Bestiary entry from the Clan Primer:
Bestiary Observations
“Mimeo with an extremely hard carapace, several times more durable than that of the typical specimen. This strain, as yet unrecorded in the Camp annals, is hunted in the Barheim Passage.”
Drops
| Common - (40-55%) |  Iron Scraps |
| Uncommon - (25-40%) | Iron Ore |
| Rare - (3-12%) | (Nothing) |
| Very Rare - (1-5%) | (Nothing) |
| With Monograph: | Arcana |
| With Canopic Jar: | High Arcana |
Percentages listed above are based on the chain level of the enemy killed. Check out the Grinding and Power Leveling page for more information.
Stolen
| Common - (55%) | (Nothing) |
| Uncommon - (10%) | (Nothing) |
| Rare - (3%) |  Deathbringer |
Poached
| (Nothing) |
Location
* There is a 20% chance that Ithuno will spawn as one of the treasure chests in the north section of Special Op Sector 5 in the Barheim Passage. Just keep re-entering the area until it appears as one of the chests. Note that you have to have initiated the Hunt Club side quest in order for Ithuno to spawn.