John S. Clark (1885–1956)

[excerpted from Ant Wiki website]
His interest in entomology continued from his early years in Scotland through his adult life in Australia, but it was not until 1920 that he was able to find employment near to his preferred field as Assistant Entomologist to the Western Australian Department of Agriculture. During this period, he was the author of a series of papers on Australian forest insect pests and also began to publish basic articles on ants. In 1926, he became Entomologist to the National Museum of Victoria at Melbourne, a position he held for nearly twenty years. After World War II, he began work on an ambitious monograph of the ants of Australia. To date, a single volume of this project has seen print, covering the characteristically Australian bull-ants (subfamily Myrmeciinae).

Aside from the forest insect notes and a couple of papers on myrmecophilous beetles, Clark published almost entirely on the taxonomy of Australian ants. The most significant result of his life work adds up to some twenty articles and monographs, all published in Australia. He described somewhat more than 200 new species of ants, but probably half of these will prove to be synonyms. His most notable single achievement was the discovery of the remarkable Nothomyrmecia macrops, probably the most generalized member of the family Formicidae yet found, living or fossil.