Tachysphex nigerrimus
| Tachysphex nigerrimus | |
|---|---|
| |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Crabronidae |
| Genus: | Tachysphex |
| Species: | T. nigerrimus
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| Binomial name | |
| Tachysphex nigerrimus (Smith), 1856
| |
| Synonyms | |
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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] It was nominated for New Zealand Bug of the Year in 2024, and came in 19th place of 20 contenders.[2][3]
Name
[edit]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[4] (as in the phrase ki wīwī ki wāwā for going walkabout).[5] 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
[edit]The species was first described as Tachytes nigerrimus by Frederick Smith in 1856.[6][7] The holotype is at the British Museum of Natural History.[7]
Behaviour
[edit]T. nigerrimus makes small, simple burrows in sand or in silty riverbanks above flood level,[1][7] and can burrow into rock.[8] 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][7] The curved, white eggs of T. nigerrimus are 3.5 mm (0.14 in) long by 0.7 mm (0.028 in) wide and are laid on and cemented to the cockroach and the larval wasp eats it alive.[1][7] Each larva is typically provisioned with three cockroaches.[1][7]
Distribution and habitat
[edit]T. nigerrimus is endemic to New Zealand and is found throughout the North, South and Stewart Islands.[7][1]
Gallery
[edit]-
T. nigerrimus side view, close up, observed near Dunedin, New Zealand -
T. nigerrimus with paralysed cockroach -
T. nigerrimus
References
[edit]- ^ a b c d e f g Andrew Crowe (2002), Which New Zealand Insect?, Auckland: Penguin Books, p. 71, Wikidata Q120878300
- ^ Lewis, John. "Hope set on 'cute' cockroach-hunter wasp". Otago Daily Times Online News. Retrieved 2024-02-15.
- ^ "New Zealand Bug of the Year". Retrieved 2024-02-15.
- ^ Moorfield, John C. (2023). "wīwī". Te Aka Māori Dictionary. Retrieved 2023-02-03.
- ^ Moorfield, John C. (2023). "wāwā". Te Aka Māori Dictionary. Retrieved 2023-02-03.
- ^ 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) - ^ a b c d e f g Harris, Anthony C. (1994-10-07). "Sphecidae (Insecta: Hymenoptera)". Fauna of New Zealand. 32. doi:10.7931/J2/FNZ.32.
- ^ May, Brenda (October 1982). "Wasps in the Scoria Patch". The Wētā. 5 (2): 40. ISSN 0111-7696. Wikidata Q130184114.
External links
[edit]- Tachyspex nigerrimus discussed on RNZ Critter of the Week, 16 February 2024
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