Johanson, Kjell Arne, and Ralph W. Holzenthal. 2010. “The Snail-Case Caddisfly Subgenus Helicopsyche (Feropsyche) in Costa Rica, With the Description of 3 New Species (Trichoptera: Helicopsychidae)”. Zootaxa 2689 (1). Auckland, New Zealand:37–47. https://doi.org/10.11646/zootaxa.2689.1.4.