Red-veined Darter (Sympetrum fonscolombii)

Here’s a detailed overview of the Red-veined Darter (Sympetrum fonscolombii), a colorful and wide-ranging dragonfly known for its adaptability and long-distance migrations:


Red-veined Darter (Sympetrum fonscolombii)

Taxonomy & Classification

  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Insecta
  • Order: Odonata
  • Suborder: Anisoptera (True dragonflies)
  • Family: Libellulidae (Skimmers)
  • Genus: Sympetrum
  • Species: S. fonscolombii
  • Common names: Red-veined Darter, Nomad Darter, Red-veined Skimmer

General Description

  • Size: 34–45 mm in length; wingspan about 60–70 mm.
  • Appearance:
    • Males: Bright red abdomen and face; thorax brownish with red tones; red veins on wings (especially near leading edges).
    • Females: Yellow-brown body with orange to reddish veins and pale yellow abdomen with thin black lines.
    • Eyes: Bicolored—blue-grey below and brown-red above, a key identifying feature.
    • Wings: Clear with amber at the wing base and a pale yellowish pterostigma bordered by black.
  • Distinguishing traits: The red wing veins and blue-tinted lower eyes clearly separate it from other Sympetrum species.
See also  Ruby Tiger Moth (Phragmatobia fuliginosa)

Behavior & Lifestyle

  • Flight period: April to October (longer in southern Europe and tropics).
  • Activity: Strong flier, often perching conspicuously on twigs or stones near water.
  • Habits:
    • Frequently seen basking in sunny, open habitats.
    • Males aggressively defend small territories along shorelines or ponds.
  • Migration: One of the few truly migratory dragonflies in Europe—regularly colonizes northern regions in summer, even reaching Scandinavia and the British Isles.

Diet

  • Adults: Feed on small flying insects—midges, mosquitoes, flies, and other soft-bodied prey caught in mid-air.
  • Larvae (nymphs): Aquatic predators eating mosquito larvae, tadpoles, and small aquatic invertebrates.

Life Cycle

  • Reproduction:
    • Mating occurs in tandem flight over water.
    • Eggs are released while the pair is in flight—females dip abdomen to scatter eggs on the water surface or floating vegetation.
  • Development:
    • Larvae develop quickly in warm conditions, often completing metamorphosis in a few months.
    • In cooler climates, eggs overwinter and hatch the following spring.
  • Adults: Typically live for several weeks.
See also  Krabi, Thailand

Habitat

  • Occupies shallow, still, or slow-flowing waters—lakes, ponds, ditches, and marshes, often with sparse vegetation.
  • Prefers warm, sunny, and open landscapes such as coastal lagoons, floodplains, and steppe ponds.
  • Tolerates brackish and temporary water bodies, allowing it to colonize semi-arid regions.

Distribution

  • Native range: Southern Europe, North Africa, the Middle East, and much of Asia.
  • Expanding range: Migrates regularly northward into central and northern Europe; recorded even in the UK, Ireland, and southern Scandinavia during warm years.
  • Also found: Canary Islands, Azores, and parts of sub-Saharan Africa.

Ecological Role

  • Predator: Controls populations of small flying insects such as mosquitoes.
  • Prey: Eaten by birds, frogs, spiders, and larger dragonflies.
  • Indicator species: Presence signals clean, well-oxygenated, and sun-exposed aquatic habitats.

Conservation Status

  • IUCN Red List: Least Concern.
  • Population trend: Stable or expanding northward due to climate warming.
  • Threats:
    • Loss of wetlands and temporary ponds.
    • Pollution and eutrophication of freshwater habitats.
  • Conservation: Protection of shallow, sunlit wetlands and maintenance of natural water levels.
See also  Chestnut heath (Coenonympha Glycerion)

Interesting Facts

  • One of the earliest dragonflies to recolonize newly created or disturbed water bodies.
  • Males’ intense red coloration deepens with maturity and warm temperatures.
  • Capable of long-distance flights across seas and deserts—records show migrations between Africa and southern Europe.
  • Its adaptability and strong flight make it one of the most successful Sympetrum species worldwide.

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