Isohypsibius condorcanquii, Kaczmarek, Łukasz, Cytan, Joanna, Zawierucha, Krzysztof, Diduszko, Dawid & Michalczyk, Łukasz, 2014
publication ID |
https://doi.org/ 10.11646/zootaxa.3790.2.5 |
publication LSID |
lsid:zoobank.org:pub:564A86FD-557A-43CA-B015-6BA767E281F9 |
DOI |
https://doi.org/10.5281/zenodo.6134303 |
persistent identifier |
https://treatment.plazi.org/id/03CAAB73-FFC5-8770-FF43-FE64FD6166BC |
treatment provided by |
Plazi |
scientific name |
Isohypsibius condorcanquii |
status |
sp. nov. |
Isohypsibius condorcanquii sp. nov.
( Table 1 View TABLE 1 , Figs 1–5 View FIGURES 1 – 5 )
Localities and number of specimens: II (8). Material examined. Holotype (slide PE2002/2), seven paratypes (animals) (slides: PE2002/6, PE2002/8, PE2002/12) and one simplex (slide PE2002/5)
Description (measurements and statistics in Table 1 View TABLE 1 ). Animals: Body transparent/white, eyes absent (in specimens mounted in Hoyer’s medium ( Fig. 1 View FIGURES 1 – 5 ). Dorsal cuticle, including dorso-caudal portion of legs IV, covered with small polygonal tubercles 0.8–1.2 Μm in diameter ( Fig. 2 View FIGURES 1 – 5 ). Spaces between the tubercles form a reticulum of grooves. Ventral cuticle smooth (i.e. without sculpturing). Gibbosities and cuticular pores absent.
Bucco-pharyngeal apparatus of the Isohypsibius type, without the ventral lamina ( Fig. 3 View FIGURES 1 – 5 ). Peribuccal lamellae absent. Oral cavity armature composed of two clearly visible round ventral teeth (sometimes a third, weakly developed tooth is also present) ( Fig. 3 View FIGURES 1 – 5 , insert). Pharyngeal bulb with long, triangular apophyses and with three granular macroplacoids (all without constrictions). Macroplacoid length sequence 1<2<3. Microplacoid and septulum absent.
Claws of the Isohypsibius type, similar in size and shape on all legs ( Figs 4–5 View FIGURES 1 – 5 ). All primary branches with minute accessory points (sometimes not visible in poorly preserved/oriented specimens). Proper lunules at the bases of external claws absent; but in some specimens a small, smooth areola is visible under the claw. Bars and other cuticular structures on legs absent.
Eggs: Unknown.
Remarks. In some specimens, smooth and poorly visible areolae can be seen under external and internal claws (appearing as poorly outlined lunules). Thus, the presence or absence of lunules in this species could be difficult to determine, especially when only small number of specimens are available for examination.
Etymology. The new species is named in honour of Gabriel Condorcanqui (Tupac Amaru II), an indigenous Peruvian leader of a 1780 uprising against the Spanish colonisers.
Type locality. 13°10'S; 72°33'W, ca. 2,450 m asl: Cusco Region, Machu Picchu, moss from rock, 27.10.2010, coll. Dawid Diduszko.
Type depositories. Holotype (slide PE2002/2), seven paratypes (slides: PE2002/6, PE2002/8, PE2002/12 and one exuvium (PE2002/5) are deposited at the Department of Animal Taxonomy and Ecology, Institute of Environmental Biology, A. Mickiewicz University in Poznań, Umultowska 89, 61–614 Poznań ( Poland).
Differential diagnosis. By having three macroplacoids in the pharynx and dorsal cuticle covered with small individual structures such as tubercles, granules or thickenings, the new species is most similar to the following species, but differs from:
Isohypsibius asper ( Murray, 1906) View in CoL , known from the Antarctic and the Palearctic ( McInnes 1994), by: a different type of cuticular sculpture (polygonal tubercles in the new species vs. hemispherical thickenings in I. asper View in CoL ), smaller claws IV, and the absence of eyes.
Isohypsibius baldii ( Ramazzotti, 1945) View in CoL , known only from Italy and Faroe Islands ( Ramazzotti 1945, Trygvadóttir & Kristensen 2013), by the absence of ventral sculpture, a different macroplacoid length sequence (1<2<3 in the new species vs. 2<1<3 in I. baldii View in CoL ), and differently shaped macroplacoids (granules in the new species vs. rods in I. baldii View in CoL ).
