Yellow-Legged Ringtail

erpetogomphus crotalinus

The Yellow-Legged Ringtail (Erpetogomphus crotalinus) is a striking species of clubtail dragonfly, known for its distinctive coloration and agile flight. These fascinating insects are powerful aerial predators, playing a crucial role in controlling populations of smaller flying insects within their ecosystems. As adults, they are often observed patrolling sunny stretches along clear, flowing rivers and streams, exhibiting impressive acrobatic displays while hunting or defending their territories. Their life cycle, transitioning from an aquatic nymph to a winged adult, showcases a remarkable metamorphosis that connects both terrestrial and aquatic habitats, contributing significantly to the biodiversity of freshwater systems and highlighting nature's intricate balance.

Habitat: This species is primarily found along clear, moderate to swift-flowing rivers and streams with sandy or gravelly bottoms, often with emergent vegetation along the banks.

Appearance

The Yellow-Legged Ringtail is a medium-sized dragonfly, typically characterized by a dark body adorned with bright yellow markings. Its most distinguishing feature is its legs, which are predominantly yellow, especially the tibiae. The abdomen is dark with yellow rings or spots on each segment, giving it a 'ringtail' appearance. The thorax is dark with intricate yellow stripes, and the eyes are often greenish or bluish. Its wings are clear and translucent, and like other clubtails, the abdomen widens slightly towards the tip, resembling a small club.

KingdomAnimaliaPhylumArthropodaClassInsectaOrderOdonataFamilyGomphidaeGenusErpetogomphus

Yellow-Legged Ringtail

Interesting facts

Adult Yellow-Legged Ringtails are territorial, with males often perching and patrolling specific sections of a stream to defend against rivals and attract mates.

Dragonflies can fly backwards, hover, and turn in mid-air, making them one of the most agile fliers in the insect world.

Dragonfly nymphs can spend several years underwater before emerging as adults, undergoing multiple molts.

Their large compound eyes provide nearly 360-degree vision, essential for hunting and detecting predators with exceptional motion perception.

Special abilities

Adult Yellow-Legged Ringtails are highly skilled aerial hunters, capable of rapidly pursuing and capturing other flying insects mid-air using their spiny legs as a basket.

They possess exceptional flight capabilities, allowing for sudden changes in direction, hovering, and rapid acceleration, crucial for both hunting and evading predators.

The aquatic nymphs are cryptic bottom-dwellers, ambushing prey from the substrate of streams and rivers, adapting perfectly to their underwater environment before emerging as adults.

Measurements & details

Length: 4-5 cm
Wingspan: 6-8 cm
Weight: 0.0005-0.001 kg
Lifespan: 1-2 years
Top Speed: 45 km/h
Clutch Size: 200-800
Incubation: 5-15 days

Diet & Feeding

Both adult and nymph stages are predatory insectivores. Adults capture flying insects in flight, while nymphs prey on smaller aquatic invertebrates from ambush.

Age differences: Nymphs are aquatic predators, feeding on a variety of smaller aquatic invertebrates. Adults are aerial predators, feeding exclusively on flying insects.

Primary Foods

Mosquitoes
Midges
Small flies
Mayflies
Caddisflies
Aquatic insect larvae

Foraging Method

Adults Employ Pursuit And Aerial Ambush. Nymphs Use Ambush Predation From The Substrate.

Ecological connections

hunts

Mosquito

Culex pipiens

Major food source for adult dragonflies

hunts

Mayfly nymph

Ephemeroptera larvae

Prey for aquatic nymphs

eaten by

Kingfisher

Megaceryle alcyon

Predator of adult dragonflies

eaten by

Largemouth Bass

Micropterus salmoides

Predator of aquatic nymphs

Traits

No trait badges are assigned for this object yet.

Also known as

No aliases listed yet.

Collections

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Safety

Danger

1/5 · Very low

No special safety notes yet.

Frequently Asked Questions

How to identify Yellow-Legged Ringtail?

The easiest way to identify Yellow-Legged Ringtail is to use the Snappit nature identifier app.

How long is Yellow-Legged Ringtail?

4-5 cm

What is Yellow-Legged Ringtail's wingspan?

6-8 cm

How much does Yellow-Legged Ringtail weigh?

0.0005-0.001 kg

How long does Yellow-Legged Ringtail live?

1-2 years

How fast can Yellow-Legged Ringtail move?

45 km/h

What does Yellow-Legged Ringtail eat?

Both adult and nymph stages are predatory insectivores. Adults capture flying insects in flight, while nymphs prey on smaller aquatic invertebrates from ambush.

Where is Yellow-Legged Ringtail usually found?

This species is primarily found along clear, moderate to swift-flowing rivers and streams with sandy or gravelly bottoms, often with emergent vegetation along the banks.