米国西部が原産地で現在は世界各国に分布を広げている。植物検疫では世界各地から輸入される様々な切り花や野菜等の生鮮植物から発見されている。日本では1990年に埼玉県、千葉県で初めて発見され、現在では沖縄を除く全国でみられる。本種はメスでは色彩変異が著しく淡色型～褐色型まで見られるが、淡色型でも通常は腹部背板に褐色斑がある。一方オスは一様に淡色である。きわめて多食性で様々な植物に見られるが、日本では自然の植生よりは圃場や花壇等人工の環境に多く見られるようである。本種の褐色型は、コロンビアやエクアドルに分布するF. panamensis Hoodに酷似するが、後脚基節の背面側に微刺を欠くのに対し、後者では数本の微刺を持つことで識別できる。

This species is originated from western part of USA but currently widespread in the world, and is intercepted on the many kinds of plants such as cut-flowers and vegetables imported from the many countries by Japanese plant quarantine. In Japan, it was collected from Saitama and Chiba at first time in 1990 and today it is distributed throughout Japan except Okinawa. In female, body colour is various, pale to dark, but if pale dark markings are usually present on abdominal tergites, whereas male is uniformly pale. This species is polyphagous but seems to be usual in the artificial environment such as crop field and flower bed rather than natural vegetation. The dark individuals of female are very similar to F. panemensis Hood which is distributed in Colombia and Ecuador. However, it can be distinguished from the latter species by hind coxae without microtrichia on upper surfaces (vs. with several microtrichia in the latter species).

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  Female, pale type

  

  Female, pale type

  

  Female, dark type

  

  Female, pale type

  

  Female, pale type

  

  Female head and thorax, pale type