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Species List

Name :  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # All

Name Description First seen
M'klexa1 Species which visited the planet Valakis prior to the NX-01 Enterprise's visit of 2151.1 Dear Doctor
M-113 Creature2 An intelligent life form, once native to the planet M-113. At their height, the species numbered in the millions - Professor Crater compared them to the North American Buffalo, which roamed in herds that covered vast areas. The creatures were roughly humanoid. They fed on salt, which they were able to drain from the bodies of other living beings by touching the suction rings on their hands to the body of their prey. The process was rapid, and caused a quick and painful death to their prey. Because of their method of feeding, the M-113 creatures are sometimes referred to as 'Salt Vampires'.2

The M-113 creature was capable of imitating the appearance of others, an ability it used to get close to its prey. This ability was some form of telepathic projection; the creature did not change its actual physical form, but rather caused others to perceive it differently. It was capable of extracting images from their minds in order to appear as a person they thought of or remembered from their past. One quirk of this ability was that several people could look at an M-113 creature simultaneously and each see it as somebody completely different. This was a potential weakness in the disguise, since the illusion could be detected if the witnesses were to compare what they had seen.2

The M-113 creature was drawn to strong emotions. It would typically seek out people who had strong feelings for another person and then imitate that person in order to provoke emotional reactions.2

By the mid 23rd century very few M-113 creatures remained. Professor Crater and his wife Nancy found what is believed to be the last of them some one or two years prior to 2266. The creature killed Nancy, and subsequently imitated her in order to maintain a relationship with the Professor. In return, he supplied the creature with supplies of salt.2

When the USS Enterprise visited M-113 in 2266, the remaining creature killed two members of the landing party and then imitated one of them in order to beam aboard the ship. It imitated several different people whilst there, killing in order to get more salt. It ultimately killed Professor Crater and attacked Captain Kirk. Doctor McCoy used a phaser to kill the creature; this rendered the species extinct.2
The Man Trap
Macrovirus3 Virus which grows up to a metre across and can defy gravity3 Macrocosm
Maker4 Ancient civilisation which created advanced androids later controlled by Harry Mudd4 I, Mudd
Makusians5 Members of this species attended the conference on the planet Babel in 2267 concerning the entry of Coridan into the Federation.6 Star Trek : Department of Temporal Investigations 2 - Forgotten History
Malcorian7 A pre-warp species, the Malcorians were contacted by the Federation but eventually declined the offer of friendship.7 First Contact
Malkoth8 A Delta Quadrant species erased from time by Annorax. He kept a bottle of their spirits on his ship, the only one remaining in the universe.8 Year of Hell, Part 1
Malon9 Relatively little is known about the Malon; there has been no formal contact with the Malon government as such, merely a series of accidental encounters with their ships. Since these encounters have occurred over thirty thousand light years apart, it is possible that Malon territory extends across these kinds of distances - making their space far larger than the Federation.10 However, the Malon are known to have access to at least one stable "spatial vortex" - apparently a form of wormhole. It is possible that they have access to others which allow them to cross large distances, or even that are able to build such phenomena themselves. At this point in time we simply do not know.9

At least some aspects of Malon technology produce large amounts of Theta radiation, and the Malon dispose of this by dumping it in unpopulated areas of space. The amounts involved are such that this has caused significant levels of pollution, endangering several species. It is the freighters involved in this operation that the USS Voyager has encountered. On their first meeting in early 2375, Voyager offered the Malon technology which would eliminate their Theta radiation problems. unfortunately the Malon still appear to operate a profit based economy; since the waste dumping business would be totally destroyed by such technology, the Malon crews have been less than receptive to this idea.9 Several weeks later a Malon freighter attempted to steal an advanced probe belonging to Voyager, prompting the Starfleet crew to build the Delta Flyer to retrieve the probe first.11

Later in the same year, Voyager encountered an abandoned freighter and recovered two crew members from nearby escape pods. This encounter allowed the crew to learn much more about the Malon. The freighters can carry enormous amounts of the toxins, over twelve trillion isotons on a single vessel. Should such a ship be destroyed it would devastate everything within three light years of the explosion. Their freighter crews generally suffer serious cell damage from their exposure to the Theta radiation, which they call 'freighter blight'. The Malon use analeptic compound injections to counter the freighter blight, but while the treatment keeps them alive it does not prevent skin scarring.

