PROBLEM TO BE SOLVED: To provide a pest insect generation estimation device capable of predicting generation of pest insects.SOLUTION: A pest insect generation estimation device comprises: accumulation means 10 having an accumulation part 11 for inducing pest insects calculation means 30 for estimating the number of pest insects in the accumulation part 11 and pest insect generation estimation means 40 for estimating change of the number of pest insects, based on time variation of the number of pest insects estimated by the calculation means 30. The pest insects are induced to the accumulation part 11 and are accumulated, and the number of pest insects accumulated is grasped, and based on time variation of the number of pest insects, the pest insect generation estimation means 40 estimates change of the number of pest insects, so that, it is possible to objectively predict change of the number of pest insects. Then, according to change of the predicted number of pest insects, it is possible to take measures properly to pest insects.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】害虫の発生を予測できる害虫発生推定装置を提供する。【解決手段】害虫等を誘引する集積部11を備えた集積手段10と、集積部11の害虫等の数を推定する計数手段30と、計数手段30が推定した害虫の数の時間変動に基づいて害虫の数の変化を推定する害虫発生推定手段40と、を備えている。集積部11に害虫等を誘引して集積し集積されている害虫等の数を把握し、その時間変動に基づいて害虫発生推定手段40が害虫等の数が変化を推定するので、客観的に害虫等の数の変化を予測することができる。すると、予測する害虫等の数の変化に応じて、害虫等に対する対策を適切に立てることができる。【選択図】図1