Fecha de publicación: 04/08/1992 Fuente: WIPO "varroa" This process for combatting Varroa jacobsoni by biological means, an ectoparasitic acarian specific to the genus Apis, is characterized in that there is introduced, into the environment in which said acarian may be present, an attractant product consisting of a total hexane extract of bee larvae; or of an active fraction of such an extract; or of at least one active ester derived from a C.sub.1 -C.sub.6 aliphatic alcohol and from a C.sub.10 -C.sub.24 carboxylic acid; or of a mixture of methyl and ethyl palmitates, stearates, oleates, linoleates and linolenates, or an active mixture of at least two of these esters; or ethyl palmitate, methyl palmitate, methyl linolenate or mixtures thereof, optionally with another ester.