Dodatak:Popisi paučnjaka, Um
Umb uredi
, Umbellozetes
Umbonata Grasshoff, 1971 uredi
- Umbonata spinosissima (Tullgren, 1910)
Arachnida → Araneae → Araneidae
Umm uredi
Ummeliata Strand, 1942 uredi
- Ummeliata angulituberis (Oi, 1960)
- Ummeliata erigonoides (Oi, 1960)
- Ummeliata feminea (Bösenberg & Strand, 1906)
- Ummeliata insecticeps (Bösenberg & Strand, 1906) tipična vrsta
- Ummeliata onoi Saito, 1993
- Ummeliata osakaensis (Oi, 1960)
- Ummeliata saitoi Matsuda & Ono, 2001
- Ummeliata sibirica (Eskov, 1980)
- Ummeliata xiaowutai Han & Zhang, 2014
Arachnida → Araneae → Linyphiidae
Ummidia Thorell, 1875 uredi
- Ummidia absoluta (Gertsch & Mulaik, 1940)
- Ummidia aedificatoria (Westwood, 1840)
- Ummidia algarve Decae, 2010
- Ummidia algeriana (Lucas, 1846)
- Ummidia armata (Ausserer, 1875)
- Ummidia asperula (Simon, 1889)
- Ummidia audouini (Lucas, 1835)
- Ummidia beatula (Gertsch & Mulaik, 1940)
- Ummidia carabivora (Atkinson, 1886)
- Ummidia carabivora emarginata (Atkinson, 1886)
- Ummidia celsa (Gertsch & Mulaik, 1940)
- Ummidia erema (Chamberlin, 1925)
- Ummidia funerea (Gertsch, 1936)
- Ummidia gandjinoi (Andreeva, 1968)
- Ummidia glabra (Doleschall, 1871)
- Ummidia mischi Zonstein, 2014
- Ummidia modesta (Banks, 1901)
- Ummidia nidulans (Fabricius, 1787)
- Ummidia oaxacana (Chamberlin, 1925)
- Ummidia picea Thorell, 1875
- Ummidia pustulosa (Becker, 1879)
- Ummidia pygmaea (Chamberlin & Ivie, 1945)
- Ummidia rugosa (Karsch, 1880)
- Ummidia salebrosa (Simon, 1891)
- Ummidia tuobita (Chamberlin, 1917)
- Ummidia zebrina (F. O. Pickard-Cambridge, 1897)
- Ummidia zilchi Kraus, 1955
Arachnida → Araneae → Ctenizidae
Umu uredi
Umuara Brescovit, 1997 uredi
- Umuara fasciata (Blackwall, 1862)
- Umuara freddyi Oliveira & Brescovit, 2015
- Umuara junin Brescovit, 1997
- Umuara juquia Brescovit, 1997
- Umuara pydanieli Brescovit, 1997
- Umuara xingo Oliveira & Brescovit, 2015
Arachnida → Araneae → Anyphaenidae
Umw uredi
Umwani Griswold, 2001 uredi
- Umwani anymphos Griswold, 2001
- Umwani artigamos Griswold, 2001