Pachyrhamma

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Pachyrhamma
Pachyrhamma waitomoensis male.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Orthoptera
Suborder: Ensifera
Family: Rhaphidophoridae
Subfamily: Macropathinae
Genus: Pachyrhamma
Brunner von Wattenwyl, 1888
Species

See text.

Pachyrhamma is a genus of cave weta (New Zealand cave cricket, tokoriro) in the family Rhaphidophoridae, endemic to New Zealand. [1]

Contents

Cook et al. (2010) found that Gymnoplectron and Turbottoplectron are synonymised with Pachyrhamma. [1] They follow W.F. Kirby (1906) and Karny (1937) in treating Pachyrhamma as a neuter noun.

Ecology

Aggregation of P. waitomoensis Pachyrhamma waitomoensis aggregation.jpg
Aggregation of P. waitomoensis

Members of the genus are detritivorous scavengers that inhabit dark, damp refugia such as hollow logs, overhangs and caves during the day. [2] They become more active at night and venture into the surrounding undergrowth to forage. [2] They consume various organic matter such as plant seeds, fungi, animal droppings, and dead animal tissue. [2] They will cannibalise the remains of other dead weta, and may also attack still-living cave weta while they are vulnerable during ecdysis (shedding their exoskeleton). [2]

Species

When Pachyrhamma is treated as a neuter noun, species names have a neuter suffix, e.g. -ceras rather than -cera, and -ense rather than -ensis.

Related Research Articles

Anostostomatidae Family of cricket-like animals

Anostostomatidae is a family of insects in the order Orthoptera, widely distributed in the southern hemisphere. It is named Mimnermidae or Henicidae in some taxonomies, and common names include king crickets in South Africa and wētā in New Zealand. Prominent members include the Parktown prawn of South Africa, and the giant wētā of New Zealand. The distribution of this family reflects a common ancestry before the fragmenting of Gondwana.

Rhaphidophoridae Family of insects

The orthopteran family Rhaphidophoridae of the suborder Ensifera has a worldwide distribution. Common names for these insects include the cave wētā, cave crickets, camelback crickets, camel crickets, spider crickets and sand treaders. Those occurring in New Zealand, Australia, and Tasmania are typically referred to as jumping or cave wētā. Most are found in forest environments or within caves, animal burrows, cellars, under stones, or in wood or similar environments. All species are flightless and nocturnal, usually with long antennae and legs. More than 1100 species of Rhaphidophoridae are described.

Dendroplectron aucklandensis the Auckland Island wētā, is a cave wētā in the family Rhaphidophoridae, the only member of the genus Dendroplectron. It is endemic to the subantartic Auckland Islands of New Zealand.

Isoplectron is a genus of cave wētā in the family Rhaphidophoridae, endemic to New Zealand.

Gymnoplectron is a genus of cave wētā in the family Rhaphidophoridae, endemic to New Zealand.

Insulanoplectron is a monotypic genus of wētā that contains the species Insulanoplectron spinosum. I spinosum or the Snares Island wētā, is a cave wētā in the family Rhaphidophoridae, endemic to the Snares and Antipodes islands of New Zealand.

Ischyroplectron is a monotypic genus of wētā containing the species Ischyroplectron isolatum. I isolatum or the Bounty Island wētā, is a cave wētā in the family Rhaphidophoridae, endemic to Bounty Island of New Zealand. It is found under rocks.

<i>Neonetus</i> Genus of orthopteran insects

Neonetus is a genus of cave wētā in the family Rhaphidophoridae, endemic to New Zealand. All described species are small; when adult, individuals are only about 1cm long. Neonetus variegatus and N. huttoni are common in native and exotic forests but because they are small and nocturnal they are often overlooked.

<i>Pallidoplectron</i> Genus of orthopteran insects

Pallidoplectron is a genus of cave wētā in the family Rhaphidophoridae, endemic to New Zealand.

Petrotettix is a genus of cave wētā in the family Rhaphidophoridae, endemic to New Zealand.

<i>Pharmacus</i> Genus of orthopteran insects

Pharmacus is a genus of cave wētā in the family Rhaphidophoridae, endemic to New Zealand.

<i>Pleioplectron</i> Genus of orthopteran insects

Pleioplectron is a genus of cave wētā in the family Rhaphidophoridae, endemic to New Zealand. 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.

Setascutum is a genus of cave wētā in the family Rhaphidophoridae, endemic to New Zealand.

<i>Turbottoplectron</i> Genus of orthopteran insects

Turbottoplectron is a genus of cave wētā in the family Rhaphidophoridae, endemic to New Zealand.

<i>Pachyrhamma waitomoensis</i> Species of orthopteran insect

Pachyrhamma waitomoensis, known as the Waitomo cave weta, is a large species of cave weta, native to the Waitomo district of New Zealand.

<i>Pachyrhamma acanthoceras</i> Species of orthopteran insect

Pachyrhamma acanthoceras, also known as the Auckland cave wētā, is a large species of cave wētā endemic to New Zealand.

<i>Pharmacus montanus</i> Species of orthopteran insect

Pharmacus montanus, the Mount Cook flea, is a type of cave wētā found above the tree line in the South Island of New Zealand. It was first described by Francois Jules Pictet de la Rive and Henri Saussure in 1893.

<i>Pachyrhamma edwardsii</i> Species of orthopteran insect

Pachyrhamma edwardsii is a species of wētā, in the family Rhaphidophoridae, endemic to New Zealand. This species is found in caves, or large cavities where there is high humidity and little plant or animal life.

Wētā Informal group of orthopteran insects

Wētā is the common name for a group of about 70 insect species in the families Anostostomatidae and Rhaphidophoridae, endemic to New Zealand. They are giant flightless crickets, and some are among the heaviest insects in the world. Generally nocturnal, most small species are carnivores and scavengers while the larger species are herbivorous. Wētā are preyed on by introduced mammals, and some species are now critically endangered.

<i>Talitropsis sedilloti</i>

Talitropsis sedilloti is a species of flightless wētā, in the family Rhaphidophoridae, endemic to Aotearoa New Zealand. This species is common in forests throughout New Zealand and during the day can be found hiding in holes in tree branches.

References

  1. 1 2 Cook, Lorraine D.; Trewick, Steven A.; Morgan-Richards, Mary; Johns, Peter M. (2010). "Status of the New Zealand cave weta (Rhaphidophoridae) genera Pachyrhamma, Gymnoplectron and Turbottoplectron". Invertebrate Systematics. 24 (2): 131. doi:10.1071/IS09047. ISSN   1445-5226.
  2. 1 2 3 4 Richards, Aola M. (1961). "Some observations on New Zealand cave-wetas". Tuatara. 9 (2): 80–83. Retrieved 9 September 2017.