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Arrenurus (αρρεν - male, ουρά - tail) is a genus of water mites within the family Arrenuridae, and was first described by Antoine Louis Dugès in 1834. It has a cosmopolitan distribution in lentic waters, even on remote Pacific islands, [1] and is found on every continent, with the possible exception of Antarctica.
The mite fossil record is sparse, due to their small size and low preservation potential. [5] The oldest fossils of acariform mites are from the Rhynie Chert, Scotland, which dates to the early Devonian, around 410 million years ago [6] [5] while the earliest fossils of Parasitiformes are known from amber specimens dating to the mid-Cretaceous ...
Sarcoptes is a genus of skin parasites, and part of the larger family of mites collectively known as "scab mites". They are also related to the scab mite Psoroptes, also a mite that infests the skin of domestic animals. Sarcoptic mange affects domestic animals and similar infestations in domestic fowls cause the disease known as "scaly leg".
As mites, Stigmaeidae have unsegmented bodies with eight legs (six in larvae). They can be recognised by: prodorsum without transversal groove, sacs or tubes; suranal and aggenital shields separate; cheliceral bases usually separate (rarely fused or conjunct); palps stout with tibial claws at least 1/3 length of tarsus; peritreme absent.
The eggs are usually laid in dark and humid areas. They are rarely laid on the snake where the adult mites are found. Eggs hatch in one day in ideal conditions. After hatching, the young mites go through the larval stage, which takes about one or two days. The larvae tend to move very little away from the eggs, despite having the ability to walk.
Erythraeidae is a family of mites belonging to the Trombidiformes. [2] Larval forms of these mites are parasitic on various other arthropods, for example harvestmen, but the adults are free-living predators. These oval mites are rather large, usually reddish coloured and densely hairy.
The larvae of these mites range from translucent white to tan in colour. They are tiny and oval in shape and size, have six legs, and are wingless. Nymphs look similar to larvae, with the exception of being slightly larger and having eight legs. [7] Adult phytoseiids are less than 0.5 mm in size, pear-shaped, wingless, and have eight legs.
The life cycle of mites consists of egg, prelarva, larva, protonymph, deutonymph, tritonymph, and adult. The larvae, commonly referred to as chiggers, are the only ectoparasitic stage feeding on the body fluids of rodents and other opportunistic mammals. Thus, they are the only stage in the life of mites that transmit the infection.