Pest Guides

Whitefly

Trialeurodes vaporariorum

Appearance

White Fly

  • Whitefly adults are 1.5–3mm in length.
  • Whiteflies are white in colour and resemble wedge–shaped moths.

Lifecycle

  • Female whiteflies lay eggs on the leaf surface which hatch within 10 days.
  • The newly hatched nymphs crawl over the surface of the leaf until they find a suitable place for feeding and settle. They remain there until pupation.
  • Whiteflies live between 30 and 70 days.

Habits

  • Adult whiteflies are found on the younger leaves and deposit eggs in this level. Pupae and emerging adults are located at the lowest leaf level.
  • They cause damage by sucking the sap from plants.
  • Whiteflies and the viruses they carry can infect many different host plants, including agricultural crops, palms, and weeds.
  • Whiteflies damage plants and crops by: Tapping into the phloem of plants, producing toxic saliva and diminishing the plants' turgor pressure. Since whiteflies congregate in large numbers, plants can be quickly overwhelmed. The mold growth as a result of the honeydew whiteflies secrete cause further damage to crops.