Stigmalychus

Endeostigmata

t

Taxonomy

Alicorhagiidae Grandjean, 1939Grandjean, 1939:
Grandjean F. 1939. Quelques genres d’acariens appartenant au groupe des Endeostigmata. Annales des Sciences Naturelles, Zoologie 11 (ser. 2): 1–122.

Name

Stigmalychus Theron, Meyer & Ryke, 1970: 672–675.

Classification

updated 2025

Superorder Acariformes » Order Sarcoptiformes » Suborder Endeostigmata » Infraorder Alicorhagiida » Superfamily Alicorhagioidea » Family Alicorhagiidae » Genus Stigmalychus

Children

Stigmalychus veretrum Theron et al., 1970—pasture soil in South Africa; rainforest soil in Queensland

Diagnosis

Prodorsum with 1 pair of filiform trichobothria (sci) and 5 pairs of setae; naso well developed and bearing setae vi; median and lateral eyes absent. Subcapitulum with 6 pairs of setae; rutella slender, bilobed distally; chelicerae chelate-dentate, each with one seta.  Opisthosomal setal rows C–D–E–F–H–PS–AD–AN with 4–2–2–3–3–3–4–4 pairs of setae, respectively; PA absent; constricted posteriad legs IV.  Genital flaps with 7–10 pairs of setae in 2 rows; 3 pairs of genital papillae in adult. All pretarsi with a simple, claw-like empodium; lateral claws absent. Gut boluses composed of fungal hyphae, spores, and bits of small, soft-bodied invertebrates.

Remarks

Little is known about species in this genus.

Similar taxa

Species of Alicorhagia have dentate rutella, are not constricted behind legs IV, and have only 2 pairs of genital papillae in the adults.