Isohypsibius damxungensis Yang, 2007 , known only from China ( Yang 2007), by: a different type of the cuticular sculpture (polygonal tubercles in the new species vs. rectangular or round granules of different sizes in I. damxungensis ), a slightly smaller body size (131–332 Μm in the new species vs. 324–399 Μm in I. damxungensis ), and the absence of eyes.
Isohypsibius granulifer granulifer Thulin, 1928 View in CoL , known from the Holarctic and the Neotropic ( McInnes 1994), by: a different type of cuticular sculpture (polygonal tubercles in the new species vs. irregularly distributed thickenings in I. g. granulifer View in CoL ), and by a slightly different macroplacoid length sequence at the population level (1<2<3 in the new species vs. 1≤2<3 in I. g. granulifer View in CoL ).
Isohypsibius granulifer koreanensis ( Iharos, 1971) View in CoL , known only from North Korea ( Iharos 1971), by: the absence of ventral sculpture and by a different type of dorsal cuticular sculpture (polygonal tubercles in the new species vs. irregularly distributed granules in I. g. koreanensis View in CoL ).
Isohypsibius kenodontis Kendall-Fite & Nelson, 1996 View in CoL , known only from the USA ( Kendall-Fite & Nelson 1996), by: a different type of the cuticular sculpture (polygonal tubercles in the new species vs. partially fused minute granules forming a reticulum in I. kenodontis View in CoL ), a different macroplacoid length sequence (1<2<3 in the new species vs. 2<1<3 in I. kenodontis View in CoL ), the presence of the oral cavity armature, and by the absence of eyes.
Isohypsibius ladogensis Tumanov, 2003 View in CoL , known only from Russia ( Tumanov 2003), by: a different type of cuticular sculpture (polygonal tubercles in the new species vs. indistinct irregular tubercles fused into a reticulum in I. ladogensis View in CoL ), a different macroplacoid length sequence (1<2<3 in the new species vs. 2<1<3 in I. ladogensis View in CoL ), and by the absence of thin cuticular bars under claws I–III.
Superfamily: Macrobiotoidea Thulin, 1928 in Marley et al. 2011
TABLE 1. Measurements [in µm] and pt values of selected morphological structures of Isohypsibius condorcanquii sp. nov. mounted in Hoyer’s medium (N—number of specimens / structures measured, RANGE refers to the smallest and the largest structure among all measured specimens; SD—standard deviation,? — trait oriented unsuitably for measurement).
CHARACTER | N | RANGE | MEAN | SD Holotype |
---|---|---|---|---|
µm pt | µm pt | µm pt µm pt | ||
Body length | 4 | 131 – 332 699 – 1056 | 210 858 | 87 148 210 850 |
Buccopharyngeal tube | ||||
Buccal tube length | 6 | 18.8 – 32.9 – | 25.0 – | 5.9 – 24.7 – |
Stylet support insertion point | 6 | 13.5 – 23.0 69.9 – 73.4 | 18.0 72.1 | 4.1 1.3 17.8 72.1 |
Buccal tube external width | 6 | 2.1 – 3.8 9.6 – 11.6 | 2.7 10.6 | 0.7 0.8 2.5 10.1 |
Buccal tube internal width | 6 | 0.7 – 1.8 3.7 – 5.7 | 1.2 4.7 | 0.5 0.8 1.1 4.5 |
Placoid lengths | ||||
Macroplacoid 1 | 6 | 1.2 – 2.6 6.1 – 7.9 | 1.8 7.0 | 0.6 0.7 1.5 6,1 |
