Pamace FlyPamace Fly| Sweden 1989 | Republic of Palau 1999 | British Tristan da Cunha 1987 | British Tristan da Cunha 1993 |
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| Yellow Pamace Fly Drosophila melanogaster (Drosophilidae) |
Pamace Fly Drosophila heteroneura (Drosophilidae) |
Pamace Fly Tristanomyia frustulifera (Drosophilidae) |
Lesser Pamace Fly Trogloscaptomyza brevilamellata (Drosophilidae) |
Pamace fly is used for research of genetics including mutation. The stamp describing this pamace fly is issued from Republic of Palau, British Tristan da Cunha, or Sweden.
| 1977 Nobel Prize for physiology and medicine award commemoration Comoro Islands | 1993 Nobel prize winner Madagascar |
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| Morgan (left second) & Muller (left third) | Morgan (left) & Muller (right) |
Thomas H. Morgan (1866-1945), geneticists of the United States of America, studied the chromosome of Pamace Fly and won Nobel Prize for Medicine in 1933. Hermann Joseph Muller (1890-1967) , Morgan's pupil, found that X-radiation could cause mutation by an experiment of the X-radiation for the Drosophila artificially and won Nobel Prize for Medicine in 1946. The left second person of the Nobel Prize for physiology and medicine award commemorative stamp in 1977 issued from the Comoros is Thomas H. Morgan and left third person is Hermann Joseph Muller. Yellow Pamace Fly (Drosophila melanogaster ) is also drawn on the bottom of a center of this stamp.
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