Euglesa subtruncata

Euglesa subtruncata
	Drawing of the left valve internal view of Euglesa subtruncata
	Drawing of the right valve internal view of Euglesa subtruncata
Conservation status
	; Least Concern (IUCN 3.1)
	; Secure (NatureServe)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Order:	Sphaeriida
Family:	Sphaeriidae
Genus:	Euglesa
Species:	E. subtruncata
Binomial name
	Euglesa subtruncata; (Malm, 1855)
Synonyms
	List Cingulipisidium (Potamopisidium) poltavicum Korniushin, 1991 ; Euglesa (Cymatocyclas) supiniformis Pirogov & Starobogatov, 1974 ; Euglesa (Henslowiana) pirogovi Starobogatov, 1984 ; Euglesa (Henslowiana) tenuisculpta Pirogov & Starobogatov, 1975 ; Euglesa (Pseudeupera) alta (Mori, 1938) ; Euglesa (Pseudeupera) altaica (Krivosheina, 1979) ; Euglesa (Pseudeupera) arcidens Krivosheina, 1978 ; Euglesa (Pseudeupera) humerosa Pirogov & Starobogatov, 1975 ; Euglesa (Pseudeupera) humiliumbo Krivosheina, 1978 ; Euglesa (Pseudeupera) mucronata (Clessin, 1876) ; Euglesa (Pseudeupera) ovatorigona (Krivosheina, 1979) ; Euglesa (Pseudeupera) pallida (Gassies, 1855) ; Euglesa (Pseudeupera) parallelodon Krivosheina, 1978 ; Euglesa (Pseudeupera) pirogovi Starobogatov, 1984 ; Euglesa (Pseudeupera) poltavica (Korniushin, 1991) ; Euglesa (Pseudeupera) rotundotrigona Krivosheina, 1978 ; Euglesa (Pseudeupera) starobogatovi Krivosheina, 1978 ; Euglesa (Pseudeupera) subalta Starobogatov & Budnikova, 1985 ; Euglesa (Pseudeupera) subcuneata Krivosheina, 1978 ; Euglesa (Pseudeupera) subtruncata (Malm, 1855) ; Euglesa (Pseudeupera) supiniformis Pirogov & Starobogatov, 1974 ; Euglesa (Pseudeupera) talievi (Starobogatov & Streletzkaja, 1967) ; Euglesa (Pseudeupera) tenuicardo Krivosheina, 1978 ; Euglesa (Pseudeupera) tenuisculpta Pirogov & Starobogatov, 1975 ; Euglesa (Pseudeupera) turgida (Clessin, 1873) ; Euglesa (Pseudeupera) volgensis Pirogov & Starobogatov, 1975 ; Euglesa astrachanica Pirogov & Starobogatov, 1984 ; Euglesa difficilis Pirogov & Starobogatov, 1975 ; Euglesa humerosa Pirogov & Starobogatov, 1975 ; Euglesa subtruncata f. incrassata (Ellis, 1940) ; Euglesa tenuisculpta Pirogov & Starobogatov, 1975 ; Euglesa volgensis Pirogov & Starobogatov, 1975 ; Galileja talievi Starobogatov & Streletzkaja, 1967 ; Neopisidium altaicum Krivosheina, 1979 ; Neopisidium ovatotrigonum Krivosheina, 1979 ; Pisidium (Cyclocalyx) subtruncatum Malm, 1855 ; Pisidium (Eupera) landeroini Germain, 1909 ; Pisidium (Pseudeupera) subtruncatum Malm, 1855 ; Pisidium alpicola Suter, 1889 ; Pisidium apiculatum Sterki, 1922 ; Pisidium marci Sterki, 1909 ; Pisidium masci Ellis, 1962 ; Pisidium mucronatum Clessin, 1876 ; Pisidium overi Sterki, 1913 ; Pisidium pallidum Gassies, 1855 ; Pisidium subtruncatum Malm, 1855 ; Pisidium subtruncatum altum (Mori, 1938) ; Pisidium subtruncatum var. turgidum Clessin, 1873 ; Pseudeupera (Pseudeupera) altaica (Krivosheina, 1979) ; Pseudeupera (Pseudeupera) arcidens (Krivosheina, 1978) ; Pseudeupera (Pseudeupera) astrachanica (Pirogov & Starobogatov, 1984) ; Pseudeupera (Pseudeupera) humerosa (Pirogov & Starobogatov, 1975) ; Pseudeupera (Pseudeupera) humiliumbo (Krivosheina, 1978) ; Pseudeupera (Pseudeupera) mucronata (Clessin, 1876) ; Pseudeupera (Pseudeupera) ovatotrigona (Krivosheina, 1979) ; Pseudeupera (Pseudeupera) pallida (Gassies, 1855) ; Pseudeupera (Pseudeupera) parallelodon (Krivosheina, 1978) ; Pseudeupera (Pseudeupera) poltavica (Korniushin, 1991) ; Pseudeupera (Pseudeupera) recalva (Kuiper, 1960) ; Pseudeupera (Pseudeupera) rotundotrigona (Krivosheina, 1978) ; Pseudeupera (Pseudeupera) starobogatovi (Krivosheina, 1978) ; Pseudeupera (Pseudeupera) subalta (Starobogatov & Budnikova, 1985) ; Pseudeupera (Pseudeupera) subcuneata (Krivosheina, 1978) ; Pseudeupera (Pseudeupera) subtruncata (Malm, 1855) ; Pseudeupera (Pseudeupera) supiniformis (Pirogov & Starobogatov, 1974) ; Pseudeupera (Pseudeupera) talievi (Starobogatov & Streletzkaja, 1967) ; Pseudeupera (Pseudeupera) tenuicardo (Krivosheina, 1978) ; Pseudeupera (Pseudeupera) tenuisculpta (Pirogov & Starobogatov, 1975) ; Pseudeupera (Pseudeupera) turgida (Clessin, 1873) ; Pseudeupera (Pseudeupera) volgensis (Pirogov & Starobogatov, 1975);

Pisidium subtruncatum is a species of pill clam, a minute freshwater bivalve in the family Sphaeriidae.

