''Gigantolaelaps mattogrossensis'' is a

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 evid ...

from the Americas. It has been found on the

marsh rice rat The marsh rice rat (''Oryzomys palustris'') is a semiaquatic North American rodent in the family Cricetidae. It usually occurs in wetland habitats, such as swamps and salt marshes. It is found mostly in the eastern and southern United States, fr ...

(''Oryzomys palustris''),

hispid cotton rat The hispid cotton rat (''Sigmodon hispidus'') is a rodent species long thought to occur in parts of South America, Central America, and southern North America. However, recent taxonomic revisions, based on mitochondrial DNA sequence data, have ...

(''Sigmodon hispidus''),

black rat The black rat (''Rattus rattus''), also known as the roof rat, ship rat, or house rat, is a common long-tailed rodent of the stereotypical rat genus ''Rattus'', in the subfamily Murinae. It likely originated in the Indian subcontinent, but is n ...

(''Rattus rattus''),

brown rat The brown rat (''Rattus norvegicus''), also known as the common rat, street rat, sewer rat, wharf rat, Hanover rat, Norway rat, Norwegian rat and Parisian rat, is a widespread species of common rat. One of the largest muroids, it is a brown o ...

(''Rattus norvegicus''), and

white-footed mouse The white-footed mouse (''Peromyscus leucopus'') is a rodent native to North America from Ontario, Quebec, Labrador, and the Maritime Provinces (excluding the island of Newfoundland) to the southwestern United States and Mexico. In the Maritimes, ...

(''Peromyscus leucopus'') in the United States (Florida, Georgia, South Carolina, and Texas).; . In Venezuela, it has been recorded from ''

Holochilus brasiliensis ''Holochilus brasiliensis'', also known as the Brazilian marsh ratMusser, G.G. and Carleton, M.D. 2005. Superfamily Muroidea. Pp. 894–1531 in Wilson, D.E. and Reeder, D.M. (eds.)Mammal Species of the World: a taxonomic and geographic refer ...

'', '' Sigmodon hirsutus'', and ''

Marmosa robinsoni Robinson's mouse opossum (''Marmosa robinsoni'') is a species of opossum in the family Didelphidae. It is found in Belize, Colombia, Ecuador, Grenada, Honduras, Panama, Peru, Trinidad and Tobago, and Venezuela. Robinson's mouse opossums move al ...

''. In Argentina, it has been found on '' Scapteromys aquaticus'', ''

Oligoryzomys flavescens ''Oligoryzomys flavescens'', also known as the flavescent colilargo or yellow pygmy rice rat is a species of rodent in the genus ''Oligoryzomys'' of family Cricetidae. It is found in southern South America, occurring in southern Brazil, Paraguay, ...

'', and ''Holochilus brasiliensis''. The North American form was first described as a separate species, ''Gigantolaelaps cricetidarum'', and is still occasionally considered as such.

References

Literature cited

* * * * * * * * Laelapidae Animals described in 1935 Arachnids of North America Arachnids of South America Parasites of rodents {{Laelapidae-stub