Map_thumbnail_large_font

Mortonagrion hirosei

Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_onStatus_vu_offStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_off

Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA ARTHROPODA INSECTA ODONATA COENAGRIONIDAE

Scientific Name: Mortonagrion hirosei
Species Authority: Asahina, 1972
Common Name(s):
English Four-spot Midget

Assessment Information [top]

Red List Category & Criteria: Near Threatened ver 3.1
Year Published: 2013
Date Assessed: 2011-01-19
Assessor(s): Wilson, K.D.P. & Reels, G.
Reviewer(s): Dow, R.A., Hämäläinen, M., Choong, C., Manh, C.D., Zhang, H., Phan, Q., Tong, X., Yu, X. & Brooks, E.
Justification:
This species is known from 5-7 widespread locations in coastal regions that are under potential threat from development. However two or three locations are now in protected areas, so this species has been downgraded to the Near Threatened category.
History:
2006 Vulnerable
2006 Vulnerable (IUCN 2006)
1996 Endangered
1994 Endangered (Groombridge 1994)
1990 Endangered (IUCN 1990)
1988 Endangered (IUCN Conservation Monitoring Centre 1988)
1986 Endangered (IUCN Conservation Monitoring Centre 1986)

Geographic Range [top]

Range Description: The species is confined to the coastal regions of Hong Kong, Taiwan, and the east coast of Honshu, Japan. There is a single record from an inland site in Gutoushan, Guangdong, China.
Countries:
Native:
China (Guangdong); Hong Kong; Japan; Taiwan, Province of China
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This is a very localised species but often abundant where it occurs.
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: The majority of the populations are associated with brackish marshes, but populations have also been found in coastal freshwater streams. In Hong Kong the adults have been recorded in mangrove habitat, but the larvae have never been found there. Larvae of Mortonagrion hirosei have a relatively high survival rate in brackish water of saline concentrations of up to 15%.
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): This species is principally threatened due to habitat loss due to coastal development, including fisheries and urbanisation.

Conservation Actions [top]

Conservation Actions: In Japan there are conservation management plans in progress for this species. However the majority of mainland sites have no form of protection. More surveys are needed particularly along the coast of southern and eastern China to determine the full distribution of this species. More data is needed on its habitat requirements.

Citation: Wilson, K.D.P. & Reels, G. 2013. Mortonagrion hirosei. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 02 October 2014.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please fill in the feedback form so that we can correct or extend the information provided