Abrolophus

 Adult Abrolophus, photographed by Tom Murray.

Belongs within: Callidosomatinae.

Abrolophus is a genus of mites found worldwide; adults are distinguished from other callidosomatines by the lack of enlarged segments or modifications of the legs and palps. Abrolophus has often been confused with the balaustiine genus Balaustium, which differs in the presence of specialised urnulae (sensory pits) on the idiosoma. It has been suggested that the larval genus Hauptmannia represents the larva of Abrolophus but the association is uncertain (Southcott 1961).

Characters (from Southcott 1961): Adult and nymph with one eye on each side, behind the middle of the crista. Crista normal. No specialized sensory pits (urnulae) present on dorsum of idiosoma. No tubercles on tibiae of legs. Legs and palpi normal, without any unusually enlarged segments. Palpal tarsus normal, rather small, not or only slightly overreaching palpal tibial claw.

<==Abrolophus Berlese 1891G91 [incl. Discolophus Kishida 1939S61, Legneria Oudemans 1941S61; Discolopheae]
    |--*A. quisquiliarum (Hermann 1804)L90 (see below for synonymy)
    |--‘Erythraeus’ arvensis Banks 1912 [=*Legneria arvensis]S61
    |--A. araneipesWWO01
    |--A. brevicollisW01
    |--A. brevum (Womersley 1934)H01 [=Belaustium brevumH98, Balaustium brevumH01]
    |--‘Achorolophus’ epigaeusS61
    |--‘Achorolophus’ falconerii Hull 1918 [=Leptus falconeri]S61
    |--A. frisius Southcott 1961 [=Balaustium insulare Willmann 1952 non Womersley 1934]S61
    |--A. glauerti (Womersley 1934)H01 [=Belaustium glauertiH98, Balaustium glauertiH01]
    |--A. halberti (Cooreman 1946) [=Balaustium halberti]S61
    |--A. insularis (Womersley 1934)S61 [=Belaustium insularumW34]
    |--A. littorale (Womersley 1934)H01 [=Belaustium littoraleH98, Balaustium littoraleH01]
    |--A. longicollisW01
    |--‘Ritteria’ mantonensis [incl. Achorolophus norvegicus]S61
    |--A. medicagoensis Meyer & Ryke 1959G91
    |--A. newmani (Womersley 1934)H01 [=Belaustium newmaniH98, Balaustium newmaniH01]
    |--A. passeriniiK09
    |--A. raripapillum Schweizer 1951S61
    |--A. rhopalicusS61
    |--A. ripicola (Womersley 1934)H01 [=Belaustium ripicolaH98, Balaustium ripicolaH01]
    |--A. rubipes (Trouessart 1888)WWO01, S61 [=Rhyncholophus rubipesS61, Balaustium rubripes (l. c.)S61, R. rubripes (l. c.)S61]
    |--A. rudaensisW01
    |--A. schweizeri (Evans 1952) (see below for synonymy)S61
    |--*Discolophus’ tokunagai Kishida 1939S61
    `--A. zelandicus Luxton 1989L90

*Abrolophus quisquiliarum (Hermann 1804)L90 [=Trombidium quisquiliarumSB63, Balaustium quisquiliarumL90, Erythraeus quisquiliarumS61, Rhyncholophus quisquiliarumS61]

Abrolophus schweizeri (Evans 1952) [=Balaustium schweizeri, B. sabulosum Schweizer 1951 non Rhyncholophus sabulosus Halbert 1915]S61

*Type species of generic name indicated

References

[G91] Gabryś, G. 1991. Intergeneric relationships within Erythraeidae (Acari, Actinedida). 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. 207–212. SPB Academic Publishing: The Hague.

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

[H01] Halliday, R. B. 2001. Systematics and biology of the Australian species of Balaustium von Heyden (Acari: Erythraeidae). Australian Journal of Entomology 40: 326–330.

[K09] Krantz, G. W. 2009. Form and function. In: Krantz, G. W., & D. E. Walter (eds) A Manual of Acarology 3rd ed. pp. 5–53. Texas Tech University Press.

[L90] Luxton, M. 1990. The marine littoral mites of the New Zealand region. Journal of the Royal Society of New Zealand 20 (4): 367–418.

[SB63] Schweizer, J., & C. Bader. 1963. Die Landmilben der Schweiz (Mittelland, Jura und Alpen): Trombidiformes Reuter, mit 217 Arten und Unterarten und 193 Originalzeichnungen. Denkschriften der Schweizerischen Naturforschenden Gesellschaft [Mémoires de la Société Helvétique des Sciences Naturelles] 84 (2): i–vi, 209–378.

[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.

[W01] Wohltmann, A. 2001. Closely related species of Parasitengonae (Acari: Prostigmata) inhabiting the same areas: features facilitating coexistence. 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. 121–135. CSIRO Publishing: Melbourne.

[WWO01] Wohltmann, A., H. Witte & R. Olomski. 2001. Organismal patterns causing high potential for adaptive radiation in Parasitengonae (Acari: Prostigmata). 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. 83–99. CSIRO Publishing: Melbourne.

[W34] Womersley, H. 1934. A revision of the trombid and erythraeid mites of Australia with descriptions of new genera and species. Records of the South Australian Museum 5 (2): 179–254.

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