References

  • Evans 1992Evans 1992:
    Evans GO. 1992. Principles of Acarology. CAB International, Wallingford, UK.
  • Grandjean 1939Grandjean 1939:
    Grandjean F. 1939. Quelques genres d’acariens appartenant au groupe des Endeostigmata. Annales des Sciences Naturelles, Zoologie 11 (ser. 2): 1–122.
  • Halliday 1998Halliday 1998:
    Halliday B. 1998. Mites of Australia: A checklist and bibliography. Monographs on Invertebrate Taxonomy, Vol. 5. CSIRO Publishing, Collingwood.
  • Hirst 1923Hirst 1923:
    Hirst S. 1923. On some arachnid remains from the Old Red Sandstone. Annals and Magazine of Natural History (9th series) 12: 455–474.
  • Kethley 1982dKethley 1982d:
    Kethley JB. 1982d. Endeostigmata. pp. 118–120. In: Parker SP, ed. Synopsis and classification of living organisms, Vol. 2. McGraw-Hill, New York.
  • Kethley 1990aKethley 1990a:
    Kethley JB. 1990a. Acarina: Prostigmata (Actinedida). pp. 667–756. In: Dindal DL, ed. Soil biology guide. John Wiley & Sons, Brisbane.
  • Kethley et al. 1989Kethley et al. 1989:
    Kethley JB, Norton RA, Bonamo PM, Shear WA. 1989. A terrestrial alicorhagiid mite (Acari: Acariformes) from the Devonian of New York. Micropaleontology 35: 367–373.
  • Livshits and Mitrofanov 1978aLivshits and Mitrofanov 1978a:
    Livshits IZ, Mitrofanov VI. 1978a. Alicorhagiidae. pp. 97–98. In: Gilyarov MS, ed. Identification key of soil-inhabiting mites, Trombidiformes. Nauka, Moscow.
  • Norton et al. 1993Norton et al. 1993:
    Norton RA, Kethley JB, Johnston DE, O'Connor BM. 1993. Phylogenetic perspectives on genetic systems and reproductive modes of mites. pp. 8–99. In: Wrensch DA, Ebbert MA, eds. Evolution and diversity of sex ratio in insects and mites. Chapman and Hall, New York.
  • OConnor 1984cOConnor 1984c:
    OConnor BM. 1984c. 1. Speciation and evolution in Acari 1.2 Phylogenetic relationships among higher taxa in the Acariformes, with particular reference to the Astigmata. pp. 19–27. In: Griffiths DA and Bowman CE, eds. Acarology VI, Vol. I. Ellis Horwood Ltd, Chichester.
  • Schuster 1979Schuster 1979:
    Schuster R. 1979. Soil mites in the marine environment. pp. 593–602. In: Rodríguez JG, ed. Recent advances in Acarology, Volume 1. Academic Press, New York.
  • Theron 1977Theron 1977:
    Theron PD. 1977. New species of the genus Petralycus Grandjean (Acari: Endeostigmata) from South Africa. Acarologia 19: 38–45.
  • Theron 1979Theron 1979:
    Theron PD. 1979. The functional morphology of the gnathosoma of some liquid and solid feeders in the Trombidiformes, Cryptostigmata and Astigmata (Acarina). pp. 575–579. In: Piffl E, ed. Proceedings of the 4th International Congress of Acarology. Akadémiai Kiadó, Budapest.
  • Theron et al. 1970Theron et al. 1970:
    Theron PD, Meyer MKP, Ryke PAJ. 1970. The family Alicorhagiidae Grandjean (Acari: Trombidiformes) with descriptions of a new genus and species from South African soils. Acarologia 12: 668–676.
  • Thor and Willman 1941Thor and Willman 1941:
    Thor S, Willman C. 1941. Acarina - 71a. Eupodidae, Penthalodidae, Penthaleidae, Rhagidiidae, Pachygnathidae, Cunaxidae. Das Teirreich 71: 1–186.
  • Vazquez 1996Vazquez 1996:
    Vazquez IM. 1996. New species of Nanorchestes (Endeostigmata, Nanorchestidae) from sand beach at La Mancha, Veracruz, Mexico. (Especie nueva de Nanorchestes (Endeostigmata, Nanorchestidae) de arena de playa en La Mancha, Veracruz, Mexico.) Anales Del Instituto De Biologia Universidad Nacional Autonoma De Mexico Serie Zoologia 67 (2): 205–211.
  • Walter 1988cWalter 1988c:
    Walter DE. 1988c. Predation and mycophagy by endeostigmatid mites (Acariformes: Prostigmata). Experimental and Applied Acarology 4: 159–166.
  • Walter 2001Walter 2001:
    Walter DE. 2001. Endemism and cryptogenesis in ‘segmented’ mites: A review of Australian Alicorhagiidae, Terpnacaridae, Oehserchestidae and Grandjeanicidae (Acari, Sarcoptiformes). Australian Journal of Entomology 40: 207–218.
  • Walter and Proctor 1998aWalter and Proctor 1998a:
    Walter DE, Proctor HC. 1998a. Feeding behaviour and phylogeny: Observations on early derivative Acari. Experimental and Applied Acarology 22: 39–50.
  • Walter and Proctor 1999Walter and Proctor 1999:
    Walter DE, Proctor HC. 1999. Mites: Ecology, evolution and behaviour. University of NSW Press, Sydney and CABI, Wallingford. 494 pp.
  • Womersley 1944Womersley 1944:
    Womersley H. 1944. Australian Acarina, families Alycidae and Nanorchestidae. Transactions of the Royal Society of South Australia 68: 133–143.
  • Zacharda 1978Zacharda 1978:
    Zacharda M. 1978. Terrestrial prostigmatic mites from the Amateur’s Cave, the Moravian Kars, Czechoslovakia. Vestnik Ceskoslovnské Spolecnosti Zoologické 42: 215–240.
  • Zakhvatkin 1949Zakhvatkin 1949:
    Zakhvatkin AA. 1949. New representatives of apparently segmented mites (Acarina: Pachygnathidae). Entomologicheskoe Obozrenie 30: 291–297.
Rutella in  Alicorhagia  vs  Stigmalychus  (bilobed)
Rutella in Alicorhagia vs Stigmalychus (bilobed)
 Stigmalychus
Stigmalychus
 Stigmalychus veretrum
Stigmalychus veretrum