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River bluet

River bluet

Enallagma anna

A species of Bluets

The scientific name of the species was first validly published in 1900 by Williamson.

General Info About River bluet
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Attributes of River bluet
Colors
Black
Blue
Habitat
slow creek; stream; river
Adult Food Sources
Flies, mosquitoes, moths, small beetles, other small flying insects
Larva Food Source
Small aquatic invertebrates, zooplankton, larvae of other insects, small fish, tadpoles
Biting/stinging
Not reported
Allergy-causing
Not reported
Defensive attack
Not reported
Pest-Eating Predatory
Not reported
Phytophagous
Not reported
Predatory
The River bluet typically preys on other arthropods and does not directly affect plants.
Biting animal or pet
Yes
Mouthparts Type
Chewing mouthparts
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Species Status of River bluet
It is found in North America.
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Distribution Area of River bluet
North America
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Life Cycle of River bluet
Egg The egg of river bluet is elongated and laid in water. River bluet will develop inside the egg and the form at this stage is barely distinguishable. It's mainly a period of internal cell differentiation and growth.
Naiad Upon hatching, the naiad of river bluet resembles a miniature adult but lacks wings. As a voracious aquatic predator, it molts several times, gaining size and complexity with each molt. Coloration can be variable, often blending with its aquatic habitat.
Adult Emerging from its final molt, the adult river bluet is characterized by long, membranous wings and an elongated body. Coloration is often vibrant, with mature males often more colorful than females. The adult's primary function is reproduction, flying to find mates and lay eggs.
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Predators of Adult River bluet
Birds, spiders, frogs and toads, robber flies, praying mantises
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Interesting Facts About River bluet
River bluet can engage in aerial acrobatics with remarkable precision during courtship and territory defense, flipping and darting in ways that defy common flight patterns.
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Scientific Classification of River bluet
Tips for Finding River bluet
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Youth Habitat of River bluet
Freshwater Habitats
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Adult Habitat of River bluet
Freshwater Habitats, Forests and Woodlands, Grasslands and Prairies, Urban and Suburban Areas
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How Can You Attract River bluet
As river bluet mainly feed on small insects and other invertebrates, any sort of trapping method would need to attract these prey items. However, trapping is not a commonly recommended method for finding river bluet.
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What is the Best Weather to Observe River bluet
Warm, calm, and sunny weather conditions are ideal for finding adult river bluet, as they prefer flying in good weather. Wet and windy conditions are less suitable.
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How and Where Can You Find River bluet at Different Life Stages
Egg Eggs of river bluet are laid on aquatic plants or directly in the water. To find them, observe the stems and leaves of aquatic plants in calm bodies of water such as ponds or the edges of lakes.
Naiad River bluet naiads are aquatic and can be found in the same water bodies where eggs are laid. Look for them by gently scooping sediment and aquatic vegetation from the water with a net and examining it carefully.
Adult During emergence, river bluet transition from naiads to adults. This event often takes place on plants near water bodies. Spotting an emergence requires patience and timing, but carefully examining water-adjacent vegetation during the emergence season may yield sightings.
Adult river bluet are aerial and can most often be spotted near bodies of water such as ponds, lakes, and slow-moving streams. They can be found resting on vegetation or patrolling the water's edge. Quietly walking along the banks and watching for their characteristic flight patterns is an effective way to spot them.
Are River bluet harmful?
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Beneficial Effects of River bluet
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Explore how insects help as pollinators, pest predators, and biocontrol agents. From seed dispersal to decomposition, they play vital roles in our ecosystem.
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Predators of Pests
Predators of Pests
Purpose
Feed Itself
Diets
Mosquito Larvae, Aquatic Insects
River bluet, as both a naiad and adult, hunts in aquatic environments, targeting mosquito larvae, small fish, and tadpoles. This adaptative hunter uses its speed and efficiency to snatch up unsuspecting prey, primarily to feed itself, ensuring its survival and contribution to the ecosystem.
Common Questions People Also Ask
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