Sympetrum parvulum

Sympetrum parvulum
	Female
	Male
Conservation status
	; Least Concern (IUCN 3.1)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Odonata
Infraorder:	Anisoptera
Family:	Libellulidae
Genus:	Sympetrum
Species:	S. parvulum
Binomial name
	Sympetrum parvulum; (Bartenev, 1912)
Synonyms
	Sympetrum eroticoides Oguma, 1922 ; Sympetrum fuscousus Kobayashi, 1941 ; Sympetrum parvum Tada, 1942 ; Sympetrum ruptum Needham,1930 ; Thecodiplax parvula Bartenev, 1912;

Sympetrum parvulum is a species of libellulid dragonfly. They range from 2.2 to 2.6 cm long.^[2]

Habitat

S. parvulum is found in China, the Russian Far East, Japan, Korea, and the Matsu Islands in Taiwan.^[3] The dragonflies are inhabitants of vegetation-rich marshes and adjacent forest fringes,^[2] as well as shaded areas of paddy fields.^[4]

Behaviour

Males are territorial.^[2] In some dragonflies, the male escorts the female while she deposits her eggs by holding on to her head with his abdominal legs. This is called the tandem behaviour. The other kind of protective behaviour practised by some dragonfly males is simply called guarding, wherein the male stays close to, but not actually touching, the female, and acts in an aggressive manner to other males, similar to the way he protects his territory. Which of these escort behaviours the males adopt usually varies my species, but in Sympetrum parvulum, both protective behaviours are reported. A 1979 paper published in Researches on Population Ecology studied S. parvulum's escort behaviour in detail.^[5]

Conservation

Sympetrum parvulum was assessed as "Least Concern" on the IUCN red list in 2007.^[1]

References

^ ^a ^b Wilson, K. D. P. (2009). "Sympetrum parvulum". IUCN Red List of Threatened Species. 2009: e.T167202A6314671.
^ ^a ^b ^c Naraoka, H. (1 Dec 2001). "Post-copulatory behaviour in the dragonfly Sympetrum parvalum Bartenef" (PDF). Odonatologica. 30 (4): 411–22.
^ Lee, I-Lung; Ma, Cheng-Han; Chou, Yung-Chun; Hu, Fang-shuo (2024). "Sympetrum parvulum (Bartenev, 1913) (Odonata: Libellulidae): A newly recorded dragonfly from Matsu Islands, Taiwan". Taiwanese Journal of Entomological Studies. 9 (3): 29–32. doi:10.5281/ZENODO.13839269. ISSN 2521-4012.
^ Watanabe, M.; Taguchi, M. (1 Sep 1988). "Community structure of coexisting Sympetrum species in the central Japanese paddy fields in autumn" (PDF). Odonatologica. 17 (3): 249–262.
^ Uéda, Tetsuyuki (1979). "Plasticity of the reproductive behaviour of a dragonfly, Sympetrum parvulum Barteneff, with reference to the social relationship of males and the density of territories". Researches on Population Ecology. 21: 135–152. doi:10.1007/BF02512643.

[iucn-1] Wilson, K. D. P. (2009). "Sympetrum parvulum". IUCN Red List of Threatened Species. 2009: e.T167202A6314671.

[:0-2] Naraoka, H. (1 Dec 2001). "Post-copulatory behaviour in the dragonfly Sympetrum parvalum Bartenef" (PDF). Odonatologica. 30 (4): 411–22.

[3] Lee, I-Lung; Ma, Cheng-Han; Chou, Yung-Chun; Hu, Fang-shuo (2024). "Sympetrum parvulum (Bartenev, 1913) (Odonata: Libellulidae): A newly recorded dragonfly from Matsu Islands, Taiwan". Taiwanese Journal of Entomological Studies. 9 (3): 29–32. doi:10.5281/ZENODO.13839269. ISSN 2521-4012.

[4] Watanabe, M.; Taguchi, M. (1 Sep 1988). "Community structure of coexisting Sympetrum species in the central Japanese paddy fields in autumn" (PDF). Odonatologica. 17 (3): 249–262.

[5] Uéda, Tetsuyuki (1979). "Plasticity of the reproductive behaviour of a dragonfly, Sympetrum parvulum Barteneff, with reference to the social relationship of males and the density of territories". Researches on Population Ecology. 21: 135–152. doi:10.1007/BF02512643.

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