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Updated as per The Known Sphingidae of Costa Rica, November 2007 Updated as per personal communication with Jose Monzon (Guatemala); May 2009 Updated as per CATE (French Guiana,; Para, Brazil): February 6, 2011 Updated as per personal communication with Gregory Nielsen (Villavicencio, Meta, Colombia, January 31, 2011, 500m); February 6, 2011 Updated as per personal communication with Jose Ramon Alvarez Corral (Bolivar, Venezuela); May 27, 2012; ongoing Updated as per personal communication with Renata Xavier (larva, Manaus, Amazonas, Brazil, April 18, 2020); Aprl 21, 2020 |
Isognathus scyron, male, Costa Rica, courtesy of Dan Janzen.
This site has been created by Bill Oehlke.
Comments, suggestions and/or additional information are welcomed by Bill.
TAXONOMY:
Family: Sphingidae, Latreille, 1802 |
I believe it also flies in Colombia: Meta (GN);
Guyana; and
Brazil: Para; Amazonas: Manaus (RX).
It might also fly in Panama and Venezuela: Bolivar (JRAC), and there are likely also populations in Nicaragua and Honduras.
Bands on upperside of abdominal distinct. Upperside of thorax and forewings russet-drab-brown.
Underside of abdomen dirty white or slightly buff, faintly speckled with russet scales.
Outer half of forewing upperside with grey vein-streaks, interrupted by black dots.
Forewing upperside with black dash between M3 and CuA1, and another smaller one between CuA1 and CuA2, these dashes situated in a pale russet area that is not
clearly defined though obvious, being most distinct between M1 and M3.
The female's forewing uppersides lack the black dashes but have the russet area well marked. CATE
Isognathus scyron, female, Costa Rica, courtesy of Dan Janzen.
Isognathus scryon female, Villavicencio, Km 13 via Acacias, Meta, Colombia,
04°03’55.0 N 073°41’87.0 W, January 31, 2011, 500m, courtesy of Gregory Nielsen,
tentative id by Bill Oehlke.
Larvae have long tails; colouration suggests they are unpalatable to birds.
The pupae are also quite colourful, and, I suspect, are very lively. Moths generaly emerge witin 8-24 days of pupation.
Isognathus scryon St. Laurent du Maroni, French Guiana,
courtesy of Antoine Guyonnet, id by Jean Haxiare.
Isognathus scyron final instar, Manaus, Amazonas, Brazil,
April 18, 2020, courtesy of Renata Xavier, id by Jean Haxaire.
Isognathus scyron final instar, Manaus, Amazonas, Brazil,
April 18, 2020, courtesy of Renata Xavier, id by Jean Haxaire.
Isognathus scyron final instar, Manaus, Amazonas, Brazil,
April 18, 2020, courtesy of Renata Xavier, id by Jean Haxaire.
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