I found this on Oncidium crocesus at the IOSPE - IOSPE PHOTOS
Oncidium croesus synonyms are "Alatiglossum croesus ( Rchb.f. ) Baptista 2006; Oncidium longipes Hkr. non Lindley?; Oncidium longipes var croesus [Rchb.f] Veitch ?"
as per that page ...
Looks like a match