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Updated as per Heppner's Checklist: Part 4B 1996, January 1, 2005  Updated as per Lemaire's Hemileucinae 2002, January 1, 2005; May 25, 2010 Updated as per personal communication with Bernhard Wenczel, November 24, 2005 Updated from Polillas Saturnidas de Colombia, 1997, Angela R. Amarillo-S., January 2007 Updated as per Entomo Satsphingia Jahrgang 6 Heft 2 21.02.2013; April 17, 2013 Updated as per The European Entomologist, Vol 4, # 3, June 28, 2013; November 6, 2013  | 

Periga parvibulbacea, male, copyright Kirby Wolfe
The genus Periga belongs to the Hemileucini Tribe of Subfamily Hemileucinae in the Saturniidae Family. Periga species are very similar to Lonomia species, but Periga are generally smaller and lighter in colouration and have an antemedial line on the hindwings. Also, except for Periga rasplusi, the discal spots on the forewing of Periga species are outwardly connected by a line which may or may not contain a smaller, similar spot. The hindwings of Periga species usually have a small discal spot.
Larvae have urticating spines and are highly gregarious, especially in the earlier instars, and members of this genus are found in South and Central America.

Periga anitae third instars, courtesy of Bernhard Wenczel.
 P  indicates an image is available.  The first country listed is the specimen type locality.
P caraca  
Rougerie & Santos, 2013, Brazil: Minas Gerais
P acuta  C. Mielke & Meister, 2013 , 
Brazil: Minas Gerais; Rio de Janeiro; Sao Paulo; Parana; Santa Catarina
P alticola  C. Mielke & Santos, 2013, 
Brazil: Minas Gerais; Rio de Janeiro
P pulchra  C. Mielke & Brechlin, 2013 , 
Brazil: Parana; Santa Catarina; Rio Grande do Sul
+++++++
N costaricana  Brechlin & Meister, 2013, 
Costa Rica: Alajuela; Guanacaste
N camacana  
Brechlin & Meister, 2013, Brazil: Bahia
N falcbahiana  Brechlin & Meister, 2013, Brazil: Bahia
N falcleopoldina  Brechlin & Meister, 2013, Brazil: Espirito Santo
N falcparaguayensis Brechlin & Meister, 2013, Paraguay: Canideyu; Alto Parana
N falcpotensis Brechlin & Meister, 2013, Brazil: Minas Gerais: Pote
N spatulatoides Brechlin & Meister, 2013, Brazil: Bahia
N insidiosoides Brechlin & Meister, 2013, Brazil: Espirito Santo
N circaustralis Brechlin, Meister & van Schayck, 2013, Brazil: Santa Catarina; 
Rio Grande do Sul; Parana; Paraguay: Alto Parana
N circleopoldina Brechlin & Meister, 2013, Brazil: Espirito Santo
N circpotensis  Brechlin & Meister, 2013, Brazil: Minas Gerais: Pote
N foersteri Brechlin & Meister, 2013, Brazil: Santa Catarina; Parana
N fusca  Brechlin & Meister, 2013, Argentina: Misiones
N wandana Brechlin & Meister, 2013, Argentina: Misiones: Wanda
N drechseli Brechlin & Meister, 2013, Paraguay: Caazapa; Caaguazu; Paraguari
N drechseli altoparanensis  Brechlin & Meister, 2013, Paraguay: Alto Parana
N fuscbahiana Brechlin & Meister, 2013, Brazil: Bahia
N santaleopoldina Brechlin & Meister, 2013, Brazil: Espirito Santo
N fuscleopoldina Brechlin & Meister, 2013, Brazil: Espirito Santo
N inornata  Brechlin & Meister, 2013, Brazil: Espirito Santo
N paraleopoldina Brechlin & Meister, 2013, Brazil: Espirito Santo
N potensis  Brechlin & Meister, 2013, Brazil: Minas Gerais: Pote
N lamercedia  Brechlin & Meister, 2013, Peru: Junin: Chanchamayo: La Merced
N sanmartiniana Brechlin & Meister, 2013, Peru: San Martin: Mina de Sol
N marcapata  Brechlin & Meister, 2013, Peru: Cusco: Marcapata
P mariposana  Brechlin & Meister, 2013, Peru: Junin: Mariposa; Pasco
P suninensis  Brechlin & Meister, 2013, Peru: Junin: Rio Venado: Sunin 
N quillabambensis  Brechlin & Meister, 2013, Peru: Cusco: Valle de Quillabamba
P parviboliviana  Brechlin & Meister, 2013, Bolivia: La Paz; Nor Yungas; Cochabamba; Santa Cruz
N parvichuquisaciana Brechlin & Meister, 2013, Bolivia: Chuquisaca
