Tachysphex nigerrimus

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Tachysphex nigerrimus
Tachysphex nigerrimus 6124202.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Crabronidae
Genus: Tachysphex
Species:
T. nigerrimus
Binomial name
Tachysphex nigerrimus
(Smith), 1856

Tachysphex nigerrimus, also known as the black cockroach hunter, is a species of wasp in the family Crabronidae. It is endemic to New Zealand, the only species of Tachysphex that occurs there. [1]

Contents

This species is found throughout New Zealand. [1] It makes small, simple burrows in sand or in silty riverbanks above flood level. [1] [2] The female T. nigerrimus hunts for native cockroaches (such as Celatoblatta or Parellipsidion ), which she stings, paralysing them, and drags or flies them back to her burrow. [1] [2] The curved, white eggs of T. nigerrimus are 3.5 mm long by 0.7 mm wide and are laid on and cemented to the cockroach and the larval wasp eats it alive. [1] [2] Each larva is typically provisioned with three cockroaches. [1] [2]

Tachysphex nigerrimus was nominated for New Zealand Bug of the Year in 2024, and came in 19th place of 20 contenders. [3] [4]

Name

T. nigerrimus side view, close up, observed near Dunedin, New Zealand Tachysphex nigerrimus 1453043.jpeg
T. nigerrimus side view, close up, observed near Dunedin, New Zealand

This species is known as the black cockroach-hunting wasp or black cockroach hunter in English, and in Māori as ngaro wīwī (written "ngaro wiwi", without macrons, in older sources). Ngaro is a generic Māori word for fly or wasp, and wīwī conveys walking to distant places [5] (as in the phrase ki wīwī ki wāwā for going walkabout). [6] This name is used for all the New Zealand hunting wasps in the families Eumenidae, Pompilidae, and Sphecidae, such as Pison spinolae and Priocnemis monachus. [1]

Taxonomy

The species was first described as Tachytes nigerrimus by Frederick Smith in 1856. [7] [2] The holotype is at the British Museum of Natural History. [2]

Distribution and habitat

With paralysed cockroach Tachysphex nigerrimus 59466716.jpg
With paralysed cockroach
T. nigerrimus Tachysphex nigerrimus 251282776.jpeg
T. nigerrimus

T. nigerrimus is endemic to New Zealand and is found throughout the North, South and Stewart Islands. [2]

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References

  1. 1 2 3 4 5 6 7 Andrew Crowe (2002), Which New Zealand Insect?, Auckland: Penguin Books, p. 71, Wikidata   Q120878300
  2. 1 2 3 4 5 6 7 Harris, Anthony C. (1994-10-07). "Sphecidae (Insecta: Hymenoptera)". Fauna of New Zealand. 32. doi:10.7931/J2/FNZ.32.
  3. Lewis, John. "Hope set on 'cute' cockroach-hunter wasp". Otago Daily Times Online News. Retrieved 2024-02-15.
  4. "New Zealand Bug of the Year" . Retrieved 2024-02-15.
  5. Moorfield, John C. (2023). "wīwī". Te Aka Māori Dictionary. Retrieved 2023-02-03.
  6. Moorfield, John C. (2023). "wāwā". Te Aka Māori Dictionary. Retrieved 2023-02-03.
  7. Smith, Frederick (1856). Catalogue of hymenopterous insects in the collection of the British Museum, part IV, Sphecidae, Larridae, and Crabronidae. London. p. 302.{{cite book}}: CS1 maint: location missing publisher (link)