Shadow Darner
Encyclopedia
The Shadow Darner is a species dragonfly
Dragonfly
A dragonfly is a winged insect belonging to the order Odonata, the suborder Epiprocta or, in the strict sense, the infraorder Anisoptera . It is characterized by large multifaceted eyes, two pairs of strong transparent wings, and an elongated body...

 in the family
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 Aeshnidae
Aeshnidae
The hawkers include the largest dragonflies found in North America and Europe, and are among the largest of the dragonflies on the planet...

.

Adult

The shadow darner is a large dragonfly with a length of 2 5/8 to 3 1/8 inches (68 to 78 mm). The base is brownish black in color. Greenish crescent-shaped spots are at the top of the thorax. The sides of the thorax are marked with two yellowish to yellowish green diagonal stripes. Its abdomen is marked with bluish green spots. The male shadow darner has paddle-shaped anal appendages.

Naiad

The naiad of the shadow darner is large in size, with a length of 1 1/2 to 1 3/4 inches (38 to 43 mm). This naiad is long and slender, which is the typical shape of immature Darners. Its mottled green and brown.

Distribution

  • United States
    United States
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    : (Alabama
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     • Arkansas
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     • California
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     • Colorado
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     • Connecticut
    Connecticut
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     • District Of Columbia • Delaware
    Delaware
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     • Georgia
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     • Iowa
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     • Idaho
    Idaho
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     • Illinois
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     • Indiana
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     • Kansas
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     • Kentucky
    Kentucky
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     • Massachusetts
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     • Maryland
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     • Maine
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     • Michigan
    Michigan
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     • Minnesota
    Minnesota
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     • Missouri
    Missouri
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     • Mississippi
    Mississippi
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     • Montana
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     • Nebraska
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     • North Carolina
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     • North Dakota
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     • New Hampshire
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     • New Jersey
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     • New Mexico
    New Mexico
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     • New York
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     • Ohio
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     • Oregon
    Oregon
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     • Pennsylvania
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     • Rhode Island
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     • South Carolina
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     • South Dakota
    South Dakota
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     • Tennessee
    Tennessee
    Tennessee is a U.S. state located in the Southeastern United States. It has a population of 6,346,105, making it the nation's 17th-largest state by population, and covers , making it the 36th-largest by total land area...

     • U.S. Virgin Islands • Vermont
    Vermont
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     • Washington • Wisconsin
    Wisconsin
    Wisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...

     • West Virginia
    West Virginia
    West Virginia is a state in the Appalachian and Southeastern regions of the United States, bordered by Virginia to the southeast, Kentucky to the southwest, Ohio to the northwest, Pennsylvania to the northeast and Maryland to the east...

    )

  • Canada
    Canada
    Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

    : (Alberta
    Alberta
    Alberta is a province of Canada. It had an estimated population of 3.7 million in 2010 making it the most populous of Canada's three prairie provinces...

     • British Columbia
    British Columbia
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     • Manitoba
    Manitoba
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     • New Brunswick
    New Brunswick
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     • Northwest Territories
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     • Nova Scotia
    Nova Scotia
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     • Nunavut
    Nunavut
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     • Ontario
    Ontario
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     • Prince Edward Island
    Prince Edward Island
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     • Quebec
    Quebec
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     • Saskatchewan
    Saskatchewan
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    )

Habitat

The shadow darner patrols along small marshy streams. Its often found feeding along woodland edges or even in deep shadow in full forest. Shadow darners can also be found near ditches, slow streams, and ponds.

Naiad

The shadow darner naiad feeds on a wide variety of aquatic insects, such as mosquito larvae, other aquatic fly larvae, mayfly larvae, and freshwater shrimp. They also feed on small fish and tadpoles.

Adult

This dragonfly will eat almost any soft-bodied flying insect including mosquitoes, flies, butterflies, moths, mayflies, and stoneflies.

Ecology

The naiad is an active predator and are able to swim by jet propulsion. They squirt water out from the ends of their abdomens. They will generally take several years to mature, and when the immature changes into a dragonfly, they do so at night. This behavior probably was evolved to avoid being eaten be daytime predators. The adult generally flies from late April to November, and do all of their hunting while on the wing. The shadow darner is able to regulate its body temperature which enables it to fly in temperatures too cold for most dragonflies. This dragonfly species in particular seems to be extremely cold tolerant. This dragonfly flies at dusk and in shaded areas, and it flies later into the fall than any species other than the yellow-legged meadowhawk (Sympetrum vicinum
Sympetrum vicinum
The Yellow-legged Meadowhawk or Autumn Meadowhawk or is a member of the Libellulidae family and grows to 26–35 mm long.-Naiad:This is a small naiad, with a length of . It is mottled green and brown in color...

).

Reproduction

Male shadow darners establish and defend territories along the shores of slow streams and ponds. After both genders mate, females fly singly, without the male attached, to lay their eggs in the stems and leaves of aquatic plants.

Similar Species

The shadow darner has a vertically flattened cerci with a spike at the end, which is much brighter than the Lance-tipped Darner.
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