Sugar ants lead to sweet rediscovery

May 14, 2018 by Samille Mitchell, Particle

The rediscovery of the arid bronze azure butterfly has scientists racing to save them from extinction.

When the last known population of the arid bronze azure butterfly disappeared from its only known location near Kalgoorlie in 1993, conservationists feared it had become extinct.

Hoped dimmed further in 2006 when a photographer attempting to photograph every butterfly species in the country again failed to encounter the butterfly at the site.

Disappointed, the photographer packed up and headed west to the coast. Taking a shortcut off the main highway to his next target site, he noted a flash of colour on the road near a nature reserve outside Mukinbudin. He was about 300km away from the arid bronze azure butterflies' former home.

Butterflies crossing the road. Medium-sized. Fast-flying. Dark brown to black with iridescent bronze or purple bronze flashes on the upper side of their wings.

Surely it couldn't be the arid bronze azure?

Surely he couldn't be so lucky as to stumble upon a new population by sheer chance?

The photos he took that day and subsequent visits to the site confirmed this was indeed a new population of the critically endangered species.

Race to save a butterfly

Excited, state conservation staff raced to the region to work out the size of the population.

They've visited nearly every year since to monitor the population, which has now almost doubled in size.

And along the way, they've become enraptured by this unusual species.

Not only it is extremely rare, but it has adapted to survive in its arid home.

Bizarre lifestyle traits

Like some other butterfly species, the arid became fed up with the scarcity of plants offering food in this arid region.

It decided to change the menu. Its next choice of cuisine? Ants.

Arid azure butterfly larvae have adapted to emit a chemical that fools bearded sugar ants into thinking the larvae are queen ants.

The duped escort the larvae to their ant nurseries where the butterfly larvae are either fed by the ants or, more likely, feed on the baby ants.

Just what happens deep below ground remains a mystery.

So reliant on ants have the butterflies become that their very survival is now inextricably linked to the ants' survival.

Future hope

Department of Biodiversity, Conservation and Attractions senior research scientist Matthew Williams says the ants are key to finding and supporting new populations of the rare butterfly.

By tracking down other populations of the ants, department staff have recently found a second population of the butterflies about 70km away.

And they are now seeking out another suitable ant to which they could translocate butterflies.

"All it would take to translocate them is a fast car and one guy with a net," Matt says.

"You'd need to catch perhaps five or 10 females, put them in jars and drive them to the new site to let them go."

With patches of native bush becoming fewer and farther between, such a move may be the only hope of helping this rare and bizarre butterfly to survive.

Explore further: Goldfields ant nests under surveillance for elusive butterfly

Related Stories

Butterflies deceive ants using chemical strategies

April 8, 2015

Oakblue butterflies may use a variety of chemical strategies to deceive ants and avoid their attack, according to a study published April 8, 2015 in the open-access journal PLOS ONE by Yoko Inui from Osaka Kyoiku University, ...

Butterfly larvae mimic queen ant to avoid detection

April 9, 2014

Parasitic butterfly larvae may mimic ants' acoustic signals to aid in the infiltration of their host colonies, according to results published April 9, 2014, in the open access journal PLOS ONE by Marco Sala from University ...

Zoologist bemoans the continuing loss of butterfly species

July 15, 2016

(Phys.org)—Jeremy Thomas, a zoologist with the University of Oxford, has written a Perspective piece for the journal Science offering an overview of the declining numbers of butterfly species around the globe and the reasons ...

Recommended for you

Pigs form a visual concept of human faces

August 17, 2018

Contrary to previous studies, pigs appear to have better visual discrimination abilities than had previously been assumed. Cognition researchers from the Messerli Research Institute showed in a new study that pigs not only ...

Are our wild animals growing old gracefully?

August 17, 2018

For most of us, the body's deterioration is an unavoidable part of getting older. This age-related decline, known as "senescence", can occur subtly and slowly for some individuals, while for others it happens much faster. ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.