Efferia pogonias

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Efferia pogonias
Efferia pogonias.jpg
A female Efferia pogonias perched on vegetation in Connecticut, USA
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Diptera
Family: Asilidae
Genus: Efferia
Species:
E. pogonias
Binomial name
Efferia pogonias
(Wiedemann, 1821)
Synonyms [1]
  • Asilus dascyllus Walker, 1849
  • Asilus pogonias Wiedemann, 1821
  • Dasypogon barbatus Fabricius, 1805
  • Erax rufibarbis Macquart, 1838
  • Proctacanthus virginianus Wulp, 1882

Efferia pogonias is a species of robber fly in the subfamily Asilinae. [1] [2] Sometimes referred to as the yellow-bearded hammertail, [3] [4] it is endemic to the eastern United States, where it occurs from Maine to Georgia in the east, and westward at least to Minnesota and Texas; records from Florida may not be valid. [2] [3] [5] [6] This species prefers open and dry conditions, including sandy locations inland. [7] It is active from May to October, but activity peaks in fall, especially September. [3] [5] [6] Females lay their eggs in soil. [3]

Measuring 16–30 mm (0.63–1.18 in) in length, the species is a deep, dark brown across its body, with darkened wings and very dark legs; the tibiae may have a dark red tinge. [3] [6] The mystax or "beard" of setae on the face is prominent and yellowish in color. The last two abdominal segments (numbers 6 and 7) are bright white in males. On females, the ovipositor is dark and somewhat rounded. [6] Like other robber flies in the genus Efferia , they are ambush predators, lying still on soil or low vegetation before sallying out to capture prey. [8]

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References

  1. 1 2 "Efferia pogonias Report". Integrated Taxonomic Information System. Retrieved 2018-05-04.
  2. 1 2 "Efferia pogonias (Wiedemann, 1821)". GBIF. Retrieved 13 August 2024.
  3. 1 2 3 4 5 "Yellow-bearded Hammertail". BugGuide.Net. Retrieved 13 August 2024.
  4. "Common Names". Robber Flies (in Latin). Retrieved 13 August 2024.
  5. 1 2 "Efferia pogonias". iNaturalist. Retrieved 13 August 2024.
  6. 1 2 3 4 "Efferia". Robber Flies of the Southeast. 1 September 2021. Retrieved 13 August 2024.
  7. "Yellow-bearded Hammertail (Efferia pogonias)". Maryland Biodiversity Project. Retrieved 13 August 2024.
  8. Dennis, D S; Lavigne, ~ R J; Bullmgton~, S W (1 January 1986). "(PDF) Ethology of Efferia cressoni with a review of the comparative ethology of the genus (Diptera: Asilidae)". Proceedings of the Entomological Society of Washington. 88 (1). Entomological Society of Washington: 42–55. Retrieved 13 August 2024.