Biology:Celatoblatta

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Celatoblatta is a genus of cockroaches in the family Blattidae with species from Australia, New Zealand and New Caledonia.[1] "Celato" means concealed and the members of this genus are all small, fast-moving nocturnal species that hide during the day under bark and rocks.[2] In Australia the genus is known as hooded cockroaches, after the distinctive way the seventh abdominal tergite extends over the ninth and tenth like a hood.[1]

The genus was created by Peter Johns in 1966,[3] and Karlis Princis later added several species from Australia, New Guinea, and New Caledonia.[4][5] Phylogenetic studies, however, suggested the resulting genus is not monophyletic,[6][7] although the 14 New Zealand members of Celatoblatta as defined by Johns do seem to form a monophyletic group.[8][9][10]

The New Zealand Celatoblatta are all flightless with short or very short tegmina.[3] They have 7 or 8 instars, with overlapping generations and eggs laid all year. Eggs are laid in brown capsules called oothecae which protect the 10–14 developing nymphs.[2][11] Most New Zealand Celatoblatta species live in native forest, but four prefer high elevations above the tree line.[8][3] Australian species are mostly restricted to Queensland, and are generally shiny black with small tegmina and wings.[1] New Zealand species are generally brown with lighter patches on the thorax, although colour is often variable within a species.[3]

The Otago alpine cockroach Celatoblatta quinquemaculata has been the subject of many studies due to its ability to survive freezing down to -9 °C[12][13] and it is one of the few species where intercellular freezing is thought to allow ice crystals to reach beyond the gut to the haemolymph.[14][15]

Celatoblatta currently contains the following species:[7][16][17]

  • Celatoblatta anisoptera Johns, 1966 – New Zealand
  • Celatoblatta brunni Johns, 1966 – Chatham Islands
  • Celatoblatta fuscipes Johns, 1966 – New Zealand
  • Celatoblatta hesperia Johns, 1966 – New Zealand
  • Celatoblatta immunda (Shelford, 1911) – Queensland
  • Celatoblatta kauri Morgan-Richards & Trewick, 2025
  • Celatoblatta laevispinata Johns, 1966 – New Zealand
  • Celatoblatta montana Johns, 1966 – New Zealand
  • Celatoblatta nigrifrons (Chopard, 1924) – New Caledonia
  • Celatoblatta notialis Johns, 1966 – New Zealand
  • Celatoblatta pallidicauda Johns, 1966 – New Zealand
  • Celatoblatta papuae (Shaw, 1925) – New Guinea, Solomon Islands
  • Celatoblatta peninsularis Johns, 1966 – New Zealand
  • Celatoblatta perpolita (Mackerras, 1968) – Queensland
  • Celatoblatta punctipennis (Chopard, 1924) – New Caledonia
  • Celatoblatta quinquemaculata Johns, 1966 – New Zealand
  • Celatoblatta sedilloti (Bolívar, 1883) – New Zealand
  • Celatoblatta shawi (Princis, 1966) – Queensland
  • Celatoblatta subcorticaria Johns, 1966 – New Zealand
  • Celatoblatta tryoni (Shaw, 1925) – Queensland
  • Celatoblatta undulivitta (Walker, 1868) – New Zealand
  • Celatoblatta vulgaris Johns, 1966 – New Zealand
  • Celatoblatta zonata (Princis, 1954) – Australia

In a 2022 revision of the group Celatoblatta was moved to the subfamily Polyzosteriinae; Celatoblatta shelfordi (Shaw, 1925), C. quadriloba (Mackerras, 1968) and C. baldwinspenceri (Mackerras, 1968) were assigned to the genus Austrostylopyga, which was resurrected after being previously synonymised with Celatoblatta; and C. marksae (Mackerras, 1968) was moved back to Temnelytra.[7] The New Caledonian species are more closely related to Polyzostera than to New Zealand Celatoblatta species.[6]

