Dog follicle mite Demodex canis, copyright Kalumet.

Belongs within: Raphignathina.
Contains: Cheyletidae.

The Cheyletoidea are a group of mites that are commonly parasitic on vertebrates.

See also: Your little friends that are with you always.

Characters (from Walter et al. 2009): Soft bodied but often with weak dorsal shields. Gnathosoma well defined, composed of cheliceral stylophore either free from subcapitulum or fused into gnathosomatic capsule; movable cheliceral digits styliform, needle-like, retractile, approximate terminally; palpi variously developed, often reduced with fused tibiotarsus and femorogenu, or telescoped, sometimes large and armed with a distinctive tibial claw; postcheliceral stigmata and peritremes present in free-living and some parasitic forms but absent in many parasites; with present, peritremes at base of chelicerae or on dorsal surface of gnathosomatic capsule, dorsal cheliceral seta rd absent in larva. Prodorsum lacking anteromedian naso, typically with four pairs of setae, none inserted in bothridia; eyes present or absent. Opisthosoma with 0 to many setae dorsally and laterally, with or without postlarval setal additions or hypertrichy dorsally; cupules (lyrifissures) absent; elements of opisthosomatic segments AD absent. Larval urstigma and postlarval genital papilla absent. Claws always present on tarsi II, and usually on tarsi III-IV unless legs are reduced or absent, claws present or absent on tarsus I; empodia present or absent, often with tenent hairs; genua and tibiae of all legs with a maximum of three setae; solenidion of genu I present or absent. Female genital opening ventral, terminal or dorsal, free from or fused to anal opening; oviporus adjacent to or fused with genital opening. Male with terminal or dorsal genito-anal opening. Usually four active postembryonic instars including larva, two nymphal instars, and adult. Developmental stases may be apodous, or postlarval stases may be hexapod.

Cheyletoidea [Demodicoidea]
    |--Epimyodex WL09 [Epimyodicidae BF01, Epimyodicinae]
    |    `--E. soricis WL09
    |--Cloacaridae BF01
    |    |--Pneumophagus bubonis WP99
    |    |--Caminacarus theodori WL09
    |    |--Theodoracarus testudinis WL09
    |    `--Cloacarus faini WL09
    |--Harpirhynchidae [Ophioptidae] BF01
    |    |--Harpypalpinae WL09
    |    |--Harpyrhynchus [Harpirhynchinae] WL09
    |    |    `--H. novoplumaris WL09
    |    `--Ophioptes [Ophioptinae] WL09
    |         |--O. parkeri WL09
    |         |--O. samboni Southcott 1956 S61
    |         |--O. southcotti WL09
    |         `--O. tropicalis WL09
    |--Psorergatidae BF01
    |    |--Psorergatoides WL09
    |    |--Psorergates WL09
    |    |    |--P. glaucomys WL09
    |    |    `--P. talpae WL09
    |    `--Psorobia WL09
    |         |--P. bos WL09
    |         |--P. foinae WL09
    |         |--P. mustelae WL09
    |         `--P. ovis WL09
    |--+--Cheyletidae BF01
    |  `--Syringophilidae BF01
    |       |  i. s.: Syringophiloides minor WP99
    |       |         Syringophilopsis K09
    |       |         Aulonastus K09
    |       |--Syringophilus SMD01 [Syringophilinae WL09]
    |       |    `--S. bipectinatus Heller 1880 SMD01
    |       `--Picobiinae WL09
    |            |--Calamincola lobatus (Castro 1977) WL09, SMD01
    |            `--Picobia SMD01
    |                 |--P. dryobates (Fritsch 1958) [=Syringophilus dryobates] SMD01
    |                 |--P. khulkhshani (Kivganov & Sharafat 1995) SMD01
    |                 `--P. polonica Skoracki, Magowski & Dabert 2001 SMD01
    `--Demodicidae BF01
         |--Rhinodex Fain 1959 B91
         |--Stomatodex Fain 1959 B91
         |--Pterodex Lukoschus, Woeltjes et al. 1980 B91
         |--Soricidex Bukva 1982 B91
         |--Ophthalmodex Lukoschus & Nutting 1980 B91
         |    `--O. molossi WL09
         `--Demodex Owen 1843 B91
              |--D. acutipes B91
              |--D. antechini N91
              |--D. aurati N91
              |--D. bovis Stiles 1892 B91
              |--D. brevis Akbulatova 1963 B91
              |--D. canis N91
              |--D. caprae N91
              |--D. criceti N91
              |--D. equi B91
              |--D. flagellurus Bukva 1985 B91
              |--D. folliculorum (Simon 1842) B91
              |--D. kutzeri Bukva 1987 B91
              |--D. longissimus WL09
              |--D. nanus Hirst 1918 B91
              |--D. odocoilei N91
              |--D. ovis Hirst 1919 B91
              |--D. rosus Bukva 1985 B91
              |--D. sabani Desch, Lukoschus & Nadchatram 1984 B91
              `--D. tauri Bukva 1986 B91

*Type species of generic name indicated


[BF01] Bochkov, A. V., & A. Fain. 2001. Phylogeny and system of the Cheyletidae (Acari: Prostigmata) with special reference to their host-parasite associations. Bulletin de l’Institut Royal des Sciences Naturelles de Belgique Entomologie 71: 5-36.

[B91] Bukva, V. 1991. Structural reduction and topological retrieval: problems in taxonomy of Demodicidae. 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. 293-300. SPB Academic Publishing: The Hague.

[K09] Krantz, G. W. 2009. Habits and habitats. In: Krantz, G. W. & D. E. Walter (eds) A Manual of Acarology, 3rd ed., pp. 64-82. Texas Tech University Press.

[N91] Nutting, W. B. 1991. Demodecosis, treatment and prevention. 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. 309-317. SPB Academic Publishing: The Hague.

[SMD01] Skoracki, M., W. Magowski & J. Dabert. 2001. Picobia polonica sp. n. (Acari: Prostigmata: Syringophilidae), a new species of quill mite from the domestic hen, Gallus gallus domesticus (Aves: Phasianidae). Folia Parasitologica 48: 154-158.

[S61] Southcott, R. V. 1961. Studies on the systematics and biology of the Erythraeoidea (Acarina), with a critical revision of the genera and subfamilies. Australian Journal of Zoology 9: 367-610.

[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, 3rd ed., 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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