Spore consumption and aspects of the life history of Zearagytodes maculifer (Coleoptera: Leiodidae) were studied on the bracket fungi Ganoderma cf. applanatum and G. australe in the Waitakere Ranges, New Zealand. Eggs, the four larval instars and their duration are described. The 25-day development time found (egg to adult) is short compared with other mycophagous beetles inhabiting bracket fungi. Numbers of larvae and adult beetles found on hosts were only weakly associated with season, and both larvae and adults were active in winter.