﻿Morphological investigation of genital organs and first insights into the phylogeny of the genus Siciliaria Vest, 1867 as a basis for a taxonomic revision (Mollusca, Gastropoda, Clausiliidae)

Mattia, Willy De; Reier, Susanne; Haring, Elisabeth

doi:10.3897/zookeys.1077.67081

Cited by 4 publications

(2 citation statements)

References 41 publications

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“…Yet, the reproductive organs of clausiliids have received less attention, with only some scattered investigations in a few Indochinese species ( Stoliczka 1871 , 1873 ; Likharev 1962 ; Nordsieck 1973 ; Maassen and Gittenberger 2007 ; Páll-Gergely and Szekeres 2017 ). Nevertheless, recent studies on European taxa have shown that the genital organs and their internal sculpture, though highly variable, are helpful for more precise species identification ( De Mattia et al 2020 , 2021 ; Páll-Gergely and Szekeres 2020 ). Lately, Hwang et al (2022) also discussed some characters involving the genitalia and shell sculpture that should be considered for further taxonomic work on clausiliids at the species level based on a molecular analysis of the genus Formosana Boettger, 1877.…”

Section: Introductionmentioning

confidence: 99%

Further notes on the taxonomy of the land snail family Clausiliidae Gray, 1855 (Stylommatophora, Helicina) from Myanmar with description of two new species

Nem¹,

Lwin²,

Sutcharit³

et al. 2023

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This study presents a complete species list of the door snails inhabiting Myanmar, updated to now include 33 taxa, and provides taxonomic notes together with a re-description of the shell, radula, and genitalia for 13 species and subspecies, including Oospira philippiana, the type species of the genus Oospira. The snails previously treated as subspecies or synonyms of Oospira gracilior and Oospira magna are reclassified and recognized as distinct species. The lectotype of Oospira insignis has been clarified and an illustration of the original type specimen provided. A long-overlooked species, Oospira andersoniana, has been collected and redescribed herein. Two new species from the limestone karsts in the Salween River Basin are introduced: Oospira luneainopsis Man & Panha, sp. nov. and Oospira zediopsis Man & Panha, sp. nov. A synoptic view of all clausiliid taxa known from Myanmar is presented along with taxonomic information and distributional records. Photographs of the type materials for all taxa are provided for further comparison or, if unavailable, photographs of the examined specimens or the original figure from the literature.

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Section: Introductionmentioning

confidence: 99%

Further notes on the taxonomy of the land snail family Clausiliidae Gray, 1855 (Stylommatophora, Helicina) from Myanmar with description of two new species

Nem¹,

Lwin²,

Sutcharit³

et al. 2023

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“…Characters of the male copulatory organs in gastropods tend to be phylogenetically conserved and have been widely used in gastropod taxonomy, especially at the familial and generic levels (see, e.g., Taylor 2003; Golding et al 2008;De Mattia et al 2021). The characters traditionally used in taxonomy are almost exclusively gross anatomical traits of the copulatory apparatus such as the presence or absence of certain structures or the arrangement, shape and relative sizes of organs.…”

Section: Introductionmentioning

confidence: 99%

Muscle system of the penial complex in three species of Hygrophila (Gastropoda: Pulmonata)

Soldatenko

Petrov

2022

Proceedings ZIN

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The Hygrophila, a group comprising freshwater lung-bearing gastropods, have a complex copulatory apparatus, whose musculature has recently been shown to provide a number of phylogenetically informative characters that appear to concur with the results of molecular phylogenetic analyses. The number of hygrophilan species for which the male copulatory musculature is known, however, is still relatively small. We examined the muscle arrangement in the penial complex (penis and penis sheath) of three species of Hygrophila: Aplexa hypnorum (Linnaeus, 1758) (fam. Physidae), Kolhymorbis bogatovi Zatravkin et Moskvicheva, 1985 (fam. Planorbidae, tribe Segmentinini), and Planorbarius corneus (Linnaeus, 1758) (fam. Planorbidae, tribe Helisomatini) to explore whether the organization of the male copulatory musculature in these species is consistent with the previously proposed phylogenetic hypotheses. In A. hypnorum, the primarily glandular penis sheath has a three-layered musculature with outer and inner circular and intermediate longitudinal layers. The tubular penis also has a three-layered musculature, with the same sequence of muscle fibers as in the penis sheath. In K. bogatovi, the sequence of muscle layers in the penis sheath is essentially the same as in A. hypnorum. Penial musculature is also arranged in three layers, but the intermediate layer consists of small radial, rather than longitudinal fibers and the inner and outer layers are circular. In P. corneus, the boundaries between muscle layers in both penis and penis sheath are somewhat indistinct, but the circular muscles tend to lie close to their outer and inner walls, while the longitudinal fibers are concentrated in the interior. The comparison with other hygrophilan species, in which the copulatory musculature has been previously studied, shows that the male copulatory musculature of K. bogatovi is consistent in arrangement with that of other representatives of Segmentinini and that the phylogenetic lineage leading to P. corneus has probably diverged before the clade Planorbini + Segmentinini. The musculature of the penial complex of A. hypnorum is generally similar to that of another physid, Physella acuta (Draparnaud, 1805), but the penis sheath of P. acuta lacks an outer layer of circular muscle fibers, which may be explained by reduction.

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New data on land and freshwater molluscs of Sifnos Island and Kitriani Islet (Cyclades, Greece)

Liberto,

Grano,

Cattaneo

et al. 2024

Zoologischer Anzeiger

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Morphological investigation of genital organs and first insights into the phylogeny of the genus Siciliaria Vest, 1867 as a basis for a taxonomic revision (Mollusca, Gastropoda, Clausiliidae)

Cited by 4 publications

References 41 publications

Further notes on the taxonomy of the land snail family Clausiliidae Gray, 1855 (Stylommatophora, Helicina) from Myanmar with description of two new species

Further notes on the taxonomy of the land snail family Clausiliidae Gray, 1855 (Stylommatophora, Helicina) from Myanmar with description of two new species

Muscle system of the penial complex in three species of Hygrophila (Gastropoda: Pulmonata)

New data on land and freshwater molluscs of Sifnos Island and Kitriani Islet (Cyclades, Greece)

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﻿Morphological investigation of genital organs and first insights into the phylogeny of the genus Siciliaria Vest, 1867 as a basis for a taxonomic revision (Mollusca, Gastropoda, Clausiliidae)

Cited by 4 publications

References 41 publications

﻿Further notes on the taxonomy of the land snail family Clausiliidae Gray, 1855 (Stylommatophora, Helicina) from Myanmar with description of two new species

﻿Further notes on the taxonomy of the land snail family Clausiliidae Gray, 1855 (Stylommatophora, Helicina) from Myanmar with description of two new species

Muscle system of the penial complex in three species of Hygrophila (Gastropoda: Pulmonata)

New data on land and freshwater molluscs of Sifnos Island and Kitriani Islet (Cyclades, Greece)

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Morphological investigation of genital organs and first insights into the phylogeny of the genus Siciliaria Vest, 1867 as a basis for a taxonomic revision (Mollusca, Gastropoda, Clausiliidae)

Further notes on the taxonomy of the land snail family Clausiliidae Gray, 1855 (Stylommatophora, Helicina) from Myanmar with description of two new species

Further notes on the taxonomy of the land snail family Clausiliidae Gray, 1855 (Stylommatophora, Helicina) from Myanmar with description of two new species