Dorsum (left) and venter of Celaenopsis austriaca, from Evans & Till (1979).

Belongs within: Trigynaspida.

The Celaenopsoidea are a diverse group of mites associated with various arthropods and reptiles. In most families, the dorsum of the deutonymph bears separate podonotal, mesonotal and pygidial shields but the adult has a single holodorsal shield. However, the separate shields are retained to maturity in the Neotropical millipede-associated Neotenogynium malkini. Species of the family Diplogyniidae, which are associated as adults with beetles or snakes, have the anal opening on the large ventral plate and the latigynal plates freely hinged to the ventral plate. Costacarus reyesi and the Triplogyniidae also have free latigynals but the anal opening is on a separate small plate. Other families have the ventral plate fused to the mesogynal shield and at least partially attached to the latigynal plates (Lindquist et al. 2009).

Characters (from Lindquist et al. 2009): Deutonymph with separate podonotal, mesonotal, and pygidial shields; adults usually with holodorsal shield bearing an unpaired median seta at its anterior margin (adults of Neotenogynium retain free shields as in deutonymph). Mesogynal shield small, triangular, and free or amalgamated with latiglynal and/or ventral elements; latigynal shields free or fused to ventral plate; vaginal sclerites well developed. Sternal shield bearing 3–4 setae; free metasternal shield bearing st4 and stp3 often present. Venter covered by single extensive plate, or plate flanked by free lateral and/or anal shields. Palptibia and tarsus distinct, unfused; palpgenu with 5–7 setae; chelicerae with robust, dentate digits, movable digit with large proximal tooth and dendritic or brushlike excrescences. Male genital opening on anterior margin of sternal shield.

    |  i. s.: Celaenosthanus trigonophilusLKW09
    |--Costacarus [Costacaridae]LKW09
    |    `--C. reyesiLKW09
    |--Neotenogynium [Neotenogyniidae]LKW09
    |    `--N. malkiniLKW09
    |    |--Pelorocelaenopsis caminiLKW09
    |    `--Megacelaenopsis Funk 1975FH93
    |         `--M. oudemansi Funk 1975FH93
    |    |--IndogyniumLKW09
    |    |--Schizogynium Trägårdh 1950FH93
    |    |    `--S. megisthanoides (Stoll 1893) [=Celaenopsis megisthanoides]FH93
    |    `--Choriarchus Kinn 1966FH93
    |         `--C. reginus Kinn 1966FH93
    |    |--Funkotriplogynium Datta 1985H98
    |    |    |--F. bengalensisSW97
    |    |    |--F. iagobadius Seeman & Walter 1997H98
    |    |    |--F. irapora (Flechtmann 1983) [=Triplogynium irapora]SW97
    |    |    |--F. ovulumSW97
    |    |    |--F. sisiriSW97
    |    |    `--F. vallei (Fox 1959) [=Neodiplogynium vallei]FH93
    |    `--Triplogynium Funk 1977SW97
    |         |--T. hirtellusSW97
    |         |--T. jeanneliSW97
    |         |--T. krantziLKW09
    |         |--T. ligniphilumSW97
    |         `--T. valleiLKW09
    |    |--Etazercon Berlese 1888FH93
    |    |    `--E. starri Hunter & Rosario 1989FH93
    |    |--Neoeuzercon Funk 1980FH93
    |    |    `--N. diplopodophilus Funk 1980FH93
    |    |--Trinizercon Hunter & Rosario 1989FH93
    |    |    `--T. atyeoi Hunter & Rosario 1989FH93
    |    `--Euzercon Berlese 1888FH93
    |         |--E. balzani Berlese 1888FH93
    |         |--E. latus (Banks 1910) [=Celaenopsis latus]FH93
    |         `--E. ovale Kramer 1927O28
    |    |--Brachycelaenopsis Trägårdh 1951H98
    |    |    `--B. breviatus (Banks 1916) [=Celaenopsis breviatus]H98
    |    |--Pleuronectocelaeno Vitzthum 1926FH93
    |    |    |--*P. austriaca Vitzthum 1926K68
    |    |    |--P. africanaK68
    |    |    |--P. barbara Athias-Henriot 1959 [=P. austriaca barbara]K68
    |    |    |    |--P. b. barbaraK68
    |    |    |    `--P. b. borealis Kinn 1968K68
    |    |    `--P. drymoecetes Kinn 1968FH93
    |    |--Ceratocelaenopsis Trägårdh 1950FH93
    |    |    `--C. womersleyiLKW09
    |    |--Schizocyrtillus Kinn 1970FH93
    |    |    `--S. lathrius Kinn 1970FH93
    |    `--Celaenopsis Berlese 1886FH93 [incl. Antennocelaeno Berl. 1903E57]
    |         |--C. badius (Koch 1839) [=Gamasus badius; incl. G. cuspidatus Kramer 1876, *Celaenopsis cuspidata]ET79
    |         |--C. angustus Banks 1914 [=Cryptometasternum angustum]FH93
    |         |--C. austriacaET79
    |         |--C. canadensis Berlese 1910 [=C. (Anoplocelaeno) canadensis, Diplogynium canadense]FH93
    |         |--C. nitida Banks 1914 [=Meinertula nitida]FH93
    |         |--C. pedalis Banks 1910FH93
    |         `--C. uropodoides Stoll 1893FH93
         |--Ophiocelaeno sellnickiLKW09
         |--Crenamargo Hick 1958FH93
         |    `--C. binuseta Hicks 1958FH93
         |--Lobogyniella Krantz 1958FH93
         |    `--L. tragardhi Krantz 1958FH93
         |--Diplogynium Canestrini 1888 [incl. Anoplocelaeno Berlese 1910]FH93
         |    |--‘Celaenopsis (Anoplocelaeno)’ indica Oudemans 1927O28
         |    |--D. ovatum (Berlese 1888) [=Celaenopsis ovata]FH93
         |    `--‘Celaenopsis (Anoplocelaeno)’ tropica Oudemans 1927O28
         |--Heterodiplogynium Trägårdh 1950FH93
         |    `--H. vestitum Trägårdh 1950FH93
         |--Lobogynioides Trägårdh 1950FH93
         |    `--L. obtusum Trägårdh 1950FH93
         |--Neolobogynium Hicks 1957FH93
         |    `--N. americanum (Banks 1904) [=Celaenopsis americana; incl. N. lateriseta Hicks 1957]FH93
         |--Trichodiplogynium Trägårdh 1950FH93
         |    `--T. hirsutum Trägårdh 1950FH93
         |--Diplogyniella Trägårdh 1950H98
         |    `--D. gayi Womersley 1958H98
         |--Paradiplogynium Womersley 1958H98
         |    `--P. panesthia Womersley 1958H98
         |--Passalacarus Pearse & Wharton 1936H98
         |    |--P. brooksi Womersley 1958H98
         |    `--P. sylvestris Pearse & Wharton in Pearse, Patterson et al. 1936FH93
         |--Tridiplogynium Trägårdh 1950FH93
         |    |--T. inexpectatum Trägårdh 1950FH93
         |    `--T. munizi Machado 1964FH93
         |--Cryptometasternum Trägårdh 950H98
         |    |--C. derricki Womersley 1958H98
         |    `--C. queenslandense Womersley 1958H98
         `--Neodiplogynium Trägårdh 1950F59
              `--*N. schubarti Trägårdh 1950F59

