A new genus Palophagus and a new subfamily Palophaginae are proposed for a megalopodid chrysomeloid beetle reared from male strobili (cones) of Araucaria bidwillii from south Queensland, Australia. The beetle feeds as adult and larva on pollen. The larva pupates in the soil where it goes through an additional but inactive instar. The beetle shares with Megalopodinae a mesonotal stridulatory organ and the same characteristic male and female genitalia but differs in various other structures. The relationship of the subfamily is discussed. A key to families of Chrysomeloidea based on the male and female genitalia is offered as well as keys to the genera and species of Palophaginae. Palophagus bunyae and P. australiensis are described as new, and Cucujopsis setijer Crowson is transferred from Orsodacninae to Palophaginae and redescribed. Habitus drawings of two adults are provided. The immature stages of Palophagus species are described and illustrated.

Adult and larval characters place the monophyletic Ectemnorhinus-group of genera firmly within the former Adelognatha and new concept of Brachycerinae. The group, previously with tribal or subfamily status, is most closely related to the genera Heterexis Broun and Oclandius Blanchard from the Auckland and Campbell Islands. A cladistic analysis of the genera based on 35 adult and 11 larval characters, resulted in the following six genera being recognised: Christensenia Brinck, Canonopsis C. O. Waterhouse, Disker Dreux & Voisin, Palirhoeus Kuschel, Bothrometopus Jeannel and Ectemnorhinus G. R. Waterhouse. Ectemnorhinus angusticollis (C. O. Waterhouse) is transferred to Bothrometopus, Mesembriorrhinus parvulus Jeannel, also transferred to Bothrometopus, is reinstated to species level. Ectemnorhinus curtus Jeannel is placed in synonymy with Ectemnorhinus fuscus Enderlein, which is removed from synonymy with Ectemnorhinus viridis G. R. Waterhouse and reinstated as valid. Ectemnorhinus hibernantium (Dreux & Voisin) is placed in synonymy with E. geniculatus Jeannel.

The historical status of the family Platypodidae is reviewed and the family is revised. Results of a cladistic analysis based on 35 terminal taxa and 80 adult morphological characters show that the current placement of Platypodidae makes the subfamily Scolytinae paraphyletic. Moreover, several important genera included in Scolytinae are shown to be members of Cossoninae (i.e. the placement of Protoplatypus Wood and Phylloplatypus Kato in Cossoninae is confirmed). Based on these results, the status of Platypodidae as a family and subfamily is rejected, Scolytinae thereby becoming a monophyletic taxon. Araucarius groups in Scolytinae instead of Cossoninae in the analysis on a single step only, but it is suggested that it be retained in Cossoninae until this subfamily is submitted to a similar phylogenetic study. Three genera and four species of Cossoninae are described as new: Dobionus Kuschel, gen. nov.: type species D. araucarinus Kuschel, sp. nov. (with the inclusion of D. brachyrhinus (Montrouzier)); Coptonus Kuschel, gen. nov.: type species C. fijianus Kuschel, sp. nov. (with the inclusion of C. papuanus Kuschel, sp. nov.) and Dissostomus Kuschel, gen. nov.: type species D. hornabrooki Kuschel, sp. nov.

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The vaginal and intersegmental pouches observed in female Curculionoidea are reported and termed according to location. Subfamily characters are reassessed and 18 taxa previously with subfamily rank are demoted to tribes of Molytinae. These are listed with the other tribes of the world fauna of the subfamily. A few general remarks on the New Zealand molytine elements are made and a key to the genera of the tribe Molytini of New Zealand is presented. Four species are described from