| Answer | Crossword Clue |
|---|---|
| ARGUS | Watcher of Io. |
| ARGUS | Protector of Io |
| OUTPUT | Part of I-O |
| ARGUS | 100-eyed guardian of Io |
| ZEUS | Sexual partner of Io, Leda, Europa, and many others |
| ALOTTAMONEY | Io who? |
| ARGUS | Guard for Io. |
| EYESPOT | Io moth marking |
| MOON | Europa or Io |
| MOON | Io, to Jupiter |
| MOON | Io or Phobos |
| MOONS | Io and Phobos |
| JOVIANMOON | Io, e.g. |
| MOTH | Io or luna |
| MOONS | Io and Callisto |
| MOONS | Jupiter's Io and Callisto |
| MOONS | Io and Ganymede, e.g. |
| HEIFER | What Zeus transformed Io into |
| MOONS | Europa and Io, to Jupiter |
