Sphenarches anisodactylus

Distinguished from other plume moths by small size (10 mm wingspan) and specific host plant associations. Accurate identification to species level typically requires examination of genitalia or larval host plant records. Distinguished from Sphenarches caffer by distribution and subtle morphological differences in wing venation and genitalia, though these require specialist examination.

Small moth with wingspan approximately 10 mm. As a member of Pterophoridae, wings are characteristically divided into feather-like plumes with fringed margins. Specific coloration and pattern details not documented in available sources.

Tropical and subtropical environments where host plants occur. Associated with cultivated and wild flowering plants in gardens, agricultural settings, and natural vegetation. Specific microhabitat preferences not documented.

Pantropical and subtropical distribution including: western Africa, Madagascar, India, Sri Lanka, Thailand, Japan, New Hebrides (Vanuatu), Central and South America, Australia (Cape York to central New South Wales), United States (Florida, Mississippi), and Kermadec Islands (New Zealand).

Larvae feed on flower buds and flowers. Documented host plants include: Dolichos lablab, Lagenaria species, Pelargonium species, multiple Fabaceae species, Brillantaisia lamium, Caperonia castaneifolia, Phaseolus vulgaris, Hibiscus mutabilis, Thalia geniculata, Mimosa pudica, Orchidaceae species, Averrhoa bilimbi, Passiflora foetida, Antirrhinum majus, Theobroma cacao, and Lantana camara.

• Dolichos lablab - larval food plantflower buds and flowers
• Lagenaria - larval food plantflower buds and flowers
• Pelargonium - larval food plantflower buds and flowers; source of common name 'geranium plume moth'
• Fabaceae - larval food plantflower buds and flowers
• Brillantaisia lamium - larval food plantflower buds and flowers
• Caperonia castaneifolia - larval food plantflower buds and flowers
• Phaseolus vulgaris - larval food plantflower buds and flowers
• Hibiscus mutabilis - larval food plantflower buds and flowers
• Thalia geniculata - larval food plantflower buds and flowers; source of common name 'fire-flag plume moth'
• Mimosa pudica - larval food plantflower buds and flowers
• Orchidaceae - larval food plantflower buds and flowers
• Averrhoa bilimbi - larval food plantflower buds and flowers
• Passiflora foetida - larval food plantflower buds and flowers
• Antirrhinum majus - larval food plantflower buds and flowers
• Theobroma cacao - larval food plantflower buds and flowers
• Lantana camara - larval food plantflower buds and flowers

Complete metamorphosis with egg, larval, pupal, and adult stages. Immature stages described in Florida populations; specific developmental duration and phenology not documented in available sources.

Herbivore specializing on reproductive structures (flower buds and flowers) of diverse flowering plants. Role as pollinator or pest not quantified. Broad host range suggests ecological flexibility across tropical and subtropical ecosystems.

Potential minor pest of ornamental plants (Pelargonium, Antirrhinum) and crops (Phaseolus vulgaris, Theobroma cacao, Lagenaria). Not documented as economically significant pest. Presence in cultivated settings indicates adaptation to anthropogenic environments.

• Sphenarches cafferCongeneric species with overlapping distribution in Africa; distinguished by subtle genitalic and wing venation differences requiring specialist examination
• Other Pterophoridae generaSimilar plume wing morphology; Sphenarches distinguished by specific wing division pattern and genitalic structure

• plume moth
• tropical
• polyphagous
• flower feeder
• ornamental pest
• agricultural pest

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• An unusual but not unpleasant home invasion by a beneficial beetle: Big-headed ground beetle, Scarites subterraneus — Bug of the Week
• Life History and Immature Stages of a Plume Moth Sphenarches anisodactylus (Lepidoptera: Pterophoridae) in Florida