Abstract
Fifteen moss samples collected in the Sophia Province (Bulgaria) were examined. In these samples six eutardigrade species were found: Hypsibius convergens, Isohypsibius prosostomus, Macrobiotus binieki sp. nov., M. hufelandi, M. pallarii and Ramazzottius oberhaeuseri. The new species belongs to the Macrobiotus harmsworthi group and differs from the most similar M. australis, M. coronatus, M. patiens, M. pseudocoronatus, M. radiatus, M. rigidus and M. simulans mainly by: egg processes covered by small bubbles (not smooth or reticulated), egg shell between processes covered by wrinkles not dots or stripes forming a large radiate crown, a higher number of processes on egg circumference and some morphometric characters of adults. In this paper a key to all species of the harmsworthi group is also given.
References
Barros, R. de (1942) Tardigrados de Estado de Sao Paulo, Brasil. II. Gênero Macrobiotus. Revista Brasileira de Biologia, 2, 373–386.
Binda, M.G. & Pilato, G. (1987) Tardigrada dell'Africa. V. Notizie sui Tardigradi del Nord-Africa e descrizione della nuove specie Macrobiotus diffusus. Animalia, 14, 177–191.
Binda, M.G. & Pilato, G. (1994) Macrobiotus mottai, nuova specie di eutardigrado dell’Antartide. Animalia, 21, 53–56.
Binda, M.G. & Pilato, G. (1999) Macrobiotus erminiae, new species of eutardigrade from southern Patagonia and Tierra del Fuego. Entomologische Mitteilungen aus dem Zoologischen Museum Hamburg, 13, 151–158.
Biserov, V.I. (1998) Tardigrades of the Caucasus with a taxonomic analysis of the genus Ramazzottius (Parachela: Hypsibiidae). Zoologischer Anzeiger, 236, 139–159.
Bois-Reymond Marcus, E. du, (1944) Sobre tardigrados Brasileiros. Comunicaciones Zoologicas del Museo de Historia Natural de Montevideo, 1, 1–19.
Dastych, H. (1984) The Tardigrada from Antarctica with description of several new species. Acta Zoologica Cracoviensia, 27, 377–436.
Dastych, H. (1985) West Spitsbergen Tardigrada. Acta Zoologica Cracoviensia, 28, 169–214.
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
Doyère, M.L. (1840) Mémoire sur les Tardigrades. Annales des sciences naturelles, Serie 2, 14, 269–361.
Horning, D., Schuster, R. & Grigarick, A. (1978) Tardigrada of New Zealand. New Zealand Journal of Zoology, 5, 185–280.
Iharos, G. (1961) Grundlage der tardigradenfauna Bulgariens, Acta Zoologica Academiae Scientiarum Hungaricae, 7, 111–118.
Iharos, G. (1973a) Neuere Daten zur Kenntnis der Tardigraden-Fauna von Neuguinea. Opuscula Zoologica (Budapest), 11, 65–73.
Iharos, G. (1973b) Angaben zur geographischen Verbreitung der Tardigraden, Opuscula Zoologica, Budapest, 12, 73–86.
Iharos, G. (1982) Tardigradologische Notizen. I., Miscellanea Zoologica Hungarica, 1, 85–90.
Kaczmarek, Ł. & Michalczyk, Ł. (2009) Two new species of Macrobiotidae, Macrobiotus szeptyckii (harmsworthi group) and Macrobiotus kazmierskii (hufelandi group) from Argentina. Acta Zoologica Cracoviensia, 52B, 87–99.
Kaczmarek, Ł. & Michalczyk, Ł. & Degma, P. (2007) Description of a new tardigrade, Macrobiotus barbarae (Eutardigrada: Macrobiotidae) from the Dominican Republic. Annales Zoologici, 57(3), 363–369.
Maucci, W. (1954) Tardigradi nuovi della fauna Italiana. Atti Società Italiana di Scienze Naturali Museo Storia Naturale Milano, 93, 576–585.
Maucci, W. (1991) Due nuove specie di tardigradi muscicoli della Spagna. Bollettino del Museo Civico di Storia Naturale di Verona, 15, 257–264.
