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Green Darner
Green Darner (Anax junius)
28.5383, -81.3792
Field Notes
Description:
The Green Darner is one of the largest dragonflies, with male sizes ranging from 70-76 millimeters in length and 90-104 millimeters in expanse, and female sizes ranging from about 68-80 millimeters in length and 90-106 millimeters in expanse. Both male and female are characterized by green thoracic region and a reddish-brown coloration ventrally in the abdominal region, with the female having slightly lighter coloration. Both male and female members of this species show light blue abdominal coloration dorsally. Nymphs are fully aquatic, six-legged, with large lateral eyes, elongate wingpads, and underslung mouthparts. Maximum length of nymphs 50-55mm (Jaques 1947, Needham 1927, Bright and O'Brien 1998 ).
Habitat:
The Green Darner prefers still or very slow-moving fresh water, with lots of aquatic vegetation, and can only flourish where there are no predatory fish.
Notes:
The breeding range of Anax junius extends from the northernmost part of the United States (Alaska) and south to Panama; also occurs from Hawaii east to Nova Scotia; also occurs in West Indies and Tahiti. Known to occur in Asia from Kamchatka south to Japan and mainland China (Cannings et. al., 1991).
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