Drywood Termite

Marginitermes hubbardi (Desert Drywood Termites)
Incisitermes minor (Western Drywood Termites)

Drywood Termite

Physical Features

Drywood termites are a social insect having caste members including reproductives, soldiers and nymphs. Each caste has different physical features. Reproductive alates are 1/2 inch long, dark brown to yellow, and have smoky gray wings. Soldiers are brownish, 1/2 inch long, have large developed heads and strong mandibles. Nymphs are white to grayish and 1/2 inch long.

Life Cycle

Incomplete metamorphosis
Winged females and males (alates) emerge from wood initiating the reproductive process through swarming. Female and male reproductives will lose their wings, pair up, and find a crevice in wood to mate. The queen lays and cares for the eggs during the two-week period it takes for them to hatch. Nymphs emerge and take on the role of a worker. They forage for food and feed the colony. Nymphs will molt and eventually develop into either a soldier or reproductive caste depending on the need of the colony. It takes up to 2 years to molt 5 times. Soldiers use their large mandibles to help protect the colony. Reproductives help the queen care and reproduce eggs. The growth of drywood colonies is slower than subterranean termite colonies.

Habits

  • Diet: Wood. Nymphs eat with and across the grain of wood leaving a smooth gallery.
  • Activity: Continually active. Swarm usually late summer or early fall in Arizona.
  • Preferred Climate: 80-90 degrees and relative humidity
  • Defense: Soldiers protect the colony from invaders with their mandibles.
  • Cautions: Damage to structures can be extremely costly and should be treated immediately.
  • Sign of Infestation: Fecal pellets and wood shavings. Small openings found in a structure or furniture above debris.  Mass wings on a surface.
  • Home Invasion: Enter homes through cracks and crevices, window openings during the swarming process, or furniture brought into the home is already infested. Multiple infestations can occur within one structure.

Helpful Hints

Recommend inspection of home to determine service plan.

Interesting Facts

Drywood termites infest dry, sound wood with as little as 3 percent moisture content.

Symptoms

Termite populations can cause severe damage to homes but are not known to bite humans. Essentially termites will bite wood and attack other insects but not people.

Nesting Sites

Drywood termites prefer to nest under wooden roof shingles, eaves, etc.

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