Kalyptorhynchia (Platyhelminthes: Rhabdocoela) from KwaZulu-Natal (South Africa), with the description of six new species

Willems, Wim; Reygel, Patrick; Steenkiste, Niels Van; Tessens, Bart; Artois, Tom

doi:10.11646/zootaxa.4242.3.2

Cited by 945 publications

(14 citation statements)

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“…Apart from I. sinensis (now K. sinensis comb. n.), the genus Itaipusa contained 16 species up to now (Karling 1980;Reygel et al 2011;Willems et al 2017). Traditionally, representatives of Itaipusa were identified by the presence of a strong proboscis juncture sphincter and a pharynx without a closing mouth sphincter (Marcus 1949; Karling 1980, but see further).…”

Section: Discussionmentioning

confidence: 99%

“…In I. novacaledonica sp. n., the two spiny belts are M shaped and inverted U shaped, respectively, while in I. sbui, one belt has the appearance of a twisted figure eight and the other one is U shaped (see Willems et al 2017).…”

Section: Discussionmentioning

confidence: 99%

“…For comparative purposes, the holotypes of Itaipusa riegeri (SMNH Type-2957), I. ruffinjonesi (SMNH Type-2958), I. bispina Karling, 1980 (SMNH Type-3127), and I. variodentata (Karling, Mack-Fira & Dörjes, 1972) Karling, 1978(SMNH Type-2481 were studied. Also, we examined the reference material present in Hasselt University of I. divae and the paratypes of I. sbui Willems & Artois, 2017(in Willems et al 2017 and the reference material in the SMNH of I. bispina (Nrs. 94020 & 94021).…”

Section: Methodsmentioning

confidence: 99%

“…n., I. acerosa (Brunet, 1972) Karling, 1978, I. biglandula, I. karlingi Mack-Fira, 1968, I. novacaledonica sp. n., I. sbui Willems & Artois in Willems et al, 2017, I. similis (Brunet, 1972) Karling, 1978, I. sophiae (Graff, 1905 Karling, 1978, andI. spinibursa Karling, 1978. Itaipusa divae Marcus, 1949 (Fig.…”

Section: Platyhelminthes Claus 1887mentioning

confidence: 99%

“…Afterward, he considered it a separate family (Meixner, 1925), at that moment including three species: Koinocystis sophiae Graff (1905) [now Itaipusa sophiae (Graff, 1905) Karling, 1978], K. neocomensis (Fuhrmann, 1904) Meixner, 1924and Anoplorhynchus piger Meixner, 1925[= Sekerana stolzi (Sekera, 1912 Strand, 1914; see Karling 1980]. Since then many new species and genera have been described, and the taxonomy was discussed and refined by several authors: Marcus (1949Marcus ( , 1951Marcus ( , 1954, Karling (1952aKarling ( , 1952bKarling ( , 1954Karling ( , 1964Karling ( , 1978Karling ( , 1980, Brunet (1972), Reygel et al (2011), Willems et al (2017), and Lin et al (2017). Currently, Koinocystididae includes 24 accepted genera and 51 accepted species (Tyler et al 2006(Tyler et al -2020.…”

Section: Introductionmentioning

confidence: 99%

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Taxonomy and phylogeny of Koinocystididae (Platyhelminthes, Kalyptorhynchia), with the description of three new genera and twelve new species

