Published in Bulletin of The British Ornithologists' Club, in 1993, in volume 113, pages 88-92

Created: 2012-12-02, modified: 2012-12-02

Published in Entomologist's Record and Journal of Variation, in 1990, in volume 102, issue 7-8, pages 169-170

Created: 2016-09-01, modified: 2016-09-01

Published in The Wilson Bulletin, in 1922, in volume 34, issue 2, pages 90-94

Created: 2016-11-27, modified: 2016-11-27

Published in Entomologist's Record and Journal of Variation, in 1976, in volume 88, issue 6, pages 157-158

Created: 2016-09-01, modified: 2016-09-01

Published in Entomologist's Record and Journal of Variation, in 1987, in volume 99, issue 9-10, pages 222-224

Created: 2016-09-01, modified: 2016-09-01