Common red soldier beetle (Rhagonycha fulva)

Common red soldier beetle (Rhagonycha fulva)

Here’s a detailed overview of the Common Red Soldier Beetle (Rhagonycha fulva), a familiar and beneficial insect in European grasslands and gardens:


🪲 Common Red Soldier Beetle (Rhagonycha fulva)

🔹 Taxonomy

  • Order: Coleoptera (Beetles)
  • Family: Cantharidae (Soldier beetles)
  • Genus: Rhagonycha
  • Species: Rhagonycha fulva
  • Authority: (Scopoli, 1763)

🔹 Common Names

  • Common Red Soldier Beetle
  • Bloodsucker Beetle (misleading—does not bite or suck blood)
  • Red-headed Soldier Beetle

🔹 Identification

  • Size: 7–10 mm in length
  • Color:
    • Bright red-orange body
    • Black-tipped elytra (wing cases)
    • Soft, flexible wing cases — unlike the hard ones in most beetles
    • Long black legs and antennae
  • Shape: Narrow and elongate with a flattened profile

🔹 Distribution

  • Widespread across Europe, also introduced to:
    • Parts of Asia Minor
    • Eastern North America (as a non-native species)
  • Very common in Britain, Ireland, Central and Northern Europe

🔹 Habitat

  • Favors sunny, flower-rich habitats, including:
    • Grasslands
    • Meadows
    • Road verges
    • Gardens and allotments
    • Hedgerows and woodland edges

🔹 Life Cycle & Behavior

🪲 Adult Activity

  • Seen from June to August, peaking in mid-summer
  • Found in abundance on open flowers, especially:
    • Hogweed (Heracleum)
    • Cow parsley (Anthriscus)
    • Thistles, daisies, wild carrot
See also  Rubber root borer (Batocera rubus)

🍽️ Feeding

  • Adults feed on:
    • Pollen and nectar
    • Small insects, aphids, and other soft-bodied invertebrates
  • Larvae are carnivorous, living in the soil and feeding on:
    • Slugs
    • Snail eggs
    • Insect larvae

🐣 Reproduction

  • Mating is common and conspicuous on flowers in summer
  • Eggs laid in soil or leaf litter
  • Larvae develop over winter, pupate in spring, and emerge as adults in early summer

🔹 Ecological Role

  • Pollinator: Frequently visits flowers for nectar
  • Predator: Larvae and adults help control aphids and pests
  • Prey: Eaten by birds, spiders, and other predators
  • An important part of meadow and garden ecosystems

🔹 Similar Species

  • Other soldier beetles in the genus Rhagonycha or Cantharis (e.g. Cantharis livida)
  • Rhagonycha fulva is uniquely:
    • Red-orange with dark wing tips
    • Found in large numbers, often mating in clusters

🔹 Fun Facts

  • Often called the “Hogweed Bonking Beetle” in the UK due to how often it’s seen mating on umbellifers
  • Despite its bright warning colors, it’s harmless to humans
  • Its soft, flexible elytra allow it to fly easily between flowers
See also  Aspen Leaf-rolling Weevil (Byctiscus populi)

📸 Observation Tips

  • Visit wildflower meadows or field margins in July and August
  • Look for them on hogweed, yarrow, wild carrot, or Queen Anne’s lace
  • They are often abundant and easy to photograph

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