Common Name - -	Family : Order
Uganda clawed frog - -	Pipidae : Anura
Uglynest caterpillar - -	Tortricidae : Lepidoptera
Uhler’s stink bug - -	Pentatomidae : Heteroptera
Umbrella fern bell moth - -	Tortricidae : Lepidoptera
Umutgasari - -	Gelidiaceae : Gelidiales
Unbanded saltmarsh mosquito - -	Culicidae : Diptera
Uncertain moth - -	Noctuidae : Lepidoptera
Unequal mining bee - -	Colletidae : Hymenoptera
Unequal mining bee - -	Colletidae : Hymenoptera
Unicorn caterpillar moth - -	Notodontidae : Lepidoptera
Uracoan rattlesnake - -	Viperidae : Squamata
Uraeus snake - -	Elapidae : Squamata
Uruçu - -	Apidae : Hymenoptera
Uruguay red-belly toad - -	Bufonidae : Anura
Uruguayan coral snake - -	Elapidae : Squamata
Urutu lancehead - -	Viperidae : Squamata
Usina tree frog - -	Hylidae : Anura
Ussuri mamushi - -	Viperidae : Squamata
Uzifly - -	Tachinidae : Diptera