Helicopsyche ralphi sp. nov., female A genitalia, lateral view B genitalia, ventral view C genitalia, dorsal view D sternum VI, lateral view. Abbreviations: seg. VIII = abdominal segment VIII; seg. IX = abdominal segment IX; e.seg. IX = external part of abdominal segment IX; pre.a = preanal appendage; Xd = dorsal branch abdominal segment X; Xv = ventral branch abdominal segment X; vag. = vagina; vag. scl. = vaginal sclerite.

 
 
  Part of: Cavalcante-Silva A, Pereira R, Calor AR (2022) Caddisflies (Trichoptera) checklist and a new species of Helicopsyche von Siebold, 1856, from the Brejo de Altitude de Triunfo, a relict rainforest within the Caatinga domain, Northeast Brazil. In: Pauls SU, Thomson R, Rázuri-Gonzales E (Eds) Special Issue in Honor of Ralph W. Holzenthal for a Lifelong Contribution to Trichoptera Systematics. ZooKeys 1111: 215-244. https://doi.org/10.3897/zookeys.1111.77541