The Australian species of two genera, Nothorhaphium,
gen. nov. andSyntormon Loew (Diptera : Dolichopodidae),
are described, illustrated and keyed, and discussed in context of the Western
Pacific fauna. The two genera are phylogenetically close. The Australian
Nothorhaphium comprises four species:
N. aemulans Becker, comb. nov. (=
Xiphandrium pudicum Parent, syn. nov.),
N. nudicorne, sp. nov.,
N. callosum, sp. nov., and
N. curalo, sp. nov. The montane New Guinean
N. oro, sp. nov. is also described, and its close
relationship with the predominantly southern temperate Australian fauna is
discussed, suggesting it was part of a common Australian fauna which became
isolated with the uplift of New Guinea in the mid–late Tertiary. The
Australian Syntormon comprises six species:
S. xiphandroides Parent,
S. flexibile Becker,
S. singularis, sp. nov.,
S. tasmanense, sp. nov.,
S. janelithae, sp. nov., and
S. lucare, sp. nov. As well,
S. aotearoa is described from New Zealand. Genera once
thought to be close to Syntormon are discussed. The
subfamily Rhaphiinae is briefly discussed, noting the problem of subfamily
definition. The New Zealand Syntormon formosus Parent is
placed in new combination [=
Dactylonotus formosus (Parent)] in a genus
previously known only from southern Africa.