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TERMITES

Termites are social insects that eat wood. There are two basic types of termites, those that live entirely in wood, and those that can tunnel into the ground. The wood-inhabiting termites are the more primitive type. Their colonies consist of excavated galleries inside dead branches or logs. Once the dead wood is consumed the colony dies. Since single pieces of dead wood can not sustain a very large family, their colonies rarely ever number more than a few thousand termites. These wood inhabiting termites have a primitive type of caste system. Instead of having true workers they have false workers which are older nymphs who have undergone a regressive molt and that temporarily stay in the nest galleries and help their parents to raise more brothers and sisters. The soldiers have enlarged orange heads and long toothed jaws. The soldier's main purpose is to defend the colony from termite's mortal enemies, the ants. Most nymphs gradually grow wing pads and then transform into winged termites called alates. The alates fly from the colony at a certain time of the year to start new colonies. Among the wood inhabiting termites, there are various specialists such as rotten wood termites, damp wood termites and dry wood termites. Dry wood termites can be very serious pests of houses and furniture. All wood inhabiting termites produced fecal pellets. If you have dry wood termites in your house you are likely to see the coarse sand-like pellets long before you discover the termites themselves. Most termites are the subterranean type and are able to tunnel in the soil. The ability to tunnel allows them to find many separate pieces of wood, on which to feed. Since they are not limited to one piece of wood, their colonies can be much bigger than those of wood-inhabiting species. Usually their colonies number from hundreds of thousands to several million. The mother of the colony is usually quite grossly pregnant. These mothers are the mothers of all mothers, so to speak. Hence, they are called queens. The soil-tunnelling termites have a more advanced caste system with true workers. True workers are never able to become alates although they can become soldiers and sometimes they even transform into special reproductives called ergatoids. Soldiers of subterranean termites have a gland on the head that secretes defensive chemicals. The soldier jaws are modified in many weird and wonderful ways; they may be sword-like, serrated, toothed, hooked, rod-like, etc. Some soldiers have extraordinary snapping mandibles. In another group, the mandibles are regressed to tiny points while the defensive gland is produced forward as a nose; these are the nasute termites. Many subterranean termites have specialized diets and may eat plant litter, grass, dung or humus, instead of wood. In tropical areas many subterranean termites build nests or mounds which are among the most impressive examples of animal architecture. Subterranean termites can be very serious structural pests of houses. They do not produce fecal pellets like the drywood termites. Instead, the entry of subterranean termites into a house is usually revealed by the presence of mud shelter tubes on walls. FORMOSAN TERMITES »Formosan termite colonies can reach population sizes of over 10 million individual termites. »Formosan termites aggressively forage for food and have been found as far as 100 yards away from the main nest. »They will repeatedly test chemical barriers and find ways to penetrate breaches in the treated soil. »Formosan termites build large nests within the walls and other enclosed spaces within a structure.  These nests serve as residence for millions of individual termites and as reservoirs of moisture to sustain the colony during dry periods. »They are also very good at finding additional above ground sources of moisture.  Common sources of moisture are roof leaks, window frames, bathtubs and showers. You may be giving termites the moisture they need each time you bath. »Once established within a building these nests are difficult to destroy and drastic measures must be taken to eliminate them.   Treatment options include: physical removal of the nests by opening the walls, wall treatments with aerosol or foam termiticide applications, or whole house fumigation. »Colonies in New Orleans tend not to fight with each other and there is growing evidence that colonies share food resources. Colony mixing like this can cause an overexploitation of resources and domination of a habitat by the supercolony. »This termite is an invasive species, as are Argentine ants and red imported fire ants. Invasive species can sometimes escape natural predators and parasites that kept them in check in their native lands. GROUND BARRIER TREATMENT To do a ground barrier treatment you must dig a 4"deep X 6"wide trench right up against the slab of the structure and apply the termiticide in the trench. Talstar One has a proven efficacy of 10-14 years. Dragnet SFR has a proven efficacy of 5-7 years. WOOD TREATMENT Bora-Care is the best choice for a long term wood treatment. Wood treated with Bora-Care will prevent termites from tunneling across it for up to six years and from eating it for up to fifty years. Bora-Care treats wood for termites, formosan termites, carpenter ants, old house borers, powder post beetles and wood rot.

This page was last updated on: February 15, 2007