Coryphagrion grandis


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Coryphagrion grandis
Species Authority: Morton, 1924
Common Name(s):
English East Coast Giant

Assessment Information [top]

Red List Category & Criteria: Vulnerable B2ab(ii,iii) ver 3.1
Year Published: 2010
Date Assessed: 2006-02-28
Assessor(s): Clausnitzer, V.
Reviewer(s): Tchibozo, S., Ogbogu, S.S. & Smith, K. (IUCN Freshwater Biodiversity Unit)
The species is listed as Vulnerable in view of its restricted habitat requirements (dense coastal forest with phytotelmata) and highly disjunct distribution in the fragmented coastal forests of Kenya and Tanzania (see also Clausnitzer and Lindeboom 2002, Clausnitzer 2003). The coastal forests of eastern Africa were once a continuous belt from southern Somalia down to Mozambique. Today these forests only exists in tiny and highly fragmented patches. Coryphagrion grandis depends on this habitat and the remaining populations are thus highly isolated. It is also affected by genetic flow and re-occupation of areas, e.g., after severe droughts is hindered (e.g., Groenveld 2003). Even without further forest destruction, the survival of all populations in future seems unlikely, unless corridors are constructed. It is listed as Vulnerable.
2006 Vulnerable

Geographic Range [top]

Range Description: The species has been recorded from coastal forests and lower slopes of Eastern Arc mountains in Kenya and Tanzania, for exact location of remaining coastal forests, refer to Burgess and Clarke (2000).
Kenya; Tanzania, United Republic of
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: No information available.
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: It inhabits coastal forests, depends on phytotelmata for breeding and needs dense forest understory.
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): Destruction of coastal forest and coastal thicket caused by agriculture and wood extraction are threats to the species. It is though to be affected by drought due to climate change too.

Conservation Actions [top]

Conservation Actions: No information available but research into population numbers and range, conservation measures, and trends/monitoring of the species would be valuable. Habitat and site-based actions are also required.

Bibliography [top]

Dijkstra, K.-D.B. and Clausnitzer, V. 2005. An annotated checklist of the dragonflies (Odonata) of eastern Africa, with critical lists for Ethiopia, Kenya, Malawi, Tanzania and Uganda, new records, taxonomic notes and descriptions of new species. in prep.

IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.3). Available at: (Accessed: 2 September 2010).

Citation: Clausnitzer, V. 2010. Coryphagrion grandis. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 04 September 2015.
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