Epipleminae

Distinguished from the related subfamily Uraniinae by small size and drab, non-iridescent coloration. The T-shaped resting posture—hindwings folded along the abdomen with forewings extended horizontally—is diagnostic. Some species can be identified by their ability to roll wings into a stick-like shape, a trait otherwise known only in the unrelated geometrid subfamily Ennominae. The sexually dimorphic tympanal organ requires dissection for verification. Historically confused with Geometridae and Drepanidae; correct placement requires examination of tympanal structure and resting posture.

Small, drab-colored moths lacking the bright coloration characteristic of the related subfamily Uraniinae. Sexual dimorphism is pronounced in the structure of the tympanal organ, with morphological details unique among Lepidoptera. Wing shape varies among genera, with some species possessing wings capable of being rolled into a stick-like configuration.

Pantropical montane zones; collections documented from elevations around 748 m in subtropical China. Nocturnal, attracted to light traps.

Primarily pantropical, occurring throughout tropical regions worldwide with limited penetration into temperate zones. Documented from Asia (China, Korea), with distribution extending across tropical regions globally.

Nocturnal activity pattern; specific seasonal timing not documented in available sources

Nocturnal. Resting posture distinctive: hindwings folded longitudinally along the abdomen, forewings extended horizontally or rolled longitudinally, creating a T-shaped dorsal silhouette when viewed from above. Some species can roll wings into a stick-like shape, possibly functioning as crypsis. This wing-rolling behavior is unique to Epipleminae among Uraniidae and convergent with Ennominae (Geometridae).

Three species documented as minor pests of commercial plants: Leucoplema dohertyi, Epiplema fulvilinea (taxonomic placement uncertain), and Dysaethria moza (formerly placed in Epiplema). Overall economic impact limited.

• UraniinaeBrightly colored, often iridescent, with larger size; lacks drab coloration and T-shaped resting posture of Epipleminae
• GeometridaeHistorically misclassified together; Geometridae lack the sexually dimorphic tympanal organ and distinctive wing-folding behavior of Epipleminae
• DrepanidaeHistorically misclassified together; Drepanidae lack the unique tympanal morphology and T-shaped resting posture
• Ennominae (Geometridae)Convergent evolution of wing-rolling behavior; unrelated but shares stick-like wing rolling, distinguished by family-level characters and tympanal structure

Historically placed in Geometridae or Drepanidae based on superficial phenetic resemblance; these placements are now recognized as erroneous. The genus Epiplema is known or suspected to be non-monophyletic, and species such as Epiplema fulvilinea do not belong in this genus. Several other genera (Monobolodes, Phazaca) are suspected to be non-monophyletic or invalid.

• moths
• Uraniidae
• pantropical
• nocturnal
• sexual dimorphism
• tympanal organ
• wing rolling
• cryptic coloration

• BugGuide
• Wikipedia
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• The first mitogenomes of the subfamily Epipleminae (Lepidoptera, Uraniidae) and phylogenetic analysis of Macroheterocera.