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Pseudagrion niloticum

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA ARTHROPODA INSECTA ODONATA COENAGRIONIDAE

Scientific Name: Pseudagrion niloticum
Species Authority: Dumont, 1978
Taxonomic Notes: Kenyan records are formerly confused with P. massaicum.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2010
Date Assessed: 2009-05-01
Assessor(s): Boudot, J.-P., Clausnitzer, V., Suhling, F. & Dijkstra, K.-D.B.
Reviewer(s): Dijkstra, K.-D.B., Clausnitzer, V., Suhling, F., Samways, M., Samraoui, B., Boudot, J.P., Kipping, J. (Odonata Red List Authority) & Allen, D. (IUCN Freshwater Biodiversity Unit)
Justification:
This is a widespread species with no known major widespread threats that is unlikely to be declining fast enough to qualify for listing in a threatened category. It is therefore assessed as Least Concern.

This species is listed as Endangered in the northern Africa region: EN (B2ab(i,ii,iii,iv,v). It was reported to be common in Egypt more than thirty years ago (Dumont 1973). However, no living specimens have been recently collected in Egypt or are available for study so this assertion probably referred to the times where the species was really collected for identification purposes (1912-1936).

Only an overall set of eight old records (from before 1936) is available for Egypt. Five of these localities are likely to be lost, as they corresponded to the outskirts of Cairo, now strongly urbanized and heavily polluted. The three other sites were within irrigated agricultural area; irrigation water in Egypt is salty and rich in heavy metals. The species was not recorded during a recent short study on the Nile system in 1988 (Dumont and Fossati 1990), therefore there is no present confirmation of the survival of this species in Egypt. Sudanese records are more recent than the Egyptian ones but were obtained 25 years ago (1982) (Dumont and Martens 1984, El Amin el Raya and El Zubeir 1984). It is known Sudanese and Egyptian localities are about 1,100 km apart, therefore no spontaneous recolonisation seems possible due to present-day management of the Nile Valley.

Its estimated Extent of Occurrence is less than 20,000 km² based on known records, but all of these are old and many of these sites are now likely lost. Area of occupancy is likely to be less than 500 km², perhaps much less. The northern African population is isolated from the southern populations. No data on population size. It is assessed as Endangered, but may actually be Critically Endangered (or possibly Regionally Extinct) and more data are needed to confirm this.
History:
2006 Least Concern (IUCN 2006)
2006 Least Concern

Geographic Range [top]

Range Description: The species has a range that extends from eastern Africa, and Somalia to the Nile delta in Egypt via the whole Nile system, through Ethiopia and Sudan.

In eastern Africa, it has been recorded in Kenya, Tanzania, Uganda, Malawi and Burundi: widespread and common in streams and rivers in Kenya.

In northern Africa, the species is known only from Egypt.

In northeastern Africa, the species is recorded from Egypt, Ethiopia, Kenya, Sudan and Somalia, occurrence in Djibouti and Eritrea assumed.
Countries:
Native:
Egypt; Ethiopia; Kenya; Somalia; South Sudan; Sudan
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: In northern Africa, although the species was said to be common in Egypt (Dumont 1973), only eight old records have been traced in this country (the last one was published in 1936). Five of these localities are near Cairo and are probably now lost due to urbanization and water pollution. The three other localities are in irrigated agricultural area and no indication of their survival is available. The species was not recorded during a recent short study on the Nile system (Dumont and Fossati 1990). Sudan records are more recent (1982) (Dumont and Martens 1984).
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: In eastern and northeastern Africa, it is present in rivers and streams in savannah and bush.

In northern Africa, the species occurs in stream waters, from large rivers to small brooks in desert to semi-desert environment.
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): Urbanization, water pollution, over-irrigation, drought and desiccation of rivers are the main threats to the species.

Conservation Actions [top]

Conservation Actions: Control of urbanization as well as of water consumption and pollution through policy-based actions and increasing awareness. Research into population numbers and range, biology and ecology, habitat status, threats, conservation measures, and trends/monitoring of this species would be valuable. Habitat and site-based actions are also required.

Citation: Boudot, J.-P., Clausnitzer, V., Suhling, F. & Dijkstra, K.-D.B. 2010. Pseudagrion niloticum. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 29 July 2014.
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