Hilarini (Diptera: Empididae) from the Auckland Islands New Zealand, the Homoplastic Loss of the Male Silk-Producing Basitarsus in Two Insular Species, and Notes on the Empidoidea of the Subantarctic Islands

The New Zealand taxa of the superfamily Empidoidea (minus Dolichopodidae) are briefly summarized. Two species, Hilara ranui n. sp. and Hilarempis motumaka (Diptera: Empididae: Empidinae), from Auckland Islands Zealand, where they appear to be common, described. Both species show a homoplastic loss or reversal swollen, silk-producing, fore basitarsi characteristic males in their respective genera. environmental conditions Subantartic islands selective pressure on empidoid discussed.