Dalaca chiriquensis is a species of moth in the family Hepialidae (ghost moths), originally described by the German entomologist Rudolf Pfitzner in 1914. It is known from Panama, specifically from Chiriquí Province, which is the source of its specific epithet.
Taxonomic Status
Dalaca chiriquensis is currently recognized as a junior synonym of Gymelloxes prosopus (Druce, 1901). Following taxonomic revisions that revalidated the genus Gymelloxes based on distinct male genitalia morphology and molecular data (such as mtDNA barcodes), the species was transferred out of the genus Dalaca. The valid name for this taxon is therefore Gymelloxes prosopus.
Type Material
The species was described from a single female specimen collected by Pfitzner in Chiriquí, Panama. The lectotype (a female, designated by Schröder in 1967) is housed at the Senckenberg Museum in Frankfurt, Germany (specimen number SMFT 81). An illustration of the female in dorsal view appears in Pfitzner (1937, plate 99b). No male specimen was described in the original publication.
Description
Adults of Gymelloxes prosopus (the valid name) have a robust body typical of Hepialidae, lacking a functional proboscis (adults are non-feeding). The wingspan measures approximately 40–60 mm, with females (50–60 mm) generally larger than males (40–50 mm). Forewings are pale ochreous with diffuse brown shading along veins, while hindwings are lighter and uniformly pale ochreous. Sexual dimorphism is evident, with females having more rounded wings.
Distribution
The species is distributed in northern South America and Central America, with confirmed records from Panama (Chiriquí Province) and Colombia (including the type locality at Bonda). Potential occurrences in adjacent areas such as Costa Rica and Ecuador have been suggested based on genus-level distribution patterns.
Biology
The biology of this species remains poorly documented. Like other Hepialidae, the larvae are likely subterranean, boring into the roots and stems of plants. Adults are probably crepuscular (active at twilight) and have a short lifespan of a few days, during which they do not feed.
Conservation
The species lacks an IUCN Red List assessment. Observations are sparse, with only a handful of records on citizen science platforms. Potential threats include habitat loss due to deforestation in the Central American highlands.
