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In the middle of June, 2010, we received the following requests from the manager of a bookstore along an irrigation canal which drew water from the Chikuma River. "During the night, massive flights of aquatic insects are attracted to the lights of my shop.” The abundance of aquatic insects was monit...

Adult Limnophyes natalensis were collected using sticky and suction light traps during the course of a year in a Japanese food factory. Such physical control methods have been demonstrated effective for collecting adult midges. The numbers of adult L. natalensis collected with the two methods were c...

We investigated the seasonal abundance and flight activity of adult Limnophyes natalensis within a food industry. A total of 43,163 insects were automatically counted with a special light trap during the study period. The automatically counted numbers reflected the abundance of L. natalensis, becaus...

Nagano Prefecture, an inland climate mountain area of Japan, extends widely north and south, and the altitude varies greatly with the location. Mosquitoes transmitting infectious disease have a diversity of habitats in Nagano, and many species can be expected. There have been few reports about mosqu...

Mass emergences of adult caddisflies often lead to severe nuisance conditions. The objective of this study is to clarify the abundance and seasonal trend of adult caddisflies in the middle reaches of the Shinano River. All of the adult caddisflies attracted to the illuminated showcase of a vending m...

The species composition and abundance of chironomid midges attracted to the illuminated showcase of a vending machine, set on the riverside in the middle reaches of the Shinano River (Ueda City, Nagano Prefecture, Japan), were investigated. A total of 4,439 midges (1,719 males and 2,720 females) wer...

Flights of chironomid midges have caused some problems for residents around water treatment works. The development of physical and biological control strategies against chironomid midges is needed because chemical control is not feasible in slow sand filter beds. In this study seasonal changes in th...