Delphastus

Target pests:

Delphastus catalinae

This small black beetle has been used to control and eradicate almost every whitefly species of commercial importance, from the “Giant” whitefly on Eucalyptus in California, to Bemisia in Poinsettia.

It is native to Florida where its’ natural host is, Bemisia. Because of this, Delphastus will seek out and destroy any Bemisia colonies before it moves on to other species of whitefly.

Being sub-tropical in origin, it is not affected by day-length or temperature. It has been used in almost every protected crop as well as in cotton fields in Texas. It was developed by Lance Osborne at the University of Florida.

Package details:

We sell Delphastus in two packages:

  • 100 vial
  • 1000 vial

General introduction rate:

  • Release at least 100 adults per whitefly “hot spot”, or 10 adults per infested plant, weekly, for 3-4 weeks.

Greenhouse cucumber, pepper and tomato introduction rate:

  • Low Rate: use general rate (above), or 0.5 beetles/m2 (10 ft2), bi-weekly, for 3 weeks.
  • Moderate Rate: 500 Delphastus per whitefly hot spot; or 1-2 beetles/m2 weekly, for 4 weeks.
  • High Rate: 500 Delphastus per whitefly hot spot; or 3-4 beetles/m2 weekly, until established in all infested areas.

Tropical plantscapes introduction rate:

  • Low Rate: use general rate (above) or 0.5 beetles/m2 (10 ft2), bi-weekly, for 3 weeks.
  • Moderate Rate: 500 Delphastus per whitefly hot spot weekly, for 4 weeks.
  • High Rate: 500 Delphastus per whitefly hot spot weekly, until established in all infested areas.

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