Uranothauma nubifer

{{Short description|Species of butterfly}}

{{Speciesbox

| image = Black heart imported from iNaturalist photo 249466028 on 12 September 2024.jpg

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| taxon = Uranothauma nubifer

| authority = (Trimen, 1895)[http://www.nic.funet.fi/pub/sci/bio/life/insecta/lepidoptera/ditrysia/papilionoidea/lycaenidae/polyommatinae/uranothauma/index.html Uranothauma] at Markku Savela's Lepidoptera and Some Other Life Forms

| synonyms =

• Lycaena nubifer Trimen, 1895
• Lampides pelotus Karsch, 1895
• Cupido nubifer var. distinctesignatus Strand, 1911
• Uranothauma nubifer abyssinica Libert, 1993

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Uranothauma nubifer, the black heart or black-heart branded blue, is a butterfly of the family Lycaenidae. It is found from Ethiopia to South Africa. It is also found in eastern Democratic Republic of the Congo.

The wingspan is 22–26 mm for males and 24–28 mm for females. Adults are on wing year-round, with a peak from November to February.{{cite book|last=Woodhall |first=Steve |title=Field Guide to Butterflies of South Africa |year=2005 |location=Cape Town, South Africa |publisher=Struik |isbn=978-1-86872-724-7 }}

The larvae feed on Acacia species, including A. karroo.