Protambulyx eurycles courtesy of Steve Graser.
Yasuni, Ecuador, September 5, 2002, 8:49 PM

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TAXONOMY: Family: Sphingidae, Latreille, 1802 Subfamily: Sphinginae, Latreille, 1802 Tribe: Smerinthini, Grote & Robinson, 1865 Genus: Protambulyx Rothschild & Jordan, 1903 ........... Species: eurycles Herrich-Schaffer, 1855

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Protambulyx eurycles, Cristalino Jungle Lodge, Mato Grosso, Brazil,
September 10, 2007, 71m, courtesy/copyright of Johan van't Bosch.

DISTRIBUTION:

Protambulyx eurycles flies in Surinam, Guyana, Ecuador, Bolivia: La Paz (400m), Santa Cruz (2020m); Brazil: Mato Grosso (JVB).

Manuel Balcazar-Lara reports it from Mexico, and it is also reliably reported from
Nicaragua: Zelaya, Rio San Juan; and
Costa Rica: Guanacaste, Puntarenas, Lemon, Alajuela, Heredia, San Jose, Carthage.

Protambulyx eurycles, Ecuador, courtesy of Charles J. DeRoller.

Note the markedly broader forewing submarginal band between veins M1 and M2. In Protambulyx euryalus the band is not nearly as broad.

Protambulyx eurycles courtesy of Rafael Cury, via Milena Nascimento.

Milena Nascimento reports the above specimen collected on June 30, 2004, in Parque Nacional da Restinga de Jurubatiba, Carapebus, RJ, Brazil.

FLIGHT TIMES:

Protambulyx eurycles adults probably fly continuously in multiple broods. Specimens have been taken in March and August and October in Bolivia. Johan van't Bosch reports a September flight in Mato Grosso, Brazil.

ECLOSION:

Pupae probably wiggle to surface from subterranean chambers just prior to eclosion.

SCENTING AND MATING:

Females call in the males with a pheromone released from a gland at the tip of the abdomen.

EGGS, LARVAE, PUPAE:

Larvae probably feed on Anacardiaceae, especially Spondias dulcis, Spondias mombin, Astronium graveolens, Erythroxylon and Comocladia, all in the cashew family, and on Simarouba glauca and Simarouba amara of the Simaroubaceae family.

Protambulyx eurycles courtesy of Rafael Cury, via Milena Nascimento.

Milena Nascimento reports the above larva collected on June 30, 2004, by Rafael Cury in Parque Nacional da Restinga de Jurubatiba, Carapebus, RJ, Brazil.

Moths may eclose within fourteen days of pupation.

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