Bradysia impatiens: one of black fungus gnats (Ishikawa)

 

Bradysia impatiens: one of black fungus gnats (Ishikawa)

Today, I will introduce Black Fungus Gnat which I am studying about same as before. In japan, black fungus gnats are known as nuisance come to foliage plant by some people. And there are many types of black fungus gnats and some of them damage various agricultural crops. According to Kobayashi(2018), damages to facility garden crops such as cucumber, melon and flower by Bradysia impatiens, one of black fungus gnats have reported in Japan. In recent years, problems of Bradysia impatiens have reported at Mie prefecture(1998), Nagano prefecture(2004), Nagasaki prefecture(2008) and Ibaraki prefecture(2014). Kobayashi(2018) use oil meal to collect and rear Bradysia impatiens used for experiment. The other day, I added oil meal into the soil of soybean plant I cultivate outdoor. I could find many flies compared to before.

今回も自分が研究対象にしているクロバネキノコバエのことを紹介します。日本では観葉植物によってくる迷惑なコバエとして知られていますが、クロバネキノコバエにも多くの種類がいて、その種類によって様々な農作物を加害することが知られているのです。小林（2018）によれば、これまでクロバネキノコバエの1種であるチバクロバネキノコバエによるキュウリ、メロン、花卉類といった施設園芸作物や露地野菜への被害が報告されており、近年では1998年に三重県、2004年に長野県、2008年に長崎県、2014年に茨城県と被害は拡大しているようです。小林(2018)は研究に使用するクロバネキノコバエを採集、飼育する方法として油粕を利用していました。自分も先日外で育てているソラマメの土に油粕を加えてみたのですが、クロバネキノコバエらしきハエ類を以前よりも多く発見できました。

 

Reference

薬剤効果試験のためのチバクロバネキノコバエの自然発生促進方法および飼育方法, 小林政文, 茨城県病害虫研究会報,57号,p.34-40,2018年5月


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