Acaroidea

 Female fish mite Lardoglyphus konoi, from here.

Belongs within: Astigmatina.
Contains: Acaridae.

The Acaroidea are a group of mites commonly associated with nests of vertebrates or Hymenoptera though members of the family Acaridae have become more diverse in habits. Females of the Acaroidea have a strongly folded pseudovipositor that they use in egg deposition (OConnor 2009).

Species of Lardoglyphus are best known as pests of stored meat products and seafood (OConnor 2009).

Characters (from OConnor 2009): Adults with gnathosoma normally formed; chelicerae chelate-dentate. Subcapitulum and palpi normally formed. Idiosoma with cuticle smooth, mammillate, tuberculate, rarely entirely sclerotised. Propodosomatic sclerotisation typically shield-like, rarely in form of two parallel sclerites, occasionally absent. Sejugal furrow usually present, sometimes absent. Dorsal and paraproctal chaetome complete or strongly reduced. Coxisternal skeleton normally developed with addition of paired apodematic elements in ventral sejugal region; chaetome ancestrally complete. Female oviporus in form of inverted V; internally with strongly folded pseudovipositor; epigynal apodeme rarely apparent. Male normally with paranal suckers, occasionally reduced or absent; modified, sucker-like setae on tarsus IV; sometimes with legs III variously enlarged, or rarely legs I enlarged. Mating position reversed. Legs normally developed; chaetome complete to strongly reversed. Pretarsi with or without membranous ambulacrum, empodial claws usually present, rarely absent. Deutonymphs (where known) with gnathosomatic remnant variously developed or absent; idiosoma typically ovoid to rounded in outline, usually well sclerotised, smooth or with pattern of striations or punctations dorsally; propodosomatic ocelli rarely present (some Acaridae); sejugal furrow always present; coxisternal skeleton normally developed or strongly reduced and without posterior median apodeme, chaetome ancestrally complete or some or all coxal setae absent; attachment organ well developed, with all structures present; legs normally developed, or legs IV reduced and lacking pretarsus, chaetome complete or some setae absent; pretarsi with or without membranous ambulacrum; empodial claws normally present, occasionally absent (some Suidasiidae).

<==Acaroidea
    |  i. s.: ScatoglyphusO01 [ScatoglyphidaeO09]
    |           `--S. polytrematusO09
    |         ChetochelacaridaeO09
    |           |--Diplopodocoptes transkeiensisO09
    |           `--Chetochelacarus mamillatusO09
    |--Lardoglyphus Oudemans 1927H98 [LardoglyphidaeO01]
    |    |--L. falconidusO09
    |    |--L. konoi (Sasa & Asanuma 1951)OM91 [=Hoshikadania konoiH98]
    |    `--L. zacheri Oudemans 1927H98
    |--+--AcaridaeO01
    |  `--Glycacarus [Glycacaridae]O01
    |       `--G. combinatusO01
    |--Gaudiellidae [Partamonacoptidae, Platyglyphidae]O01
    |    |--Platyglyphus malayanusO09
    |    |--Cerophagus nearcticusO09
    |    |--PartamonacoptesO09
    |    `--Gaudiella [incl. Trigonacoptes]O09
    |         `--G. minutaO09
    `--Suidasiidae [Sapracaridae, Suidasinae]O01
         |--Sapracarus tuberculatusO01, O09
         |--NamibacarusO01
         |--NeosuidasiaO09
         |--SinosuidasiaO09
         |--Tortonia Oudemans 1911H98
         |    |--T. australiensis (Fain & Philips 1978) [=Suidasia australiensis]H98
         |    `--T. quadridensO09
         `--Suidasia Oudemans 1905H98
              |--S. nesbitti Hughes 1948H98
              `--S. pontifica Oudemans 1905 (see below for synonymy)O09

Suidasia pontifica Oudemans 1905 [incl. Aphelinia medanensis Oudemans 1923 (n. n.), S. medanensis Oudemans 1924]O09

*Type species of generic name indicated

References

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

[O01] OConnor, B. M. 2001. Historical ecology of the Acaridae (Acari): phylogenetic evidence for host and habitat shifts. In: Halliday, R. B., D. E. Walter, H. C. Proctor, R. A. Norton & M. J. Colloff (eds) Acarology: Proceedings of the 10th International Congress pp. 76–82. CSIRO Publishing: Melbourne.

[O09] OConnor, B. M. 2009. Cohort Astigmatina. In: Krantz, G. W., & D. E. Walter (eds) A Manual of Acarology 3rd ed. pp. 565–657. Texas Tech University Press.

[OM91] Okamoto, M., & K. Matsumoto. 1991. Observations on the behavior of the hypopus of Lardoglyphus konoi. 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. 2 pp. 555–559. SPB Academic Publishing: The Hague.

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