American Rubyspot Damselfly - Hetaerina americana
Damselfly Americano de Rubyspot, fotos de diagnóstico e información.
Live adult damselflies photographed at Winfield and Bartlett, Illinois, USA.
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American Rubyspot Damselfly

Damselflies complete a life cycle in one or two years. The adults mate over the shallow water, sometimes in flight but often while clinging to the exposed portions of weed beds or shoreline vegetation. Immediately after mating, the female will crawl down the vegetation, and 'into' the water to lay her eggs on the submerged portion of the vegetation.

Once the eggs are laid she will crawl back up the vegetation and repeat the process. When the eggs hatch they do not go through the larva and pupa transformations. The newly hatched damsel is just a smaller version of the later immature stages. Thus they are simply called 'nymphs' until they actually hatch into adults.

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American Rubyspot Damselfly

The damselfly nymph is predacious. Usually it lies in wait for other aquatic bugs to get within range and then grabs them with its 'labium' which is a modified lower jaw. The nymph will proceed through 10 to 12 instars, or molts, before becoming fully developed and ready to emerge as an adult. With each molt the nymph becomes somewhat darker in color. Finally the nymph will swim towards the shore and crawl into shoreline vegetation. While clinging to this vegetation the nymph's skin breaks along the wing case and out crawls a shortened version of the adult. Before taking flight, the new adult must pump body fluids into its abdomen and wings. Depending on the species, the adult will live for several weeks to several months before mating and dying.

The adult has four wings that fold over the back. The male of the most common variety in the interior is blue while the female is more of a slate color. For the nymph, a fairly large and bulbous head sits on a tubular shaped body. The eyes of the damsel are fairly pronounced but not as large or pronounced as the eyes of a dragonfly nymph.

 

American Rubyspot Damselfly
Male American Rubyspot Damselfly

The American rubyspot is without doubt one of the most beautiful insects extant. Among the states, only Washington and Idaho lack records of this species. The range continues from the United States south into Mexico. In Canada, these provinces have records: Ontario, Quebec, and New Brunswick. One of three Nearctic species in the genus.



There were hundreds of mating pairs along the shore of this lake at West Branch Forest Preserve, DuPage County, Illinois.

American Rubyspot Damselfly
Extreme Red Version		American Rubyspot Damselfly
 		American Rubyspot Damselfly
 		American Rubyspot Damselfly
Female
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