Fifty-five species are discussed, keyed and illustrated, including 17 species
described as new: Airapus gazelle,
A. hollandiae, A. nondugli,
A. popondettae, A. wampuensis,
A. wauus, Aphodius pseudoreichei,
Ataenius warisensis,
Cnematoplatys torricellensis,
Rhyparus anneae, R. edieae,
R. henryi, R. mokaiensis,
R. sepikensis, R. sinewitensis,
Saprosites enarotadii, S. komumi.
Nine species are synonymised: Ataenius canaliculatus
Schmidt and Euparia wonga Stebnicka [=
Airapus granulator (Harold)];
Euparia frankenbergeri Balthasar and
E. spuria Krikken [=
Airapus parvispinus (Schmidt)];
E. papuana Petrovitz [=
Airapus spinator (Harold)];
Rhyparus australiae Lea,
R. orousseti Paulian and
R. risbeci Paulian (=
R. helophoroides Fairmaire);
Saprosites ullrichi Stebnicka (=
S. fodori Endrödi). Eleven of the New Guinean
species also occur on mainland Australia; the remainder are mostly endemic to
New Guinea and its adjacent islands.