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The distribution of <i>Blattella nipponica</i> Asahina in the eastern part of Kanto and Tohoku districts, Japan: Special references to the northern limit distribution

2016; Japan Society of Medical Entomology and Zoology; Volume: 67; Issue: 3 Linguagem: Inglês

10.7601/mez.67.177

2185-5609

Yasuhiro Tomioka, Hiroyasu Satake, Tsutomu Tanikawa,

Animal and Plant Science Education

According to the literature, the northern limit of distribution for the cockroach, Blattella nipponica Asahina was near Tokyo in 1999. In 2012, it was reported that this cockroach was observed up to Iwaki City, Fukushima Prefecture in the Pacific Ocean coastal areas and Nasushiobara City, Tochigi Prefecture in the inland. In the present study, we investigated the distribution of B. nipponica in the Kanto and Tohoku districts during a period from May to September, 2015. This cockroach was observed at an altitude less than 150 m at 11 localities in 2 prefectures. In the coastal areas, B. nipponica was found commonly from the northern part of Ibaraki Prefecture (36.86°N) to Naraha-machi (37.30°N), Fukushima Prefecture and less commonly in Tomioka-machi (37.33°N), Fukushima Prefecture., However, no individual was observed in Ohkuma-machi (37.38°N). The results suggested that the northern limit of distribution for B. nipponica was Akagi, Motooka, Tomioka-machi, Fukushima Prefecture (37.34°N, 40.96°E), indicating that the northern limit moved northward as much as approximately 190 km in 24 years.