Caption
The phenotype of the oso allele.
Dorsal aspect.
Oriented anterior up.
After oso: outstretched small eye-outstretched on page 528 from Lindsley and Zimm (1992).
D. L. Lindsley and G. G. Zimm. The Genome of Drosophila melanogaster. Academic Press,
San Diego, CA, 1992. ISBN 0124509908.