Gomphus geminatus


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Gomphus geminatus
Species Authority: Carle, 1979
Common Name(s):
English Twin-striped Clubtail
Hylogomphus geminatus Carle, 1979
Taxonomic Notes: Transferred from the genus Hylogomphus to Gomphus as the former is now a subgenus.

Assessment Information [top]

Red List Category & Criteria: Near Threatened ver 3.1
Year Published: 2007
Date Assessed: 2007-03-01
Assessor(s): Abbott, J.C.
Reviewer(s): Donnelly, N., Suhling, F. & Clausnitzer, V. (Odonata Red List Authority)
G. geminatus is endemic to the United States, where it is known from 15 streams in three states. There are probably hundreds to thousands on each stream. The area of occupancy is estimated at less than 2,000 km² and the species occurs in few locations. Current threats are habitat loss due to development and forestry.
1996 Lower Risk/near threatened (Baillie and Groombridge 1996)
1994 Rare (Groombridge 1994)
1990 Rare (IUCN 1990)
1988 Rare (IUCN Conservation Monitoring Centre 1988)
1986 Rare (IUCN Conservation Monitoring Centre 1986)

Geographic Range [top]

Range Description: Endemic to the United States. Known from 10 counties within the states of Alabama, Florida and Georgia.
United States (Alabama, Florida, Georgia)
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Current population is unknown.
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: Clean, sand-bottomed streams.
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): Development and forestry.

Conservation Actions [top]

Conservation Actions: In Florida, large form probably occurs in The Nature Conservancy's Apalachicola Bluffs Sanctuary, smaller form has fair protection in Blackwater River State Forest and Pine Log State Forest.

Citation: Abbott, J.C. 2007. Gomphus geminatus. The IUCN Red List of Threatened Species. Version 2014.3. <>. Downloaded on 29 March 2015.
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