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.
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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