Zizina antanossa

{{Short description|Species of butterfly}}

{{Redirect|Clover blue|the other butterfly with this common name|Zizina labradus{{!}}Zizina labradus}}

{{Italic title}}

{{Speciesbox

| name = Dark grass blue

| image = Dark grass blue (Zizina antanossa) underside Principe.jpg

| image_caption = in São Tomé and Príncipe

| taxon = Zizina antanossa

| authority = (Mabille, 1877)[http://www.nic.funet.fi/pub/sci/bio/life/insecta/lepidoptera/ditrysia/papilionoidea/lycaenidae/polyommatinae/zizina/index.html Zizina] at Markku Savela's Lepidoptera and Some Other Life Forms

| synonyms =

• Lycaena antanossa Mabille, 1877
• Zizera publia Hulstaert, 1924

}}

Zizina antanossa, the dark grass blue or clover blue, is a butterfly of the family Lycaenidae. It is found in all of Africa, including Madagascar and Réunion.

The wingspan is 20–24 mm for males and 21–28 mm for females. Adults are on wing year-round in warm areas, with peaks from October to November and from March to April in southern Africa.{{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 Desmodium and Indigofera species.