Diez

Monnens

Aguirre³

et al. 2021

Zootaxa

Self Cite

998

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The taxon Koinocystididae is the third most species-rich family within Eukalyptorhynchia. However, its diversity and phylogeny have been largely neglected in former studies. We introduce three new genera and twelve new species of Koinocystididae including Simplexcystis asymmetrica gen. n. sp. n., Galapagetula cubensis sp. n., eight species of Reinhardorhynchus gen. n. and two species of Itaipusa. This raises the total number of species within Koinocystididae from 51 to 63. We also report on new distribution records for six known species: I. divae (Cuba, Panama and New Caledonia), I. karlingi (Sardinia and Lanzarote), Reinhardorhynchus riegeri comb. n. (Cuba), R. ruffinjonesi comb. n. (Cuba and Panama), Utelga heinckei (Cuba and Lanzarote), and U. pseudoheinckei (Sardinia). Simplexcystis asymmetrica gen. n. sp. n. is characterised by a male duct running eccentrically through the copulatory bulb, lack of any hard structures in the male system, lack of a bursa, and the fact that the epithelia of the female, the male, and part of the common atrium are covered by a brush border. Galapagetula cubensis sp. n. has a caudal gonopore, a divisa-type copulatory bulb with an unarmed penis papilla, and a female duct without a sphincter. The new species of Itaipusa and Reinhardorhynchus gen. n. differ from their congeners in the detailed structure of the copulatory bulb and especially the hard structures associated with it. In a molecular phylogenetic analysis based on all available 18S and 28S rDNA sequences of koinocystidids, we found support for the monophyly of the family and the genus Utelga Marcus, 1949. The genus Itaipusa is not monophyletic in that I. sinensis forms a clade with Rhinolasius dillonicus, while other species of Itaipusa that have a copulatory bulb armed with hooks form a clade together with Sekerana stolzi. As the type species of Itaipusa (I. divae) is in neither of these clades, we erected a new genus for I. sinensis (Koinogladius gen. n.) and one for species of Itaipusa having a hook-bearing copulatory bulb (Reinhardorhynchus gen. n.), respectively. Whether the remaining species of Itaipusa form a monophylum remains uncertain.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Platyhelminthes Claus 1887mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Taxonomy and phylogeny of Koinocystididae (Platyhelminthes, Kalyptorhynchia), with the description of three new genera and twelve new species

Diez

Monnens

Aguirre³

et al. 2021

Zootaxa

Self Cite

998

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Patterns of host-parasite associations between marine meiofaunal flatworms (Platyhelminthes) and rhytidocystids (Apicomplexa)

Van Steenkiste,

Wakeman,

Söderström

et al. 2023

Sci Rep

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Microturbellarians are abundant and ubiquitous members of marine meiofaunal communities around the world. Because of their small body size, these microscopic animals are rarely considered as hosts for parasitic organisms. Indeed, many protists, both free-living and parasitic ones, equal or surpass meiofaunal animals in size. Despite several anecdotal records of “gregarines”, “sporozoans”, and “apicomplexans” parasitizing microturbellarians in the literature—some of them dating back to the nineteenth century—these single-celled parasites have never been identified and characterized. More recently, the sequencing of eukaryotic microbiomes in microscopic invertebrates have revealed a hidden diversity of protist parasites infecting microturbellarians and other meiofaunal animals. Here we show that apicomplexans isolated from twelve taxonomically diverse rhabdocoel taxa and one species of proseriate collected in four geographically distinct areas around the Pacific Ocean (Okinawa, Hokkaido, and British Columbia) and the Caribbean Sea (Curaçao) all belong to the apicomplexan genus Rhytidocystis. Based on comprehensive molecular phylogenies of Rhabdocoela and Proseriata inferred from both 18S and 28S rDNA sequences, as well as a molecular phylogeny of Marosporida inferred from 18S rDNA sequences, we determine the phylogenetic positions of the microturbellarian hosts and their parasites. Multiple lines of evidence, including morphological and molecular data, show that at least nine new species of Rhytidocystis infect the microturbellarian hosts collected in this study, more than doubling the number of previously recognized species of Rhytidocystis, all of which infect polychaete hosts. A cophylogenetic analysis examining patterns of phylosymbiosis between hosts and parasites suggests a complex picture of overall incongruence between host and parasite phylogenies, and varying degrees of geographic signals and taxon specificity.

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Reversal of Precedence for Lineidae McIntosh, 1874 over Its Senior Synonyms Borlasiidae Diesing, 1862 and Nemertidae Ehrenberg, 1831 (Nemertea: Heteronemertea)

Kajihara

2022

Spec.Div.

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Kalyptorhynchia (Platyhelminthes: Rhabdocoela) from KwaZulu-Natal (South Africa), with the description of six new species

Cited by 945 publications

References 0 publications

Taxonomy and phylogeny of Koinocystididae (Platyhelminthes, Kalyptorhynchia), with the description of three new genera and twelve new species

Taxonomy and phylogeny of Koinocystididae (Platyhelminthes, Kalyptorhynchia), with the description of three new genera and twelve new species

Patterns of host-parasite associations between marine meiofaunal flatworms (Platyhelminthes) and rhytidocystids (Apicomplexa)

Reversal of Precedence for Lineidae McIntosh, 1874 over Its Senior Synonyms Borlasiidae Diesing, 1862 and Nemertidae Ehrenberg, 1831 (Nemertea: Heteronemertea)

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