butterfly: diurnal insect typically having a slender body with knobbed antennae and broad colorful wings
lepidopterous insect: insect that in the adult state has four wings more or less covered with tiny scales
omomyid: extinct tiny nocturnal lower primates that fed on fruit and insects; abundant in North America and Europe 30 to 50 million years ago; probably gave rise to the tarsiers; some authorities consider them ancestral to anthropoids but others consider them only cousins