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Aeshna sitchensis

Definition of the noun Aeshna sitchensis

What does Aeshna sitchensis mean as a name of something?

Aeshna sitchensis is a species of Aeshna, described by Hagen in 1861.

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Aeshna sitchensis

Zigzag Darner (Aeshna sitchensis)

The approaching warmer weather brought a few of these out the other day. Similar to other Darners, these Aeshnidae are active predators and are capable of swimming by "jet propulsion" - expelling water out from the ends of their abdomens. Taking several years before maturity is attained, they emerge and mature into adult dragonflies at night. It is assumed this characteristic evolved to avoid being predated by day-flying predators. Adults generally fly beginning in June through to September. Aeshna sitchensis regulate their body temperature, making it possible to fly in temperatures too cold for most other dragonflies.

Current understanding of their populations are that they are abundant, widespread and secure.

Photo credit: Five Acre Geographic

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