Eacles masoni
Updated as per Heppner's Atlas of Neotropical Lepidoptera Checklist: Part 4B, 1996, November 29, 2005
Lemaire's Ceratocampinae, November 29, 2005
Updated as per communication from Jean Michel Maes (Nicaragua), March 2007
Updated as per http://www.inbio.ac.cr/bims/k02/p05/c029/o0119/f00885.htm IB

Eacles masoni
EE-uh-kleesMMAY-son-eye
Schaus, 1896

Eacles masoni masoni (male) courtesy of Leroy Simon.

TAXONOMY:

Superfamily: Bombycoidea, Latreille, 1802
Family: Saturniidae, Boisduval, [1837] 1834
Subfamily: Ceratocampinae, Harris, 1841
Genus: Eacles, Hübner, [1819]

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DISTRIBUTION:

Eacles masoni masoni (wingspan: males: 100-118; females: 127-142mm) flies in
Mexico: San Luis Potasi, Oaxaca, Veracruz, Chiapas and Quintana Roo;
Belize: Cayo and Toledo;
Guatemala: Cayuga, (Izabal (JM));
Nicaragua: Jinotega, Matagalpa, Zelaya;
Costa Rica: Heredia, Cartago and Puntarenas (CL), Guanacaste, San Jose, Limon (IB); and
Panama.

Eacles masoni masoni male, copyright Kirby Wolfe

Almost the entire male forewing is a dark reddish-burgundy brown with a yellow patch near the apex, a little yellow run outside the pm line near the anal angle and some traces of yellow in the basal area. The dark brown pm line remains relatively close to the outer margin from the apex to the inner margin. The post median area/outer margin is dark on all wings.

FLIGHT TIMES AND PREFERRED FOOD PLANTS:

In Mexico, adult specimens have been taken in September.

Eggs are most frequently deposited on Laurel sumac (Rhus laurina).


Female Eacles masoni masoni, courtesy of Leroy Simon.

ECLOSION, SCENTING AND MATING:

Females, which are much plainer than males, mate around 10:00 P.M., and the pair remains coupled until the following evening. Upon separation, the females begin their ovipositing flights.

EGGS, LARVAE AND PUPAE:

Yellow, translucent eggs are deposited singly or in small clusters of up to six. The larvae become visible through the egg shells a day or so before emerging.

Eacles masoni masoni female, copyright Kirby Wolfe.

Larvae are solitary in their feeding habits and may exhibit a basic brown or green colouration after the third instar.

Lengths of up to 11 cm are attained at larval maturity at which time larvae descend trees to pupate in underground chambers.

This dark larva has just shed his skin, which may or may not be consumed.

Images courtesy of Leroy Simon.

Pupae should be stored under cool , but above freezing temperatures, and sprinkling with water a few times a week in June encourages July eclosions.

Eacles masoni masoni larvae, copyright Kirby Wolfe

Larval Food Plants


It is hoped that this alphabetical listing followed by the common name of the foodplant will prove useful. The list is not exhaustive. Experimenting with closely related foodplants is worthwhile.

Liquidambar styraciflua.......
Rhus laurina
Schinus terebinthifolius

Sweetgum
Laurel sumac
Brazilian pepper tree

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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.

Some of the early describers/namers chose genus and species names indicating some character of the insect, but more often, they simply chose names from Greek or Roman mythology or history.

Those species names which end in "ensis" indicate a specimen locale, and those which end in "i", pronounced "eye", honour a contempory friend/collector/etc.

I do not know the source of the genus name "Eacles", but it may be a combination of "Ea", the Greek word for gods and goddesses and the Greek suffix "cles", meaning 'glory of'.

The species name "masoni" is honourific for a man named Mason.