Cossoidea

Adults vary widely in appearance across families. Cossidae are typically robust with cryptic, mottled forewings. Sesiidae are distinguished by transparent wings with reduced scaling, wasp-mimicking coloration, and often narrow bodies. Brachodidae are small with broad wings. Metarbelidae and Ratardidae exhibit diverse wing patterns, often with dark markings on light backgrounds. Definitive identification to family level requires examination of genitalia and wing venation; molecular markers are increasingly used for species-level identification, particularly in Sesiidae.

Cosmopolitan distribution with highest diversity in tropical regions. In India, 165 species in 81 genera have been documented across six families. African representatives show strong association with the East African Rift System and Guineo-Congolian lowland forests. New Guinea and tropical Asia harbor endemic genera. Sesiidae is the dominant family in India (89 species), followed by Cossidae (47 species).

Larvae are internal feeders within plant tissues. Specific host associations vary by family and species but are not comprehensively documented across the superfamily.

Complete metamorphosis with egg, larva, pupa, and adult stages. Larvae are internal feeders in stems, trunks, or roots. Pupae possess spiny, moveable segments that facilitate emergence from woody exit holes—a diagnostic trait of the superfamily.

Adult emergence involves pupal extrusion from exit holes in stems and trunks using moveable, spiny pupal segments. Many Sesiidae exhibit diurnal activity and wasp-mimicking flight behavior.

Larvae function as internal borers in woody and herbaceous plants, contributing to nutrient cycling and creating exit holes used by other organisms. Some species are considered pests in forestry and agriculture due to stem and trunk boring damage.

Some species are economically significant as pests of timber, fruit trees, and ornamental plants. Clearwing moths (Sesiidae) are monitored as potentially invasive species in regions including Korea. The superfamily is subject to ongoing taxonomic revision with numerous new genera and species described from tropical regions.

• SesioideaLikely sister group sharing internal feeding larvae and spiny, moveable pupal segments with extrusion capability; distinguished by family-level differences in adult morphology and larval host use
• ZygaenoideaProposed close relative based on phylogenetic studies; relationship requires further investigation and is not definitively resolved
• TortricoideaSuggested phylogenetic affinity in some analyses; distinguished by larval feeding habits and pupal morphology

• BugGuide
• Wikipedia
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• An updated Catalogue of Cossoidea (Lepidoptera) from India
• Axelhausmannia – a new genus of Metarbelidae (Lepidoptera: Cossoidea) from the equatorial Africa
• New genus of the family Ratardidae (Lepidoptera: Cossoidea) from New Guinea
• New and little known Brachodidae from tropical Asia and Papua New Guinea (Lepidopera, Cossoidea)
• Description of two new genera and ten new species of Metarbelidae (Lepidoptera: Cossoidea) from western, north-central and eastern Africa with notes on habitats and biogeography /
• Description of two new genera and two new species of Metarbelidae (Lepidoptera, Cossoidea) from the Northeastern Congolian Lowland Forests Ecoregion (Central Africa)
• The description of a new genus and twenty-three new species of Metarbelidae (Lepidoptera : Cossoidea) from the lowland tropical rain forests of the Guineo-Congolian Region with notes on habitats and biogeography /
• Revision of the Metarbelodes Strand, 1909 genus-group<br>(Lepidoptera: Cossoidea: Metarbelidae) with descriptions of two new genera and 33 new species from high elevations of eastern and southern Africa
• Description of a new species of Stueningeria Lehmann, 2019 (Lepidoptera, Cossoidea, Metarbelidae) from Kinmen Island of Taiwan.
• Integrated Identification and Genetic Diversity of Potentially Invasive Clearwing Moths (Lepidoptera: Cossoidea: Sesiidae) in Korea.