A new species of the flower bug genus Orius Wolff (Hemiptera: Anthocoridae) cryptically inhabiting Hibiscus tiliaceus L. (Malvaceae)

A new species of the anthocorid genus Orius Wolff (subgenus Heterorius Wagner), O. (H.) hibiscus sp. n., is described, based on specimens recently found from the coastal area of Okinawa Island, Ryukyus, Japan. This new species, evidently most related to Orius (Heterorius) strigicollis (Poppius), was found to prefer cryptic habitat, or bract and flower bud of Hibiscus tiliaceus (L.) (Malvaceae) planted at urbanized zones in Naha City. Diagnostic characters of the new species are described, comparing with those of other Japanese members of Heterorius, based on detailed observation using a SEM. An updated checklist and revised key are provided to aid in identification of all known Japanese Orius species.