Validation of an automatic evaluation of sticky traps for fungus-gnats

The evaluation of adhesive trap is a time-consuming task, vulnerable to count errors. Our proposition originated from the need to perform periodical evaluations of fungus-gnats (Diptera: Sciaridae). We selected, at random, 100 traps samples from a single site. Manual counting was performed and the traps were subsequently submitted to digitalization and automatic counting. We perform comparisons of both counting methods using R. The proposed automatic based approach is more expeditious in analyzing bigger samples or in including larger areas.