Aphonyx rivularis
Updated as per "A Hawk Moths fauna of southern Maranhão state, Brazil, ... "; NEVA: Jahrgang 34 Heft 3 November 2013; via Jean Haxaire; April 5, 2014

Amphonyx rivularis
am-FOH-nicksM rih-view-LAHR-ihs
Rivularis Sphinx
Butler, 1875

Amphonyx duponchel, Brasil, Poté, Minas Gerais, November 11, 2004,
courtesy of Frederik Goussey, possibly Amphonyx rivularis.

This site has been created by Bill Oehlke at oehlkew@islandtelecom.com
Comments, suggestions and/or additional information are welcomed by Bill.

TAXONOMY:

Family: Sphingidae, Latreille, 1802
Subfamily: Sphinginae, Latreille, [1802]
Tribe: Sphingini, Latreille, 1802
Genus: Amphonyx Poey, 1832 ...........
Species: rivularis Butler, 1875

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DISTRIBUTION:

Duponchel's Sphinx, Amphonyx rivularis (Wing span: 4 5/16 - 5 7/8 inches (11 - 15 cm), males much smaller than females)], flies in southern Brazil: Minas Gerais; southern Maranhoa. It was at one time equated with duponchel.

Recently Amphonyx has been resurrected as a genus due to significant differences in genitalia between Cocytius and Amphonyx species.

FLIGHT TIMES:

Amphonyx rivularis adults nectar at flowers and brood continuously.

In Bolivia there are records for March-April and June-July-August-September-October-November-December.

Both males and females come to lights.

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:

Colourful larvae (not hairy, white posterior slash that fades into bluish, 1-2 white posterior costal slashes, maroon line down center of apple green back, 13.2 g as large last instar) feed on Guatteria diospyroides, Annona purpurea, Annona reticulata, Xylopia frutescens and Custard apple (Annona glabra) and probably other members of the Annonaceae family.

Moths emerge from pupae in as few as 21 days from pupation.

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