*Type species of generic name indicated


[E57] Evans, G. O. 1957. An introduction to the British Mesostigmata (Acarina) with keys to families and genera. Journal of the Linnean Society of London, Zoology 43: 203–259.

[ET79] Evans, G. O., & W. M. Till. 1979. Mesostigmatic mites of Britain and Ireland (Chelicerata: Acari-Parasitiformes). An introduction to their external morphology and classification. Transactions of the Zoological Society of London 35: 139–270.

[FH93] Farrier, M. H., & M. K. Hennessey. 1993. Soil-inhabiting and free-living Mesostigmata (Acari-Parasitiformes) from North America: an annotated checklist with bibliography and index. North Carolina Agricultural Research Service, North Carolina State University, Technical Bulletin 302: i–xvi, 1–408.

[F59] Fox, I. 1959. A new mite taken with rats in Puerto Rico (Acarina: Diplogyniidae). Acarologia 1 (3): 296–298.

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

[K68] Kinn, D. N. 1968. A new species of Pleuronectocelaeno (Acarina: Celaenopsidae) associated with bark beetles in North and Central America. Acarologia 9 (2): 191–205.

[LKW09] Lindquist, E. E., G. W. Krantz & D. E. Walter. 2009. Order Mesostigmata. In: Krantz, G. W., & D. E. Walter (eds) A Manual of Acarology 3rd ed. pp. 124–232. Texas Tech University Press.

[O28] Oudemans, A. C. 1928. Fauna Buruana. Acari. Treubia 7 (Suppl. 2): 37–100.

[SW97] Seeman, O. D., & D. E. Walter. 1997. A new species of Triplogyniidae (Mesostigmata: Celaenopsoidea) from Australian rainforests. International Journal of Acarology 23 (1): 49–59.

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