This is a particularly black specimen of the subspecies occidentalis with a black female. Why is it so different from the Arfak Mountains, where the original subspecies arfakensis lives, even though they are connected to each other on the same peninsula? It is a curious case of genetic differentiation. (Yasui)
| Specimen upper surface (click to enlarge) |  |
|---|---|
| Specimen under surface (click to enlarge) |  |
| Box number | 078 |
| Specimen number | 00754 |
| Box-Specimen | 078-00754 |
| Scientific name | Ornithoptera arfakensis occidentalis Morita & Takenaka, 1998 |
| Sex | f |
| Collection date | 199810** |
| Collection site | Sorong, Irian Jaya, Indonesia |
| legit (collector) | unknown |
| Variation | ab. (FW : reduced white marks)（前翅：白色斑が小さい変異） |
| Plate No. in Ohya (1983) and others |