[Mollusca • 2026] Fansipanica milae, Vinatachea porcellana, ... • New taxa of Camaenidae (Gastropoda: Stylommatophora) from northern Vietnam

Fansipanica milae Páll-Gergely & Dedov,

   

in Páll-Gergely, Gojšina et Dedov, 2026.

DOI: doi.org/10.3897/zookeys.1280.185160

 

Abstract

The following new taxa are described from northern Vietnam: Fansipanica milae Páll-Gergely & Dedov, gen et sp. nov., Ducanhia Páll-Gergely, gen. nov. (type species: Helix balansai Morlet, 1886), Vinatachea porcellana Páll-Gergely, sp. nov. The reproductive anatomy of all three species is described. Helix (Chloritis) gereti Bavay & Dautzenberg, 1900 is moved to Fansipanica gen nov., and Camaena delsaerdti Thach & F. Huber, 2018 is moved to Vinatachea.

Key words: Anatomy, Fansipan Mountains, new species, systematics, taxonomy

Fansipanica milae gen. et sp. nov. 
A–C. Living specimen, D. Habitat. 

 

Fansipanica milae Páll-Gergely & Dedov, gen et sp. nov., 

Ducanhia Páll-Gergely, gen. nov. 

(type species: Helix balansai Morlet, 1886), 

Vinatachea porcellana Páll-Gergely, sp. nov. 

Barna Páll-Gergely, Vukašin Gojšina and Ivailo Dedov. 2026. New taxa of Camaenidae from northern Vietnam (Gastropoda, Stylommatophora). ZooKeys. 1280: 365-392. DOI: doi.org/10.3897/zookeys.1280.185160 [28 May 2026]

[Mollusca • 2026] Georissa meghalayaensis & Acmella bensoni • New Species of Georissa (Gastropoda: Hydrocenidae) and Acmella (Gastropoda: Assimineidae), with new records of Georissa from Northeast India

 

Georissa meghalayaensis sp. nov. and
Acmella bensoni sp. nov. 

 Das & Aravind, 2026

DOI: doi.org/10.5852/ejt.2026.1060.3284 

 x.com/atree_org

Abstract

The present study describes one new species each of Georissa and Acmella from Northeast India. Georissa meghalayaensis sp. nov. and Acmella bensoni sp. nov. are described from Krem Puri, Meghalaya. In addition, Georissa sp. was newly recorded from a soil-leaf litter sample collected at the Sadu Chiru waterfall area in Manipur, and Georissa sarrita was newly recorded from Tuipui in Mizoram. All species were identified based on morphological features, with shell sculpture and suture being the primary distinguishing characters. Notably, all the species from Meghalaya were found inside caves, except for Georissa meghalayaensis (Krem Puri), which was found at the edge of the cave entrance on a wet, moss-covered rocky wall. Further studies are required to confirm the true cavernicolous nature of these microsnails.

Keywords: biodiversity hotspot, cave biodiversity, conchology, conservation, endemics

Georissa meghalayaensis sp. nov. 

Acmella bensoni sp. nov. 

Nipu Kumar Das and Neelavar Ananthram Aravind. 2026. New Species of Georissa (Gastropoda: Hydrocenidae) and Acmella (Gastropoda: Assimineidae), with new records of Georissa from Northeast India.  European Journal of Taxonomy, 1060(1); 1–27. DOI: doi.org/10.5852/ejt.2026.1060.3284 [2026-05-27] 

 x.com/atree_org/status/2065383012116627609

[Mollusca • 2022] Burmochlamys fasciola, B. albida, B. versicolor, ... • Uncovering local Endemism from southeastern Myanmar: Description of the New Karst-associated Terrestrial Snail Genus Burmochlamys (Eupulmonata: Helicarionidae)

 

Burmochlamys Pholyotha & Panha,
A Burmochlamys fasciola sp. nov. paratype showing left and right lateral views;  
D B. albida sp. nov. paratype; E B. moulmeinica sp. nov. paratype;
F B. versicolor sp. nov. paratype; G B. whitteni sp. nov. paratype 

in Pholyotha, Sutcharit, Lin et Panha, 2022.   

