Cordulegaster sayi

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

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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

Assessor/s:

Abbott, J.C.

Reviewer/s:

Donnelly, N., Suhling, F. & Clausnitzer, V. (Odonata Red List Authority)

Contributor/s:

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.

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.

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. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 19 June 2013.
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