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Attention: Elon Musk. Re: Driverless cars. Are there any meat ants working at Tesla? If not, talk to Dr Tanya Latty, a Research and Teaching Fellow in Entomology at the University of Sydney. Among other projects, her team is looking at how meat ants organise themselves, so this can be applied to algorithms for driverless car systems.

鈥淒riverless cars communicate with one another to minimise traffic times across the network,鈥� says Latty. 鈥淏ut what happens if one car puts in bad information? Without proper controls that gets propagated through the whole network and you can have all these unforeseen patterns.鈥�

Meanwhile, ants have been running decentralised communication systems forever. The meat ant, in particular, has become adept at preventing misinformation. Many ants leave a pheromone chemical trail that other ants follow to a food source or back to the nest. This is why ants often travel in strict lines.

鈥淏ut the meat ant goes one better,鈥� says Latty. 鈥淚f we move the pheromone trail so that it鈥檚 going in the wrong direction, an ant will default to its memory and go the way that it鈥檚 been before.鈥� The mechanics and implications of this are still being investigated.

At dinner parties, Latty is frequently misunderstood. Hearing she鈥檚 an entomologist, fellow diners are liable to request that she helps out with their cockroach infestation. 鈥淭hen there鈥檚 a long explanation about, 鈥榃ell, I don鈥檛 technically work in pest management鈥�,鈥� Latty says. Then she corrects herself. 鈥淚n a way, I do.鈥�

In Latty鈥檚 lab, researchers work with ants, bees, soldier fly larvae and even slime moulds. Often 鈥� as with the meat ants and the driverless cars 鈥� swarm intelligence is observed to create bio-inspired algorithms that can be applied to all kinds of human networks, from computers to roads. Sometimes, though, these invertebrates rebel and make a run for it.

鈥淕osh, we have breakouts all the time,鈥� says Latty. 鈥淭he lab is basically one giant breakout. We have maggots everywhere right now, crawling randomly around.鈥�

Growing up near Toronto, in Canada, the young Latty would use her mother鈥檚 nail polish to mark the slaters crawling around her childhood home, so she could tell which lived where.

鈥淚鈥檓 not sure I knew that I wanted to be an entomologist per se, but I wanted to do something with living things,鈥� she says. 鈥淢y parents both have science backgrounds, so they were just happy I was doing something sciencey, even though they weren鈥檛 particularly happy with the things that were coming home.鈥�

After school, she undertook an undergraduate degree in environmental science and biology, and was particularly drawn to an entomology class. Today, when she isn鈥檛 teaching or writing papers and grants, she鈥檚 busy in the lab or out in the field.

鈥淟ast week, I was in Tasmania with one of my students where we set up a project looking at pollination in blueberries, apples and market gardens,鈥� she says. 鈥淭his morning I spent a lot of time staring at soldier fly larvae to try to work out what they鈥檙e doing.鈥�

A day at work for Latty isn鈥檛 all about insects. She also admits to an odd affection for the mysterious slime moulds of the world. Slime mould might look like a fungus but it鈥檚 actually part of the Protista kingdom, considered the least understood of the five kingdoms of life (the others being bacteria, fungi, plants and animals).

This very elemental creature is made up of just one large cell containing many nuclei, yet it exhibits behaviours that look very much like intelligence. Using a food lure, slime mould can solve a maze, and where there are two ways out, the mould will find the shortest route 鈥� all without having anything even vaguely brain-like. But it鈥檚 the way slime moulds move that has attracted Latty鈥檚 attention.

Slime mould movement has been described as 鈥榮treaming鈥�, which it does by pulsing its internal fluid to the front of the cell. How this happens is still not fully understood since there is no apparatus controlling the pulsing, making it a form of forward motion that is uniquely decentralised.

鈥淚f it鈥檚 in contact with something it likes, such as a food source, the bit nearest the food will pulse faster and send more biomass flowing in that direction,鈥� Latty explains.

These observations give insights into the roughly 99 percent of life on Earth which is functionally brainless but sometimes looks like it鈥檚 making decisions. This includes things like the bacteria that make us sick, and macrophages that search and destroy pathogens in our bodies. It鈥檚 becoming increasingly clear that the brainless majority is not nearly as 鈥榰nintelligent鈥� as we thought.

On a completely different tack, Latty鈥檚 work with soldier fly larvae is focused on making better use of wasted food. The larvae can turn food waste into high-quality protein, which can then be processed into human food, animal feed, or even biodiesel fuel. 鈥淵ou could have fly breeding operations in city buildings, processing some of our waste,鈥� she hypothesises. 鈥淚t鈥檚 also more ethical than eating livestock because soldier fly maggots love being on top of one another, so you can keep them in super-high densities.鈥�

Our planet is an insect planet. A third of our food is insect-pollinated. Cockroaches and ants recycle our rubbish and keep us from drowning in our own waste. Insects are also an essential foundation stone of the entire food chain.

Yet now we are confronted with the idea that insect populations are crashing, as the mass of insects internationally declines by 2.5 percent a year. The effect is perhaps most broadly felt in Australia as people notice that Christmas beetles and bogong moths are missing their regular appearances, and car windscreens are virtually insect-free after country drives.

If we are noting these absences, the many birds and animals that eat insects are noticing as well.

It also pains Latty that insects 鈥� which make up more than 70 percent of all animal life 鈥� have such a low approval rating, and are rarely on the receiving end of petitions from armchair conservationists.

鈥淲e鈥檝e identified, best estimate, 20 percent of insect species, so every time we lose a species, we鈥檙e losing all the information and possibilities that species contained,鈥� she says. 鈥淚t鈥檚 like burning a library without having an index of what you鈥檝e lost.鈥�

Written by Jenny Valentish
Photography by Louise Cooper