Darner
( Aeshnidae )


2012-1013-50500000-ODO00523-Aeshnidae[1330h00s,L,A,laterum]{EStrand}-G.jpg

PHOTO COMMENT

IDENTIFICATION
Identification:Aeshnidae
(Rambur ,1842 )
Common Name:Darner
Life Stage:(A) adult

PHYLOGENY

Phylum:Arthropoda
Class:Insecta
Order:Odonata
Suborder:Anisoptera
Family:Aeshnidae
Taxon Code:ODO00523
ITIS/TSN:101596

LOCATION DETAILS
Location Name
Del Puerto Canyon, Del Puerto Canyon, Del Puerto Canyon
County:Stanislaus Co. County
ECI Site#:CA50500000

RECOGNITION
Body Length
Males: 56-111 mm.
Diversity
In California, there are 4 with 11 species. In North America there are 13 genera with 41 species.
Child Taxa
The family is comprised of the hawkers and North American darners. These are the largest dragonflies in North America and Europe, and are among the largest dragonflies worldwide.

BIOLOGY
The dragonflies mate in flight. The eggs are deposited in water or close by. The larvae (nymphs or naiads) are generally slender compared to those of other families, with a long and flat extensible lower lip (labia).
Habitat
Adult: Prey is taken on the wing, over fields and other open spaces. Naiads: Some species inhabit low flowing streams and riffles of rivers. The majority are found in lentic habitats, primarily in marshes, littoral lake environments, and ponds with high vegetation. Dead and decaying debris, and submerged logs are favored for shelter and protection from predation.
Diversity
In California, there are 4 with 11 species. In North America there are 13 genera with 41 species.
Development
Eggs are laid in aquatic vegetation, with or without the male present. Naiads emerge from water from late May to early July, depending on the species. Eclosion occurs at dusk. Naiads crawl onto a vertical substrate (commonly, rocks or plants). Adults mate in the air. The flight season lasts about a month. Most species have one generation per year. The life cycle is completed in 2-4 years.

CREDITS
Photographer
Erica Strand

References
Family Aeshnidae - Darners. (http://bugguide.net/node/view/274). Accessed March 12, 2016. .
ITIS.
California Dragonflies AKA California Anisoptera. (http://bigsnest.powweb.com/southwestdragonflies/caphotos/2_Anisoptera.html). Accessed July 16, 2016.
Wikipedia (https://en.wikipedia.org/wiki/Aeshnidae)
Aeshnidae. (www.cfb.unh.edu/StreamKey/html/organisms/OOdonata/SO_Anisoptera/FAeshnidae/Aeshnidae.html). Accessed July 16, 2016.


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