies in drumstick ecosystems were conducted at University of Horticultural Sciences (UHS), Udyanagiri, Bagalkot, India during 2015-16 and 2016-17. During 2015-16, Shannon Wiener index of diversity of the fruit fly population was maximum (H’=1.04) during 17^th SMW of April 2016 followed by 51^st SMW of December 2015 (H’=0.86). The Pielou’s evenness (J') was maximum (0.95) during 17^th SMW of April 2016. The maximum Simpson diversity index value (0.77) was recorded during 17^th SMW of April 2016. During 2016-17, Shannon Wiener index of diversity of the fruit fly population was maximum (H’=0.80) during 43^rd SMW of October 2016. The Pielou’s evenness (J') was maximum (0.94) 42^nd SMW of October 2016. Simpson diversity index was maximum (0.67) 12^th SMW of March 2017 and 38^th SMW (0.62) of September 2016. Irrespective species of fruit flies, maximum catches were noticed during 45^th SMW of November 2016 (52.40 flies/trap/week) and during 1^st SMW of January 2017 (31.50 flies/trap/week).