Table 1.

Comparative efficacy of different optical devices for red palm weevil infestation detection in date palm trees at Riyadh, Saudi Arabia.

Method	n	Accuracy (%)
Actual	31	100 ± 0a
Visual	31	87 ± 6ab
Thermal Camera	31	61 ± 9b
Digital Camera	30	52 ± 9b

Means followed by the same letter in same column were not significantly different at α: 0.05. n = number of date palm trees observed