Incisitermes minor, or the western drywood termite, as the species is more commonly known, is the most commonly encountered and most destructive drywood termite pest in southern Arizona. Unlike subterranean termite species, which prefer to infest moist and decayed wood, drywood termites are capable of infesting dry and sound wood, just as their name suggests. However, given their desert habitat, western drywood termites have adapted to thrive on wood sources that are particularly dry, making even newly constructed homes vulnerable to attacks by this species. Any structural wood with a moisture content greater than 7 percent can be readily infested by western drywood termites.
In the natural habitat, western drywood termite colonies are most abundant within wooded areas, river washes and canyons where trees can be found. Colonies are frequently recovered from dead portions of willow, cottonwood, oak, and sycamore trees, and these termites are often found infesting tree stumps, logs, and large branches that have fallen to the ground in rural, urban and residential areas. Due to the western drywood termite’s aggressive feeding habits, they are often found infesting natural wood sources on properties, which may afford homeowners adequate time to prevent the destructive pests from establishing an indoor infestation.
On urban and suburban properties where trees are not abundant, western drywood termites are commonly found infesting rose, Pyracantha, and oleander bushes near structures. In urban and suburban areas where trees can be found, these termite pests prefer to feed on alder, almond, apricot, ash, avocado, carob, cherry, citrus, elderberry, mulberry, ornamental pear, peach, plum, and walnut trees. In addition to infesting dry and sound structural lumber within homes, these pests are also frequently found infesting indoor items that are made of finished wood, particularly furniture. In southern Arizona, western drywood termite alates swarm during the months of May through August, and alates are well known for flying through attic vents where they establish colonies within attics and other indoor areas that can be accessed through attics, such as wall voids and ceiling voids.
Are the lumber components in your home treated with chemicals that repel drywood termite pests?