N parvicajamarcensis  Brechlin & Meister, 2013, Peru: Cajamarca
N parvimartinensis Brechlin & Meister, 2013, Peru: San Martin: Rioja; Amazonas 
N cutervensis Brechlin & Meister, 2013, Peru: Cajamarca: Cutervo
N baezana Brechlin, Meister & Kaech, 2013, Ecuador: Napo; Pastaza
N altomoronensis  Brechlin, Meister & Kaech, 2013, Ecuador: Morona-Santiago
P tungurahuensis Brechlin, Meister & Kaech, 2013, Ecuador: Tungurahua; Napo
N pacchana Brechlin, Meister & Kaech, 2013, Ecuador: El Oro
N barragani Brechlin, Meister & Kaech, 2013, Ecuador: Carchi
N acomayensis  Brechlin & Meister, 2013, Peru: Huanuco: Chinchao-Acomayo
N calabazana Brechlin & Meister, 2013, Peru: Junin: Calabaza
N angjunensis Brechlin & Meister, 2013, Peru: Junin: Rio Venado: Sunin
N angcuscensis Brechlin & Meister, 2013, Peru: Cusco: Mandor
P angguyensis Brechlin & Meister, 2013, French Guiana: Cayenne; Belizon; Saint Jean de Maroni 
P galbialtocuscensis Brechlin & Meister, 2013, Peru: Cusco: Nueva Virgen
P galbicentralis Brechlin & Meister, 2013, Peru: Huanuco: Carpish; Pasco
P galbinexspectata Brechlin & Meister, 2013, Ecuador: Napo: Guacamayos; Peru: Amazonas; Lambayeque
P galbiparaculata Brechlin, Meister & Kaech, 2013, Ecuador: Napo; Pastaza: Peru: Amazonas: Puente Nieva 
+++++++
P  angulosa (Lemaire, 1972) Peru, Colombia, Ecuador, Guyana, French Guiana, Brazil, Bolivia
P  anitae Naumann, Brosch, & Wenczel, 2005 Peru
P  armata (Lemaire, [1973]) Colombia
P  aurantiaca (Lemaire, 1972) Venezuela
P  bispinosa (Lemaire, 1972) Peru, Ecuador, Bolivia, Brazil; ? Fr. Guiana
P  boettgerorum Naumann, Brosch, & Wenczel, 2005 Peru
N brechlini Naumann, Brosch, & Wenczel, 2005 Peru
P  circumstans Walker, 1855 S. E. Brazil, Paraguay
fuligo (Lemaire, [1973]), ?, is a synonym for circumstans
fumida (Lemaire, [1973]), ?, is a synonym for circumstans
rheza (Lemaire, [1973]), ?, is a synonym for circumstans
P cluacina (Druce, 1886) Panama, Costa Rica, Colombia
P  cynira (Cramer, 1777) Surinam, Venezuela, Guyana, French Guiana,Brazil
P  elsa (Lemaire, [1973]) western Colombia, western Ecuador
P  extensiva  Lemaire, 2002 Ecuador
P  falcata (Walker, 1855) S. E. Brazil, Uruguay
abcondens (Lemaire, [1973]), ?, is a synonym for falcata
submacula (Walker, 1855), Brazil, is a synonym for falcata
apicalis (Walker, 1855), Brazil, is a synonym for falcata
subcynira (Bouvier, 1932), Brazil, is a synonym for falcata
P  galbimaculata (Lemaire, 1972) Peru, Ecuador
N  gueneei (Lemaire, [1973]) Brazil
hypsila (Lemaire, [1973]), ?, is a synonym for gueneei
tentyrus (Lemaire, [1973]), ?, is a synonym for gueneei
P  herbini  Lemaire, 2002 Ecuador
P  inexpectata (Lemaire, 1972) Colombia, Ecuador
P  insidiosa (Lemaire, 1972) Brazil
N  intensiva (Lemaire, [1973]) Colombia
P  kindli Lemaire, 1993 French Guiana
P  kishidai Naumann, Brosch, & Wenczel, 2005 Peru
P  lichyi (Lemaire, 1972) Venezuela
N  lobulata  Lemaire, 2002 Ecuador
P  occidentalis (Lemaire, 1972) Colombia, Ecuador, Peru
P pachijalensis Brechlin & Meister, 2013, Ecuador: Pichincha 
P  parvibulbacea (Lemaire, 1972) Ecuador, Peru, Bolivia
P  prattorum (Lemaire, 1972) eastern Peru,  Bolivia
N  rasplusi (Lemaire, 1985) southeastern Venezuela
N  sanguinea  Lemaire, 2002 French Guiana
P < spatulata (Lemaire, [1973])   Brazil: Bahia
P  squamosa (Lemaire, 1972) southeastern Peru, Bolivia
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Unidentified Periga.

Possibly Periga circumstans with elongated forewing apices,
more likely Periga acuta described in 2013,
Itanhandu, Minas Gerais, Brazil, May 31, 2009,
courtesy of Larry Valentine, tentative id by Bill Oehlke

Possibly Periga circumstans with elongated forewing apices,
more likely Periga acuta described in 2013,
Itanhandu, Minas Gerais, Brazil, May 31, 2009,
courtesy of Larry Valentine, tentative id by Bill Oehlke