Updated as per The Known Sphingidae of Costa Rica, November 2007
Updated as per personal communication with Jose Monzon (Guatemala); May 2009
Updated as per CATE (description; Mexico to Panama); March 18, 2011

Pachygonidia drucei
Rothschild & Jordan, 1903

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

This site has been created by Bill Oehlke at oehlkew@islandtelecom.com
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Family: Sphingidae, Latreille, 1802
Subfamily: Macroglossinae, Harris, 1839
Tribe: Dilophonotini, Burmeister, 1878
Genus: Pachygonidia Fletcher, 1982 ...........
Species: drucei Rothschild & Jordan, 1903


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Pachygonidia drucei, (wingspan: 72-82mm, males smaller than females), flies in
Panama and
Costa Rica and north to
Guatemala; and

The forewing is most similar to that of Pachygonidia hopfferi, but the apex is pointed (not sinuate between Rs3 and Rs4, i.e. not dentate at the end of Rs4). The outer margin is only slightly hollowed out between apex and M3, not angled at M2.

The discal spot is relatively large, and the clayish patch below the apex is much more distinct as is the diffuse, whitish scaling near the anal angle, compared to hoppferi.

The hindwing has three median transverse rose-pinkish bands as in hopfferi. CATE


There are probably several flights throughout the year. Tony James reports a June flight in Panama.

Pachygonidia drucei, Gamboa, Panama,
78mm, June 2007, courtesy of Tony James.


Larvae probably pupate in thin walled cocoons under leaf litter.


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

Pachygonidia drucei female, Costa Rica, courtesy of Dan Janzen.


Mature larvae probably descend host to pupate amongst leaf litter. Larvae feed on Doliocarpus dentatus, Doliocarpus multiflorus and Tetracera hydrophila .

Larvae are long, thin and green in the early instars, with a long, straight tail/horn. Note the curly tail in later instars and tail-less final instar in the Dan Janzen images below.

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