Milnesium variefidum  Morek, G¹siorek, Stec, Blagden & Michalczyk, 2016

 

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You may freely use data available on this site, provided that you cite it as:
 Tardigrada Register: www.tardigrada.net/register/0020.htm 

along with the appropriate original sources cited in this document and with the date stamp: 12-04-2016.

 


  1. Names
  2. Description
  3. Images
  4. Morphometry
  5. Molecular data
  6. Distribution
  7. Sources
     

1. Former names and synonyms

      None.

 


2. Description
 

Population

Description

Source

Contributor

Type series

  1. Habitus
    Body yellowish before fixation, eyes present in 32% of fixed specimens.

  2. Cuticle
    In juveniles cuticle appears smooth and only occasionally with poorly outlined pseudoplates and single very faint pseudopores in the caudo-dorsal part of the body. In adults the dorsal cuticle is covered with small faint pseudopores. The pseudoplates are arranged in following way: the segnemt between legs I and II and the segment between legs II and III are each covered with a single rectangular paired plate. Segments with legs II and III are both covered with a triple rectangular paired plate. The first segment posterior to legs III is covered with a single rectrangal paired plate and two smaller dorso-lateral pseudoplates. The second segment posterior to legs III is covered by a complex of ten pseudoplates, eight clustered on the dorsum and two placed dorsolaterally. Finally, on the segment immediately above legs IV there is paired pseudoplate.

  3. Buccal apparatus
    Six peribuccal papillae and six peribuccal lamellae (of unequal size, 4+2) around the mouth opening. Buccal tube narrow and long (standard width on average 27% of the length), and funnel-shaped, wider anteriorly (posterior diameter on average 85% of the anterior diameter). Pharyngeal bulb elongated, pear-shaped and without placoids or septulum.
    Legs and claws

  4. Legs and claws
    Claws of the Milnesium type, slender. Primary branches on all legs with small, but distinct accessory points.  Secondary branches with rounded basal thickenings. In juveniles (i.e. first two instars), claw configuration: [2-2]-[2-2], in adults claw configuration: [2-3]-[2-2]. In ca. 50% individuals single cuticular bars under claws I-III are absent. In the remaining half of the type series, bars are very faint.

  5. Eggs
    Oval, smooth, deposited in exuvia.

  6. Remarks
    None.

Morek et al. (2016)

W. Morek

 


3. Images
 

Population

Habitus

Cuticle

Buccal apparatus

Claws

Eggs

Contributor

Type series

[holotype|dorsal view.1a|×20|PCM]
[holotype|dorsal view.1b|×20|PCM]
[holotype|dorsal cuticle.1|×100|PCM] [paratype|dorsal view.1a|×100|PCM]
[paratype|ventral view.1a|×100|PCM]
[paratype|claws III.adult.2a|×100|PCM]
[paratype|claws III.adult.2b100|PCM]
[paratype|claws III.adult.2c100|PCM]
[paratype|claws III.adult.2d100|PCM]
[paratype|claws
III.juvenile.3a100|PCM
]
[paratype|claws
III.juvenile.3b100|PCM
]
[paratype|claws
III.juvenile.3c100|PCM
]
[paratype|claws
IV.4a100|PCM
]
[paratype|claws
IV.4b100|PCM
]
[paratype|claws IV.4c100|PCM]

?

W. Morek

 


4. Morphometry
 

Population

Data

Source

Contributor

Type series

[15]

Morek et al. (2016)

W. Morek

 


5. Molecular data
 

Population

Sequence

GenBank

Source

Contributor

Type series

18S
28S
COI
ITS2 H1
ITS2 H2

KT951664
KT951665
KT951663
KT951667
KT951666

Morek et al. (2016)

W. Morek

 


6. Distribution
 

Sample

Coordinates

Altitude

Location name

Substrate

Collection date

Source

Contributor

United Kingdom, GB.001
(locus typicus)

57°20'31''N
02°37'08''W

130 m asl

United Kingdom, Scotland, Mountain Ash tree growing near to the village of Inch

lichen on tree

11.08.2014

Morek et al. (2016)

W. Morek

 


7. Sources


MOREK, W., G„SIOREK, P., STEC, D., BLAGDEN, B. & MICHALCZYK, £. (2016) Experimental taxonomy exposes ontogenetic variability and elucidates the taxonomic value of claw configuration in Milnesium Doyère, 1840 (Tardigrada: Eutardigrada: Apochela). Contributions to Zoology, 85(2): 173-200.
 


 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Copyright by £ukasz Michalczyk

statystyka