1. AEPLI, F., T. LABHART and E. P. MEYER (1985) Structural specializations of the cornea and retina at the dorsal rim of the compound eye in hymenopteran insects. Cell Tiss. Res. 239: 19-24.
2. CAVENEY, S. (1986) The phylogenetic significance of ommatidium structure in compound eyes of polyphagan beetles. Can. J. Zool. 64: 1787-1819.
3. CAVENEY, S. and P. MCINTYRE (1981) Design of graded-index lenses in the superposition eyes of scarab beetles. Philos. Trans. R. Soc. London B 294: 589-632.
4. COSENS, D. (1976) The effect of short wavelength light on retinula cell structure in white-eye Drosophila. J. Insect Physiol. 22: 497-504.
5. EGUCHI, E. (1978) Comparative fine structure of Lepidopteran compound eyes, especially skippers (Hesperioidea). Zool. Mag. 87: 32-43 (in Japanese with an English summary).