Trombidiformes on:
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The Trombidiformes are a large, diverse
* '' Alycus''
* '' Bdellodes''
* '' Eupodes''
order
Order, ORDER or Orders may refer to:
* Categorization, the process in which ideas and objects are recognized, differentiated, and understood
* Heterarchy, a system of organization wherein the elements have the potential to be ranked a number of ...
of mite
Mites are small arachnids (eight-legged arthropods). Mites span two large orders of arachnids, the Acariformes and the Parasitiformes, which were historically grouped together in the subclass Acari, but genetic analysis does not show clear e ...
s.
Taxonomy
In 1998, Trombidiformes was divided into the Sphaerolichida and the Prostigmata. The group has few synapomorphies by which it can be defined, unlike the other major group of acariform mites,Sarcoptiformes
The Sarcoptiformes are an order of Acari comprising over 15,000 described species in around 230 families. Previously it was divided into two suborders, Oribatida and Astigmatina, but Oribatida has been promoted to an order, and Astigmatina is ...
. Its members include medically important mites (such as '' Demodex'', the chiggers, and scrub-itch mites) and many agriculturally important species, including the spider mites (Tetranychidae). The superfamily Eriophyoidea, traditionally considered members of the Trombidiformes, have been found to be basal mites in genomic analyses, sister to the clade containing Sarcoptiformes and Trombidiformes.
The 2004 classification retained the two suborders, comprising around 125 families and more than 22,000 described species.
In the 2011 revised classification, the order now contains 151 families, 2235 genera
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclat ...
and 25,821 species, and there were another 10 species with 24 species that present only as fossils. These 151 families were classified into the same two major suborders：
* Sphaerolichida OConnor, 1984: Now contains only two superfamilies;
* Prostigmata Kramer, 1877: Still the biggest branch in this taxon, with four infraorders and 40 superfamilies.
See also
* '' Alycus''
* '' Bdellodes''
* '' Eupodes''
References
External links
* * {{Taxonbar, from=Q686325 Arachnid orders