Riscus

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Skvarla M, Fisher J, Dowling A (2014) A review of Cunaxidae (Acariformes, Trombidiformes): Histories and diagnoses of subfamilies and genera, keys to world species, and some new locality records. ZooKeys 418 : 1–103, doi. Versioned wiki page: 2014-06-20, version 53355, https://species-id.net/w/index.php?title=Riscus&oldid=53355 , contributors (alphabetical order): Pensoft Publishers.

Citation formats to copy and paste

BibTeX:

@article{Skvarla2014ZooKeys418,
author = {Skvarla, Michael J., Fisher, J. Ray AND Dowling, Ashley P. G.},
journal = {ZooKeys},
publisher = {Pensoft Publishers},
title = {A review of Cunaxidae (Acariformes, Trombidiformes): Histories and diagnoses of subfamilies and genera, keys to world species, and some new locality records},
year = {2014},
volume = {418},
issue = {},
pages = {1--103},
doi = {10.3897/zookeys.418.7629},
url = {http://www.pensoft.net/journals/zookeys/article/7629/abstract},
note = {Versioned wiki page: 2014-06-20, version 53355, https://species-id.net/w/index.php?title=Riscus&oldid=53355 , contributors (alphabetical order): Pensoft Publishers.}

}

RIS/ Endnote:

TY - JOUR
T1 - A review of Cunaxidae (Acariformes, Trombidiformes): Histories and diagnoses of subfamilies and genera, keys to world species, and some new locality records
A1 - Skvarla M, Fisher J
A1 - Dowling A
Y1 - 2014
JF - ZooKeys
JA -
VL - 418
IS -
UR - http://dx.doi.org/10.3897/zookeys.418.7629
SP - 1
EP - 103
PB - Pensoft Publishers
M1 - Versioned wiki page: 2014-06-20, version 53355, https://species-id.net/w/index.php?title=Riscus&oldid=53355 , contributors (alphabetical order): Pensoft Publishers.

M3 - doi:10.3897/zookeys.418.7629

Wikipedia/ Citizendium:

<ref name="Skvarla2014ZooKeys418">{{Citation
| author = Skvarla M, Fisher J, Dowling A
| title = A review of Cunaxidae (Acariformes, Trombidiformes): Histories and diagnoses of subfamilies and genera, keys to world species, and some new locality records
| journal = ZooKeys
| year = 2014
| volume = 418
| issue =
| pages = 1--103
| pmid =
| publisher = Pensoft Publishers
| doi = 10.3897/zookeys.418.7629
| url = http://www.pensoft.net/journals/zookeys/article/7629/abstract
| pmc =
| accessdate = 2020-11-26

}} Versioned wiki page: 2014-06-20, version 53355, https://species-id.net/w/index.php?title=Riscus&oldid=53355 , contributors (alphabetical order): Pensoft Publishers.</ref>

See also the citation download page at the journal.


Taxonavigation

Ordo: Trombidiformes
Familia: Cunaxidae

Name

Riscus Den Heyer, 2006Wikispecies linkPensoft Profile

Historical review

Gupta and Ghosh (1980)[1] described Cunaxa bambusae, Cunaxa cynodonae Den Heyer (2006)[2] erected Riscus for Riscus thailandensis. Den Heyer (2011) transferred Cunaxa bambusae and Cunaxa cynodonae to Riscus based on the redescriptions by Corpuz-Raros (2008)[3]. Den Heyer and Castro (2012)[4] described Riscus austroamericanus.

Diagnosis

Gnathosoma. Pedipalps 5-segmented, extend beyond the subcapitulum by at least the last segment, and end in a strong claw; apophysis absent. Basifemora and telofemora complemented with simple setae; these two segments fused, although a line remains visible and they can thus be differentiated. Subcapitulum complemented with 6 pairs of setae (hg1–4 and 2 pairs of adoral setae). Setae hg3 and hg4 both near the coxal bases of the pedipalps.
Idiosoma, dorsal. Female dorsal idiosoma has a sclerotized plate that bears 2 pairs of setose sensillae (at and pt) and 2 pairs of simple setae (lps and mps). Idiosomal shield covered by integumental papillae that form a reticulated pattern. Hysterosoma lacks a plate and bears 7 pairs of setae (c1–2, d1–h1). Cupule im present, usually laterad or in the proximity of e1.
Idiosoma, ventral. Coxae ill-defined. Coxae I and II fused; coxae III and IV fused. Coxae I–IV setal formula 3-1-3-1 (including paracoxal seta). Genital plates each bear 4 setae. Anal plates bear 1 pair of setae (ps1). 2 pairs of setae (ps2 and h2) associated with, but do not occur on, the anal plates. Cupule ih present in close proximity to h2. Integument between plates striated and bears 5 pairs of additional setae. Legs. Ambulacral claws on either side of a 4-rayed empodium present.

Key to adult female Riscus

(modified from Den Heyer and Castro 2012[4])


Taxon Treatment

  • Skvarla, M; Fisher, J; Dowling, A; 2014: A review of Cunaxidae (Acariformes, Trombidiformes): Histories and diagnoses of subfamilies and genera, keys to world species, and some new locality records ZooKeys, 418: 1-103. doi


Other References

  1. Gupta S, Ghosh S (1980) Some prostigmatid mites (Acarina) from Andaman and Nicobar Islands. Records of the Zoological Survey of India 77: 189–213.
  2. Den Heyer J (2006) Riscus, a new cunaxid genus from Thailand (Acari: Actinedida: Cunaxidae). Acarologia 46(3–4): 195–201.
  3. Corpuz-Raros L (2008) Additional species of Cunaxidae and first report of the subfamily Neobonzinae (Cunaxidae, Acari) from the Philippines. Asia Life Sciences 17(1): 71–89.
  4. 4.0 4.1 Den Heyer J, Castro T (2012) New Neotropical cunaxinae species (Acari: Prostigmata: Cunaxidae). Zootaxa 3265: 22–42.