Phylogenetic revision of Agapophytinae subf.n. (Diptera : Therevidae) based on molecular and morphological evidence

Agapophytinae subf.n. is a highly diverse lineage of Australasian Therevida e, comprising eight described and two new genera: Agapophytus Guerin-Menevi lle, Acupalpa Krober, Acraspisa Krober, Belonalys Krober, Bonjeania Irwin & Lyneborg, Parapsilocephala Krober, Acatopygia Krober, Laxotela Winterton & Irwin, Pipinnipons gen.n. and Patanothrix gen.n. A genus-level cladistic a nalysis of the subfamily was undertaken using sixty-eight adult morphologic al characters and c. 1000 base pairs of the elongation factor-1 alpha (EF-1 alpha) protein coding gene. The morphological data partition produced thre e most parsimonious cladograms, whereas the molecular data partition gave a single most parsimonious cladogram, which did not match any of the cladogr ams found in the morphological analysis. The level of congruence between th e data partitions was determined using the partition homogeneity test (HTF) and Wilcoxon signed ranks rest. Despite being significantly incongruent in at least one of the incongruence tests, the partitions were combined in a simultaneous analysis. The combined data yielded a single cladogram that wa s better supported than that of the individual partitions analysed separate ly. The relative contributions of the data partitions to support for indivi dual nodes on the combined cladogram were investigated using Partitioned Br emer Support. The level of support for many nodes on the combined cladogram was non-additive and often greater than the sum of support for the respect ive nodes on individual partitions. This synergistic interaction between in congruent data partitions indicates a common phylogenetic signal in both pa rtitions. It also suggests that criteria for partition combination based so lely on incongruence may be misleading. The phylogenetic relationships of t he genera are discussed using the combined data. A key to genera of Agapoph ytinae is presented, with genera diagnosed and figured. Two new genera are described: Patanothrix with a new species (Pat. skevingtoni) and Pat. wilso ni (Mann) transferred from Parapsilocephala, and Pipinnipons with a new spe cies (Pip. kroeberi). Pipinnipons fascipennis (Krober) is transferred from Squamopygin Krober and Pip. imitans (Mann) is transferred from Agapophytus. Agapophytus bicolor (Krober) is transferred from Parapsilocephala. Agapoph ytus varipennis Mann is synonymised with Aga, queenslandi Krober and Aga. f lavicornis Mann is synonymised with Aga. pallidicornis (Krober).