Amegilla alpha or Amegilla (Zonamegilla) alpha is a species of digger bee. It is endemic to Australia. It was described in 1904 by British-American entomologist Theodore Dru Alison Cockerell.
The body length is 11âÂÂ14 mm, forewing length 7âÂÂ9 mm. Both sexes are distinguishable from other Australian Zonamegilla species by the orange fur covering the upper surface of the metasoma.
The species occurs in tropical areas of north-western Australia, including the Kimberley region of Western Australia and the adjacent part of the Northern Territory. The type locality is Jasper Gorge, 54 km north-west of Victoria River Downs.
The adults are flying mellivores.