A crew member will typically work six months of the year on a Malon freighter; the exposure so received is expected to cut his life in half. The 'core labourers' who work closest to the waste receive the greatest dosage; less than one third are expected to survive any given trip, but they make more money in two months of working than most Malon earn in a lifetime. Occasionally the radiation causes core labourers to experience mutations, and the Malon have many stories of 'monsters' which attack crew members or damage ships. Voyagers crew encountered one such individual on board the abandoned freighter and were forced to kill him in order to prevent the ship from being sabotaged.12

Malosian13 Traders who operated in the Delphic Expanse. This race may be ficticious, as Archer mentioned them as part of a plot to trick Degra into revealing details of the Xindi weapon program.13 Stratagem
Malurian14 Beta Quadrant15 species which mined minerals from the Akaali home world in 2151, poisoning the natives in the process. Their operation was stopped when the NX-01 intervened.16 The Malurian species was destroyed in 2267 when the Nomad probe sterilised their system.14 The Changeling
Manchovite17 Civilization which were engaged in a war at some point in the 24th century. Gaila and Hagath sold the Manchovites 150,000 hand weapons. They also sold 100,000 of the same weapons to their enemies, thus profiting from both sides of the war. The arms dealers were annoyed when an armistice was subsequently signed.17 Business as Usual
Maple Trees18 Earth plant18 In the Flesh
Mari19 Telepathic civilisation in the Delta Quadrant who have largely eliminated crime19 Random Thoughts
Marijne20 Sentient beings encountered by the Enterprise-D which communicated by directly accessing one anothers thoughts. The beings lived in subspace.20 Interface
Markalian21 The Markalians are a species seen on Deep Space Nine occasionally.21 Some Markalians are notorious for their smuggling and other criminal activities; Odo arrested one on Deep Space Nine during the Federation's takeover of the station.22 Some Markalians fine employed as mercenaries.23 Kassidy Yates employed a Markalian on the Xhosa.24 A wounded Markalian was being cared for in the field hospital on Ajilon Prime when Jake visited25, and at least one was interned by the Dominion in the run up to the Dominion war.26 In 2374 Molly O'Brien wounded a Markalian in Quark's Bar.27 Various Deep Space Nine episodes
Markoffian Sea Lizard28 Life form familiar to Q28 Deja Q
Markonians29 Delta quadrant species which maintained an outpost visited by Voyager in 2376.29 Survival Instinct
Marlonian30 Culture whose pottery resembles both Buranian and Taguan work.30 Rascals
Mathenite31 Possible species name. Legate Ghemor said that the Mathenite government had offered him political sanctuary.31 Second Skin
Mawasi8 Delta Quadrant civilisation; in an alternate timeline the Mawasi allied with Voyager against the Krenim8 Year of Hell, Part 1
Mazarite32 The Mazarites had a corrupt government in the 2150s, which they were trying to correct with Vulcan help.32 Fallen Hero
Mealworm33 Type of worm native to the planet Earth. Those infected by the alien Parasites which infiltrated Starfleet in the 2360s regarded live Mealworms as a tasty snack food.33 Conspiracy
Medusan34 A species known as one of the great contrasts of the galaxy; the thoughts of the Medusans are considered to be the most sublime and beautiful in the entire galaxy, but their physical appearance is so ugly that simply looking at a Medusan is extremely dangerous. Human beings are driven insane by even the smallest glimpse of one, and will often become raving maniacs as a result. In some cases, death by widespread organ failure has been known to follow. The mental discipline possessed by Vulcans allows them to look at a Medusan safely, if it is done through a specially constructed visor. In very rare cases, non-Vulcans trained in Vulcan methods have been able to do the same.34

Medusans are telepathic, and although establishing a telepathic link with another species is very difficult for them, this is their only method of communication. They are unable to vocalise or communicate by other methods, even with a universal translator. Medusans are also known for their extraordinary ability as navigators.34

The image shown depicts a Medusan travelling box. For safety reasons we cannot show you an actual Medusan.34

