Ryuthela secundaria

Ryuthela
	Female Ryuthela nishihirai from Okinawa
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Class:	Arachnida
Order:	Araneae
Suborder:	Mesothelae
Family:	Heptathelidae
Genus:	Ryuthela; Haupt, 1983
Type species
	Heptathela nishihirai; Haupt, 1979
Species
	See text.

Ryuthela is a spider genus in the family Heptathelidae.^[1] This genus, as well as their closest relatives, Heptathela, formed when land masses from present-day Japan separated from the rest of Asia, forming islands in the late Miocene. Speciation of Ryuthela and Heptathela also occurred during this time, because of the further separation of islands, causing allopatric speciation.

They exhibit intraspecific variation in female genitalia despite being morphologically alike. Male spiders live only a few weeks after reaching maturity whereas female spiders can live up to 10 to 20 years (Huber, T. & Haug, C., 2021). ^[2]

Species list

Ryuthela iheyana Ono, 2002 — Ryukyu Islands
Ryuthela ishigakiensis Haupt, 1983 — Ryukyu Islands
Ryuthela nishihirai (Haupt, 1979) — Okinawa
Ryuthela sasakii Ono, 1997 — Ryukyu Islands
Ryuthela tanikawai Ono, 1997 — Ryukyu Islands
Ryuthela owadai Xu, 2017 — Tokashijima island
Ryuthela secundaria Xu, 2017— Okinawajima island

References

^ "Family Heptathelidae Kishida, 1923 (genus list)". World Spider Catalog. Natural History Museum Bern. Retrieved 2023-12-14.
^ Xu, Xin; Liu, Fengxiang; Chen, Jian; Ono, Hirotsugu; Agnarsson, Ingi; Li, Daiqin; Kuntner, Matjaž (9 January 2016). "Pre-Pleistocene geological events shaping diversification and distribution of primitively segmented spiders on East Asian margins". Journal of Biogeography. 43 (5): 1004–1019. doi:10.1111/jbi.12687. S2CID 54520728.

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[1] "Family Heptathelidae Kishida, 1923 (genus list)". World Spider Catalog. Natural History Museum Bern. Retrieved 2023-12-14.

[2] Xu, Xin; Liu, Fengxiang; Chen, Jian; Ono, Hirotsugu; Agnarsson, Ingi; Li, Daiqin; Kuntner, Matjaž (9 January 2016). "Pre-Pleistocene geological events shaping diversification and distribution of primitively segmented spiders on East Asian margins". Journal of Biogeography. 43 (5): 1004–1019. doi:10.1111/jbi.12687. S2CID 54520728.

[1]

[2]

Ryuthela

Female Ryuthela nishihirai from Okinawa
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Class:	Arachnida
Order:	Araneae
Suborder:	Mesothelae
Family:	Heptathelidae
Genus:	Ryuthela Haupt, 1983
Type species
Heptathela nishihirai Haupt, 1979
Species
See text.

Species list

See also

References