Scarlet Skimmer

crocothemis servilia

The Scarlet Skimmer (Crocothemis servilia) is a vibrant, medium-sized dragonfly native to East and Southeast Asia, but introduced to other areas like Florida and Hawaii. Renowned for its brilliant, eye-catching coloration, the mature male is a fiery scarlet red from head to tail, making it a spectacular sight as it darts over sunny wetlands, ponds, and slow-moving streams. These active flyers are territorial and spend their days patrolling waterways, basking on waterside vegetation, and chasing off rivals or pursuing prey. Beyond their striking beauty, Scarlet Skimmers are highly efficient aerial predators that play a vital ecological role in regulating insect populations, especially mosquitoes and flies. Their presence is often an indicator of a thriving freshwater ecosystem, and watching them perform complex aerial maneuvers is a highlight for nature enthusiasts and photographers alike.

Habitat: Typically found in and around stagnant or slow-flowing freshwater environments, including ponds, marshes, rice paddies, ditches, and garden pools.

Appearance

Mature males are unmistakable with their bright crimson-red bodies, red eyes, and a thin black stripe along the mid-dorsal line of the abdomen. The base of their hindwings features a distinct amber patch, and their wing veins are tinged with red. Females and immature males, by contrast, are a duller yellowish-brown or golden color with a matching dark dorsal stripe. They typically measure between 4 to 5 cm in length with a wingspan ranging from 6 to 8 cm.

KingdomAnimaliaPhylumArthropodaClassInsectaOrderOdonataFamilyLibellulidaeGenusCrocothemis

Scarlet Skimmer

Interesting facts

The Scarlet Skimmer was accidentally introduced to Florida in the 1970s, likely via imported aquatic plants, and has since established breeding populations.

Their large compound eyes contain thousands of individual lenses, allowing them to detect the slightest movements of prey in three dimensions.

They practice a posture called 'obelisking' on hot days, pointing their abdomen straight up at the sun to minimize heat absorption.

Unlike the fiery red males, the females are a well-camouflaged golden-brown, helping them avoid predators while laying eggs.

Special abilities

Equipped with specialized flight muscles, they can fly forward, backward, hover, and pivot mid-air instantly to intercept prey.

They possess massive compound eyes containing up to 30,000 ommatidia, granting nearly a 360-degree field of view to spot predators and prey.

Utilize behavioral obelisk posturing, raising their abdomen towards the sun to minimize surface area exposure and prevent overheating.

Measurements & details

Length: 4-5 cm
Wingspan: 6-8 cm
Weight: 0.0001-0.0004 kg
Lifespan: 1 years
Top Speed: 30 km/h
Clutch Size: 100-1000
Incubation: 5-20 days

Diet & Feeding

A voracious generalist predator that feeds entirely on other insects caught on the wing.

Age differences: Nymphs are aquatic ambush predators feeding on aquatic insect larvae, tadpoles, and small fish, while adults hunt flying insects in the air.