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Updated as per
AN ANNOTATED CHECKLIST OF THE SPHINGIDAE OF BOLIVIA, October 2007 Updated as per More, Kitching and Cocucci's Hawkmoths of Argentina 2005, October, 2007 Updated as per http://biological-diversity.info/sphingidae.htm (Belize), November 2007 Updated as per Fauna Entomologica De Nicarauga, November 2007 Updated as per The Known Sphingidae of Costa Rica, November 2007 Updated as per personal communication with Ben Trott (Playa del Carmen, Quintana Roo, Mexico); February 25, 2012 Updated as per personal communication with Vadim Kroutov (Sao Bento do Sul, Brazil); March 1, 2015 Updated as per personal communication with Galerita Janus (Mount Totumas, Chiriqui, Panama, July 16, 2016, 1880m); March 17, 2020 |
Eumorpha triangulum female courtesy of Dan Janzen.
Eumorpha triangulum 134mm, Mount Totumas, Chiriqui, Panama,
July 16, 2016, 1880m, courtesy of Galerita Janus, id by Bill Oehlke.
This site has been created by Bill Oehlke.
Comments, suggestions and/or additional information are welcomed by Bill.
TAXONOMY:Superfamily: Sphingoidea, Dyar, 1902 |
This species flies in Costa Rican rain forests and cloud forests.
Eumorpha triangulum, Arenal Lodge Hotel, Alejuela, Costa Rica,
September 22, 2008, courtesy of Pat and Tony James, id confirmed by Bill Oehlke.
Eumorpha triangulum, N P Piedras Blancas, Puntarenas, Costa Rica,
July 7, 2008, 65m, courtesy of Gernot Kunz, tentative id by Bill Oehlke.
Eumorpha triangulum male, 123mm, Sao Bento do Sul, Brazil,
courtesy of Vadim Kroutov; a first?? for Brazil.
Eumorpha triangulum, Costa-Rica, Tuis-Cartago, courtesy of Frederik Goussey.
Eumorpha triangulum male courtesy of Dan Janzen.
Eumorpha triangulum male, 114mm, verso, courtesy of Dan Janzen.
Eumorpha triangulum female, 114mm, verso, courtesy of Dan Janzen.
Eumorpha anchemolus, male (verso), 119mm, Costa Rica, courtesy of Dan Janzen.
Eumorpha triangulum ??, Pook's Hill Reserve, Cayo District, Belize,
more likely E. anchemolus, June 23, 2006, courtesy of Brant Reif.
In E. triangulaum there is almost alwasy a thick, dark, comma-shaped tail extending from base of the trapezoidal patch into, at least, the next intraneural section of wing.
Typical of Eumorpha species, the larvae have a well develped anal horn in the first instar. Eggs are deposited singly and are a translucent green |
The horn becomes much less prominent as the larvae develop. |
This larva has taken on a pinkish hue and will shortly descend foodplant host to pupate. |
Pupation is underground and pupal stage usually lasts five-six weeks before eclosion. The pupa is long and slender with a long cremaster. |
Eumorpha triangulum courtesy of David Bajorins,
November, about 100km up river from Iquitos, Peru.
Saurauia montana | Saurauia montana |
Those who first published descriptions and assigned scientific names to many insects, simply chose names of
biblical or mythological origin without any real descriptive qualities. Their purpose was simply to set a standard for purposes
of identification by assigned name. On some occasions, names, mostly of Latin or Greek origin, were chosen to signify a particular
character of the genus or of an individual species.
The genus name "Eumorpha" means well-formed.
The species name, "triangulum", MIGHT refer to the darker triangular scaling across the dorsal surface of the thorax.
The pronunciation of scientific names is troublesome for many. The "suggestion" at the top of the page is merely a suggestion. It is based on
commonly accepted English pronunciation of Greek names and/or some fairly well accepted "rules" for latinized scientific names.
The suggested pronunciations, on this page and on other pages, are primarily put forward to assist those who hear with internal ears as they read.
There are many collectors from different countries whose intonations and accents would be different.
Ben Trott sends the Eumorpha triangulum larval images from Quintana Roo, Mexico. He writes, "This larva was found in its third instar on the same plant as E. anchemolus, in its fifth instar. It was also huge like anchemolus, and very similar, except it was a brown morph, and has an extra colour patch between the three main patches and the two spots on the frontal segments. This species also annoints itself prior to pupating, and doesn't use silk for its chamber."
Eumorpha triangulums third instar, Playa del Carmen, Quintana Roo, Mexico,
courtesy of Ben Trott.
Eumorpha triangulums fourth instar, Playa del Carmen, Quintana Roo, Mexico,
courtesy of Ben Trott.
Eumorpha triangulums fourth instar, Playa del Carmen, Quintana Roo, Mexico,
courtesy of Ben Trott.
Eumorpha triangulums fifth instar, Playa del Carmen, Quintana Roo, Mexico,
courtesy of Ben Trott.
Eumorpha triangulums fifth instar, Playa del Carmen, Quintana Roo, Mexico,
courtesy of Ben Trott.
Verso comparison of anchemolus and triangulum,
Panama, Galerita Janus
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