2015 Volume 30 Issue 1 Pages 1-5
A habitation investigation of cockroaches in a building in Hiroshima Prefecture was conducted between July 2010 and February 2011, and the following three species were captured by sticky trap: Brown cockroach (Periplaneta brunnea Burmeister; n＝399), German cockroach (Blattella germanica Linne; n＝1170), and Smoky-brown cockroach, (Periplaneta fuliginosa Serville; n＝6). P. brunnea individuals were found on the first to the third basement level; B. germanica, on the first to the third basement level and from the fifth level to the roof; and P. fuliginosa, on the roof and the third basement level. One P. brunnea and 881 B. germanica were captured in the restaurants, and 40 P. brunnea, 190 B. germanica, and three P. fuliginosa were captured in the pantry (SK (slop sink), laundry, and refrigerator). Therefore, B. germanica was the dominant species. 219 P. brunnea and 52 B. germanica were found in the backyards (service corridor), and one P. brunnea and two B. germanica were found inside the vending machines. Three P. brunnea, three P. fuliginosa, and 15 B. germanica were captured in the restrooms. Only 35 P. brunnea were found in the freight-handling area, and one P. brunnea and two B. germanica were found in the machine room. 15 P. brunnea and 27 B. germanica were captured at the garbage collection point. As for seasonal prevalence, a few P. brunnea adults and nymphs were captured between the early summer and early fall, but no adults and a few nymphs were captured in the winter.
