Sellnickochthonius sp., copyright Zoë Lindo.

Belongs within: Acariformes.

Sellnickochthonius is a cosmopolitan genus of brachychthoniid mites with three pairs of suprapleural plates present. A number of species in the genus are known from seemingly disjunct distributions, such as S. suecicus found in the Holarctic region and Australasia (Subías 2004).

Characters (from Balogh & Balogh 1992): Notogaster with two transverse sutures and three shields, no setae arising within sutures; shield Na bearing two rows of setae (c and d); fields of shield Na differentiated into anterior and posterior group, often paired in median line; seta d2 in marginal position, aligned with longitudinal row of setae cp-e2. Pleural region with three pairs of suprapleural plates (SpC, SpE and SpF). Two pairs of adanal setae (ad2 and ad3) widened, blade-like. Peranal plate present.

<==Sellnickochthonius Krivolutsky 1964 S04
    |--*S. zelawaiensis (Sellnick 1928) S04 (see below for synonymy)
    |--S. americanus (MacQuilty 1986) [=Brachychochthonius americanus] S04
    |--S. anonymus Ruiz, Subías & Kahwash 1991 S04
    |--S. aokii (Chinone 1974) [=Brachychthonius aokii] S04
    |--S. borealis (Krivolutsky 1965) [=Brachychthonius borealis] s04
    |--S. comorensis Mahunka 1995 S04
    |--S. cricoides (Weis-Fogh 1948) [=Brachychthonius (Brachychochthonius) cricoides] S04
    |--S. danubialis Mahunka 1997 S04
    |--S. dolosus Gil-Martín, Subías & Arillo 1992 S04
    |--S. elisabethae Mahunka 1974 S04
    |--S. elsosneadensis (Hammer 1958) S04 (see below for synonymy)
    |--S. foliatifer Mahunka 1982 S04
    |--S. foliatus (Hammer 1958) [=Brachychochthonius foliatus] S04
    |--S. formosus (Cooreman 1947) [=Eobrachychthonius formosus] S04
    |--S. fuentesi Ruiz, Subías & Kahwash 1991 S04
    |--S. furcatus (Weis-Fogh 1948) [=Brachychthonius (Brachychochthonius) furcatus] S04
    |--S. gracilis (Chinone 1974) [=Brachychthonius gracilis] S04
    |--S. griseus (Hammer 1958) [=Brachychochthonius griseus] S04
    |--S. guanophilus (Mahunka 1979) [=Brachychochthonius guanophilus] S04
    |--S. hanyensis Mahunka & Mahunka-Papp 2002 S04
    |--S. heterotrichus (Balogh 1963) [=Brachychthonius heterotrichus] S04
    |--S. honestus (Moritz 1976) [=Brachychochthonius honestus] S04
    |--S. hungaricus (Balogh 1943) [=Poecilochthonius hungaricus] S04
    |--S. immaculatus (Forsslund 1942) (see below for synonymy) S04
    |--S. jacoti (Evans 1952) [=Brachychthonius jacoti] S04
    |--S. japonicus (Chinone 1974) [=Brachychthonius japonicus] S04
    |--S. lydiae (Jacot 1938) [=Brachychochthonius lydiae; incl. Brachychthonius hammerae Chinone & Aoki 1972] S04
    |--S. maroccanus (Mahunka 1980) [=Brachychochthonius maroccanus] S04
    |--S. meridionalis (Bernini 1973) [=Brachychochthonius meridionalis] S04
    |--S. miyauchii (Chinone 1978) [=Brachychochthonius miyauchii] S04
    |--S. monticola (Hammer 1961) [=Brachychthonius monticola] S04
    |--S. muara Mahunka 1995 S04
    |--S. niliacus (Al-Assiuty, Bayoumi & Abdel-Hamid 1984) [=Brachychochthonius niliacus] S04
    |--S. novazealandicus (Hammer 1966) [=Brachychthonius novazealandicus] S04
    |--S. oesziae (Balogh & Mahunka 1979) [=Brachychthonius oesziae] S04
    |--S. paraplanus (Niedbała 1982) [=Brachychochthonius paraplanus] S04
    |--S. phyllophorus (Moritz 1976) [=Brachychochthonius phyllophorus] S04
    |--S. planus (Chinone 1974) [=Brachychthonius planus] S04
    |--S. plumosus Subías & Gil-Martín 1991 S04
    |--S. rostratus (Jacot 1936) [=Brachychthonius rostratus] S04
    |--S. rotundatus (Hammer 1958) [=Brachychochthonius rotundatus] S04
    |--S. similis (Hammer 1961) [=Brachychthonius similis] S04
    |--S. suecicus (Forsslund 1942) [=Brachychochthonius jugatus suecicus] S04
    |--S. tropicus (Hammer 1958) [=Brachychthonius tropicus] S04
    `--S. variabilis (Mahunka 1982) [=Brachychochthonius variabilis] S04

Sellnickochthonius elsosneadensis (Hammer 1958) S04 [=Brachychochthonius elsosneadensis S04, Brachychthonius elsosneadensis CH98, Brachychthonius elsosneudensis (l. c.) H98]

Sellnickochthonius immaculatus (Forsslund 1942) [=Brachychochthonius immaculatus; incl. Brachychochthonius arcticus Hammer 1952, Brachychochthonius berlesei erosus Jacot 1938, Brachychthonius gygeri Bader 1963, Brachychthonius obscurus Krivolutsky 1966, Brachychthonius seminornatus Evans 1952, Brachychthonius striatus Willmann 1956] S04

*Sellnickochthonius zelawaiensis (Sellnick 1928) S04 [=Brachychthonius zelawaiensis S04, Brachychochthonius zelawaiensis W91]

*Type species of generic name indicated


Balogh, J., & P. Balogh. 1992. The Oribatid Mites Genera of the World vol. 1. Hungarian Natural History Museum: Budapest.

[CH98] Colloff, M. J., & R. B. Halliday. 1998. Oribatid Mites: A catalogue of Australian genera and species. CSIRO Publishing: Collingwood.

[H98] Halliday, R. B. 1998. Mites of Australia: A checklist and bibliography. CSIRO Publishing: Collingwood.

[S04] Subías, L. S. 2004. Listado sistemático, sinonímico y biogeográfico de los ácaros oribátidos (Acariformes, Oribatida) del mundo (1758–2002). Graellsia 60 (número extraordinario): 3–305.

[W91] Weigmann, G. 1991. Oribatid communities in transects from bogs to forests in Berlin indicating the biotopes qualities. 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. 359–364. SPB Academic Publishing: The Hague.

Last updated: 18 January 2019.

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