page_title: Hemideina maori
section_title: Morphology
hierarchical_section_title: Hemideina maori / Morphology
caption_attribution_description: English: Endemic New Zealand tree wētā. A kind of cricket: Orthoptera, Ensifera, Anostostomatidae
context_page_description: Hemideina maori, also known as the mountain stone wētā, is a wētā of the Anostostomatidae family. They are a large, flightless, nocturnal orthopteran endemic to New Zealand. Mountain stone wētā are long lived and are found on many central mountain ranges in New Zealand's South Island.
context_section_description: H. maori are a large wētā with a body length of approximately 6cm. The length of the male and female tibia do not differ (mean of tibia length = 18.6 +/- 0.17 mm for each sex). Both males and females have directional asymmetry in mandible length with the left mandible being longer than the right (Males: median 0.53mm, range: 0.01 to 1.37mm, n=48. Females: median 0.49mm, range 0 to 1.21mm, n= 35). 
  Males can show extreme dimorphism in weaponry that appears to be a result of sexual selection of male-male combat for access to females. These males have mandibles that tend to be two times longer and their head can be up to 1.5 times wider than those of females with a similar tibia length.
caption: Male mountain stone wētā
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