Pleioplectron

Pleioplectron is a genus of cave wētā in the family Rhaphidophoridae, endemic to New Zealand.[1][2] These wētā are fairly common at night among the leaf litter in native forest in the South Island of New Zealand. The species look very similar to species of Miotopus, another New Zealand endemic genus, recently resurrected.[3]

Pleioplectron
Pleioplectron hudsoni
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Orthoptera
Suborder: Ensifera
Family: Rhaphidophoridae
Subfamily: Macropathinae
Genus: Pleioplectron
Hutton 1896
Species

See text

There are currently ten recognised species of Pleioplectron.[4] The genus was described by Hutton in 1896, with six species, three of which have since been moved (to Miotopus, Novoplectron, and Pachyrhamma), and two synonymised.[5] The genus Weta, erected by Chopard in 1923, is now considered a synonym of Pleioplectron.[6][4] Seven additional species of Pleioplectron were named in 2019.[4]

All but one Pleioplectron species live in the South Island.[4] The North Island species, Pleioplectron hudsoni, is widespread in forests, and females lay eggs into the soil or soft wood. In the South Island, P. simplex is sometimes found in woodpiles around houses and in cool basements between Christchurch and Invercargill. This species can be infected with parasites (a hairworm and nemotode) that cause the wētā host to drown itself.[7] An alpine species of Pleioplectron was discovered in 1993 by wildlife photographer Rod Morris in the Seaward Kaikoura Ranges and described in 2019 as Pleioplectron rodmorrisi.[4]

Species
  • Pleioplectron hudsoni Hutton, 1897
  • Pleioplectron simplex Hutton, 1897
  • Pleioplectron thomsoni (Chopard 1923)
  • Pleioplectron auratum Hegg et al. 2019
  • Pleioplectron caudatum Hegg et al. 2019
  • Pleioplectron crystallae Hegg et al. 2019
  • Pleioplectron flavicorne Hegg et al. 2019
  • Pleioplectron gubernator Hegg et al. 2019
  • Pleioplectron rodmorrisi Hegg et al. 2019
  • Pleioplectron triquetrum Hegg et al. 2019
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References
  1. Richards, Aola (1961). "Some observations on New Zealand cave-wetas". Tuatara. 9 (2): 80–83.
  2. "wetaGeta". wetageta.massey.ac.nz. Retrieved 2018-11-02.
  3. Fitness, Josephine L.; Morgan-Richards, Mary; Hegg, Danilo; Trewick, Steven A. (2018). "Reinstatement of the New Zealand cave wētā genus Miotopus Hutton (Orthoptera: Rhaphidophoridae) and description of a new species". European Journal of Taxonomy. 468 (468): 1–64. doi:10.5852/ejt.2018.468. ISSN 2118-9773.
  4. Hegg, Danilo; Morgan-Richards, Mary; Trewick, Steven A. (2019). "Diversity and distribution of Pleioplectron Hutton cave wētā (Orthoptera: Rhaphidophoridae: Macropathinae), with the synonymy of Weta Chopard and the description of seven new species". European Journal of Taxonomy. 577 (577): 1–46. doi:10.5852/ejt.2019.577. ISSN 2118-9773.
  5. Hutton, F.W. (1896). "The Stenopelmatidae of New Zealand." Transactions and Proceedings of the New Zealand Institute 29 (14): 208–242.
  6. Chopard, Lucien (1923). "On some New Zealand cave Orthoptera". Transactions and Proceedings of the New Zealand Institute. 54: 230–239.
  7. Thomas, F; Ward, D F; Poulin, R (1998). "Fluctuating asymmetry in an ornamental trait in the cave weta, Pleioplectron simplex Hutton (Orthoptera: Rhaphidophoridae): no role for parasites". Canadian Journal of Zoology. 76 (5): 931–935. doi:10.1139/z98-012. ISSN 0008-4301.


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