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Scientists Formally Describe Australia’s Heaviest Insect, Acrophylla alta

The 40 cm stick insect weighing 44 g has been added to the Queensland Museum collection to guide population surveys alongside conservation assessments.

Overview

  • Researchers detailed Acrophylla alta in the journal Zootaxa, highlighting unique egg morphology to confirm its status as a new species.
  • At approximately 40 cm long and 44 g, the species surpasses all previously known Australian insects in weight.
  • Two female specimens are now curated at the Queensland Museum to support ongoing taxonomic and ecological studies.
  • Scientists propose the insect’s large size evolved as an adaptation to the cold, humid, high-altitude rainforest canopy of the Atherton Tableland.
  • Field teams are planning targeted searches for male specimens, mapping its restricted habitat and evaluating its conservation status.