Macrobiotus harmsworthi

• Main Authors: Kaczmarek, Łukasz, Gołdyn, Bartłomiej, Prokop, Zofia M., Michalczyk, Łukasz
• Format: Text
• Language: unknown
• Published: Zenodo 2011
• Subjects: Biodiversity; Taxonomy; Animalia; Tardigrada; Eutardigrada; Parachela; Macrobiotidae; Macrobiotus; Macrobiotus harmsworthi; Antarctic; Patagonia; Dronning Maud Land; New Zealand; Argentina; Barros; Antarc*; Spitsbergen; Tardigrade; Tierra del Fuego
• Online Access: https://dx.doi.org/10.5281/zenodo.5688694; https://zenodo.org/record/5688694

Key to the species of the harmsworthi group 1. Cuticle either with pores, or granulation, or stripes of pigmentation............................................. 2 -. Cuticle smooth....................................................................................... 9 2 (1). Pores in cuticle present, granulation and stripes of pigmentation absent........................................... 3 -. Pores in cuticle absent, granulation or stripes of pigmentation present............................................ 4 3 (2). Egg shell smooth, processes in the shape of low cones (mammillate-like) without finger-like structures at the process base, bubble-like structures at the top of processes present, 16–21 processes on the egg circumference........................ ....................................................................... M. krynauwi Dastych & Harris, 1995 -. Egg shell covered with dots, processes in the shape of high cones with finger-like structures at the process base, bubble-like structures at the top of processes absent, 6–8 processes on the egg circumference.............. M. liviae Ramazzotti, 1962 4 (2). Nine bands of brown pigmentation on cuticle present*................................... M. baltatus McInnes, 1991 -. Cuticle without bands of pigmentation..................................................................... 5 5 (4). Granulation on cuticle in the shape of large tubercles (1.5 –2.0), present only on the caudal end of the body........................................................................................ M. arguei Pilato & Sperlinga, 1975 -. Granulation present on the entire dorsal side of the body....................................................... 6 6 (5). Granulation on cuticle in the shape of small tubercles, eyes present.............................................. 7 -. Granulation on cuticle in the shape of fine dots; eyes absent................................................... 8 7 (6). First band of teeth in the oral cavity armature and granulation on legs I–III absent, lunules IV smooth.............................................................................................. M. perfidus Pilato and Lisi, 2009 -. First band of teeth in the oral cavity armature and granulation on legs I–III present, lunules IV dentate......................................................................................... M. pseudocoronatus Pilato et al., 2006 8 (6). Areolae around the bases of egg processes absent, egg processes smooth, in the shape of spines with a wide base and a sharp apex, processes smooth, 22–23 processes on the egg circumference....................... M. contii Pilato & Lisi, 2006 -. Areolae around the bases of egg processes present, egg processes in the shape of cones with a blunt apex, processes reticulated, 10–12 processes on the egg circumference.................................... M. pseudonuragicus Pilato et al., 2004 9 (1). Spurs on claws present....................................................... M. armatus Pilato & Binda, 1996 -. Spurs on claws absent................................................................................. 10 10 (9). Egg processes situated very close (in contact) one to another................. Macrobiotus neuquensis Rossi et al., 2009 -. Spaces between egg processes present.................................................................... 11 11 (10). Areolation on eggs present............................................................................. 12 -. Areolation on eggs absent.............................................................................. 19 12 (11). Each process inside a single areola...................................................... M. mauccii Pilato, 1974 -. A number of areolae present around each process........................................................... 13 13 (12). Egg areolation poorly visible (areolae with thin walls), sometimes not fully developed, processes with a blunt apex...... 14 -. Egg areolation fully developed and well visible, processes with a sharp or indented apex............................ 15 14 (13). Eyes present, bubble-like structures at the top of processes absent, egg processes in the shape of cones, egg shell covered by delicate stripes........................................................ M. harmsworthi obscurus Dastych, 1985 -. Eyes absent, bubble-like structures at the top of processes present, egg processes in the shape of a bells (domes), egg shell cov- ered by delicate dots.............................................................. M. peterseni Maucci, 1991 15 (13). Body red, the oral cavity armature of the echinogenitus - type, lunules IV not thickened and without indentations, a crown of dots around the bases of processes present.................................... M. ovostriatus Pilato & Patanè, 1998 -. Body transparent, the oral cavity armature of the harmsworthi - type, lunules IV thickened or with indentations, a crown of dots around the bases of processes absent..................................................................... 16 16 (15). Sixteen areolae around the base of each egg process............................. M. pseudoliviae Pilato & Binda, 1996 -. Six areolae around the base of each egg process........................................................... 17 17 (16). Process top divided into a number of points, more than 13 processes on the egg circumference............................................................................................... M. nuragicus Pilato & Sperlinga, 1975 -. Process top with 1–2 points, less than 13 processes on the egg circumference..................................... 