Calomycterus setarius

Roelofs, 1873

Imported Long-horned Weevil

Calomycterus setarius, commonly known as the imported long-horned weevil, is a broad-nosed weevil native to Japan that has become established in eastern North America. The belongs to the Curculionidae and is classified within the Entiminae. It is frequently encountered in the northeastern and midwestern United States, with confirmed records from states including Connecticut, Illinois, Indiana, and Iowa.

Imported Long-horned Weevil - Calomycterus setarius, Pt. Pelee National Park, Leamington, Ontario by Judy Gallagher. Used under a CC BY 2.0 license.

Pronunciation

How to pronounce Calomycterus setarius: /ˌkæloʊmɪkˈtɛrəs sɪˈtɛəriəs/

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Identification

As a broad-nosed weevil (Entiminae), this possesses a short, broad rostrum rather than the elongated snout characteristic of many other weevil groups. The specific epithet 'setarius' suggests setose (bristly) characteristics, though detailed diagnostic features for field identification require examination. The 'long-horned' may refer to elongated relative to body proportions. Positive identification to species level typically requires examination by a .

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Distribution

Native to Japan. Introduced and established in eastern North America. Confirmed distribution records include Connecticut, District of Columbia, Illinois, Indiana, and Iowa in the United States.

Similar Taxa

  • Other Entiminae (broad-nosed weevils)Share the characteristic short, broad rostrum that distinguishes this from other Curculionidae with elongated snouts.

More Details

Invasion History

The has been introduced from its native range in Japan and has become common enough in eastern North America to warrant the 'imported' long-horned weevil, indicating its non-native status in this region.

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