Dinothrombium

Dinothrombium is a genus of mites belonging to the family Trombidiidae,[1] which are commonly known as red velvet mites. As suggested by the name, Dinothrombium are covered in fine hairs and they are bright red, sometimes with markings in paler colors. Their bright colours appear to be aposematic, hinting at their unpleasant taste and smell.[2] They are generally fairly large for their family and the African D. tinctorum, where adults typically are 12–14 mm (0.47–0.55 in), is one of the largest known species of red velvet mites (and the largest mites, if disregarding ticks engorged after feeding).[2][3] Dinothrombium are found in all the world's continents, except Antarctica, often in dry areas, where they spend most of the time underground in the soil or sand, emerging after heavy rain.[2][3] During this time, they can be conspicuous and numerous.[2]

Dinothrombium
Emerging after rain in Mozambique
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Class:	Arachnida
Order:	Trombidiformes
Family:	Trombidiidae
Genus:	Dinothrombium Oudemans, 1910

They are harmless to humans and regarded as beneficial because they feed on tiny arthropods and their eggs, including pest species.[3]