Milnesium
Key to the determination of recent species of the genus Milnesium . (adult females) 1. Claws of all legs without main branches.................................. Milnesium dujiangensis Claws of all legs with main branches........................................................................... 2...
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Format: | Text |
Language: | unknown |
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Zenodo
2006
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Online Access: | https://dx.doi.org/10.5281/zenodo.6255507 https://zenodo.org/record/6255507 |
Summary: | Key to the determination of recent species of the genus Milnesium . (adult females) 1. Claws of all legs without main branches.................................. Milnesium dujiangensis Claws of all legs with main branches........................................................................... 2 2. Cuticle reticulated 1...................................................................................................... 3 Cuticle smooth............................................................................................................. 4 3. With gibbosities on dorsal surface and eyespots. Inner claws of all legs with basal spurs ..................................................................................................... Milnesium reticulatum Without gibbosities and eyespots. Claws of all legs without basal spurs....................... ...................................................................................................... Milnesium katarzynae 4. Buccal tube wide and short, with its diameter decreasing to the caudal end. Its diameter in the region of mouth opening exceed 30 µm ..................... Milnesium eurystomum Buccal tube cylindrical, with diameter lesser then 30 µm............................................ 5 5. Without accessory points on main claw branches......................................................... 6 With accessory points on main claw branches.............................................................. 7 6. Outer claws without basal spurs; length ratio between complex base+secondary branch and basal spur of inner claws do not exceed 2.5................................................. .......................................................................................... Milnesium reductum sp. nov. All claws with basal spurs; length ratio between complex base+seconfary branch and basal spur not lesser then 3.......................................... Milnesium longiungue sp. nov. 7. Short claws; pt value for main claw branches in legs IV lesser then 40, pt value for complex base+secondary branch in legs IV lesser then 30 ...... Milnesium brachyungue Longer claws; pt value for main claw branches in legs IV larger then 40; pt value for complex base+secondary branch in legs IV larger then 30........................................... 8 8. Longer, more subtile claws; pt value for main claw branches in legs IV larger then 60....................................................................................................................................... 9 Shorter, more massive claws; pt value for main claw branches in legs IV lesser then 60.................................................................................................................................... 10 9. Buccal tube length exceed 50 µm; length of the main claw branches in legs IV exceed 30 µm; with basal spurs on all claws ............................... Milnesium asiaticum sp. nov. Buccal tube length not exceed 42 µm (usually lesser then 40 µm); length of the main claw branches in legs IV not exceed 30 µm; outer claws on legs I–III and both claws on hind legs lacks basal spur ........................................ Milnesium almatyense sp. nov. 10. Pt ss value more then 70 (70.7–75.9); with basal spurs on all claws................................................................................................................... Milnesium antarcticum sp. nov. Pt ss value lesser then 70 (usually 63–66); basal spurs of outer claws could be reduced.................................................................................................................................... 11 11. Four peribuccal lamellae; pt ss value 61.98–64.37 (according to Pilato & Binda 1991); 1. This character is also noted in some populations of Milnesium tardigradum (Nelson & Horning 1979) but in my opinion this material should be reinvestigated to ascertain its taxonomic position. in the complex base+secondary branch apical points are almost equal in size............... .............................................................................................. Milnesium tetralamellatum Six peribuccal lamellae; pt ss value 62.7–67.7; in the complex base+secondary branch point a is distinctly smaller then point b................................... Milnesium tardigradum : Published as part of Tumanov, Denis V., 2006, Five new species of the genus Milnesium (Tardigrada, Eutardigrada, Milnesiidae), pp. 1-23 in Zootaxa 1122 on pages 22-23, DOI: 10.5281/zenodo.171737 : {"references": ["Pilato, G. & Binda, M. G. (1991) Milnesium tetralamellatum new species of Milnesiidae from Africa (Eutardigrada). Tropical Zoology, 4, 103 - 106."]} |
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