 DOI: doi.org/10.3897/zookeys.1110.82461 

Abstract

Salween River basin’s karst ecosystems in southeastern Myanmar remain largely unexplored and are likely to harbour a high terrestrial snail diversity that are often associated with high levels of snail endemism. Here, an outstanding group of new karst-associated terrestrial snails, Burmochlamys gen. nov., are discovered. A study of the comparative morphological and anatomical data reveals that the reproductive tract and radula of this new genus are closely related to the helicarionid genus Sophina Benson, 1859 but shell morphology (shape, size, and sculpture) and mantle extensions are distinct from the latter genus. Burmochlamys gen. nov. now consists of four known nominal species, B. cassidula comb. nov., B. cauisa comb. nov., B. perpaula comb. nov., and B. poongee comb. nov., and five new species; B. albida sp. nov., B. fasciola sp. nov., B. moulmeinica sp. nov., B. versicolor sp. nov., and B. whitteni sp. nov. The highlight is that the members of the new genus show site-specific endemism, being restricted to karstic habitat islands of the Salween River basin. In addition, the discovery supports that the unique and complex structure of Salween River basin’s karst ecosystems are habitats in which the terrestrial malacofauna have speciated and become endemic.

Keywords: Diversity, endemic, Indochina, land snail, limestone, Salween River basin, taxonomy

Family Helicarionidae Bourguignat, 1877

Subfamily Durgellinae Godwin-Austen, 1888

Living snails of Burmochlamys species
A Burmochlamys fasciola sp. nov. paratype CUMZ 14214 showing left and right lateral views B B. cassidula specimen CUMZ 14209
C B. poongee specimen CUMZ 14210 D B. albida sp. nov. paratype CUMZ 14212
E B. moulmeinica sp. nov. paratype CUMZ 14217 F B. versicolor sp. nov. paratype CUMZ 14219 G B. whitteni sp. nov. paratype CUMZ 14222.

Genus Burmochlamys Pholyotha & Panha, gen. nov.

 

Type species: Burmochlamys fasciola sp. nov., by original designation.

Etymology: The name combines Burmo in reference to Burma, the historical name of Myanmar, and the Greek word chlamys meaning mantle or cloak in reference to land snail with well-developed mantle extensions. Therefore, the generic name means the Burmese land snail with the well-developed mantle extensions. The gender of the new generic name is feminine.

Diagnosis: Shell subglobose to globose, small size, little high spire, and sculptured with spiral furrows and undulating radial lines. Snail with five well-developed mantle extensions; caudal horn raised. Genitalia with penial retractor muscle attached at tip of epiphallic caecum; gametolytic organ with rather short to moderate cylindrical duct and bulbous sac; well-developed dart apparatus; flagellum absent. Radula with large monocuspid central tooth and attached by two smaller teeth; laterals and marginals undifferentiated, large monocuspid, and at base of each tooth on outer side attached by a smaller tooth.

B. cassidula comb. nov., B. cauisa comb. nov., 

B. perpaula comb. nov., and B. poongee comb. nov., 

and five new species; B. albida sp. nov., B. fasciola sp. nov., 

B. moulmeinica sp. nov., B. versicolor sp. nov., and B. whitteni sp. nov.

A adult of Burmochlamys moulmeinica sp. nov. while climbing slowly on the karst wall after raining at Lun Nya Pagoda B mating pairs of B. versicolor sp. nov. on the karst wall at Bayin Nyi Cave
C B. versicolor sp. nov. eaten by the carnivorous snail Carinartemis sp. on the karst wall at Bayin Nyi Cave D B. cassidula eaten by the carnivorous snail Haploptychius sp. on the karst wall at Kaw Gon Cave. 