Is There in Truth no Beauty?
Megarite35 Approximately Humanoid species35 Star Trek : The Motion Picture
Melkotian36 Powerful telepaths, the Melkotians do not like outsiders but were eventually persuaded to make contact with the Federation.36 Spectre of the Gun
Mellitus37 Creature which is solid when still and gaseous when moving37 Wolf in the Fold
Melvaran mud flea38 Animal life form. Considered a delicacy by certain individuals. Zoumas was a fan of eating them as he said that once a person got past their texture the taste was 'not that bad'. He also enjoyed keeping live fleas in his mouth and feeling them jumping around until he crunched them between his teeth.38

In the Kelvin timeline, Doctor McCoy vaccinated Kirk against viral infection carried by Melvaran mud fleas as a pretext to take him aboard the Enterprise.39
Memory Virus40 Organisms that ate peptides within the hosts brain40 Flashback
Menk1 A primitive species which shared the same planet as the Valakians. The Menk were immune to the disease which threatened the Valakians.1 Dear Doctor
Menthar41 Civilisation which fought the Promellians to their mutual annihilation41 Booby Trap
Meridian42 Species who's planet shifted In the alternate dimension they existed in a non-corporeal state.42 Meridian
Metalic Microbe43 Fossilised examples of these life forms were discovered within a graviton ellipse43 One Small Step
Metrone44 A highly advanced species, the Metrones staged a contest between Kirk and a Gorn starship captain.44 Arena
Microbiotic Colony45 Subatomic life form which eats away at metals45 A Matter of Honor
Microbrain46 An inorganic life form native to Velara III.46 Home Soil
Microvirus47 Artificially created organism47 The Vengeance Factor
Mikhal Traveller48 This largely nomadic race love to travel the galaxy in small craft, swapping tall tales with one another.48 Darkling
Mikulak49 Civilisation who donated tissue samples to Nahmi IV to assist in containing the outbreak of Correllium fever there.49 Hollow Pursuits
Minnobia17 Civilisation. During his time as an arms dealer Quark falsely informed Hagath that he couldn't supply him with a mutagenic retrovirus because he had sold it all to the Minnobia for use in their war against the Vek.17 Business as Usual
Mintakan50 These primitive Vulcanoids suffered cultural contamination from an accidental first contact with the Federation.50 Who Watches The Watchers?
Miradorn51 The Miradorn are born in twinned pairs, with an extremely strong bond between each twin. 51 Vortex
Mislan52 Species from the planet Mislan. Voyager encountered a Mislan ship which had been destroyed by the Swarm in 2373.52 The Swarm
Mizarian53 Mizarians value peace above all else, and as a result have been conquered six times in the last three hundred years. 53 Allegiance
Mokra54 Species which lived under paranoid, tyrannical rulers.54 Resistance
Monean55 Species which populated the space ocean.55 Thirty Days
Mordanian56 This species were plunged into decades of civil war after a Starfleet officer gave them advanced weapons.56 Too Short a Season
Mordian Butterfly57 Insectoid life form which resides on Mizar II57 Profit and Loss
Morg / Eymorg58 The planet Sigma Draconis VI once boasted an advanced society, but at some time in the past the planet entered a glacial stage. An underground complex was constructed, but for some reason this came to be inhabited only by the females of the species while the males continued to live on the surface. Both groups lost all knowledge or understanding of their situation, forgetting their past entirely. The men, who came to call themselves Morg, reverted to stone age technology. The women, or Eymorg, continued to live within the technologically sophisticated underground complex, but lost all understanding of it. The complex was run by a computer system which was based on a Humanoid brain. This device controlled every aspect of the complex, but since it was based on organic components it had a limited life span and needed replacing every so often.

To facilitate this the Eymorg used a device called the Teacher. This temporarily implanted advanced knowledge and skills into an individual, allowing them to understand and use their other technology. Under the influence of the Teacher an Eymorg incapacitated the crew of the USS Enterprise and removed Commander Spock's brain from his body for use in the control system. Kirk was able to track the Eymorg to Sigma Draconis VI, but the Eymorg were extremely reluctant to return the brian to him. They used a variety of methods to control both the Morg and the Enterprise officers, including belts which caused intense pain at the touch of a button. Eventually Kirk was able to overcome the Eymorg and recover the brain, and using the Teacher Doctor McCoy was able to restore it to its body.