18 18 (17). Eyes and granulation on legs I present, lunules IV thickened, pt of stylet supports less than 76 % , egg processes without a flex- ible upper portion........................................................ M. hieronimi Pilato & Claxton, 1988 -. Eyes and granulation on legs I absent, lunules IV with indentations, pt of stylet supports more than 77 % , egg processes with a flexible upper portion...................................................... M. barbarae Kaczmarek et al., 2007 19 (11). Egg processes hemispherical............................................................................ 20 -. Egg processes conical................................................................................. 21 20 (19). Egg shell with reticular sculpture.................................................... M. montanus Murray, 1910 -. Egg shell without reticular sculpture............................................... M. mottai Binda & Pilato, 1994 21 (19). A well visible crown of swellings, dots or stripes around the bases of egg processes present......................... 22 -. A crown of swellings, dots or stripes around the bases of egg processes absent.................................... 28 22 (21). Egg processes smooth....................................................... M. australis Pilato & D'Urso, 1976 -. Egg processes reticulated or with small round bubbles....................................................... 23 23 (22). A crown around the bases of egg processes composed of rectangular swellings, processes in the shape of spines with a wide base, more than 25 processes on the egg circumference.......................................... M. binieki sp. nov. -. A crown around the bases of egg processes composed of dots or stripes, processes in the shape of low cones, less than 20 pro- cesses on the egg circumference........................................................................ 24 24 (23). A crown around the bases of egg processes composed of radiate stripes forming a larger radiate crown, processes with a blunt, indented apex.................................................................. M. radiatus Pilato et al., 1991 -. A crown around the bases of egg processes composed of dots, processes with a sharp apex.......................... 25 25 (24). Weakly visible granulation present only on legs IV, terminal portion of egg processes not flexible................................................................................................... M. rigidus Pilato & Lisi, 2006 -. Evident granulation present on legs I–IV, terminal portion of egg processes flexible................................ 26 26 (25). Eyes absent................................................................... M. patiens Pilato et al., 2000 : Published as part of Kaczmarek, Łukasz, Gołdyn, Bartłomiej, Prokop, Zofia M. & Michalczyk, Łukasz, 2011, New records of Tardigrada from Bulgaria with the description of Macrobiotus binieki sp. nov. (Eutardigrada: Macrobiotidae) and a key to the species of the harmsworthi group, pp. 29-39 in Zootaxa 2781 on pages 35-36, DOI: 10.5281/zenodo.206999 : {"references": ["Dastych, H. & Harris, J. M. (1995) A new species of the genus Macrobiotus from inland nunataks, Dronning Maud Land (Tardigrada). Entomologische Mitteilungen aus dem Zoologischen Museum Hamburg, 11, 176 - 182", "Ramazzotti, G. (1962) Tardigradi del Cile, con descrizione di quattro nuove specie e di una varieta. Atti Societa Italiana di Scienze Naturali Museo Storia Naturale Milano, 101, 275 - 287.", "McInnes, S. J. (1991) Notes on tardigrades from the Pyrenees, including one new species. Pedobiologia, 35, 11 - 26.", "Pilato, G. & Sperlinga, G. (1975) Tardigradi muscicoli di Sardegna. Animalia, 3, 243 - 258.", "Pilato, G. & Lisi, O. (2009) Tardigrades of the Seychelles Islands, with the description of three new species. Zootaxa, 2124, 1 - 20.", "Pilato, G., Binda, M. G. & Lisi, O. (2004) Notes on tardigrades of the Seychelles with the description of three new species. Italian Journal of Zoology, 71, 171 - 178.", "Pilato, G. & Binda, M. G. (1996) Two new species and new records of Macrobiotus (Eutardigrada) from New Zealand. New Zealand Journal of Zoology, 23, 375 - 379.", "Rossi, G., Claps, M. & Ardohain, D. (2009) Tardigrades from northwestern Patagonia (Neuquen Province, Argentina) with the description of three new species. Zootaxa, 2095, 21 - 36.", "Pilato, G. (1974) Tre nouve specie di Tardigradi muscicoli di Cina. Animalia, 1, 59 - 68.", "Dastych, H. (1985) West Spitsbergen Tardigrada. Acta Zoologica Cracoviensia, 28, 169 - 214.", "Maucci, W. (1991) Due nuove specie di tardigradi muscicoli della Spagna. Bollettino del Museo Civico di Storia Naturale di Verona, 15, 257 - 264.", "Pilato, G. & Patane, M. (1998) Macrobiotus ovostriatus, a new species of eutardigrade from Tierra del Fuego. Bollettino delle sedute della Accademia gioenia di scienze naturali in Catania, 30, 353, 263 - 268.", "Pilato, G. & Claxton, S. K. (1988) Tardigrades from Australia. 1. Macrobiotus hieronimi and Minibiotus maculartus, two new species of eutardigrades. Animalia, 15 83 - 89.", "Kaczmarek, L. & Michalczyk, L. & Degma, P. (2007) Description of a new tardigrade, Macrobiotus barbarae (Eutardigrada: Macrobiotidae) from the Dominican Republic. Annales Zoologici, 57 (3), 363 - 369.", "Murray, J. (1910) Tardigrada. British Antarctic Expedition 1907 - 9. Reports on the Scientific Investigations. Volume 1 Biology, (Part V), 81 - 185.", "Binda, M. G. & Pilato, G. (1994) Macrobiotus mottai, nuova specie di eutardigrado dell'Antartide. Animalia, 21, 53 - 56.", "Pilato, G., Binda M. G. & Catanzaro, R. (1991) Remarks on some tardigrades of the African fauna with the description of three new species of Macrobiotus Schultze, 1834. Tropical Zoology, 4, 167 - 178.", "Pilato, G., Napolitano, A. & Manicardi, E. (2000) The specific value of Macrobiotus coronatus de Barros, 1942, and description of two new species of the harmsworthi group (Eutardigrada). Bollettino delle sedute della Accademia gioenia di scienze naturali in Catania, 33, 103 - 120."]}