Isostigena
| Isostigena | |
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| Genus: | Isostigena Bethune-Baker, 1904  | 
Isostigena is a monotypic moth genus in the family Lasiocampidae erected by George Thomas Bethune-Baker in 1904. Its single species, Isostigena bicellata, described by the same author in the same year, was found in what is now Papua New Guinea.