For example , the tribe Metapterini , while having a worldwide distribution , has the majority of its diversity confined to tropical islands .
The Emesinae are cosmopolitan in distribution ; however , they are most abundant in the tropics .
The tribe Metapterini , while having a worldwide distribution , has the majority of its diversity confined to tropical islands .
The Emesinae are cosmopolitan in distribution ; however , they are most abundant in the tropics .