Harpendyreus aequatorialis

{{Short description|Species of butterfly}}

{{Speciesbox

| image = HarpendyreusAequatorialisSharpe1892.JPG

| image2 =

| taxon = Harpendyreus aequatorialis

| authority = (Sharpe, 1892)[http://www.nic.funet.fi/pub/sci/bio/life/insecta/lepidoptera/ditrysia/papilionoidea/lycaenidae/polyommatinae/harpendyreus/index.html Harpendyreus] at Markku Savela's Lepidoptera and some other life forms

| synonyms =

• Lycaena aequatorialis Sharpe, 1892
• Cyclyrius sharpiae Butler, 1901
• Cyclirius vulcanica Joicey & Talbot, 1924

}}

Harpendyreus aequatorialis, the equatorial mountain blue, is a butterfly in the family Lycaenidae. It is found in Kenya, Tanzania and the Democratic Republic of the Congo.{{Cite web |url=http://atbutterflies.com/downloads/lycaenidae_polyommatini_1.doc |title=Afrotropical Butterflies: Lycaenidae - Tribe Polyommatini (part 1) |access-date=2012-07-09 |archive-url=https://web.archive.org/web/20131213021126/http://atbutterflies.com/downloads/lycaenidae_polyommatini_1.doc |archive-date=2013-12-13 |url-status=dead }} The habitat consists of montane grassland and moorland.