Relationship between male head size and mating opportunity in the harem-defence, polygynous tree weta Hemideina maori (Orthoptera: Anostostomatidae)
The most distinguishing feature of the tree weta genus Hemideina (Orthoptera: Anostostomatidae) is their cephalic weaponry, which is thought to be the result of sexual selection on males to aggressively defend groups of reproductive females. Mountain stone weta H. maori is a tree weta that shelters in cavities under flat rocks on rocky outcrops in the alpine region of the South Island.