Apparently ants communicate using pheronomes, sound and touch, using their antennae. Where ants live and forage in groups, a forager which finds food marks a trail back to the colony. This trail is then followed by other ants, each of which reinforces that trail on its way back home. Once the food source is exhausted – as with the flower below – there are no returning ants and therefore no new trail and the scent slowly dissipates. This also helps the ant when a human sweeping the terrace, brushes away the rest of the flowers.

5 to remember
aparentemente – apparently
los pheronomes – the pheronomes
las antenas – the antennae
la colonia – the colony
un rastro – a trail [left by animal]

‘Concise Insect Guide’ [UK: Bloomsbury]

And if you’d like to tweet a link to THIS post, here’s my suggested tweet:
Ants communicate using pheronomes, sound & touch #insects http://wp.me/p3dYp6-1HB via @Spanish_Valley