Published online by Cambridge University Press: 31 May 2012
In April, 1939, a trial was made of feeding the honey-sugar-agar mixture, formula 3, devised by Holloway (1939) for feeding adult parasitic insects. The test was made with the laboratory propagated Microcryptus basizonius Grav., a parasite of conifer-feeding sawflies. The routine food used in this work is seeded raisin, in addition to water, as reported by Green (1938). An initial investigation indicated that the parasites preferred the prepared food to raisin and that they devoured it avidly.