Abstract
The infestation of houses by Incisitermes minor (Hagen) was surveyed in Kansai and Hokuriku areas (9 prefectures) by means of a postal questionnaire sent to termite control companies. Of the 96 companies that responded, 31 of them, located among Hyogo, Osaka, Wakayama, Toyama, and Fukui Prefectures, reported finding I. minor attacks in houses they had inspected. Approximately 83% of the infested houses were wooden post and beams constructions. Worker (nymph) castes were the most commonly found caste in infested houses. The infestation was usually detected by fecal pellets under the infested timbers. Roofing materials such as rafters, trim, boards, beams, pillars, and lathing boards, and interior materials such as window frames, door frames, pillars, poles, and paper doors were the most susceptible parts. Spraying with insecticide was the most common countermeasure taken to combat infestation.
