Omicrini from Sulawesi Utara, Indonesia (Coleoptera : Hydrophilidae : Sphaeridiinae)*

Abstract

A series of terrestrial Omicrini collected in Sulawesi during the Project Wallace expedition was studied. The recorded species belong to Omicrogiton d'Orchymont, Paromicrus Scott, Aculomicrus Smetana, Noteropagus d'Orchymont and to a new genus, Stanmalcolmia, for a new species: S. sulawesiensis. Five new species of Paromicrus are described: P. bicarinatus, P. flexus, P. punctulatus, P. scutulatus, and P. wallacei. Paromicrus bryanti d'Orchymont, P. championi d'Orchymont and P. scotti d'Orchymont are redescribed; a key is given to the examined Paromicrus. A list of the known species of Paromicrus is given. Aculomicrus is new for the Oriental region, and A. brendelli, sp. nov. is described; a key to the known species of Aculomicrus is given. Aculomicrus is likely to be another example of transPacific distribution and a discussion on its zoogeography is provided. The aedeagi and female ectodermal genitalia are figured for each species when they are available. The aedeagus of A. pusio Smetana, from Puerto Rico, is figured for the first time.*Project Wallace Publication No. 138.