Investigation of a cockroach habitat in an outdoor urban environment

ⅩⅧ　Seasonal prevalence of American cockroaches at a sidewalk site in the center of Tokyo

Abstract

The seasonal prevalence of American cockroaches was investigated by sighting survey from August to December in 2019 and, from May to December in 2020, and sticky trap collection was carried out from July to December in 2020, and from Jan to June in 2021, at a sidewalk site in Roppongi，Minato-ku, Tokyo. The sighting survey confirmed 22 individuals in 2019 and 26 individuals in 2020. The sticky trap was captured 42 adults (18 males, 24 females) and 10 nymphs in 2020 and 27 adults (11 males, 16 females) and 5 nymphs in 2021. American cockroaches live in cesspit manholes, but may be found on the sidewalk in warmer seasons.