Phycosoma
female P. martinae from Okinawa
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Class:	Arachnida
Order:	Araneae
Infraorder:	Araneomorphae
Family:	Theridiidae
Genus:	Phycosoma O. Pickard-Cambridge, 1879[1]
Type species
P. oecobioides O. Pickard-Cambridge, 1880
Species
28, see text
Synonyms[1]
Trigonobothrys Simon, 1889[2]

Phycosoma is a genus of comb-footed spiders that was first described by Octavius Pickard-Cambridge in 1880.^[3]

As of May 2024^[update] it contains twenty-eight species, found worldwide:^[1]

• Phycosoma aheneum (Dyal, 1935) – Pakistan
• Phycosoma altum (Keyserling, 1886) – Mexico to Brazil. Introduced to Hawaii
• Phycosoma amamiense (Yoshida, 1985) – Russia (Far East), China, Korea, Japan (mainland, Ryukyu Is.)
• Phycosoma corrugum Gao & Li, 2014 – China
• Phycosoma crenatum Gao & Li, 2014 – China
• Phycosoma diaoluo Zhang & Zhang, 2012 – China
• Phycosoma digitula Zhang & Zhang, 2012 – China
• Phycosoma excisum (Simon, 1889) – Madagascar
• Phycosoma flavomarginatum (Bösenberg & Strand, 1906) – China, Korea, Japan
• Phycosoma hainanense (Zhu, 1998) – China, Laos
• Phycosoma hana (Zhu, 1998) – China
• Phycosoma inornatum (O. Pickard-Cambridge, 1861) – Europe, Turkey, Azerbaijan
• Phycosoma jamesi (Roberts, 1979) – Jamaica, Panama
• Phycosoma japonicum (Yoshida, 1985) – Korea, Japan
• Phycosoma labiale (Zhu, 1998) – China
• Phycosoma ligulaceum Gao & Li, 2014 – China
• Phycosoma lineatipes (Bryant, 1933) – USA to Brazil
• Phycosoma martinae (Roberts, 1983) – Seychelles, India, China, Korea, Japan (Ryukyu Is.), Philippines
• Phycosoma menustya (Roberts, 1983) – Seychelles
• Phycosoma molle (Simon, 1903) – Equatorial Guinea
• Phycosoma mustelinum (Simon, 1889) – Russia (Far East), China, Korea, Japan, Indonesia (Krakatau)
• Phycosoma nigromaculatum (Yoshida, 1987) – China, Taiwan, Japan, Ryukyu Is.
• Phycosoma oecobioides O. Pickard-Cambridge, 1880 (type) – New Zealand (mainland, Chatham Is.)
• Phycosoma sinicum (Zhu, 1992) – China, Vietnam
• Phycosoma spundana (Roberts, 1978) – Seychelles
• Phycosoma stellare (Zhu, 1998) – China
• Phycosoma stictum (Zhu, 1992) – China
• Phycosoma stigmosum Yin, 2012 – China

• List of Theridiidae species

• Zhu, M. S. (1998). Fauna Sinica: Arachnida: Araneae: Theridiidae. Science Press, Beijing. p. 436.
• Song, D. X.; Zhu, M. S.; Chen, J. (1999). The spiders of China. Hebei Science and Technology Publishing House, Shijiazhuang. p. 640.
• Yoshida, H. (2002). "A revision of the Japanese genera and species of the subfamily Hadrotarsinae (Araneae: Theridiidae)". Acta Arachnologica. 51: 7–18. doi:10.2476/asjaa.51.7.
• Zhang, F.; Zhang, B. S. (2012). "Spiders of the genus Phycosoma O. P.-Cambridge, 1879 (Araneae: Theridiidae) from Hainan Island, China". Zootaxa. 3339: 30–43. doi:10.11646/zootaxa.3339.1.2.

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