 Arthit Pholyotha, Chirasak Sutcharit, Aung Lin and Somsak Panha. 2022. Uncovering local Endemism from southeastern Myanmar: Description of the New Karst-associated Terrestrial Snail Genus Burmochlamys (Eupulmonata, Helicarionidae).  ZooKeys. 1110: 1-37. DOI: doi.org/10.3897/zookeys.1110.82461 

[Mollusca • 2025] Chamalycaeus aduncus • The First Record of an Operculate Micro Land Snail from the Alycaeinae (Caenogastropoda: Cyclophoridae) in Cambodia

 

Chamalycaeus aduncus Jirapatrasilp,   

in Jirapatrasilp, Thi, Chantha, Chourn, Sophea, Jeratthitikul, Pholyotha, Siriwut, Srisonchai, Panha et Sutcharit, 2025. 

www.ruthenica.net/node/6016

 Researchgate.net/publication/390396808 

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This study reports the first record of the operculate micro land snail from the Alycaeinae, Chamalycaeus aduncus Jirapatrasilp sp. nov., also the first new species of the genus in Cambodia, based on a recent survey in Battambang. This new species is similar to Chamalycaeus excisus (Möllendorff, 1887) and C. excisus sublimus Páll-Gergely et Auffenberg, 2019 from the Philippines, in shell size and shape, and the strongly downwards coiling of R3, but differs in having a shorter R2 without any blunt keel, a round aperture without any incision, and a beak- or hook-like basal edge of the outer peristome. 

Keywords: Battambang; Cyclophoroidea; Gastropoda; Mollusca; taxonomy

Chamalycaeus aduncus sp. nov.
A paratype CUMZ 14462/1, and B paratype CUMZ 14462/2, showing a scraping hole at the umbilical side.

. Representative SEM images of Chamalycaeus aduncus sp. nov., holotype CUMZ 14461
 A whole shell in different positions, and B Close-up images of the aperture; white arrows pointing to the beak- or hook-like basal edge of the outer peristome.

Chamalycaeus aduncus Jirapatrasilp sp. nov.

 

Parin JIRAPATRASILP, Sothearen THI, Nasak CHANTHA, Phyroum CHOURN, Chhin SOPHEA, Ekgachai JERATTHITIKUL, Arthit PHOLYOTHA, Warut SIRIWUT, Ruttapon SRISONCHAI, Somsak PANHA and Chirasak SUTCHARIT. 2025. The First Record of an Operculate Micro Land Snail from the Alycaeinae (Caenogastropoda, Cyclophoridae) in Cambodia, with Description of A New Species of Chamalycaeus von Möllendorff, 1897. Ruthenica Russian Malacological Journal. 35(2); 65-72. https://www.ruthenica.net/node/6016

 Researchgate.net/publication/390396808_The_first_record_of_an_operculate_micro_land_snail_from_the_Alycaeinae_Cyclophoridae_in_Cambodia

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[Mollusca • 2026] Operculate Land Snails (Gastropoda: Caenogastropoda: Cyclophoroidea) from Padang Bindu Karst, South Sumatra, Indonesia with the Description of A New Species, Chamalycaeus dayangmerindu

 

c. Chamalycaeus dayangmerindu Aulia & Nurinsiyah, sp. nov.;
d. C. korintjiensis (Páll-Gergely, 2020), holotype (ZMA.MOLL 135672).
a. Stomacosmethis cf. jagori (E. von Martens, 1860); b. S. jagori (E. von Martens, 1860), syntype (SMF 109304); 

in Aulia, Nurinsiyah, Mujiono, Páll-Gergely et Ambarwati, 2026.  

