Xylophanes isaon by John Vriesi.

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TAXONOMY: Family: Sphingidae, Latreille, 1802 Subfamily: Macroglossinae, Harris, 1839 Tribe: Macroglossini, Harris, 1839 Genus: Xylophanes Hubner [1819] ........... Species: irrorata Boisduval, [1875]

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DISTRIBUTION:

Xylophanes isaon moths fly in
Brazil (specimen type locality) and
Paraguay: Caaguazu.

Theretra olivacea Rothchild, 1894, Brazil, is the same as Xylophanes isaon.
f. nanus Raymundo, 1932, Brazil, is the same as Xylophanes isaon.

FLIGHT TIMES:

Xylophanes isaon adults probably brood continuously.

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. Males come in to lights very readily, but females are seldom taken in that way.

EGGS, LARVAE, PUPAE:

Larvae probably feed on Psychotria panamensis and Psychotria nervosa and other members of the of the Rubiaceae family and on Pavonia guanacastensis of the Malvaceae family.

Moths emerge approximately one-two months after larvae pupate.

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