Sample trees Number of Larvae observed per m2 per foliage Total Mean
  At lower crown At middle crown At upper crown    
1 12 18 10 40 13.3
2 35 31 25 91 30.3
3 16 10 8 34 11.3
4 6 17 7 30 10.0
5 24 20 12 56 18.6
6 36 28 12 76 25.3
7 14 9 5 28 9.3
8 22 26 19 67 22.3
9 5 7 4 16 5.3
10 28 11 10 49 16.3
11 24 14 12 50 16.6
12 35 15 16 66 22.0
Total 257 206 140 603 200.6
Mean 21.4 17.2 11.6 50.2 16.7
SEM 1.96 0.095 2.41 4.46 1.48
Table 1: Larval density of N. bletealis on M. stenopetala during infestation period of December 2011 in Doketu kebele of Konsa district.