Description

The 2.7 – 4 mm shell is moderately tumid (swollen). In shape it is a strongly oblique oval. The umbos are prominent and well behind the middle. The surface is silky glossy with fine, irregular ribbing. In colour it is whitish to greyish.

Distribution

Its native distribution is Holarctic.

Czech Republic – in Bohemia, in Moravia,^[4] least concern (LC)^[5]
Germany – distributed in whole Germany but in 2 states in red list (Rote Liste BRD).^[6]
Nordic countries: Denmark, Faroes, Finland, Iceland, Norway and Sweden^[7]
Great Britain and Ireland^[8]

References

^ Seddon, M.B.; Van Damme, D. (2017). "Pisidium subtruncatum". IUCN Red List of Threatened Species. 2017 e.T155908A42454034. doi:10.2305/IUCN.UK.2017-3.RLTS.T155908A42454034.en. Retrieved 15 February 2026.
^ NatureServe. "Pisidium subtruncatum". NatureServe Explorer. Arlington, Virginia. Retrieved 12 February 2026.
^ Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O (eds.). "Euglesa subtruncata (Malm, 1855)". MolluscaBase. World Register of Marine Species. Retrieved 15 February 2026.
^ (in Czech) Horsák M., Juřičková L., Beran L., Čejka T. & Dvořák L. (2010). "Komentovaný seznam měkkýšů zjištěných ve volné přírodě České a Slovenské republiky. [Annotated list of mollusc species recorded outdoors in the Czech and Slovak Republics]". Malacologica Bohemoslovaca, Suppl. 1: 1-37. PDF.
^ Beran, L. (2002) Vodní měkkýši České Republiky - rozšíření a jeho změny, stanoviště, šíření, ohrožení a ochrana, červený seznam. Aquatic molluscs of the Czech Republic - distribution and its changes, habitats, dispersal, threat and protection, Red List. - Sborník přírodovědného klubu v Uherském Hradišti, Supplementum 10, 258 pp.
^ Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 109, ISBN 3-923376-02-2
^ Kuiper, J. G. J.; Økland, K. A.; Knudsen, J.; Koli, L.; von Proschwitz, T.; Valovirta, I. (1989), "Geographical distribution of the small mussels (Sphaeriidae) in North Europe (Denmark, Faroes, Finland, Iceland, Norway and Sweden)" (PDF), Annales Zoologici Fennici, 26 (2): 73–101
^ Roy Anderson, 2005 An annotated list of the non-marine molluscs of Britain and Ireland Journal of Conchology, 38 (6): 607–637, (published 2005) [1].

External links

Pisidium subtruncatum at Animalbase taxonomy, short description, biology, status (threats), images
Images at BOLD.
Pisidium subtruncatum illustrated in Danmarks Fauna (Georg Mandahl-Barth)

[IUCN-1] Seddon, M.B.; Van Damme, D. (2017). "Pisidium subtruncatum". IUCN Red List of Threatened Species. 2017 e.T155908A42454034. doi:10.2305/IUCN.UK.2017-3.RLTS.T155908A42454034.en. Retrieved 15 February 2026.

[NS-2] NatureServe. "Pisidium subtruncatum". NatureServe Explorer. Arlington, Virginia. Retrieved 12 February 2026.

[WoRMS-3] Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O (eds.). "Euglesa subtruncata (Malm, 1855)". MolluscaBase. World Register of Marine Species. Retrieved 15 February 2026.

[Horsák_2010-4] (in Czech) Horsák M., Juřičková L., Beran L., Čejka T. & Dvořák L. (2010). "Komentovaný seznam měkkýšů zjištěných ve volné přírodě České a Slovenské republiky. [Annotated list of mollusc species recorded outdoors in the Czech and Slovak Republics]". Malacologica Bohemoslovaca, Suppl. 1: 1-37. PDF.

[5] Beran, L. (2002) Vodní měkkýši České Republiky - rozšíření a jeho změny, stanoviště, šíření, ohrožení a ochrana, červený seznam. Aquatic molluscs of the Czech Republic - distribution and its changes, habitats, dispersal, threat and protection, Red List. - Sborník přírodovědného klubu v Uherském Hradišti, Supplementum 10, 258 pp.

[6] Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 109, ISBN 3-923376-02-2

[kuiper1989-7] Kuiper, J. G. J.; Økland, K. A.; Knudsen, J.; Koli, L.; von Proschwitz, T.; Valovirta, I. (1989), "Geographical distribution of the small mussels (Sphaeriidae) in North Europe (Denmark, Faroes, Finland, Iceland, Norway and Sweden)" (PDF), Annales Zoologici Fennici, 26 (2): 73–101

[8] Roy Anderson, 2005 An annotated list of the non-marine molluscs of Britain and Ireland Journal of Conchology, 38 (6): 607–637, (published 2005) [1].

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