Oxidae

Frontipoda sp., copyright Stephen Luk.


Belongs within: Neohydrachnidia.

The Oxidae are a group of water mites found in ponds and lakes; they are more or less compressed laterally and are usually strong swimmers (Walter et al. 2009).

Characters (from Walter et al. 2009): Adults with dorsal shield absent, dorsal integument soft and with or without scattered platelets; insertions of all pairs of legs near anterior end of idiosoma; median coxal suture line usually absent (occasionally present); genital field with movable flaps flanking gonopore. Larvae with cheliceral bases fused; dorsal plate bearing five pairs of setae including verticils, scapulars and setae c1 laterally; integument beneath posterior edge of dorsal plate intricately folded; coxal plates I elongate, extending posteriorly nearly to level of excretory pore plate; coxal plates III bearing two pairs of setae, setae 3a and setae 3b laterally; excretory pore plate bearing only setae ps1 and ps2; legs with five movable segments; leg tarsi bearing paired claws; tibiae I-III bearing eight setae, and two, two and one solenidia respectively; tarsi I-II bearing twelve setae and one solenidion, lacking Ta14.

<==Oxidae
    |--Oxus Kramer 1877 S86
    |    |--O. acutirostris Viets 1937 RFF05
    |    |--O. chilensis Cook 1988 RFF05
    |    |--O. crassipes (Lundblad 1936) RFF05
    |    |--O. elongatus WL09
    |    |--O. gracilipalpis (Lundblad 1941) RFF05
    |    |    |--O. g. gracilipalpis RFF05
    |    |    `--O. g. aequalipilis Viets 1954 RFF05
    |    |--O. halophilus Angelier 1947 S86
    |    |--O. meridianus G01
    |    |--O. orientalis G01
    |    |--O. pictus WL09
    |    |--O. schubarti Viets 1954 RFF05
    |    |--O. troma G01
    |    `--O. valdiviensis Besch 1964 RFF05
    `--Frontipoda Koenike 1891 RFF05
         |  i. s.: F. gredada G01
         |         F. musculus BK91
         |         F. neotasmanica G01
         |         F. setipalpis G01
         |         F. tasmanica G01
         |         F. zunova G01
         |--F. (Frontipoda) RFF05
         |    |--F. (F.) patagonica (Lundblad 1941) RFF05
         |    |--F. (F.) trispinosa Lundblad 1930 RFF05
         |    |--F. (F.) vicina Cook 1988 RFF05
         |    `--F. (F.) cirescens Lundblad 1936 RFF05
         `--F. (Flabellifrontipoda Lundblad 1947) RFF05
              |--F. (F.) allarka (Cook 1988) RFF05
              |--F. (F.) allasa (Cook 1988) RFF05
              |--F. (F.) alta (Cook 1980) RFF05
              |--F. (F.) aphanoraphtha (Besch 1964) RFF05
              |--F. (F.) ciliata Walter 1919 RFF05
              |--F. (F.) dolichopalpis (Cook 1988) RFF05
              |--F. (F.) neotropica (Lundblad 1953) RFF05
              |--F. (F.) parva (Cook 1980) RFF05
              |--‘Flabellifrontipoda’ pectinata G01
              |--F. (F.) penai (Cook 1988) RFF05
              |--F. (F.) polyplacophora (Cook 1980) RFF05
              |--F. (F.) sneiderni (Lundblad 1953) RFF05
              |--F. (F.) tranasa (Cook 1988) RFF05
              `--F. (F.) unoka (Cook 1988) RFF05

*Type species of generic name indicated

REFERENCES

[BK91] Biesiadka, E., & W. Kowalik. 1991. Water mites (Hydracarina) as indicators of trophy and pollution in lakes. In: Dusbábek, F. & V. Bukva (eds) Modern Acarology: Proceedings of the VIII International Congress of Acarology, held in České Budĕjovice, Czechoslovakia, 6–11 August 1990 vol. 1 pp. 475-481. SPB Academic Publishing: The Hague.

[G01] Growns, J. E. 2001. Aquatic mites as bioindicators, with an Australian example. In Acarology: Proceedings of the 10th International Congress (R. B. Halliday, D. E. Walter, H. C. Proctor, R. A. Norton & M. J. Colloff, eds) pp. 136-142. CSIRO Publishing: Melbourne.

[RFF05] Rosso de Ferradás, B. & H. R. Fernández. 2005. Elenco y biogeografía de los ácaros acuáticos (Acari, Parasitengona, Hydrachnidia) de Sudamérica. Graellsia 61 (2): 181-224.

[S86] Schwoerbel, J. 1986. Acari: “Hydrachnellae”. In Stygofauna Mundi: A Faunistic, Distributional, and Ecological Synthesis of the World Fauna inhabiting Subterranean Waters (including the Marine Interstitial) (L. Botosaneanu, ed.) pp. 652-696. E. J. Brill / Dr. W. Backhuys: Leiden.

[WL09] Walter, D. E., E. E. Lindquist, I. M. Smith, D. R. Cook & G. W. Krantz. 2009. Order Trombidiformes. In: Krantz, G. W. & D. E. Walter (eds) A Manual of Acarology, pp. 233-420. Texas Tech University Press.

No comments:

Post a Comment

Markup Key:
- <b>bold</b> = bold
- <i>italic</i> = italic
- <a href="http://www.fieldofscience.com/">FoS</a> = FoS