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Updated as per Heppner's Checklist: Part 4B 1996, January 2, 2005  Updated as per Lemaire's Hemileucinae 2002, January 2, 2005 Corrected as per personal communication with Carlos Mielke, April 9, 2007 This page has been updated August 24, 2015, based on reference material for Argentina, sent to me by Ezequiel Bustos, as cited in a recent publication: NÚÑEZ: Catálogo preliminar de Saturniidae de Argentina TROP. LEPID. RES., 25(1): 22-33, 2015 31. Updated as per Entomom-Satsphingia Jahrgang 8 Heft 02 31.07.2015; December 15, 2015  | 

The genus name, Hidripa, Draudt, ??might?? just be a rearrangement of the letters in Dirphia. Draudt put forward the genus names, Dihirpa, Hidripa and Hirpida, all in 1929-30. Hirpida guajoni (type species) was originally placed in the Dirphia genus by Dognin, 1894; Hidripa ruscheweyhi (type species) was originally placed in Dirphia genus by Berg, 1885; Dihirpa litura was originaly placed in Dirphia genus by Walker, 1855.
Females have woolly white hairs on the sides of the abdomen, and both sexes have eyespot-like discal spots on the hindwings. The postmedial line is usually undulating, and the forewing discal spot is usually "v" shaped, black and edged wtih yellow.
P indicates an image is available. The first country listed is the specimen type locality.
N cochabambensis  Brechlin &  Meister, 2015   
Bolivia: Cochabamba 
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N perdbahiana  Brechlin &  Meister, 2015   
Brazil: Bahia
N perdmisionesa  Brechlin &  Meister, 2015   
Argentina: Misiones
N tagmisionesa  Brechlin &  Meister, 2015   
Argentina: Misiones
N albipellis  Draudt, 1930   
Peru
P gschwandneri  Draudt, 1930   
Bolivia, 
Argentina
P paranensis  (Bouvier, 1929)  southeastern 
Brazil, possibly 
Peru
weymeri Draudt, 1930, Brazil, is a synonym for paranensis
P perdix  (Maassen & Weyding, 1885)   southeastern 
Brazil
P ruscheweyhi  (Berg, 1885)   
Argentina, 
Bolivia, 
Paraguay (UD)
P taglia  (Schaus, 1896)   southeastern 
Brazil, 
Paraguay (UD);
Argentina replaced by tagmisionesa in Misiones, Argentina.