| 词条 | Pisidium milium |
| 释义 |
| name = Pisidium milium | image = Pisidium milium.svg | image2 = PisidiumMiliumDanmarksFauna.jpg | image_caption = Drawing of the left valve internal view of Pisidium milium | image2_caption = Drawing from Dansk Fauna showing the valve articulation and the rectangular form | status = NE | status_ref = [1] | regnum = Animalia | phylum = Mollusca | classis = Bivalvia | subclassis = Heterodonta | ordo = Veneroida | subordo = Sphaeriacea | superfamilia = | familia = Sphaeriidae | subfamilia = | genus = Pisidium | subgenus = | species = P. milium | binomial = Pisidium milium | binomial_authority = Held, 1836 | range_map = | range_map_width = 250px | synonyms = }} Pisidium milium is a species of very small freshwater bivalve in the family Sphaeriidae, the fingernail clams and pea clams. DescriptionThe 3.0- to 4.5-mm shell is tumid (swollen). It is more rectangular than other Pisidium species and has broad, swollen umbos which lie behind the midpoint. The surface (periostracum) is very glossy, with irregular, concentric striae. The colour is yellow to pale brown. DistributionThe native distribution of this species is Holarctic.
References1. ^2006 IUCN Red List of Threatened Species. 2. ^1 {{cs icon}} 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. 3. ^Red List of the molluscs (Mollusca) of the Czech Republic http://mollusca.sav.sk/malacology/redlist.htm 4. ^Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, page 109, {{ISBN|3-923376-02-2}} 5. ^{{Citation| last = Kuiper| first = J. G. J. |author2=Økland, K. A. |author3=Knudsen, J. |author4=Koli, L. |author5=von Proschwitz, T. |author6=Valovirta, I.| title = Geographical distribution of the small mussels (Sphaeriidae) in North Europe (Denmark, Faroes, Finland, Iceland, Norway and Sweden)| journal = Annales Zoologici Fennici| volume = 26| issue = 2| year = 1989| pages = 73–101| url =http://www.sekj.org/PDF/anzf26/anz26-073-101.pdf}} 6. ^Roy Anderson ,2005 An annotated list of the non-marine molluscs of Britain and Ireland Journal of Conchology, 38 (6): 607–637, (published 2005) . External links
2 : Pisidium|Bivalves described in 1836 |
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