Tadaxa is a genus of moths of the family Erebidae. It was described by Nye in 1975.

Description Palpi with second joint reaching above vertex of head. Third joint with a tuft of hair on the inner side. Antennae of male with long bristles and cilia. Thorax and abdomen smoothly scaled. Tibia naked. Forewings with veins 8 and 9 anastomosing (fusing) to form a short areole. Hindwings with vein 5 from middle of discocellulars. Cilia of both wings are crenulate (scalloped).

Species Tadaxa bijungens (Walker, 1865) Sri Lanka Tadaxa lilacina (Butler, 1889) Dharamshala Tadaxa lintona (Swinhoe, 1901) Borneo

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