Biology:Cryptocroton

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Cryptocroton papuanum is a species of tick native to New Guinea, and Northern Queensland.[1] Specimens have been found on ground-feeding birds, such as cassowaries and crowned pigeons, as well as on short-beaked echidnas.[2] It is the only member of the monotypic genus Cryptocroton.

Morphology and systematics

As its name suggests, the genus is cryptic, as the specimens cannot be distinguished, morphologically, from Amblyomma. Phylogenies inferred from mitochondrial genomes and rRNA have confirmed that the genus has at least 25% pairwise genetic difference from other genera.[1]

The species has a rounded body profile, similar to other former Aponomma, and is identifiable by its two small, widely separated coxal spurs and midline trochanter spurs.[3] Despite having eyes, the species may be confused for Bothriocroton concolor, an eyeless tick of echidnas present in North Queensland, which shares a similar rounded body profile and punctate male conscutum. Indeed, Cryptocroton papuanum arises from the Haematobothrion lineage, which includes the genera Bothriocroton, Alloceraea, and Haemaphysalis, among others.

Ixodidae
Prostriata

Ixodes

Metastriata

Robertsicus

Amblyocephalus

Amblyomma

Dermacentor

Rhipicentor

Hyalomma

Rhipicephalus

Haematobothrion

Cryptocroton

Bothriocroton

Archaeocroton

Alloceraea

Haemaphysalis

Ixodidae cladogram after Barker et al., (2024)[4]

References

  1. 1.0 1.1 Barker, Stephen C.; Kelava, Samuel; Mans, Ben J.; Apanaskevich, Dmitry A.; Seeman, Owen D.; Gofton, Alexander; Shao, Renfu; Teo, Ernest J. M. et al. (2024-02-12). "The first cryptic genus of Ixodida, Cryptocroton n. gen. for Amblyomma papuanum Hirst, 1914: a tick of North Queensland, Australia, and Papua New Guinea" (in en). Zootaxa 5410 (1): 91–111. doi:10.11646/zootaxa.5410.1.5. ISSN 1175-5334. PMID 38480255. https://mapress.com/zt/article/view/zootaxa.5410.1.5. 
  2. Barker, Stephen C.; Barker, Dayana (2023-03-08). "Ticks of Australasia: 125 species of ticks in and around Australia". Zootaxa 5253 (1): 1–670. doi:10.11646/zootaxa.5253.1.1. ISSN 1175-5334. PMID 37044756. 
  3. Roberts, Frederick Hugh Sherston (1970) (in en). Australian Ticks. Melbourne: CSIRO. ISBN 0643004327. 
  4. Barker, Stephen C.; Kelava, Samuel; Mans, Ben J.; Apanaskevich, Dmitry A.; Seeman, Owen D.; Gofton, Alexander; Shao, Renfu; Teo, Ernest J. M. et al. (2024-02-12). "The first cryptic genus of Ixodida, Cryptocroton n. gen. for Amblyomma papuanum Hirst, 1914: a tick of North Queensland, Australia, and Papua New Guinea" (in en). Zootaxa 5410 (1): 91–111. doi:10.11646/zootaxa.5410.1.5. ISSN 1175-5334. https://mapress.com/zt/article/view/zootaxa.5410.1.5. 

Wikidata ☰ Q136366790 entry