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About the Cover


Specialized mouth of a male moth (Gluphisia septentrionis). The gaping orifice serves for the intake of massive amounts of fluid at puddles of water from which the moth extracts sodium. The ion is transmitted to the female at mating and eventually to the eggs. The grid is presumed to guard against silt intake. Magnification ~multiplication sign420. See page 1816. [Electron micrograph: Maria Eisner]

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Science. ISSN 0036-8075 (print), 1095-9203 (online)