Argyractis drumalis

Distinguished from other Florida Crambidae by its small size (5 mm forewings), aquatic habitat association, and documented larval hosts. Distinguished from congeneric species by geographic restriction to Florida and specific host plant relationships with Pistia stratiotes and Nymphaea. Genitalia examination may be required for definitive identification from similar Acentropinae.

Small moth with forewings approximately 5 mm in length. As a member of subfamily Acentropinae, adults likely exhibit reduced or modified legs adapted for aquatic or semi-aquatic environments. Wing pattern details are not well documented in available sources.

Freshwater aquatic environments. Associated with water bodies containing the larval host plants water lettuce (Pistia stratiotes) and water lilies (Nymphaea species). Larvae are aquatic, living among roots of floating aquatic vegetation.

Endemic to Florida, North America. Type locality: Fort Drum, Florida. No verified records from outside Florida.

Adults recorded on wing from February to November, suggesting year-round activity in suitable habitats with possible peak abundance during warmer months.

Larvae feed on roots of aquatic plants: specifically Pistia stratiotes (water lettuce) and Nymphaea species (water lilies). Adult feeding habits are not documented.

• Pistia stratiotes - larval hostlarvae feed on roots
• Nymphaea - larval hostlarvae feed on roots

Aquatic larvae develop among roots of floating aquatic vegetation. Specific details of pupation and developmental stages are not documented. Adults emerge and are active above or near water surfaces.

Larvae are aquatic, inhabiting the root zone of floating aquatic plants. Adults have been observed on wing from February through November, suggesting continuous breeding in favorable conditions. Nocturnal activity patterns typical of Crambidae are likely but not specifically documented.

Larval herbivore on aquatic macrophytes. May contribute to nutrient cycling in freshwater systems through root feeding on floating vegetation. Potential role in controlling growth of invasive Pistia stratiotes, though this has not been studied.

No documented economic or medical significance. Named for Fort Drum, a military installation in Florida, reflecting historical collecting locality rather than human association. Potential interest for biological control research given larval feeding on water lettuce, an invasive aquatic weed in some regions.

• Other Argyractis speciesSimilar aquatic moth morphology; distinguished by geographic distribution and host plant specificity
• Other Acentropinae in FloridaShare aquatic adaptations; distinguished by size, host associations, and genitalia characteristics

• aquatic moth
• Florida endemic
• Crambidae
• Acentropinae
• herbivore
• freshwater
• Pistia
• Nymphaea
• water lettuce
• water lily

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life