This is a list of the known wild biota of the Isle of Man .
Each listing follows the following format: English name (where one exists), binomial/trinomial scientific name with authorities for uncommon species, Manx name (where one exists), status.
Updated July 2023
As of 2023 the Isle of Man has 20 regularly occurring migrant and resident species of butterfly, with a total of 23 all-time records in the wild.
As of 2020 research by the Manx Bat Group has found that there are at least nine species of Chiroptera on the Isle of Man:
Note that Manx nomenclature traditionally did not differentiate between species. Most whales are known as muc varrey (sea pigs) or perkin mooar and small dolphins as doraid.
All sorts of domesticated species have been brought to the Isle of Man by humans over the millennia. Two notable landrace breeds have evolved distinctively on the island:
The format here is common English name (if one exists), followed by scientific name, followed by authority in brackets. There are no Manx names.
218 species of Arachnids have been identified in the Isle of Man as of 1 January 2002. [29]
As of September 2022, 1801 distinct species from the kingdom Fungi have been recorded on NBN Atlas Isle of Man. [30]
Sixty-two species of dung fungi have been recorded in the Isle of Man as of 13 April 2009 by Michael J. Richardson, a British mycologist. The following are from a sample of rabbit (Oryctolagus cuniculus) pellets collected at the Ayres on 6 January 2008.
Tord Tamerlan Teodor Thorell was a Swedish arachnologist.
The spider genus Steatoda, in the family Theridiidae, includes about 120 recognized species, distributed around the world. One common name is cupboard spider, for many species build their webs in dark, sheltered, undisturbed places around the house or garden, in sheds and garages, under garden, in compost bins, and the like. Signs of the cupboard spider include small white spots of spider droppings, like small splashes of paint, on the floor underneath the web.
Xysticus is a genus of ground crab spiders described by C. L. Koch in 1835, belonging to the order Araneae, family Thomisidae. The genus name is derived from the Ancient Greek root xyst, meaning "scraped, scraper".
Attulus is a genus of jumping spiders that was first described by Eugène Louis Simon in 1889. The name is a diminutive form of a common prefix for salticid genera, -attus.
Salticus is a genus of the family Salticidae. Salticus is the type genus for the family Salticidae.
Clubiona is a genus of sac spiders that was first described by Pierre André Latreille in 1804.
Tetragnatha is a genus of long-jawed orb-weavers found all over the world. It was first described by Pierre André Latreille in 1804, and it contains hundreds of species. Most occur in the tropics and subtropics, and many can run over water. They are commonly called stretch spiders in reference to their elongated body form and their ability to hide on blades of grass or similar elongated substrates by stretching their front legs forward and the others behind them. The name Tetragnatha is derived from Greek, tetra- a numerical prefix referring to four and gnatha meaning "jaw". Evolution to cursorial behavior occurred long ago in a few different species, the most studied being those found on the Hawaiian islands. One of the biggest and most common species is T. extensa, which has a holarctic distribution. It can be found near lakes, river banks or swamps. Large numbers of individuals can often be found in reeds, tall grass, and around minor trees and shrubs.
Pardosa is a large genus of wolf spiders, commonly known as the thin-legged wolf spiders. It was first described by C. L. Koch, in 1847, with more than 500 described species that are found in all regions of the world.
Laxey Bay is a coastal feature and Marine Nature Reserve on the east coast of the Isle of Man in the north Irish Sea. Geographically it is bounded by Laxey Head to the north and Clay Head to the south.
Wilhelmus Egbertus Antonius Janssen, better known as Father Chrysanthus OFMCap, was a Dutch priest and biology teacher. He was known for his studies in arachnology. Initially he was concerned with the spiders of the Netherlands but he became a specialist on New Guinea spiders. Two spider species were named in his honor following his death.