Researchers rewrite termite classification system

But not only do the that cause serious problems for humans only make up 3.5% of all termite species, termites also serve as crucial ecosystem engineers, maintaining the infrastructure of various environments. Like earthworms, they circulate nutrients by decomposing plant materials, and they play the important role of bioturbators. Much like plowing a field, termites aerate the soil, expose underground nutrients, and let water infiltrate deeper layers of soil—all vital to plant life.

Termites are also exemplary builders; their mounds stay cool under the blistering sun, inspiring energy-free air conditioning systems in smart architecture.

Just as many ecosystems rely on the infrastructure provided by termites, so too does the study of termites require a solid foundation. And now, a new system for termite classification has been created thanks to the effort of no less than 46 researchers from across the world.

Their work, built on expert consensus and extensive data analyses, has been published in Nature Communications.

"We have resolved the ambiguity of the previous system with a modular and very robust classification of the termite family," says Dr. Simon Hellemans, lead author and member of the Evolutionary Genomics Unit at the Okinawa Institute of Science and Technology (OIST).

The new tree of life of termite families and subfamilies. Each branching indicates a split between families and subfamilies from their last common ancestor. Red branches are subfamilies that were all previously defined as Termitinae, whereas blue branches were previously defined as Rhinotermitidae. Credit: OIST. Termite / T. F. Carrijo, P. Eggleton, G. Josens, S. Hellemans, C. M. Kalleshwaraswamy, M. M. Rocha, R. H. Scheffrahn and J. Šobotník.

Comparison of the fontanelle, the opening in the center of the heads which secretes a defensive liquid, between two termite species – the pest-species C. gestroi (left) and the non-pest D. longilabius (right). Previously, the Rhinotermitidae family included both species with (D. longilabius) and without (C. gestroi) a narrow groove running from the fontanelle, but this inconsistency has now been cleared up thanks to phylogenetic analyses and by removing species without the grove like C. gestroi. Credit: Left: Thomas Chouvenc, UF/IFAS. Right: Simon Hellemans, OIST.

Close-up of a Coptotermes gestroi soldier termite. Credit: Thomas Chouvenc, UF/IFAS.

Coptotermes gestroi soldier termite, commonly known as the Asian subterranean termite. The latex-like secretion at the mandibles is a defensive response and serves to both make it more difficult for predators to attack or consume the termite, while also signaling other termites about the attack, allowing for coordinated defense. The secretion also has antimicrobial properties. Credit: Thomas Chouvenc, UF/IFAS.