1. AIKEN, R. B. (1985) Biol. Rev. 60: 163-211.
2. ARNTZ, B. (1972) J. Comp. Physiol. 80: 309-311.
3. BAILEY, W. J. (1983) J. Aust. Entomol. Soc. 22: 35-38.
4. COKL, A. and J. THEISS (1987) J. Insect Physiol. 33: 371-377.
5. JANSSON, A. (1989) Ann. Entomol. Fenn. 55: 161-175.