Kirk convinced the Eymorg that they should learn to coexist with the Morg and that both should fend for themselves without depending on their technology.58
Spock's Brain
Moropa53 Society hostile to the Bolians. As of 2366, an uneasy truce existed between the Bolians and the Moropa.53 Allegiance
Mugato59 White simian creature native to Tyree's planet. The Mugato had a highly poisonous bite, which would be fatal if left untreated. The Kanutu women of the planet knew how to cure a Mugato bite by mingling their blood with that of the victim via a Mako root, one of the many biological oddities on the planet. It was said that a man who was cured in this way became bonded to the Kanutu woman and could deny her nothing. Kirk was bitten by a Mugato during his visit to the planet in 2267, and subsequently cured by Nona. He dismissed the possibility of a resulting bond between them as superstition.59 A Private Little War
Muktok Plant60 Plant native to Betazed.60 Menage a Troi
Muse61 This non-corporeal species takes corporeal form and feeds off the creative energy of artists.61 The Muse
Mylean62 Delta Quadrant civilisation similar to Talaxians62 Scientific Method

Name :  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # All

Colour key

Canon source Backstage source Novel source DITL speculation


# Series Season Source Comment
1 ENT 1 Dear Doctor
2 TOS 1 The Man Trap
3 VOY 3 Macrocosm
4 TOS 2 I, Mudd
5 Star Trek : Department of Temporal Investigations 2 - Forgotten History
6 TOS 2 Journey to Babel This species is also referred to in Star Trek Online as Zambeans
7 TNG 4 First Contact
8 VOY 4 Year of Hell, Part 1
9 VOY 5 Night
10 Generic canonical information
11 VOY 5 Extreme Risk
12 VOY 5 Juggernaut
13 ENT 3 Stratagem
14 TOS 2 The Changeling
15 Star Trek : Star Charts Page 60
16 ENT 1 Civilization
17 DS9 5 Business as Usual
18 VOY 5 In the Flesh
19 VOY 4 Random Thoughts
20 TNG 7 Interface
21 Various Deep Space Nine episodes
22 DS9 1 Emissary
23 DS9 1 The Passenger
24 DS9 4 For the Cause
25 DS9 5 ...Nor the Battle to the Strong
26 DS9 5 In Purgatory's Shadow
27 DS9 6 Time's Orphan
28 TNG 3 Deja Q
29 VOY 6 Survival Instinct
30 TNG 6 Rascals
31 DS9 3 Second Skin
32 ENT 1 Fallen Hero
33 TNG 1 Conspiracy
34 TOS 3 Is There in Truth no Beauty?
35 Star Trek : The Motion Picture
36 TOS 3 Spectre of the Gun
37 TOS 2 Wolf in the Fold
38 ENT 2 Canamar
39 Star Trek XI
40 VOY 3 Flashback
41 TNG 3 Booby Trap
42 DS9 3 Meridian
43 VOY 6 One Small Step
44 TOS 1 Arena
45 TNG 2 A Matter of Honor
46 TNG 1 Home Soil
47 TNG 3 The Vengeance Factor
48 VOY 3 Darkling
49 TNG 3 Hollow Pursuits
50 TNG 3 Who Watches The Watchers?
51 DS9 1 Vortex
52 VOY 3 The Swarm
53 TNG 3 Allegiance
54 VOY 2 Resistance
55 VOY 5 Thirty Days
56 TNG 1 Too Short a Season
57 DS9 2 Profit and Loss
58 TOS 3 Spock's Brain
59 TOS 2 A Private Little War
60 TNG 3 Menage a Troi
61 DS9 4 The Muse
62 VOY 4 Scientific Method
Series : ENT Season 1 (Disc 3)
Episode : Dear Doctor
Series : TOS Season 1 (Disc 1)
Episode : The Man Trap
Series : VOY Season 3 (Disc 3)
Episode : Macrocosm
Series : TOS Season 2 (Disc 2)
Episode : I, Mudd
Novel : Star Trek : Department of Temporal Investigations 2 - Forgotten History
