Eutrombidium sp., copyright Roman.

Belongs within: Microtrombidiidae.

Eutrombidium is a widespread genus of parasitengonine mites recorded from Eurasia, North America and Australia (Walter et al. 2009).

Characters (from Schweizer & Bader 1963): Adult with crista enlarged at midpoint around fine, hair-like sensilla; two eyes on each side, raised only slightly above the body surface on small basal plates; small, pointed naso present anterior to crista; idiosoma wide anteriorly, forming "shoulders", tapered posteriorly with well-developed, oval opisthosomal plate; plumose idiosomal hairs all alike; palps strong, tibia with lateral claws and strong spines, tarsus long; legs densely hairy.

<==Eutrombidium Verdun 1909 WY88
    |--*E. trigonum (Hermann 1804) WY88 (see below for synonymy)
    |--E. australiense Southcott 1993 H98
    |--E. canestrinii SB63
    |    |--E. c. canestrinii SB63
    |    `--E. c. minor Schweizer 1951 SB63
    |--E. frigidum Berlese 1910 SB63
    |    |--E. f. frigidum SB63
    |    `--E. f. quadrispinum Schweizer 1951 SB63
    |--E. lebaroni WL09
    |--E. lockleii Welbourn & Young 1988 WY88
    |--E. locustarum WY88
    |--E. magnum WY88
    |--E. orientale WL09
    `--E. trombidioides [=Ottonia trombidioides] WY88

*Eutrombidium trigonum (Hermann 1804) WY88 [=Trombidium trigonum WY88, Ottonia trigona K01; incl. Pediculus rostratus Scopoli 1763 SB63]

*Type species of generic name indicated


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

[K01] Kulczyński, V. 1901. Arachnoideák [Arachnoidea]. In: Horváth, G. (ed.) Zichy Jenő Gróf Harmadik Ázsiai Utazása [Dritte Asiatische Forschungsreise des Grafen Eugen Zichy] vol. 2. Zichy Jenő Gróf Harmadik Ázsiai Utazásának Állattani Eredményei [Zoologische Ergebnisse der Dritten Asiatischen Forschungsreise des Grafen Eugen Zichy] pp. 311–369. Victor Hornyánszky: Budapest, and Karl W. Hierseman: Leipzig.

[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.

[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.

[WY88] Welbourn, W. C., & O. P. Young. 1988. Mites parasitic on spiders, with a description of a new species of Eutrombidium (Acari, Eutrombidiidae). Journal of Arachnology 16: 373–385.

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