Trogus vulpinus

Classification

Pronunciation

How to pronounce Trogus vulpinus: /ˈtroʊɡəs vʊlˈpaɪnəs/

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Summary

Trogus vulpinus is a reddish Eastern parasitoid wasp species that specializes in parasitizing the caterpillars of swallowtail butterflies. It has been restored from synonymy with Trogus pennator and is characterized by specific morphological traits.

Physical Characteristics

Body length of 14–18 mm (0.55–0.71 in); conical scutellum; concave apical edge of the clypeus; and rectangular block-like abdominal segments due to thick edges and deep cuts.

Identification Tips

Identified by a high, conical scutellum, the supra-antennal area with two developed denticles, and a prominent ridge separating the dorsal and lateral surfaces of the fifth tergite in females. Often confused with Trogus pennator.

Habitat

Found in various habitats where swallowtail butterflies are present.

Distribution

Eastern United States and extreme southeastern Canada.

Diet

Parasitic, targeting the larvae and pupae of swallowtail butterflies (Papilionidae).

Life Cycle

One egg is laid per larva, with emergence occurring after passing through the host's life cycle.

Reproduction

Females oviposit in the caterpillars of swallowtail butterflies, notably within the tribes Graphiini and Papilionini.

Ecosystem Role

Acts as a parasitoid, influencing the populations of swallowtail butterfly larvae.

Collecting Methods

  • Hand collecting of caterpillars
  • Sweep netting in areas with abundant swallowtail butterflies

Preservation Methods

  • Pinning specimens
  • Ethanol preservation for genetic studies

Similar Taxa

Misconceptions

Often misidentified as Trogus pennator due to overlapping features and photographs.

Tags

  • Hymenoptera
  • Parasitoid Wasp
  • Trogus vulpinus
  • Insect
  • Biology
  • Entomology