Halacarus todaroi Pepato & Silveira, 2013, sp. nov.

Halacarus todaroi sp. nov. (Figs. 3–4) Holotype: Female (UFMG-AC 1200178), from shell debris at a depth of 8 m near Itassucê Islet, Barequeçaba Beach (23 º 50 ' S, 45 º 27 ' W), 19 March 2007, coll. A. Todaro. Paratype: Male (UFMG-AC 1200177), from shell debris at a depth of 8 m near Itass...

Full description

Bibliographic Details
Main Authors: Pepato, Almir R., Silveira, Paulo Sergio Amorim Da
Format: Text
Language:unknown
Published: Zenodo 2013
Subjects:
Online Access:https://dx.doi.org/10.5281/zenodo.5620640
https://zenodo.org/record/5620640
id ftdatacite:10.5281/zenodo.5620640
record_format openpolar
institution Open Polar
collection DataCite Metadata Store (German National Library of Science and Technology)
op_collection_id ftdatacite
language unknown
topic Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Halacaridae
Halacarus
Halacarus todaroi
spellingShingle Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Halacaridae
Halacarus
Halacarus todaroi
Pepato, Almir R.
Silveira, Paulo Sergio Amorim Da
Halacarus todaroi Pepato & Silveira, 2013, sp. nov.
topic_facet Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Halacaridae
Halacarus
Halacarus todaroi
description Halacarus todaroi sp. nov. (Figs. 3–4) Holotype: Female (UFMG-AC 1200178), from shell debris at a depth of 8 m near Itassucê Islet, Barequeçaba Beach (23 º 50 ' S, 45 º 27 ' W), 19 March 2007, coll. A. Todaro. Paratype: Male (UFMG-AC 1200177), from shell debris at a depth of 8 m near Itassucê Islet, Barequeçaba Beach (23 º 50 ' S, 45 º 27 ' W), 25 August 2008, coll. A. Pepato. Description. Female : Idiosoma length 502, width 236. AD length 190, including the anterior triangular spine 34 μm long, width 207, with reticulate surface (Fig. 4 B). Ds- 1 on AD, at level 0.60 of AD, posterior to gp- 1. Gp- 1 at level 0.45 of AD. OC length 17, width 10, lacking corneae (Fig. 4 B). Ds- 2 to ds- 5 on membranous cuticle. Gp- 2 ventrally displaced, at level 0.38 of idiosoma length. Pore canaliculus on posterior corner of OC. Gp- 3 at level 0.45 of idiosoma length. Gp- 4 at level 0.72 of idiosoma. PD length 138, width 97. Adanal setae on the rear of PD, at same level as gp- 5. AE length 105, width 226, with three pairs of setae and without epimeral pores. PE with three ventral setae and one dorsal seta. Anterior pair of pgs placed on GA, apart from anterior edge of GO by 28. GA length 95, width 107. GO length 54, width 35, 41 μm from anterior edge of GA. A single pair of pgs close to GO on GA. Three pairs of sgs on genital sclerites, grouped 1: 2. Gnathosoma length 130, width 77. Rostrum length 66, equal to 0.51 of gnathosoma length. Trito- and basirostral setae on rostrum (Fig. 3 C). Legs with striated cuticle (Fig. 4 A). Leg chaetotaxy as follows: Leg I, 1, 2, 8 (2 S), 11 (2 S), 13 (4 S), 5 (2 S); leg II, 1, 4, 6, 8 (1 S), 10 (2 S, 1 B), 5; leg III, 2, 2, 4, 5, 8, 3; leg IV, 1, 2, 4, 5, 8, 3. Tarsus I with three dorsal and two ventral setae, three pairs of eupathidia as parambulacral setae, and setiform famulus and solenidion. Tarsus II with three dorsal and two ventral setae, two pairs of eupathidia and a setiform solenidion. Tarsi III-IV with a pair of parambulacral setae and three dorsal setae, without ventral setae. Length of telofemora, genua and tibiae of leg I, 122 μm, 111 μm, and 93 μm, respectively. Lateral claws without pecten, with a narrow accessory process. Median claw bidentate. Male: Idiosoma length 462, width 216; AD, length 172, width 111; OC length 16, width 8; PD length 103, width 100. Similar to female in most features, except for the characteristics of the genital area and plumose parambulacral setae on tarsus IV in the male. GA length 121, width 102. GO