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  • Giant Darner - (Anax walsinghami)

    Giant Darner - (Anax walsinghami)

    The longest and largest dragonfly in the U.S., the beneficial and beautiful Giant Darner is hard to miss.

    Picture of Giant Darner
    Staff Writer (8/20/2014): The Giant Darner is hailed as the largest example of dragonfly found in the United States of America. This dragonfly can measure about 5" in length with a mighty wide wingspan of up to 5" as well. Highly identifiable by their blue and black coloring, the Giant Darner will not pass your attention when it comes zipping by.

    The Giant Darner appears similar to the Common Green Darner (detailed elsewhere on this site) and shares its large size and interesting coloring pattern. The Giant Darner is differs from the Common Green Darner by its much longer abdomen. The Giant Darner's abdomen is more than twice the length of its body while the Common Green Darner's 'tail' is about the same length of the body.

    Giant Darners can be found as far south as Mexico and cover portions of the lower western United States. Mating and feeding activity keeps the Giant Darner busy throughout the spring and summer months. Adults eat insects (crawling and flying), helping control the population size of nuisance bugs like mosquitoes and flies.

    Like most other dragonflies, the Giant Darner lays its eggs in water sources, allowing larvae to burrow into the water source's bottom. These develop into naiads and feed on other aquatic insects as well as small fish and tadpoles. They eventually crawl out of the water and finish developing wings and mature into adults.

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    Details of the:
    Giant Darner

    Category: Dragonfly or Damselfly
    Common name: Giant Darner
    Scientific Name: Anax walsinghami
    Other Names: Darner

      Kingdom: Animalia
       Phylum: Arthropoda
        Class: Insecta
         Order: Odonata
          Family: Aeshnidae
           Genus: Anax
            Species: walsinghami

    Size (Adult, Length): 90mm to 127mm (3.54in to 5.00in)

    Identifying Colors: green, tan, black, blue

    Additional Descriptors: flying, helpful

    North American Reach (Though Not Limited To*): Arizona; California; Colorado; Nevada; New Mexico; Texas; Utah; 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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