This hypothesis was addressed by studying the breeding phenology of the nymphalid butterfly Hypolimnas bolina (L.) in the Australian wet-dry tropics. This species favours small, herbaceous larval ...

For example, when researchers in Samoa looked at a population of infected Hypolimnas bolina butterflies, they found 100 females for every male, all thanks to this microscopic hitchhiker.

But rich in minerals, protein and sodium, these are perfect meals for some butterflies and moths. The great eggfly (Hypolimnas bolina) will also gladly sip sweat from human foreheads, and it thinks ...