The light and dark spots are inverted, as if we were looking at a negative film. It is interesting to note that Bachan Island, where the original subspecies croesus lives, and Halmahera Island, where this subspecies lydius lives, are only a few distance apart, but the females are completely different. (Yasui)
| Specimen upper surface (click to enlarge) |  |
|---|---|
| Specimen under surface (click to enlarge) |  |
| Box number | 072 |
| Specimen number | 00692 |
| Box-Specimen | 072-00692 |
| Scientific name | Ornithoptera croesus lydius (Felder, 1865) |
| Sex | f |
| Collection date | 197804** |
| Collection site | Halmahera I., Maluku, Indonesia |
| legit (collector) | unknown |
| Variation | |
| Plate No. in Ohya (1983) and others | Pl. 38, No. 1 |