Acisoma ascalaphoides 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Arthropoda Insecta Odonata Libellulidae

Scientific Name: Acisoma ascalaphoides Rambur, 1842
Common Name(s):
English Littoral Pintail, Grizzled Pintail
Acisoma inflata Selys, 1882
Acisoma panorpoides ssp. ascalaphoides Rambur, 1842
Taxonomic Source(s): Schorr, M. and Paulson, D. 2016. World Odonata List. Revision 21 June 2016. Tacoma, Washington, USA Available at:
Taxonomic Notes: The type locality for Acisoma panorpoides ascalaphoides is Madagascar. It is not currently certain that the populations of Madagascar and mainland Africa are similar (K. Schütte in Dijkstra and Boudot 2010), so it is likely that the present subspecific name will have to change in the future for Africa.

This species previously appeared on the IUCN Red List as Acisoma panorpoides ssp. ascalaphoides but it has now been promoted to Acisoma ascalaphoides.

Assessment Information [top]

Red List Category & Criteria: Endangered B2ab(ii,iii,iv,v) ver 3.1
Year Published: 2017
Date Assessed: 2016-07-12
Assessor(s): Schütte, K.
Reviewer(s): Razafindranaivo, V & Solofoniaina, A
Facilitator/Compiler(s): Maiz-Tome, L.
This species is endemic to Madagascar where it known from three littoral forest sites: two in the south east and one from the northern east coast. It has an extent of occurrence (EOO) of 5,884 km² and an area of occupancy (AOO) of 16 km². The species experiences continuing decline in its habitat quality and extent due to ongoing deforestation in the north east and mining activities in the south east parts of its range. Based on these threats 2-3 locations have been identified. Therefore, the species is assessed as Endangered.
Previously published Red List assessments:

Geographic Range [top]

Range Description:The species is endemic to Madagascar where it is known from one locality in the north east coast in Voloina and two localities in Mandena and Sainte Luce in the south east part of the island.
Countries occurrence:
Additional data:
Estimated area of occupancy (AOO) - km2:16
Number of Locations:3-4
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:Population size are trends are unknown.
Current Population Trend:Unknown
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:Known only from littoral forest fragments at the southern (Tolagnaro, formerly Fort Dauphin) and northern (Voloina) ends of Madagascar’s east coast. Only about 10% of the original cover of these forests remains, all in small patches of which only 13% are protected (Consiglio et al. 2006). The species may occur elsewhere along the coast, but as it seems restricted to this habitat, could well be under threat (Schütte & Razafindraibe 2007). The larvae are possibly adapted to more acidic water than A. attenboroughi sp. nov.
Systems:Terrestrial; Freshwater

Threats [top]

Major Threat(s): The species is threatened by deforestation in the north and mining activities in the south within the mining offset/conservation sites.

Conservation Actions [top]

Conservation Actions: No conservation actions are known. The species doesn't occur within protected areas in the north. In the south the species is found within the mining offset conservation sites.

Classifications [top]

1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland
5. Wetlands (inland) -> 5.1. Wetlands (inland) - Permanent Rivers/Streams/Creeks (includes waterfalls)
1. Land/water protection -> 1.1. Site/area protection

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
In-Place Species Management
In-Place Education
5. Biological resource use -> 5.3. Logging & wood harvesting -> 5.3.1. Intentional use: (subsistence/small scale) [harvest]
♦ timing:Ongoing    

9. Pollution -> 9.2. Industrial & military effluents -> 9.2.2. Seepage from mining
♦ timing:Ongoing    

1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.5. Threats
3. Monitoring -> 3.1. Population trends
3. Monitoring -> 3.4. Habitat trends

Bibliography [top]

Consiglio, T., Schatz, G.E., Lowry II, P.P., Rabenantoandro, J., Rogers, Z.S., Rabevohitra, R. and Rabehevitra, D. 2006. Deforestation and plant diversity of Madagascar's littoral forests. Conservation Biology 20(6): 1799-803.

Consiglio, T., Schatz, G.E., McPherson, G., Lowry II, P.P., Rabenantoandro, J., Rogers, Z.S., Rabevohitra, R. & Rabehevitra D. 2006. Deforestation and plant diversity of Madagascar’s littoral forests. Conservation Biology 20: 1799–1803.

IUCN. 2017. The IUCN Red List of Threatened Species. Version 2017-2. Available at: (Accessed: 14 September 2017).

Mens LP, Schütte K, Stokvis FR & Dijkstra K-DB. 2016. Six, not two, species of Acisoma pintail dragonfly (Odonata: Libellulidae). Zootaxa 4109(2): 153-172.

Schütte K. & P. Razafindraibe. 2007. Checklist of dragonflies of the littoral forests near Tolagnaro (Fort Dauphin). Biodiversity, ecology and conservation of littoral ecosystems in southeastern Madagascar, Tolagnaro (Fort Dauphin). Ganzhorn J.U., Goodman S.M., Vincelette M. (eds.) Smithsonian Institution, Monitoring and Assessment of Biodiversity Series 11.: 163-165.

Citation: Schütte, K. 2017. Acisoma ascalaphoides. The IUCN Red List of Threatened Species 2017: e.T13186336A98873386. . Downloaded on 21 June 2018.
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