Map_thumbnail_large_font

Cordulegaster sayi

Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_onStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_off

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
Synonym(s):
Zoraena sayi (Selys, 1854)

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)
Justification:
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.
History:
1996 Vulnerable
1994 Endangered (Groombridge 1994)
1990 Endangered (IUCN 1990)
1988 Endangered (IUCN Conservation Monitoring Centre 1988)
1986 Vulnerable (IUCN Conservation Monitoring Centre 1986)

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:
Native:
United States (Florida, Georgia)
Range Map: Click here to open the map viewer and explore range.

Population [top]

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

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. Version 2014.3. <www.iucnredlist.org>. Downloaded on 27 November 2014.
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