Michalczyk, Ł. & Kaczmarek, Ł. (2003) A description of the new tardigrade Macrobiotus reinhardti (Eutardigrada: Macrobiotidae, harmsworthi group) with some remarks on the oral cavity armature within the genus Macrobiotus Schultze. Zootaxa, 331, 1–24.
McInnes, S.J. (1991) Notes on tardigrades from the Pyrenees, including one new species. Pedobiologia, 35, 11–26.
McInnes, S.J. (1994) Zoogeographic distribution of terrestrial/freshwater tardigrades from current literature. Journal of Natural History, 28, 257–352.
Murray, J. (1907) Arctic Tardigrada collected by Wm. S. Bruce. Transactions of the Royal Society of Edinburgh, 45, 669–681.
Murray, J. (1910) Tardigrada. British Antarctic Expedition 1907–9. Reports on the Scientific Investigations. Volume 1 Biology, (Part V), 81–185.
Pilato, G. (1972) Structure, intraspecific variability and systematic value of the buccal armature of Eutardigrades. Journal of Zoological Systematics and Evolutionary Research, 10(1), 65–78.
Pilato, G. (1974) Tre nouve specie di Tardigradi muscicoli di Cina. Animalia, 1, 59–68.
Pilato, G. (1981) Analisi di nuovi caratteri nello studio degli Eutardigradi. Animalia, 8, 51–57.
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.
Pilato, G. & Binda, M.G. (2001) Biogeography and Limno-terrestrial Tardigrades: Are they truly incompatible binomials? Zoologischen Anzeiger, 240, 511–516.
Pilato, G. & Claxton, S.K. (1988) Tardigrades from Australia. 1. Macrobiotus hieronimi and Minibiotus maculartus, two new species of eutardigrades. Animalia, 15 83–89.
Pilato, G. & D’Urso, V. (1976) Contributo alla conoscenza dei Tardigradi d`Australia. Animalia, 3, 135–145.
Pilato, G. & Lisi, O. (2006a) Macrobiotus rigidus sp nov., new species of eutardigrade from New Zealand. Zootaxa, 1109, 49–55.
Pilato, G. & Lisi, O. (2006b) Notes on some tardigrades from southern Mexico with description of three new species. Zootaxa, 1236, 53–68.
Pilato, G. & Lisi, O. (2009) Tardigrades of the Seychelles Islands, with the description of three new species. Zootaxa, 2124, 1–20.
Pilato, G. & Patanè, 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. & Sperlinga, G. (1975) Tardigradi muscicoli di Sardegna. Animalia, 3, 243–258.
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., 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. & Lisi, O. (2006) Three new species of eutardigrades from the Seychelles. New Zealand Journal of Zoology, 33, 39–48.
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.
Ramazzotti, G. (1962) Tardigradi del Cile, con descrizione di quattro nuove specie e di una varietá. Atti Società Italiana di Scienze Naturali Museo Storia Naturale Milano, 101, 275–287.
Ramazzotti, G. & Maucci, W. (1983) Il Phylum Tardigrada. Memorie dell’Istituto Italiano di Idrobiologia, 41, 1–1012.
Rossi, G., Claps, M. & Ardohain, D. (2009) Tardigrades from northwestern Patagonia (Neuquén Province, Argentina) with the description of three new species. Zootaxa, 2095, 21–36.
Schultze, C.A.S. (1834) Macrobiotus hufelandi animal e crustaceorum classe novum reviviscendi post diuturnam asphyxiam et ariditatem potens, etc. 8, C. Curths, Berlin.
Thulin, G. (1928) Über die Phylogenie und System der Tardigraden. Hereditas, Lund, 11, 207–266.
Tumanov, D.V. (2005) Two new species of Macrobiotus (Eutardigrada, Macrobiotidae) from Tien Shan (Kirghizia), with notes on Macrobiotus tenuis group. Zootaxa, 1043, 33–46.
Urbanowicz, C. (1925) Sur la variabilité de “Macrobiotus oberhaeuseri”. Bulletin de Biologie France-Beligique, Paris, 59, 124–142.