Didymus metrosideri

Didymus metrosideri is an endemic weevil from the Kermadec Islands in New Zealand. This species was discovered by W. L. Wallace during the 1908 Kermedec Islands expedition.
Taxonomy.
"D. metrosideri" was originally described by Thomas Broun as "Acalles metrosiderae". In 1982 G. Kuschel proposed that the new genus Didymus replace the original genus Acalles.
Distribution.
Specimens of this beetle have been discovered on Raoul Island and on Macauley Island.