Table 2 Effect of ethanolic extract of Cyathocline purpurea, Blumea lacera, Neanotis montholonii, and N. lancifolia on the midgut of A. aegypti larvae. − sign indicates no effect (or control), while increasing + signs indicate the severity of the treatments as shown in Fig. 2
|  | 24 h | 48 h | 72 h |
|---|---|---|---|
Control | − | − | − |
C. purpurea | |||
 0.05 mg | + | ++ | +++ |
 0.2 mg | ++ | +++ | − |
B. lacera | |||
 0.1 mg | − | − | − |
 0.3 mg | − | + | ++ |
N. montholonii | |||
 0.1 mg | − | + | +++ |
 0.3 mg | + | ++ | +++ |
N. lancifolia | |||
 0.1 mg | − | + | ++ |
 0.3 mg | + | + | ++ |