length 33, width 30, 70 μm from anterior margin of GA. 54 perigenital setae surrounding GO. Two pairs of distinct outlying setae beside GO. Subgenital setae on genital sclerites, grouped 2: 2. Spermatophorotype extending 18 μm beyond GO (Fig. 3 E). Etymology. The name is dedicated to Dr. Antonio Todaro, who gave one of the individuals to the first author, and for his relevant contributions to the knowledge of meiofauna. Remarks. Halacarus todaroi sp. nov. can be distinguished from congeners by the following set of characteristics: Absence of conspicuous sexual dimorphism concerning the extension of PD, which does not bear gp- 4 in either sex; corneae and gp- 3 lacking on OC, although this plate is present and bears a pore canaliculus at its posterior corner; absence of a platelet posterior to OC or on PD, no pgs anterior to GA in neither female nor male; leg epicuticle striated. Some of the characteristics listed above are unclear from the original description of Halacarus validus by Gimbel (1919) and the re-description by Newell (1984). However, H. validus clearly differs from the species described here in the narrow AD posterior to gp- 1, and ds- 1 and gp- 1 aligned. In H. todaroi sp. nov. , AD is broader on its posterior portion, and ds- 1 is posterior to gp- 1. Other species that share some features with this new species are Halacarus bisulcus Viets, 1927 and Halacarus propiquus (Viets, 1940). Halacarus propiquus , however, is discernible from the new species by the presence of ventral setae on tarsi III and IV, and epicuticle on femora most likely punctuate instead of striated (Newell, 1984); Halacarus bisulcus is also distinct from H. todaroi sp. nov. in the presence of combs on lateral claws of tarsi II and III, and pgs ordered in a single ring around GO and three to four pairs of outlying setae in the male (Green & Macquitty, 1987; Bartsch, 1980; Monniot, 1962), totaling 43 pgs according to Bartsch (1980, fig. 19) instead of two pairs of outlying setae and 58 pgs ordered in two rings in H. todaroi sp. nov. : Published as part of Pepato, Almir R. & Silveira, Paulo Sergio Amorim Da, 2013, Two new species of Halacarus (Acari, Prostigmata) from Brazil, pp. 591-600 in Zootaxa 3670 (4) on pages 597-599, DOI: 10.11646/zootaxa.3670.4.10, http://zenodo.org/record/217870 : {"references": ["Gimbel, O. (1919) Uber einige neue Halacariden. Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 36, 105 - 130.", "Newell, I. M. (1984) Biology of the Antartic Seas. XV Antarctic Halacaroidea. Antarctic Research Series, 40, 1 - 284.", "Viets, K. (1927) Die Halacaridae der Nordsee. Zeitschrift fur wissenschaftliche Zoologie, 130, 83 - 173.", "Viets, K. (1940) Meeresmilben aus der Adria (Halacaridae und Hydrachnellae, Acari). Archiv fur Naturgeschichte, 9, 1 - 135.", "Green J. & Macquitty M. (1987) Halacarid mites. Linnean Society of London / Estuarine and Brackish-Water Sciences Association & E. J. Brill / W, Backhuys, London, 178 pp.", "Bartsch, I. (1980) Halacaridae (Acari) aus der Bucht von Morlaix (Bretagne). Acarologia, 21, 34 - 45.", "Monniot, F. (1962) Recherches sur les graviers a Amphioxus de la region de Banyuls-sur-Mer. Vie et Milieu, 13, 231 - 322."]}
format Text
author Pepato, Almir R.
Silveira, Paulo Sergio Amorim Da
author_facet Pepato, Almir R.
Silveira, Paulo Sergio Amorim Da
author_sort Pepato, Almir R.
title Halacarus todaroi Pepato & Silveira, 2013, sp. nov.
title_short Halacarus todaroi Pepato & Silveira, 2013, sp. nov.
title_full Halacarus todaroi Pepato & Silveira, 2013, sp. nov.
title_fullStr Halacarus todaroi Pepato & Silveira, 2013, sp. nov.
title_full_unstemmed Halacarus todaroi Pepato & Silveira, 2013, sp. nov.
title_sort halacarus todaroi pepato & silveira, 2013, sp. nov.