 DOI: doi.org/10.3897/zookeys.1272.179378

Abstract

The study on Cyclophoroidea from Padang Bindu Karst, South Sumatra, was conducted to document the species diversity of the superfamily in the area. The samples, including leaf litter and soil samples, were collected in May–June 2021 and followed by the determination and examination on 2023 to 2024 in the Museum Zoologicum Bogoriense. In total 3,780 specimens from the superfamily Cyclophoroidea were examined. Measurements of the shell and operculum were performed using L.A.S V4. 13.0 and IMAGE J. The research revealed 11 species from three families (Cyclophoridae, Diplomatinidae, Pupinidae) and four subfamilies. Plectostoma kitteli is the most abundant species followed by Stomacosmethis cf. jagori (19.84%) and Diplommatina liwaensis (6.67%). A new species, Chamalycaeus dayangmerindu Aulia & Nurinsiyah, sp. nov. is described. The study also discovered four species endemics to Sumatra with one species among them so far only recorded from Padang Bindu karst area. These findings emphasize the region’s unique biodiversity.

Key words: Biodiversity, conservation, limestone, molluscs, operculum

Shells of Alycaeinae. a. Stomacosmethis cf. jagori (E. von Martens, 1860); b. Stomacosmethis jagori (E. von Martens, 1860), syntype (SMF 109304);
c. Chamalycaeus dayangmerindu sp. nov.; d. Chamalycaeus korintjiensis (Páll-Gergely, 2020), holotype (ZMA.MOLL 135672).

Chamalycaeus dayangmerindu Aulia & Nurinsiyah, sp. nov.

Habitat. Limestone rocks.

Distribution. The species is so far only recorded from Padang Bindu Karst, South Sumatra.

Etymology. The species name Dayang Merindu was inspired by Princess Dayang Merindu, a figure from local folklore. According to the legend, Princess Dayang Merindu ignored the greeting of a man, as she was already married. Her action was then perceived as arrogance, and the man cursed her into stone. The stone associated with this tale is located inside Gua Putri, a karst cave formation in the Padang Bindu area.

 Latifah Nurul Aulia, Ayu Savitri Nurinsiyah, Nova Mujiono, Barna Páll-Gergely and Reni Ambarwati. 2026. Operculate Land Snails (Gastropoda, Caenogastropoda, Cyclophoroidea) from Padang Bindu Karst, South Sumatra, Indonesia with the Description of A New Species, Chamalycaeus dayangmerindu. ZooKeys. 1272: 1-31. DOI: doi.org/10.3897/zookeys.1272.179378 [02 Mar 2026]

[Mollusca • 2021] Hemiplecta nemorosa • Systematic Review of the Dextral Hemiplecta Albers, 1850 (Eupulmonata: Ariophantidae) from Thailand with Description of A New Species and List of All the Indochinese Species

A Hemiplecta humphreysiana from Singapore; B Hemiplecta distincta from Saraburi, Thailand;
D, E Hemiplecta funerea from Nan, Thailand D yellow shell form and E dark shell form;
  F Hemiplecta esculenta from Chiang Mai, Thailand; 

Hemiplecta nemorosa  Sutcharit & Panha, 2021

DOI: 10.3897/zookeys.1047.65735

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Abstract

The genus Hemiplecta is a group of large-sized land snails which have long been used as a food resource by Indochinese people. There are five dextral and four sinistral species currently recognized from Thailand. The dextral group is comprised of two previously recorded species (H. humphreysiana and H. distincta), two newly recorded species (H. funerea and H. esculenta), and one new species (Hemiplecta nemorosa sp. nov.) from northern Thailand is being proposed. We reassessed the diagnostic characters of the genitalia, mantle edge, and radula. Specimens were classified into the genus Hemiplecta on the basis of the penial verge and shell lobe, and on the characters of a bulbous gametolytic sac without a gametolytic duct. A complete species list, together with photographs of the name-bearing types or authenticated specimens and the taxonomic status of Hemiplecta s.l. that are known from Indochina including Peninsular Malaysia and Myanmar, is provided for the first time. In total, this species list contains 39 available nominal species names described from this area. Type or authentic specimens can be located for 37 nominal species names, of which 25 are illustrated herein and the other 12 were recently illustrated. However, two available species-level names could not be traced to any type specimens. In addition, lectotypes of H. funerea and H. pluto are designated herein to stabilize the names.

