Abstract
It seems worth to record newly introduced cockroach species from faunal as well as pestcontrol point of view. During recent years the following three Blattellid species were found in our faunal limits. 1. Supella longipalpa (Fab.)(=spellectilium Serville) This well-known tropical pest was found in 1969 in the houses of Chichijima of the Bonin Islands. 2. Lobopterella dimidiatipes (Bolivar) This soil-surface cockroach has been known from many Pacific Islands. In Japanese territory it was first discovered by Prof. R. Kano in 1955 in Iriomote Island, the Yayeyama-group of the Ryukyus. Then, from the other Ryukyu Islands, i.e., Okinawa, Miyako, Ishigaki by my colleagues and myself. There are also specimens from Yang-ming-shan, near Taipei and Kuraru, southern Taiwan, the latter taken by Dr. Chu. 3. Imblattella panamae (Hebard) This is an indigenous Panamanian species. In recent years many individuals were detected from the pots of tropical orchids. In Tokyo area this cockroach is said to be not uncommon in the greenhouses where tropical orchids are cultivated, probably imported directly from Central America, or indirectly, from nurseries of orchids or tropical plants in the other part of the world. A brief description for each species were given together with illustrations of taxonomic characters.
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