DISTRIBUTION:

Dirphia nora (wingspan: males: 85mm; females: mm ?? Mfwl: 43-49mm (ESs); Ffwl: ) flies in
Panama: Chiriqui; and
rain forest areas of Costa Rica.

Based on images recently sent from Canopy Tower, Panama, Panama, I believe Dirphia nora ranges at least as far south as Panama, Panama. I believe that the abdomen of D. aviluisiana is more yellowish, compared to the redder abdomen of Dirphia nora, but I could be wrong.

The same red as opposed to yellow seems consistent across the tints in the wings of the two species.

Dirphia nora male, Canopy Tower, Panama, Panama,
285m, November 3, 2017, courtesy of Seth Ausubel, tentative id by Bill Oehlke.

Dan Janzen indicates the slightly smaller, dry forest specimens from Costa Rica are closest to Dirphia avia, while the larger, darker specimens from rain forest areas of Costa Rica are most likely Dirphia nora.

Dirphia nora male (verso), Mount Totumas Cloud Forest Farm, Chiriqui, Panama,
1650m +, courtesy of Jeffrey Dietrich, id by Bill Oehlke.

Based on Entomo-Satsphingia Jahrgang 4 Heft 5 29.12.2011, the Dirphia avia Group (darker median sub-triangular shape, running from costa toward inner margin without striga) consists of the following species:

allae Brechlin & Meister 2011, Peru: Ayacucho; Apurimac; Cusco; Puno; Madre de Dios; Ucayali; Junin; Pasco;
avia French Guiana; Venezuela; probably Guyana and Suriname; most of Central America
avibarinasensis Brechlin & Meister 2011, Venezuela: Barinas
avichoco Brechlin & Meister 2011, Colombia: Choco
aviluisiana Brechlin & Meister 2011, Colombia: Antioquia; Cundinamarca?; possibly into southern Panama
aviurica Brechlin & Meister 2011, Peru: Piura; Tumbes
avinapoana Brechlin, Meister & Kaech 2011, Ecuador: Napo; Zamora Chinchipe; Peru: Amazonas; San Martin
aviboliviana Brechlin & Meister 2011, Bolivia: La Paz; Chuquisaca; Beni; Tarija; Santa Cruz; Cochabamba;
avialtoparanensis Brechlin & Meister 2011, Paraguay: Alto Parana; Paraguari
cadioui Lemaire, 1980, Argentina; Bolivia
curitiba Draudt, 1930 Brazil
dentimaculata Schaus, 1921 Brazil; possibly Paraguay
muscosa Schaus, 1898 southeastern Brazil; northeastern Argentina
Ormiscodes hortensia Schaus, 1913, Brazil, is same as muscosa
f. sinuosa Bouvier, 1929, Brazil, is same as muscosa
f. colorata Bouvier, 1930, Brazil, is same as muscosa
nora (Druce, 1897) Panama: Chiriqui
triangulum Walker, 1855 southeastern Brazil: Santa Catarina; Rio de Janeiro; probably Sao Paulo; Minas Gerais; Parana.

Dirphia nora male, Canopy Tower, Panama, Panama,
285m, November 3, 2017, courtesy of Seth Ausubel, tentative id by Bill Oehlke.

FLIGHT TIMES AND PREFERRED FOOD PLANTS:

Moths are seen throughout the entire year so the species probably broods continuously as conditions permit.

Larvae probably will feed upon West Indian Locust (Hymenaea courbaril) and West Indian Cedar (Cedrela odorata).

Dirphia nora male, Canopy Tower, Panama, Panama,
285m, November 3, 2017, courtesy of Seth Ausubel, tentative id by Bill Oehlke.

ECLOSION, SCENTING AND MATING:

Males use highly developed antennae to locate females at night by tracking their airbourne pheromone plumes.

EGGS, LARVAE, COCOONS AND PUPAE:

White eggs with a black micropyle are laid in large clusters and larvae feed gregariously.

Typical of the Subfamily Hemileucinae, Dirphia species all have urticating spines.

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

Cedrela odorata Crataegus oxyacantha...... Fagus sylvatica Hymenaea courbaril Malus Prunus Quercus ilex Salix

West Indian Cedar English hawthorn European Beech West Indian Locust Apple Cherry/Plum Holly/Holm oak Willow

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Dirphia nora male, 85mm, Chiriqui, Panama,
on my home computer only.