Hylogomphus adelphus

Hylogomphus adelphus
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Arthropoda
Clade: Pancrustacea
Class: Insecta
Order: Odonata
Infraorder: Anisoptera
Family: Gomphidae
Genus: Hylogomphus
Species:
H. adelphus
Binomial name
Hylogomphus adelphus
(Sélys, 1858)

Hylogomphus adelphus, the mustached clubtail, is a species of dragonfly in the family Gomphidae. It is found in south-eastern Canada and the eastern United States.

Prior to taxonomic revision in 2018, this species was known as Gomphus adelphus.[2]

Description

The mustached clubtail is a black and yellow dragonfly with green or turquoise eyes and characteristically black-marked face. The abdomen has yellow triangles on the upper surface and ends in a moderately wide, mostly black "club". Males and females are similar, although the female has more yellow on the abdomen.[3]

Lateral view
Face, showing the "mustache" marks
Dorsal view

Etymology

The genus name Hylogomphus comes from hylo ("wood" or "forest") and Gomphus ("bolt" or "nail"). The specific epithet adelphus ("kinsman") is a reference to a presumed relationship with Gomphurus fraternus.[2]

The common name "mustached clubtail" refers to the conspicuous black markings on the face, reminiscent of a mustache.[2]

Behavior

This species is most active in the afternoon.[4] It perches on rocks and overhanging plants along the edges of rivers and can also be found away from the water in nearby sunny clearings.[3]

Distribution

The mustached clubtail can be found from the southern Appalachians north to Nova Scotia, west into Ontario, and south into Wisconsin and Michigan.[3]

Habitat

Mustached clubtails inhabit streams and rivers with a variety of flow, often with rocky riffles. They may also inhabit lakes with suitable shoreline.[3]

References

  1. ↑ Paulson, D.R. (2017) [amended version of 2018 assessment]. "Gomphurus ventricosus". IUCN Red List of Threatened Species. 2017 e.T51178871A125532955. doi:10.2305/IUCN.UK.2017-3.RLTS.T51178871A125532955.en. Retrieved 2026-07-23.
  2. 1 2 3 Paulson, Dennis R.; Dunkle, Sidney W.; Johnson, Jim T. (2024). A Checklist of North American Odonata (PDF) (Report). Retrieved 2026-07-20.
  3. 1 2 3 4 Paulson, Dennis (2011). Dragonflies and Damselflies of the East. Princeton Field Guides.
  4. ↑ LeGrand, Harry E.; Howard, Thomas E.; Petranka, John; Shields, Mark A. (2025). "The Odonata of North Carolina, Part 2: Anisoptera". Bulletin of American Odonatology. 14 (3): 79–167.
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