Trombidiidae

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Trombidiidae, also known as red velvet mites, true velvet mites,[1] or rain bugs, are small arachnids (eight-legged arthropods) found in plant litter and are known for their bright red color.

While adults are typically no more than Template:Cvt in length, some species can grow larger and the largest, including the African Dinothrombium tinctorum and Indian Trombidium grandissimum, may exceed Template:Cvt.[1][2][3] This also makes them the largest mites, if disregarding ticks engorged after feeding;[4] unlike those, D. tinctorum and T. grandissimum are harmless to humans.[2][3]

Their life pattern is in stages similar to other members of the Prostigmata: egg, pre-larva, larva, protonymph, deutonymph, tritonymph and adult (male or female). They usually have only one breeding cycle per year.[5]

They are active predators as grown adults. As larvae they are often parasites of insects[6] and other arachnids.[7] This lifestyle is typical of the Parasitengona.[8]

One well-known species from Europe, Asia, and North Africa is Trombidium holosericeum.[9] The systematics of this group has been in flux and many former subfamilies of this are now raised to families within the Trombidioidea.[5][10]

List of genera

File:Trombidiidae-mite-adult.jpg
Adult Trombidiidae mite, predatory on small invertebrates.

According to Joanna Makol[11]

Human use

File:Trombidium.jpg
Dry Trombidium in a Chhattisgarh market

An oil made from Trombidium grandissimum is used in traditional Indian medicine.[12][13]

References

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  5. ↑ a b Zhang, Zhi-Qiang (1998) Biology and ecology of trombidiid mites (Acari: Trombidioidea) Experimental & Applied Acarology 22:139–155 PDF
  6. ↑ L. Conradt, S. A. Corbet, T. J. Roper, E. J. Bodsworth (2002) Parasitism by the mite Trombidium breei on four U.K. butterfly species. Ecological Entomology 27(6):651–659
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  10. ↑ Makol, Joanna (2007) Generic level review and phylogeny of Trombidiidae and Podothrombiidae (Acari: Actinotrichida: Trombidioidea) of the world. Annales Zoologici 57(1): 1–194
  11. ↑ Makol, 2007 : Generic level review and phylogeny of Trombidiidae and Podothrombiidae (Acari: Actinotrichida: Trombidioidea) of the world. Annales Zoologici (Warsaw), vol. 57, n. 1, Template:P..
  12. ↑ Oudhia, P. 1999b. Traditional medicinal knowledge about red velvet mite Trombidium sp. (Acari: Trombidiidae) in Chhattisgarh. Insect Environment 5(3):113. Script error: No such module "webarchive".
  13. ↑ Script error: No such module "citation/CS1".
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