publisher Zenodo
publishDate 2013
url https://dx.doi.org/10.5281/zenodo.5620640
https://zenodo.org/record/5620640
long_lat ENVELOPE(9.895,9.895,63.645,63.645)
ENVELOPE(-59.533,-59.533,-62.333,-62.333)
ENVELOPE(-79.150,-79.150,-73.483,-73.483)
geographic Antarctic
Seta
Newell
Combs
geographic_facet Antarctic
Seta
Newell
Combs
genre Antarc*
Antarctic
antartic*
genre_facet Antarc*
Antarctic
antartic*
op_relation http://zenodo.org/record/217870
http://publication.plazi.org/id/8A1EFF94FF89FFF9D24E0D71FF94CE42
http://zoobank.org/DAEFA201-93E5-4109-8C11-AA7AD84FDC70
https://zenodo.org/communities/biosyslit
https://dx.doi.org/10.11646/zootaxa.3670.4.10
http://zenodo.org/record/217870
http://publication.plazi.org/id/8A1EFF94FF89FFF9D24E0D71FF94CE42
https://dx.doi.org/10.5281/zenodo.217873
https://dx.doi.org/10.5281/zenodo.217874
http://zoobank.org/DAEFA201-93E5-4109-8C11-AA7AD84FDC70
https://dx.doi.org/10.5281/zenodo.5620641
https://zenodo.org/communities/biosyslit
op_rights Open Access
info:eu-repo/semantics/openAccess
op_doi https://doi.org/10.5281/zenodo.5620640
https://doi.org/10.11646/zootaxa.3670.4.10
https://doi.org/10.5281/zenodo.217873
https://doi.org/10.5281/zenodo.217874
https://doi.org/10.5281/zenodo.5620641
_version_ 1766074612147290112
spelling ftdatacite:10.5281/zenodo.5620640 2023-05-15T13:36:07+02:00 Halacarus todaroi Pepato & Silveira, 2013, sp. nov. Pepato, Almir R. Silveira, Paulo Sergio Amorim Da 2013 https://dx.doi.org/10.5281/zenodo.5620640 https://zenodo.org/record/5620640 unknown Zenodo http://zenodo.org/record/217870 http://publication.plazi.org/id/8A1EFF94FF89FFF9D24E0D71FF94CE42 http://zoobank.org/DAEFA201-93E5-4109-8C11-AA7AD84FDC70 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/zootaxa.3670.4.10 http://zenodo.org/record/217870 http://publication.plazi.org/id/8A1EFF94FF89FFF9D24E0D71FF94CE42 https://dx.doi.org/10.5281/zenodo.217873 https://dx.doi.org/10.5281/zenodo.217874 http://zoobank.org/DAEFA201-93E5-4109-8C11-AA7AD84FDC70 https://dx.doi.org/10.5281/zenodo.5620641 https://zenodo.org/communities/biosyslit Open Access info:eu-repo/semantics/openAccess Biodiversity Taxonomy Animalia Arthropoda Arachnida Trombidiformes Halacaridae Halacarus Halacarus todaroi Taxonomic treatment article-journal Text ScholarlyArticle 2013 ftdatacite https://doi.org/10.5281/zenodo.5620640 https://doi.org/10.11646/zootaxa.3670.4.10 https://doi.org/10.5281/zenodo.217873 https://doi.org/10.5281/zenodo.217874 https://doi.org/10.5281/zenodo.5620641 2022-02-08T12:40:44Z Halacarus todaroi sp. nov. (Figs. 3–4) Holotype: Female (UFMG-AC 1200178), from shell debris at a depth of 8 m near Itassucê Islet, Barequeçaba Beach (23 º 50 ' S, 45 º 27 ' W), 19 March 2007, coll. A. Todaro. Paratype: Male (UFMG-AC 1200177), from shell debris at a depth of 8 m near Itassucê Islet, Barequeçaba Beach (23 º 50 ' S, 45 º 27 ' W), 25 August 2008, coll. A. Pepato. Description. Female : Idiosoma length 502, width 236. AD length 190, including the anterior triangular spine 34 μm long, width 207, with reticulate surface (Fig. 4 B). Ds- 1 on AD, at level 0.60 of AD, posterior to gp- 1. Gp- 1 at level 0.45 of AD. OC length 17, width 10, lacking corneae (Fig. 4 B). Ds- 2 to ds- 5 on membranous cuticle. Gp- 2 ventrally displaced, at level 0.38 of idiosoma length. Pore canaliculus on posterior corner of OC. Gp- 3 at level 0.45 of idiosoma length. Gp- 4 at level 0.72 of idiosoma. PD length 138, width 97. Adanal setae on the rear of PD, at same level as gp- 5. AE length 105, width 226, with three pairs of setae and without epimeral pores. PE with three ventral setae and one dorsal seta. Anterior pair of pgs placed on GA, apart from anterior edge of GO by 28. GA length 95, width 107. GO length 54, width 35, 41 μm from anterior edge of GA. A single pair of pgs close to GO on GA. Three pairs of sgs on genital sclerites, grouped 1: 2. Gnathosoma length 130, width 77. Rostrum length 66, equal to 0.51 of gnathosoma length. Trito- and basirostral setae on rostrum (Fig. 3 C). Legs with striated cuticle (Fig. 4 A). Leg chaetotaxy as follows: Leg I, 1, 2, 8 (2 S), 11 (2 S), 13 (4 S), 5 (2 S); leg II, 1, 4, 6, 8 (1 S), 10 (2 S, 1 B), 5; leg III, 2, 2, 4, 5, 8, 3; leg IV, 1, 2, 4, 5, 8, 3. Tarsus I with three