Cordulegaster sayi 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Arthropoda Insecta Odonata Cordulegastridae

Scientific Name: Cordulegaster sayi
Species Authority: Selys, 1854
Common Name(s):
English Say's Spiketail
Zoraena sayi (Selys, 1854)
Taxonomic Source(s): Schorr, M. and Paulson, D. 2013. World Odonata List. Tacoma, Washington, USA Available at: (Accessed: 20 November 2013).

Assessment Information [top]

Red List Category & Criteria: Vulnerable B2ab(iii) 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)
This species has a very limited range and is threatened by development. Its habitat is more specialized and vulnerable then co-existing gomphids like G. geminatus and G. hodgesi. It has a specific combination of adjacent habitats needed for larvae and adults. Probably hundreds of larvae per site, but relatively few are mature. Too many people could trample fragile seepages. The adult stage is only one month; nymphal stage several years. Nymphs are confined to silt which could be scoured by runoff. Formerly a large colony was known in Gainesville, Florida, but it has been reduced to low densities. Area of occupancy less than 2,000 km²; known localities are few and fragmented; and certain populations (Gainesville) are declining.
Previously published Red List assessments:
1996 Vulnerable (VU)
1994 Endangered (E)
1990 Endangered (E)
1988 Endangered (E)
1986 Vulnerable (V)
1983 Vulnerable (V)

Geographic Range [top]

Range Description: Endemic to the United States. Known from 20 populations in Florida and southeastern Georgia comprising a total of 14 county counties.
Countries occurrence:
United States (Florida, Georgia)
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Current population size is unknown.
Current Population Trend: Decreasing
Additional data:

Habitat and Ecology [top]

Habitat and Ecology: Silt-bottomed trickles in hardwood forest with weedy fields nearby (Dunkle and Westfall 1982).
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): Housing and urban development.

Conservation Actions [top]

Conservation Actions: Most known sites are publicly owned. In Florida, the species occurs in two state parks, a state preserve, two state forests, and a military base. In Georgia occurs in a state park and a military reservation.

Citation: Abbott, J.C. 2007. Cordulegaster sayi. The IUCN Red List of Threatened Species 2007: e.T59707A11981751. . Downloaded on 26 November 2015.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please provide us with feedback so that we can correct or extend the information provided