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  • Horse-Bean Longhorn Beetle - (Trachyderes mandibularis)

    Horse-Bean Longhorn Beetle - (Trachyderes mandibularis)

    The large Horse-Bean Longhorn Beetle loves southern latitudes, from the east to the west coast.

    Picture of Horse-Bean Longhorn Beetle
    Staff Writer (9/23/2014): The Horse-Bean Longhorn Beetle lays its eggs on a variety of trees commonly found in southern U.S. states and Mexico. Citrus, ficus, willow and hackberry trees are common host plants. Horse beans are also called broad beans, or fava beans, and they grow on a woody shrub or tree. These are also host plants. Larvae hatch and bore into the trees where they remain until they emerge as adults.

    Bright red/fuscia saguaro cactus fruits are a juicy food source for populations living in or near the Sonoran desert. Male Horse-Bean Longhorn Beetles have large jaws extending from the head that are used to battle other beetles trying to partake of a claimed cactus. Females lack these menacing mandibles.

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    Details of the:
    Horse-Bean Longhorn Beetle

    Category: Beetle
    Common name: Horse-Bean Longhorn Beetle
    Scientific Name: Trachyderes mandibularis
    Other Names: Long-Jawed Longhorn Beetle

      Kingdom: Animalia
       Phylum: Arthropoda
        Class: Insecta
         Order: Coleoptera
          Family: Cerambycidae
           Genus: Trachyderes
            Species: mandibularis

    Size (Adult, Length): 17mm to 32mm (0.67in to 1.26in)

    Identifying Colors: yellow, black, orange

    Additional Descriptors: flying, striped

    North American Reach (Though Not Limited To*): Alabama; Arizona; California; Florida; Georgia; Louisiana; Mississippi; Nevada; New Mexico; South Carolina; Texas; Utah; Virginia; Mexico

    * 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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