|Scientific Name:||Ophiogomphus acuminatus|
|Species Authority:||Carle, 1981|
|Red List Category & Criteria:||Near Threatened ver 3.1|
|Reviewer/s:||Donnelly, N., Suhling, F. & Clausnitzer, V. (Odonata Red List Authority)|
This species is very localized and like other Ophiogomphus is probably fairly susceptible to pollution, siltation and damming. There are likely to be hundreds to thousands occurring on each stream, but the species is declining: Ophiogomphus larvae are sensitive to flood scouring as well as pollution. 15+ years of observation support this decline. Extent of occurrence is less than 5,000 km² and area of occupancy is less than 550 km²; the species is known from a total of 31 localities, including eight counties of Tennessee, one in Alabama, and possible larvae in two counties in Kentucky. Other localities were searched for by Tennessen (1994). Larvae are easily washed away by flood scouring. Larvae susceptible to flood-scouring, siltation, and pollutants. The species nearly meets the requirements for Endangered under criterion B and is therefore assessed as Near Threatened.
|Range Description:||Endemic to the United States. Known from 11 counties in the states of Alabama and Tennessee. The species may also occur in Kentucky.|
Native:United States (Alabama, Tennessee)
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||Current population size is unknown.|
|Habitat and Ecology:||Sparse gravel pockets in fissures of a rocky stream bed (Carle 1981). Second order streams that are mostly shaded, with relatively stable substrates and riffle areas (Tennessen 1994). Probable two year life cycle.|
|Major Threat(s):||The larval habitat, consisting of chert pebble debris in limestone bedrock streams (Donnelly pers. comm.) is very specialized.|
|Conservation Actions:||Short sections of a few streams are protected by the Natchez Trace National Parkway, and the Alabama locality is in the Freedom Hills Wildlife Management Area.|
Baillie, J. and Groombridge, B. 1996. 1996 IUCN Red List of Threatened Animals. International Union for Conservation of Nature, Gland, Switzerland.
Bick, G.H. 1983. Odonata at risk in conterminous United States and Canada. Odonatologica 12(3): 209–226.
Carle, F.L. 1981. A new species of Ophiogomphus from eastern North America, with a key to the regional species (Anisoptera: Gomphidae). Odonatologica 10(4): 271–278
Groombridge, B. (ed.). 1994. 1994 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.
IUCN. 1990. IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.
IUCN. 2007. 2007 IUCN Red List of Threatened Species. Available at: www.iucnredlist.org. (Accessed: 12th September 2007).
Louton, J.A. 1982. A new species of Ophiogomphus (Insecta: Odonata: Gomphidae) from the western highland rim in Tennessee. Proc. Biol. Soc. Washington 95:(1): 198-202
Paulson, D.R. and Dunkle, S.W. 1996. Common names of North American Dragonflies and Damselflies, adopted by The Dragonfly Society of the Americas. Argia. 8(2):appendix.
Paulson, D.R. and Dunkle, S.W. 1999. A Checklist of North American Odonata. Slater Museum of Natural History University of Puget Sound Occasional Paper Number 56.
Tennessen, K. 1994. Checklist of Odonata in Tennessee. Personal letter to D. Withers, TN Heritage Program, 15 May 1994.
Tennessen, K. 1994. Status survey for Gomphus sandrius and Ophiogomphus acuminatus (Insecta: Odonata: Gomphidae). USFWS and TN Wildlife Resource Agency, Coop. Agreement No. 14-16-0004-89-953, Work Order 92–10.
|Citation:||Abbott, J.C. 2007. Ophiogomphus acuminatus. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <www.iucnredlist.org>. Downloaded on 21 April 2014.|
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