Template:Ramos & Ruz, 2013
- Ramos, K.S. & Ruz, L. 2013. First record of intersexual phenotype in Calliopsini bees (Hymenoptera, Apidae, Andreninae): an unusual specimen of Acamptopoeum submetallicum (Spinola). Zootaxa 3609(2): 239–242. DOI: 10.11646/zootaxa.3609.2.10