Illustrations of the genitalia of the American species of Opas.
| Opas caudacuta Taczanowski |
| Opas caudata Mello-Leitão |
| Opas melanoleuca Mello-Leitão |
| Opas paraensis Mello-Leitão |
| Opas trilineata Mello-Leitão |
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