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As saddlebacks prey on the wētā during the day, D. heteracantha are thus under constant predation pressure. [16] There is evidence suggesting that these rats have a negative impact on the population of these wētā, as is commonly the case with invasive rodents. [17] The removal of the kiore in 2004 was a success. The population size grew ...
Wētā is a loanword, from the Māori-language word wētā, which refers to this whole group of large insects; some types of wētā have a specific Māori name. [2] In New Zealand English, it is spelled either "weta" or "wētā", although the form with macrons is increasingly common in formal writing, as the Māori word weta (without macrons) instead means "filth or excrement". [3]
Tree wētā are nocturnal and arboreal, hiding in hollow tree branches during the day and feeding at night. [7] Their diet consists of leaves, flowers, fruit and small insects. [ 8 ] [ 9 ] Males have larger heads and stronger jaws than females, though both sexes will stridulate and bite when threatened.
Hemideina thoracica, commonly known as the Auckland tree wētā or tokoriro [1] [2] is a cricket-like insect (within the family Anostostomatidae). [ 2 ] [ 3 ] It is endemic to New Zealand and is found over most of the North Island , except for the Wellington region and regions 900 metres above sea level.
Deinacrida rugosa, commonly called the Cook Strait giant wētā or Stephens Island wētā, [1] is a species of insect in the family Anostostomatidae. The scientific name Deinacrida means "terrible grasshopper" and rugosa means "wrinkled".
The Banks peninsula tree wētā is a nocturnal omnivore that eats small insects, as well as the leaves of trees, shrubs, and in some cases, pasture species. [ 5 ] [ 11 ] The main predators of Hemideina ricta are non-native mammal rodents, specifically rats and possums , which are pests throughout mainland New Zealand and some offshore islands ...
Therefore, the wētā is thought to be the effective equivalent of a mouse in New Zealand ecosystems. [12] This is particularly obvious in predation and diet similarities of the wētā and mouse. Therefore, although mice may not directly prey upon wētā, the wētā numbers decrease when mice numbers are high, due to competition.
Hemideina maori, also known as the mountain stone wētā, is a wētā of the family Anostostomatidae. 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 .