A new genus and species of Loricifera (Nanaloricida: Pliciloricidae) from the deep waters of Japan

Fujimoto, Shinta; Yamasaki, Hiroshi; Ohtsuka, Susumu; Kristensen, Reinhardt Møbjerg

doi:10.1007/s12526-020-01130-3

Cited by 5 publications

(2 citation statements)

References 24 publications

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“…16]. The phylum is represented by a single order, Nanaloricida, and currently comprises three families, Nanaloricidae, Pliciloricidae and Urnaloricidae, harboring 42 described species (including the three new nanaloricid species described herein) [8][9][10][11][12][13][14]. In addition, the so-called Shira-larva, assigned to its own species of uncertain placement, currently resides outside the three loriciferan families [25].…”

Section: Final Remarksmentioning

confidence: 99%

“…From this pioneering investigation a single species was described, Nanaloricus mysticus Kristensen, 1983, which was accommodated in the first loriciferan family to be proposed, Nanaloricidae Kristensen, 1983. Since then, 40 loriciferan species have been described from several locations worldwide and accommodated in this family or in one of the two other families described later, Pliciloricidae Higgins and Kristensen, 1986 and Urnaloricidae Heiner and Kristensen, 2009 [9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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New records on the rich loriciferan fauna of Trezen ar Skoden (Roscoff, France): Description of two new species of Nanaloricus and the new genus Scutiloricus

2021

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Loricifera is a phylum of microscopic animals that inhabit marine environments worldwide. Named after their conspicuous and protective lorica, the phylum was first described from Roscoff (France) in 1983 and, hitherto, it contains only 40 species. Based on data collected from Roscoff during the past four decades, we here describe two new species of Nanaloricus, namely Nanaloricus valdemari sp. nov. and Nanaloricus mathildeae sp. nov., as well as a new genus and species, Scutiloricus hugoi gen. et sp. nov. Adults of N. valdemari sp. nov. are distinguished by a pair of unique cuticular ridges, here referred to as longitudinal stripes, spanning laterally along the anterior two thirds of the dorsal lorical plate. N. mathildeae sp. nov. is characterized by strong sexual dimorphism. Specifically, the branches composing the multiform male clavoscalids are much broader as compared to other Nanaloricus species. The two new Nanaloricus species are both characterized by unique sensory organs associated with the double trichoscalids. The size and exact position of these organs differ between the two species. Adults of Scutiloricus hugoi gen. et sp. nov. are characterized by, among other features, a square lorica composed of six cuticular plates with a total of 14 anterior spikes, of which 12 have transverse cuticular ridges and thus appear fenestrated; laterodorsal flosculi arranged linearly; a posterior lorical region characterized by an anal field with a small anal cone flanked by a pair of spurs. Notably, mature females are characterized by a pair of seminal receptacles, a character not previously reported in Loricifera. We discuss the new findings and compare N. valdemari sp. nov. and N. mathildeae sp.nov. with other species assigned to genus Nanaloricus. The distinguishing features of Scutiloricus hugoi gen. et sp. nov. are discussed from a comparative perspective with the other genera of family Nanaloricidae.

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Section: Final Remarksmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New records on the rich loriciferan fauna of Trezen ar Skoden (Roscoff, France): Description of two new species of Nanaloricus and the new genus Scutiloricus

2021

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A new Loriciferan, Scaberiloricus samba gen. et sp. nov., links the Higgins larva and the aberrant Shira larva

Sørensen,

Herranz,

Neves

et al. 2023

Org Divers Evol

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A new genus and species of Loricifera, Scaberiloricus samba gen. et sp. nov., is described from the continental shelf and slope off Rio de Janeiro, Brazil. Adult morphology remains unknown for the new entity, but information is available from three different Higgins larval instars. The Higgins larva of the new species is characterised by a bulbous head and a slender, elongate trunk, separated by a constriction behind the head. The cuticle of the thorax and the posterior part of the head is characterised by numerous longitudinal zigzag folds. The new species and genus shows greatest morphological resemblance with Wataloricus japonicus, and a phylogenetic analysis based on Higgins larval morphological characters suggests that Scaberiloricus gen. nov., Wataloricus, Tenuiloricus, and Patuloricus form a monophyletic group within Pliciloricidae. The analysis furthermore suggests that the Higgins larvae of Scaberiloricus gen. nov. and Wataloricus represent transitional, evolutionary stages towards the highly aberrant Shira larvae, found in species of Tenuiloricus and Patuloricus.

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A new genus and species of Nanaloricidae (Loricifera: Nanaloricida) from the Clarion-Clipperton Fracture Zone

Fujimoto

Murakami²

2020

Zoologischer Anzeiger

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A new genus and species of Loricifera (Nanaloricida: Pliciloricidae) from the deep waters of Japan

Cited by 5 publications

References 24 publications

New records on the rich loriciferan fauna of Trezen ar Skoden (Roscoff, France): Description of two new species of Nanaloricus and the new genus Scutiloricus

New records on the rich loriciferan fauna of Trezen ar Skoden (Roscoff, France): Description of two new species of Nanaloricus and the new genus Scutiloricus

A new Loriciferan, Scaberiloricus samba gen. et sp. nov., links the Higgins larva and the aberrant Shira larva

A new genus and species of Nanaloricidae (Loricifera: Nanaloricida) from the Clarion-Clipperton Fracture Zone

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