Stygnobia is a genus of leaf beetles found in the Samoan Islands and Fiji. It is a member of the subfamily Eumolpinae.

Species The genus contains 13 species: Stygnobia aenescens – Tutuila Stygnobia albiseta – Central Fiji Stygnobia cauta – Upolu, Tutuila, Savaiʻi, Manuʻa Islands (Taʻū) Stygnobia elliptica – Viti Levu Stygnobia evansi – Viti Levu, Ovalau, Taveuni Stygnobia leveri – Viti Levu, Ovalau, Vanua Levu, Taveuni Stygnobia metallica – Ovalau, Viti Levu, Vanua Levu, Taveuni Stygnobia minuta – Upolu, Tutuila Stygnobia nandarivatu – Viti Levu Stygnobia oconnori – Ovalau, Viti Levu, Vanua Levu, Lau Stygnobia ovalaua – Ovalau, Moala, Viti Levu Stygnobia variabilis – Upolu, Tutuila, Savaiʻi Stygnobia vermiculicollis – Upolu

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