Macroplacoid 2 | 6 | 1.4 – 3.3 6.9 – 10.0 | 2.1 8.3 | 0.8 1.1 2.2 8.9 |
Macroplacoid 3 | 6 | 1.8 – 3.8 8.3 – 12.1 | 2.6 10.0 | 0.9 1.4 2.6 10.5 |
Macroplacoid row | 6 | 5.4 – 11.0 26.6 – 34.1 | 7.7 30.1 | 2.6 3.1 7.5 30.4 |
Claw 1 lengths | ||||
External base | 3 | 4.1 – 7.1 16.6 – 21.7 | 6.0 19.9 | 1.7 2.9 4.1 16.6 |
External primary branch | 3 | 5.4 – 12.2 26.6 – 37.1 | 9.7 33.3 | 3.7 5.8? ? |
External secondary branch | 1 | 6.1 – 6.1 24.7 – 24.7 | 6.1 24.7 | ? ? 6.1 24.7 |
Internal base Internal primary branch | 5 5 | 3.4 – 5.2 15.4 – 19.1 5.6 – 10.1 21.6 – 35.1 | 4.0 17.1 7.1 29.1 | 0.7 1.4 3.8 15.4 1.7 5.4? ? |
Internal secondary branch | 5 | 3.6 – 6.6 17.7 – 23.4 | 4.9 21.0 | 1.2 2.4 5.7 23.1 |
Claw 2 lengths | ||||
External base | 3 | 4.2 – 6.3 17.0 – 21.6 | 5.1 19.5 | 1.1 2.3 4.2 17.0 |
External primary branch | 4 | 5.5 – 12.5 27.1 – 39.8 | 8.4 33.2 | 3.1 5.5 8.7 35.2 |
External secondary branch | 2 | 4.5 – 6.9 20.6 – 27.9 | 5.7 24.3 | 1.7 5.2 6.9 27.9 |
Internal base Internal primary branch | 6 5 | 3.3 – 8.1 15.4 – 24.6 5.6 – 10.5 25.7 – 36.2 | 4.7 18.4 7.9 31.4 | 1.8 3.5 3.8 15.4 2.3 3.8? ? |
Internal secondary branch | 5 | 4.2 – 7.7 19.3 – 25.0 | 5.8 22.5 | 1.4 2.6 5.8 23.5 |
Claw 3 lengths | ||||
External base | 2 | 3.7 – 4.3 17.0 – 17.4 | 4.0 17.2 | 0.4 0.3 4.3 17.4 |
External primary branch | 3 | 6.9 – 11.1 31.7 – 35.4 | 8.6 33.0 | 2.2 2.0 7.9 32.0 |
External secondary branch | 3 | 4.1 – 11.1 18.8 – 35.4 | 7.3 27.0 | 3.5 8.3 6.6 26.7 |
Internal base | 3 | 3.7 – 6.4 17.0 – 19.5 | 4.8 17.8 | 1.4 1.4 4.2 17.0 |
Internal primary branch | 4 | 5.6 – 11.0 25.7 – 33.4 | 8.8 31.2 | 2.5 3.7 8.0 32.4 |
Internal secondary branch | 4 | 4.0 – 7.5 18.3 – 23.9 | 6.1 21.8 | 1.6 2.4 5.7 23.1 |
Claw 4 lengths | ||||
Anterior base | 5 | 2.6 – 5.2 7.9 – 19.8 | 4.0 15.9 | 1.0 4.6 4.9 19.8 |
Anterior primary branch | 6 | 4.1 – 10.2 12.5 – 35.6 | 6.9 28.4 | 2.2 8.3 8.8 35.6 |
Anterior secondary branch | 5 | 3.1 – 8.1 9.4 – 25.8 | 4.9 19.6 | 2.0 6.1 5.4 21.9 |
Posterior base | 5 | 3.1 – 6.7 9.4 – 23.5 | 4.5 17.9 | 1.6 5.5 5.8 23.5 |
Posterior primary branch | 6 | 5.1 – 13.2 15.5 – 42.0 | 7.8 31.8 | 2.8 9.3 8.0 32.4 |
Posterior secondary branch | 6 | 3.6 – 7.1 10.9 – 24.6 | 5.1 21.1 | 1.2 5.0 5.6 22.7 |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
Kingdom |
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Phylum |
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Class |
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Order |
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Family |
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Genus |
Isohypsibius condorcanquii
Kaczmarek, Łukasz, Cytan, Joanna, Zawierucha, Krzysztof, Diduszko, Dawid & Michalczyk, Łukasz 2014 |
Isohypsibius damxungensis
Yang 2007 |
Isohypsibius ladogensis
Tumanov 2003 |
Isohypsibius kenodontis
Kendall-Fite 1996 |
Isohypsibius granulifer koreanensis (
Iharos 1971 |
Isohypsibius baldii (
Ramazzotti 1945 |
Isohypsibius granulifer granulifer
Thulin 1928 |
Macrobiotidae
Thulin 1928 |
Isohypsibius asper (
Murray 1906 |
Macrobiotus
C.A.S. Schultze 1834 |