Arrenuridae

Diagnostic drawings of Arrenurus (Arrhenuropsides) parviscutatus, from Rosso de Ferradás 2006. Figs 1-3: female (fig. 3: palp); figs 4-5: male.


Belongs within: Neohydrachnidia.
Contains: Arrenurus (Arrenurus), Arrenurus (Megaluracarus), Arrenurus (Truncaturus).

The Arrenuridae are a diverse family of water mites, most species of which are classified in the genus Arrenurus. Adults of this genus are strongly sclerotised, often strong swimmers, and commonly predators of ostracods (Walter et al. 2009).

Characters (from Walter et al. 2009): Adults with dorsal and ventral shields present; palpi usually uncate (except in Micruracaropsis); genital acetabula numerous, lying on acetabular plates extending laterally from gonopore, none in gonopore (except one in male of Thoracaphoracarus); idiosoma of female relatively unmodified, but posterior end of idiosoma in males moderately to extremely modified. Larvae with idiosoma moderately flattened dorsoventrally; gnathosoma projecting beyond anterior edge of dorsal plate, entirely exposed in dorsal view; dorsal plate bearing five pairs of setae, including verticils, scapulars, and setae c1 laterally; setae c2 and d2 similar to other hysterosomatic setae; excretory pore setae ps1 and ps2 present on plate; legs with five movable segments; leg genua with setae Ge5 borne on tubercles; tibia I bearing seven setae (and two solenidia), lacking Ti11; leg tarsi bearing setae Ta14; tarsus II-III with setae Ta4 and Ta6 long (usually as long as respective segments); tarsus III bearing at least eleven setae, including Ta12.

<==Arrenuridae
    |--Wuria WP99
    |--Micruracaropsis Viets 1939 RFF05
    |    `--M. phytotelmaticola (Viets 1939) RFF05
    |--Thoracaphoracarus Viets 1914 RFF05
    |    |--T. (Thoracaphoracarus) simplex Cook 1988 RFF05
    |    `--T. (Xenthoracaphorus Cook 1988) RFF05
    |         `--T. (X.) chilensis Cook 1988 RFF05
    `--Arrenurus Dugès 1834 [Arrenurinae] S86
         |  i. s.: A. acutidentatus Viets 1959 RFF05
         |         A. acutiepimeratus Viets 1954 RFF05
         |         A. albator (O.F.M. 1776) GS91
         |         A. amplipenicillatus Viets 1954 RFF05
         |         A. anisitsi Daday 1905 RFF05
         |         A. apertus Daday 1905 RFF05
         |         A. biscissus BK91
         |         A. boettgeri Viets 1968 RFF05
         |         A. caquetiorum Rosso de Ferradás & Fernández 2001 RFF05
         |         A. ceylonicus WL09
         |         A. claviger BK91
         |         A. cometes Lundblad 1937 RFF05
         |         A. confertus Viets 1954 RFF05
         |         A. coronator BK91
         |         A. crassicaudatus Kramer 1875 PH91
         |         A. cuspidator WP99
         |         A. cylindratus CS91
         |         A. dentipalpis Lundblad 1936 RFF05
         |         A. dinotoformis WL09
         |         A. fissicornis WP99
         |         A. forpicatus BK91
         |         A. globator BK91
         |         A. hirsutipalpis Walter 1919 RFF05
         |         A. honoratus Thor 1911 RFF05
         |         A. kitchingi WP99
         |         A. longicaudatus WL09
         |         A. membranator Thor 1901 GS91
         |         A. multangulus Daday 1905 RFF05
         |         A. multipapillatus Viets 1954 RFF05
         |         A. munovus WL09
         |         A. neumani BK91
         |         A. nobilis BK91
         |         A. ovum Viets 1954 RFF05
         |         A. papilliger Viets 1959 RFF05
         |         A. pennapodus Rosso de Ferradáas 1989 RFF05
         |         A. perforatus (George 1881) PH91
         |         A. promacrus Lundblad 1936 RFF05
         |         A. propinquus Daday 1905 RFF05
         |         A. pseudotenuicollis Wilson 1961 D91
         |         A. pustulator BK91
         |         A. quadrisetosus Viets 1954 RFF05
         |         A. securiformis BK91
         |         A. subarcticus BK91
         |         A. tetracyphus BK91
         |         A. tortus Viets 1954 RFF05
         |         A. tumulosus Viets 1954 RFF05
         |           |--A. t. tumulosus RFF05
         |           `--A. t. intercursor Viets 1954 RFF05
         |         A. uberifer Viets 1954 RFF05
         |--A. (Arrenurus) PW01
         |--A. (Arrhenuropsides Viets 1954) RFF05
         |    |--A. (A.) parviscutatus (Viets 1954) RFF05
         |    `--A. (A.) rionegrensis Rosso de Ferradás 1978 RFF05
         |--A. (Arrhenuropsis Viets 1954) RFF05
         |    |--A. (A.) clavilaminata (Viets 1954) RFF05
         |    `--A. (A.) curvipalpis (Viets 1954) RFF05
         |--A. (Brevicaudaturus Smit 1998) RFF05
         |    |--A. (B.) imperator Lundblad 1944 RFF05
         |    |    |--A. i. imperator RFF05
         |    |    `--A. i. goliath Lundblad 1953 RFF05
         |    `--A. toriger Viets 1940 RFF05
         |--A. (Dadayella Koenike 1907) RFF05
         |    |--A. (D.) clavipes (Lundblad 1938) RFF05
         |    |--A. (D.) guarani Rosso de Ferradás 2005 [=A. (D.) boettgeri Viets & Böttger 1986 non Viets 1968] RFF05
         |    |--A. (D.) guttifera (Viets 1954) RFF05
         |    |--A. (D.) hirtipalpis (Besseling 1949) RFF05
         |    |--A. (D.) minima (Daday 1905) RFF05
         |    |--A. (D.) projecta (Lundblad 1938) RFF05
         |    |--A. (D.) rotunda (Daday 1905) RFF05
         |    |    |--A. r. rotunda RFF05
         |    |    `--A. r. subrotundata (Viets 1954) RFF05
         |    `--A. (D.) walteri (Lundblad 1953) RFF05
         |--A. (Megaluracarus) RFF05
         |--A. (Stygarrenurus Cook 1980) S86
         |    `--A. (S.) golfitensis Cook 1980 S86
         `--A. (Truncaturus) S86

*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.

[CS91] Cicolani, B., & A. Di Sabatino. 1991. Sensitivity of water mites to water pollution. 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. 465-474. SPB Academic Publishing: The Hague.

[D91] Davids, C. 1991. Water mites: the impact of larvae and adults on their host and prey populations. 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. 497-501. SPB Academic Publishing: The Hague.

[GS91] Gerecke, R., & J. Schwoerbel. 1991. Water quality and water mites (Acari, Actinedida) in the Upper Danube region, 1959-1984. 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. 483-491. SPB Academic Publishing: The Hague.

[PW01] Proctor, H., & K. Wilkinson. 2001. Coercion and deceit: Water mites (Acari: Hydracarina) and the study of intersexual conflict. 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. 155-169. CSIRO Publishing: Melbourne.

[PH91] Punčochár, P., & J. Hrbáček. 1991. Water mites in the plankton of Hubenov Reservoir and their relations to fish stock composition. 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. 449-457. SPB Academic Publishing: The Hague.

[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.

[WP99] Walter, D. E. & H. C. Proctor. 1999. Mites: Ecology, Evolution and Behaviour. CABI Publishing: Wallingford (UK).

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