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  • Red-Shouldered Ctenucha Moth - (Ctenucha rubroscapus)

    Red-Shouldered Ctenucha Moth - (Ctenucha rubroscapus)

    The Red-Shouldered Ctenucha Moth lives on the West Coast where is enjoys life in the sun, and an all-natural diet of flowers and grasses.

    Staff Writer (8/3/2017): Bold colors on the Red-Shouldered Ctenucha Moth mimic that of wasps. This helps in avoiding predators. The blue-black body offsets the bright orange-red hairs on the thorax ('shoulders') and head. The black wings are tipped with a thin line of white at the bottom edges. This species of moth is only found in the low-elevations of the western U.S.. Adults feed on flowers, but the caterpillars feed on grasses. The caterpillar is black with bits of white and a brown-ish head and rear. Tufts of light gray hairs cover the body and when it prepares to pupate, it encases itself in a 'cage' of hairs.

    Seen during the day, this species is active from the beginning of summer to the beginning of autumn. Look for them in the coastal grasses and adjacent meadows and marshes.

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    Details of the:
    Red-Shouldered Ctenucha Moth

    Category: Butterfly or Moth
    Common name: Red-Shouldered Ctenucha Moth
    Scientific Name: Ctenucha rubroscapus

      Kingdom: Animalia
       Phylum: Arthropoda
        Class: Insecta
         Order: Lepidoptera
          Family: Arctiidae
           Genus: Ctenucha
            Species: rubroscapus

    Size (Adult, Length): 15mm to 20mm (0.59in to 0.79in)

    Identifying Colors: black, red, orange, blue, white

    Additional Descriptors: flying, bee, wasp, large, tipped

    North American Reach (Though Not Limited To*): California; Oregon; Washington

    * Keep in mind that an insect's reach is not limited by lines on a map and therefore may appear in areas/regions/states beyond those listed above.

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