In this paper, a new species of Anthocorid bug, Euspudaeus beneficus, and its nymphal stages were described. Followings are the conclusions on the biology of this bug. 1. It is distributed in the southern half of Honshu, Shikoku, and Kyushu. 2. In the pile of the dead plant the bug lives on the many species of small insects, but in the Saga district, it is the predator of the rice-borer, Chilo supressalis Walker, in the rice stem pile. 3. For the existence of the large population of this bug, there must be preserved the great pile of rice stem, throughout the year, not too dry in the field. 4. Eggs are oviposited in the plant tissue. From May to August, the bug has two generations at least. 5. The duration of egg period is 7 days, and of nymphal stage is about 30 days.
Mendeley出力
