Abstract
A reexamination of the tardigrade collection from the Museo Nacional de Ciencias Naturales (MNCN) in Madrid was carried out. Specimens from the genera Milnesium, Macrobiotus, and Paramacrobiotus were verified in order to provide their correct identification and 15 taxa were identified. Moreover, a list of corrected species identifications from MNCN is provided. Fourteen specimens and 16 eggs, identified previously as Macrobiotus recens, were attributed to a species new for science. Macrobiotus noemiae sp. nov. is most similar to Mac. naskreckii and Mac. recens but it differs from them by details of egg morphology, mainly by the presence of thin flexible filaments on the tops of egg processes.
Highlights
The phylum Tardigrada consists of about 1300 species (Guidetti and Bertolani, 2005; Degma and Guidetti, 2007) that inhabit terrestrial, freshwater, and marine environments throughout the world (Ramazzotti and Maucci, 1983 and later translation by Beasley, 1995; McInnes, 1994; Nelson et al, 2015)
In 1990, Biserov partially revised the hufelandi group and proposed the subgenus Macrobiotus for this group of species (Biserov, 1990a, 1990b), but it was not accepted by later authors
Slides were reexamined under an Olympus BX41 phase contrast light microscope (PCM) associated with a ARTCAM-300Mi digital camera (Olympus Corporation, Tokyo, Japan)
Summary
The phylum Tardigrada consists of about 1300 species (Guidetti and Bertolani, 2005; Degma and Guidetti, 2007) that inhabit terrestrial, freshwater, and marine environments throughout the world (Ramazzotti and Maucci, 1983 and later translation by Beasley, 1995; McInnes, 1994; Nelson et al, 2015).1The tardigrade collection in the Museo Nacional de Ciencias Naturales (MNCN) in Madrid includes 3785 slides containing in total 19,099 specimens, eggs, and exuviae. We provide a description of a new Macrobiotus species belonging to the hufelandi group, previously identified as Mac. recens Cuénot, 1932. Nov., Tables 1 and 2, Figures 1–10 Macrobiotus recens Cuénot, 1932 (Guil, 2002), probably Macrobiotus recens (in Guil et al, 2009, Guil and Sanchez-Moreno, 2013) Type material examined: 12 animals, 3 eggs (one with embryo) (holotype and 14 paratypes) on microscope slides in Faure’s medium.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
