Bold truth: the world’s most meticulous taxonomists rely on patient, detective work, not flash and fame. This is how one arachnologist turned a seed of curiosity into a catalog of life that reshapes our understanding of biodiversity, one species at a time.
On 16 August 1977, Elvis Presley’s death dominated headlines for many people. But for 18-year-old Dr. Mark Harvey, that day marked the birth of a vocation. While others heard a pop culture milestone, he encountered a tiny pseudoscorpion—an ancient relative of spiders—under a rock in western Victoria and preserved it in ethanol. That moment catalyzed a lifelong journey into the wild diversity of arachnids and related invertebrates.
Today, Harvey stands among the rare group of scientists who have described more than 1,000 new species. His portfolio includes spiders, pseudoscorpions, scorpions, millipedes, and velvet worms, with his scientific journals listing 1,015 described species as of a recent count. Earlier this year, two additional pseudoscorpions—Enigmachernes dissidens and Enigmachernes parnabyi—were published in the Australian Journal of Zoology after being found on the fur of bats. His milestone 1,000th species was achieved in October, when he and colleagues described 24 new wishbone spiders in Invertebrate Systematics.
Harvey spent much of his career as the curator of arachnids and myriapods at the Western Australian Museum in Perth, and his fieldwork has taken him across the globe. His first new species description was Geogarypus rhantus, based on a specimen from the Queensland Museum in 1981. He recalls the rush of discovering a brand-new species and, with a twinkle, says he felt like the king of the world—though his memory for dates is exacting while everyday details may blur.
Taxonomy—the science of discovering, defining, cataloging, and naming species—is labor-intensive yet vital for conservation. Without knowing what a species is or where it lives, its survival cannot be safeguarded. Harvey’s childhood curiosity—collecting specimens from a Melbourne creek (now a car park)—started a lifelong passion that earned him the respect of peers who named 45 species after him. Dr. Mike Rix, curator of arachnology at the Queensland Museum, notes that Harvey’s achievement is enormous and places him among the greatest taxonomists of his generation, not only for the sheer number of species but also for his mentorship and leadership in the field of taxonomy.
Asked what makes him good at describing species, Harvey gives a humble answer: a sharp eye for detail and a knack for drawing. He typically uses straightforward Latin names sourced from a Latin dictionary, though he sometimes honors other scientists, places, or distinctive traits. A playful example is Draculoides bramstokeri, a short-tailed whip scorpion named for its cave habitat and imagined Dracula-like pincers.
His fascination with pseudoscorpions stems from their intricate biology, ancient lineage (fossils dating back hundreds of millions of years), and even quirky biology—his remark that they can run faster backward than forward resonates with his own habit as an avid basketball player.
Harvey officially retired earlier this year, and he laments that the animals he loves are disappearing due to habitat loss, climate change, and wildfires. The legacy concerns him: the world he studies could vanish before future generations have a chance to understand it. Yet his work continues. He maintains a backlog of roughly ten manuscripts, including a long-running 400-page project aiming to describe about 60 new species. He jokes that another decade could yield several hundred more discoveries, if life permits.
The journey began with a single pseudoscorpion specimen retrieved in 1977 and preserved in a jar at the WA Museum. That single find might still be awaiting formal description, hinting at how much biodiversity remains hidden and how much work lies ahead for taxonomists who, like Harvey, dedicate their careers to unveiling it.