References

  1. ↑ 1.0 1.1 1.2 Rentz, David C. (2014). A guide to the cockroaches of Australia. Collingwood, Victoria: CSIRO Publishing. pp. 118–119. ISBN 9780643103207. 
  2. ↑ 2.0 2.1 Zervos, S. (1984). "Seasonality in a field population of two New Zealand cockroaches (Blattodea)" (in en). New Zealand Journal of Zoology 11 (3): 307–312. doi:10.1080/03014223.1984.10428242. ISSN 0301-4223. http://www.tandfonline.com/doi/abs/10.1080/03014223.1984.10428242. 
  3. ↑ 3.0 3.1 3.2 3.3  , Wikidata Q125308748
  4. ↑ Princis K (1970). Blattarien von den Inseln Rennell und Bellona. The Natural History of Rennell Island, British Solomon Islands 6: 31–37.
  5. ↑ Princis K (1971) Blattariae: Subordo Epilamproidea. Fam.: Ectobiidae. In: Beier M (Ed.) Orthopterorum Catalogus, Pars 14. W. Junk, 's-Gravenhage, 1041–1224.
  6. ↑ 6.0 6.1 Malem, Julien; Robillard, Tony; Cluzel, Dominique; Bellier, Loïc; Nattier, Romain; Grandcolas, Philippe; Legendre, Frédéric (2023). "Origins of old lineages in New Caledonia: A geologically informed test of the island-hopping hypothesis" (in en). Journal of Biogeography 50 (9): 1587–1601. doi:10.1111/jbi.14673. ISSN 0305-0270. Bibcode: 2023JBiog..50.1587M. https://onlinelibrary.wiley.com/doi/10.1111/jbi.14673. 
  7. ↑ 7.0 7.1 7.2 Djernæs, Marie; Murienne, Jérôme (2022). "Phylogeny of Blattoidea (Dictyoptera: Blattodea) with a revised classification of Blattidae". Arthropod Systematics & Phylogeny 80: 209–228. doi:10.3897/asp.80.e75819. ISSN 1864-8312. https://arthropod-systematics.arphahub.com/article/75819/. 
  8. ↑ 8.0 8.1 Morgan-Richards, Mary; Marshall, Craig J.; Biggs, Patrick J.; Trewick, Steven A. (2023). "Insect Freeze-Tolerance Downunder: The Microbial Connection" (in en). Insects 14 (1): 89. doi:10.3390/insects14010089. ISSN 2075-4450. PMID 36662017. 
  9. ↑ Goldberg, Julia; Trewick, Steven A. (2011). "Exploring Phylogeographic Congruence in a Continental Island System" (in en). Insects 2 (3): 369–399. doi:10.3390/insects2030369. ISSN 2075-4450. 
  10. ↑ Chinn, Warren G.; Gemmell, Neil J. (2004). "Adaptive radiation within New Zealand endemic species of the cockroach genus Celatoblatta Johns (Blattidae): a response to Plio-Pleistocene mountain building and climate change" (in en). Molecular Ecology 13 (6): 1507–1518. doi:10.1111/j.1365-294X.2004.02160.x. ISSN 0962-1083. PMID 15140094. https://onlinelibrary.wiley.com/doi/10.1111/j.1365-294X.2004.02160.x. 
  11. ↑ Zervos, S. (1987). "Notes on the size distribution of a New Zealand cockroach, Celatoblatta vulgaris" (in en). New Zealand Journal of Zoology 14 (2): 295–297. doi:10.1080/03014223.1987.10422998. ISSN 0301-4223. https://www.tandfonline.com/doi/full/10.1080/03014223.1987.10422998. 
  12. ↑ Block, William; Wharton, David A.; Sinclair, Brent J. (1998). "Cold tolerance of a New Zealand alpine cockroach, Celatoblatta quinquemaculata (Dictyoptera, Blattidae)" (in en). Physiological Entomology 23 (1): 1–6. doi:10.1046/j.1365-3032.1998.2310001.x. ISSN 0307-6962. https://resjournals.onlinelibrary.wiley.com/doi/10.1046/j.1365-3032.1998.2310001.x. 
  13. ↑ Sinclair, Brent J. (2001). "Field ecology of freeze tolerance: interannual variation in cooling rates, freeze-thaw and thermal stress in the microhabitat of the alpine cockroach Celatoblatta quinquemaculata" (in en). Oikos 93 (2): 286–293. doi:10.1034/j.1600-0706.2001.930211.x. ISSN 0030-1299. https://onlinelibrary.wiley.com/doi/10.1034/j.1600-0706.2001.930211.x. 
  14. ↑ Worland, M. R.; Wharton, D. A.; Byars, S. G. (2004-02-01). "Intracellular freezing and survival in the freeze tolerant alpine cockroach Celatoblatta quinquemaculata". Journal of Insect Physiology 50 (2): 225–232. doi:10.1016/j.jinsphys.2003.12.001. ISSN 0022-1910. PMID 15019525. https://www.sciencedirect.com/science/article/pii/S0022191003002555. 
  15. ↑ Sinclair, Brent J.; Renault, David (2010). "Intracellular ice formation in insects: Unresolved after 50years?" (in en). Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology 155 (1): 14–18. doi:10.1016/j.cbpa.2009.10.026. PMID 19878734. https://linkinghub.elsevier.com/retrieve/pii/S1095643309011301. 
  16. ↑ Beccaloni, G. W.. "Genus Celatoblatta Johns, 1966". http://cockroach.speciesfile.org/Common/basic/Taxa.aspx?TaxonNameID=504. 
  17. ↑ Morgan-Richards, Mary; Trewick, Steven A. (2025). "A new species of Celatoblatta cockroach that coincides with the distribution of kauri forests in New Zealand". New Zealand Journal of Zoology 0 (0): 1–9. doi:10.1080/03014223.2025.2525262. ISSN 0301-4223. https://www.tandfonline.com/doi/abs/10.1080/03014223.2025.2525262. 
  • Data related to Celatoblatta at Wikispecies

Wikidata ☰ Q10444615 entry



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