Pachygonidia ribbei
(Druce, 1881)

Pachygonidia ribbei ribbei male, Costa Rica, courtesy of Dan Janzen.

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: Macroglossinae, Harris, 1839 Tribe: Dilophonotini, Burmeister, 1878 Genus: Pachygonidia Fletcher, 1982 ........... Species: ribbei ribbei Druce, 1881

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DISTRIBUTION:

Pachygonidia ribbei, (wingspan: 56-62mm, males probably smaller than females), flies in
Panama; Chiriqui;
Costa Rica;
Colombia;
Venezuela;
Ecuador; and
Peru: Maranon.

Pale bands on the hindwing of other Pachygonidia species are replaced by two short bars at the anal angle in ribbei. The forewing outer margin is more or less denticulate, and the anal angle is less produced than in other species of Pachygonidia. The pale orangey-brown submarginal patch on M1-M2 is distinct and it is much larger than in any other species of Pachygonidia. The median and lower postmedian areas of the forewing have pale violet scales. CATE

FLIGHT TIMES:

There are probably several flights throughout the year.

ECLOSION:

Larvae probably pupate in thin walled cocoons under leaf litter.

SCENTING AND MATING:

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

EGGS, LARVAE, PUPAE:

Mature larvae probably descend host to pupate amongst leaf litter. Larvae feed on Hamelia patens and Hamelia axilaris.

There are both green and brown larval forms. Images courtesy of Dan Janzen.

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