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Two cephalic papillae positioned laterally. Six peribuccal papillae (ventral papilla smallest) and six peribuccal lamellae (of equal size) around the mouth opening present. Body brownish (in live specimens) or transparent (in fixed specimens) with eyes (visible before and after mounting in Hoyer’s medium - 90% of fixed specimens had eyes). (measurements and statistics in Table 1). are deposited in the Tardigrada Register under Raw data underlying the description of Milnesium berladnicorum sp. 1.1 template available from the Tardigrada Register ( Michalczyk and Kaczmarek 2013). Morphometric data were handled using the '' Apochela'' ver. Ramazzottius specimens were verified and identified using the key to the World Tardigrada ( Ramazzotti and Maucci 1983), a more modern key to the genus Ramazzottius ( Biserov 1998), and remarks discussed by Pilato et al.
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2013) or are based on direct examination of type material (holotype and paratypes of Milnesium beasleyi Kaczmarek et al. 2004 Tumanov 2006 Kaczmarek and Michalczyk 2007 Wallendorf and Miller 2009 Kaczmarek et al. The pt values are always provided in italics in order to differentiate them from length values.Ĭharacteristics and measurements of the species used in the differential diagnosis are given according to the original descriptions ( Ramazzotti 1962 Pilato et al. Other morphometric data were calculated using the pt ratio: the ratio of the length of a given structure to the length of the buccal tube, expressed as a percentage ( Pilato 1981). Subsequently, claw configuration is described according to Michalczyk et al. The buccal tube and claws characteristics were measured according to Tumanov (2006) and Michalczyk et al. īody length was measured from the mouth to the end of the body excluding the hind legs.
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All measurements (determined with QuickPhoto Camera 2.3) are given in micrometers. Observations, measurements and photomicrographs were taken using Phase Contrast Microscopy (PCM) (Olympus BX41 with digital camera ARTCAM-300Mi). Additionally, 55 specimens of Ramazzottius oberhaeuseri (Doyère, 1840) were found in the same sample, including 9 specimens in simplex stage and 9 eggs.Īll specimens were extracted according to Dastych (1980, 1985) and mounted on microscope slides in Hoyer’s medium. In a lichen sample collected by the first author in Bârlad town in July, 2013, 53 individuals and two exuvia (with 16 eggs) of the new species were found. In this paper a new species of the genus Milnesium is described and illustrated. Until now in Romania only three Milnesium species have been reported: Milnesium tardigradum sensu lato Doyère, 1840, Milnesium granulatum (Ramazzotti, 1962) and Milnesium asiaticum Tumanov, 2006, but all early records of the first species should be verified ( Michalczyk et al. Taking into consideration that some morphological characters were omitted in older records of Milnesium specimens, all such records should be verified ( Michalczyk et al. 2012a, 2012b) new records and species have been reported from various localities (e.g. Since the genus was recently re-described ( Michalczyk et al. Species from the genus Milnesium Doyère, 1840 are known from many localities throughout the world, from the Antarctic through tropical and temperate zones to the Arctic regions (e.g. In fact, in the light of modern taxonomy, only 127 tardigrades species are consider to be present in Romania (in 26 of 41 Romanian counties) ( Ciobanu et al. Even though during this period more than 150 taxa (species and subspecies) were reported for this region ( Rudescu 1964), many of them are now considered as non-valid, have been synonymized, or require confirmation. In Romania, studies on tardigrades were rather fragmentary and with a significant discontinuity in time (last 40 years).