Series : TOS Season 2 (Disc 3)
Episode : Journey to Babel
Comment : This species is also referred to in Star Trek Online as Zambeans
Series : TNG Season 4 (Disc 3)
Episode : First Contact
Series : VOY Season 4 (Disc 2)
Episode : Year of Hell, Part 1
Series : VOY Season 5 (Disc 1)
Episode : Night
Source : Generic canonical information
Series : VOY Season 5 (Disc 1)
Episode : Extreme Risk
Series : VOY Season 5 (Disc 6)
Episode : Juggernaut
Series : ENT Season 3 (Disc 4)
Episode : Stratagem
Series : TOS Season 2 (Disc 1)
Episode : The Changeling
Book : Star Trek : Star Charts
Comment : Page 60
Series : ENT Season 1 (Disc 2)
Episode : Civilization
Series : DS9 Season 5 (Disc 5)
Episode : Business as Usual
Series : VOY Season 5 (Disc 1)
Episode : In the Flesh
Series : VOY Season 4 (Disc 3)
Episode : Random Thoughts
Series : TNG Season 7 (Disc 1)
Episode : Interface
Series : DS9 Season (Disc )
Episode : Various Deep Space Nine episodes
Series : DS9 Season 1 (Disc 1)
Episode : Emissary
Series : DS9 Season 1 (Disc 3)
Episode : The Passenger
Series : DS9 Season 4 (Disc 6)
Episode : For the Cause
Series : DS9 Season 5 (Disc 1)
Episode : ...Nor the Battle to the Strong
Series : DS9 Season 5 (Disc 4)
Episode : In Purgatory's Shadow
Series : DS9 Season 6 (Disc 6)
Episode : Time's Orphan
Series : TNG Season 3 (Disc 3)
Episode : Deja Q
Series : VOY Season 6 (Disc 1)
Episode : Survival Instinct
Series : TNG Season 6 (Disc 2)
Episode : Rascals
Series : DS9 Season 3 (Disc 2)
Episode : Second Skin
Series : ENT Season 1 (Disc 5)
Episode : Fallen Hero
Series : TNG Season 1 (Disc 6)
Episode : Conspiracy
Series : TOS Season 3 (Disc 1)
Episode : Is There in Truth no Beauty?
Film: Star Trek : The Motion Picture
Series : TOS Season 3 (Disc 2)
Episode : Spectre of the Gun
Series : TOS Season 2 (Disc 3)
Episode : Wolf in the Fold
Series : ENT Season 2 (Disc 4)
Episode : Canamar
Film: Star Trek XI
Series : VOY Season 3 (Disc 1)
Episode : Flashback
Series : TNG Season 3 (Disc 2)
Episode : Booby Trap
Series : DS9 Season 3 (Disc 2)
Episode : Meridian
Series : VOY Season 6 (Disc 2)
Episode : One Small Step
Series : TOS Season 1 (Disc 5)
Episode : Arena
Series : TNG Season 2 (Disc 2)
Episode : A Matter of Honor
Series : TNG Season 1 (Disc 4)
Episode : Home Soil
Series : TNG Season 3 (Disc 2)
Episode : The Vengeance Factor
Series : VOY Season 3 (Disc 5)
Episode : Darkling
Series : TNG Season 3 (Disc 5)
Episode : Hollow Pursuits
Series : TNG Season 3 (Disc 1)
Episode : Who Watches The Watchers?
Series : DS9 Season 1 (Disc 3)
Episode : Vortex
Series : VOY Season 3 (Disc 1)
Episode : The Swarm
Series : TNG Season 3 (Disc 4)
Episode : Allegiance
Series : VOY Season 2 (Disc 3)
Episode : Resistance
Series : VOY Season 5 (Disc 3)
Episode : Thirty Days
Series : TNG Season 1 (Disc 4)
Episode : Too Short a Season
Series : DS9 Season 2 (Disc 5)
Episode : Profit and Loss
Series : TOS Season 3 (Disc 1)
Episode : Spock's Brain
Series : TOS Season 2 (Disc 5)
Episode : A Private Little War
Series : TNG Season 3 (Disc 5)
Episode : Menage a Troi
Series : DS9 Season 4 (Disc 6)
Episode : The Muse
Series : VOY Season 4 (Disc 2)
Episode : Scientific Method

© Graham & Ian Kennedy Page views : 389,101 Last updated : 5 Apr 2004