dorsal and two ventral setae, three pairs of eupathidia as parambulacral setae, and setiform famulus and solenidion. Tarsus II with three dorsal and two ventral setae, two pairs of eupathidia and a setiform solenidion. Tarsi III-IV with a pair of parambulacral setae and three dorsal setae, without ventral setae. Length of telofemora, genua and tibiae of leg I, 122 μm, 111 μm, and 93 μm, respectively. Lateral claws without pecten, with a narrow accessory process. Median claw bidentate. Male: Idiosoma length 462, width 216; AD, length 172, width 111; OC length 16, width 8; PD length 103, width 100. Similar to female in most features, except for the characteristics of the genital area and plumose parambulacral setae on tarsus IV in the male. GA length 121, width 102. GO length 33, width 30, 70 μm from anterior margin of GA. 54 perigenital setae surrounding GO. Two pairs of distinct outlying setae beside GO. Subgenital setae on genital sclerites, grouped 2: 2. Spermatophorotype extending 18 μm beyond GO (Fig. 3 E). Etymology. The name is dedicated to Dr. Antonio Todaro, who gave one of the individuals to the first author, and for his relevant contributions to the knowledge of meiofauna. Remarks. Halacarus todaroi sp. nov. can be distinguished from congeners by the following set of characteristics: Absence of conspicuous sexual dimorphism concerning the extension of PD, which does not bear gp- 4 in either sex; corneae and gp- 3 lacking on OC, although this plate is present and bears a pore canaliculus at its posterior corner; absence of a platelet posterior to OC or on PD, no pgs anterior to GA in neither female nor male; leg epicuticle striated. Some of the characteristics listed above are unclear from the original description of Halacarus validus by Gimbel (1919) and the re-description by Newell (1984). However, H. validus clearly differs from the species described here in the narrow AD posterior to gp- 1, and ds- 1 and gp- 1 aligned. In H. todaroi sp. nov. , AD is broader on its posterior portion, and ds- 1 is posterior to gp- 1. Other species that share some features with this new species are Halacarus bisulcus Viets, 1927 and Halacarus propiquus (Viets, 1940). Halacarus propiquus , however, is discernible from the new species by the presence of ventral setae on tarsi III and IV, and epicuticle on femora most likely punctuate instead of striated (Newell, 1984); Halacarus bisulcus is also distinct from H. todaroi sp. nov. in the presence of combs on lateral claws of tarsi II and III, and pgs ordered in a single ring around GO and three to four pairs of outlying setae in the male (Green & Macquitty, 1987; Bartsch, 1980; Monniot, 1962), totaling 43 pgs according to Bartsch (1980, fig. 19) instead of two pairs of outlying setae and 58 pgs ordered in two rings in H. todaroi sp. nov. : Published as part of Pepato, Almir R. & Silveira, Paulo Sergio Amorim Da, 2013, Two new species of Halacarus (Acari, Prostigmata) from Brazil, pp. 591-600 in Zootaxa 3670 (4) on pages 597-599, DOI: 10.11646/zootaxa.3670.4.10, http://zenodo.org/record/217870 : {"references": ["Gimbel, O. (1919) Uber einige neue Halacariden. Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 36, 105 - 130.", "Newell, I. M. (1984) Biology of the Antartic Seas. XV Antarctic Halacaroidea. Antarctic Research Series, 40, 1 - 284.", "Viets, K. (1927) Die Halacaridae der Nordsee. Zeitschrift fur wissenschaftliche Zoologie, 130, 83 - 173.", "Viets, K. (1940) Meeresmilben aus der Adria (Halacaridae und Hydrachnellae, Acari). Archiv fur Naturgeschichte, 9, 1 - 135.", "Green J. & Macquitty M. (1987) Halacarid mites. Linnean Society of London / Estuarine and Brackish-Water Sciences Association & E. J. Brill / W, Backhuys, London, 178 pp.", "Bartsch, I. (1980) Halacaridae (Acari) aus der Bucht von Morlaix (Bretagne). Acarologia, 21, 34 - 45.", "Monniot, F. (1962) Recherches sur les graviers a Amphioxus de la region de Banyuls-sur-Mer. Vie et Milieu, 13, 231 - 322."]} Text Antarc* Antarctic antartic* DataCite Metadata Store (German National Library of Science and Technology) Antarctic Seta ENVELOPE(9.895,9.895,63.645,63.645) Newell ENVELOPE(-59.533,-59.533,-62.333,-62.333) Combs ENVELOPE(-79.150,-79.150,-73.483,-73.483)