| Month/year of collection | Total No. of specimens estimated | Un fed (UF) | Full fed (FF) | Semi gravid (SG) | Gravid (G) |
| February 1997 | 496 | 10 (2.0) | 42 (8.5) | 227 (45.8) | 217 (43.7) |
| November 1999 | 104 | 9 (8.7) | 11 (10.6) | 64 (61.5) | 20 (19.2) |
| April 2007 | 14 | 1 (7.1) | 1 (7.1) | 9 (64.3) | 3 (21.5) |
| August 2014 | 56 | 3 (5.3) | 10 (17.9) | 37 (66.1) | 6 (10.7) |
| Total | 670 | 23 (3.4) | 64 (9.6) | 337 (50.3) | 246 (36.7) |