Keywords: Conservation, edible snails, lectotype, Southeast Asia, taxonomy type specimen

Living snail.
A Hemiplecta humphreysiana from Singapore (width about 45 mm)
B, C Hemiplecta distincta B from Saraburi, Thailand (width about 65 mm) and C mating pairs
D, E Hemiplecta funerea from Nan, Thailand (width about 50 mm) D yellow shell form and E dark shell form (width about 50 mm)  
F Hemiplecta esculenta from Chiang Mai, Thailand (width about 30 mm).

 Chirasak Sutcharit and Somsak Panha. 2021. Systematic Review of the Dextral Hemiplecta Albers, 1850 (Eupulmonata, Ariophantidae) from Thailand with Description of A New Species and List of All the Indochinese Species. ZooKeys. 1047: 101-154. DOI: 10.3897/zookeys.1047.65735

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[Mollusca • 2025] Discartemon sirindhornae • A New Discartemon Species (Eupulmonata: Streptaxidae) from Peninsular Thailand

 

Discartemon sirindhornae Artsamart & Siriboon,

in Artsamart, Rungruangdejwattana, Camngam, Raksasin, Sutcharit, Jirapatrasilp et Siriboon, 2025.   

หอยนักล่าสิรินธร  ||  DOI: doi.org/10.58837/tnh.25.8.267107  

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Abstract

Discartemon sirindhornae Artsamart & Siriboon, sp. nov. is described and illustrated based on specimens collected from Chumphon Province in Peninsular Thailand. The new species possesses a flattened shell with a slightly convex spire, a weakly angular last whorl, and an intermediately expanded whorl. The apertural dentition consists of one parietal lamella, one ridge-like and one small lower palatal, one small basal, and one small columellar lamella. The penis is long, slender and twisted distally, with penial hooks separated by elevated longitudinal folds. The current study advances knowledge of the streptaxid land snail species in Thailand and emphasizes the value of limestone habitats for preserving biodiversity.

Keywords: carnivorous snail, systematics, genitalia, limestone, endemic species

Discartemon sirindhornae

หอยนักล่าสิรินธร 

 

Palod Artsamart, Pongpisit Rungruangdejwattana, Chalinee Camngam, Chutathip Raksasin, Chirasak Sutcharit, Parin Jirapatrasilp and Thanit Siriboon. 2025. Discovery of A New Discartemon Species (Eupulmonata: Streptaxidae) from Peninsular Thailand.  Tropical Natural History. Suppl. 8; 380-389. DOI: doi.org/10.58837/tnh.25.8.267107 [2025-10-20]

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[Mollusca • 2025] Siamopotaxis principalis & S. thailandensis • A New Helicarionoidean Land Snail Genus Siamopotaxis gen. nov. (Eupulmonata: Helicarionidae) from Thailand based on Molecular Phylogenetic and Morphological Evidence

 

Siamopotaxis Pholyotha, gen. nov. 
Siamopotaxis principalis Pholyotha, sp. nov. 
Siamopotaxis thailandensis Pholyotha, sp. nov.

in Pholyotha, Tongkerd, Panha et Sutcharit, 2025.  

 DOI: doi.org/10.58837/tnh.25.8.267115 

Abstract

The new helicarionoidean land snail genus Siamopotaxis Pholyotha, gen. nov. is described for two new species, Siamopotaxis principalis Pholyotha, sp. nov. and Siamopotaxis thailandensis Pholyotha, sp. nov., both from Thailand. The new genus is characterised by a medium-sized, globose, high-spired, cream-coloured shell, with one or two supraperipheral bands, a rounded last whorl, a short epiphallic caecum, an elongated dart apparatus, and many radular teeth with pectiniform cusps. Siamopotaxis principalis sp. nov. differs from S. thailandensis sp. nov. by the presence of one spiral band, whereas the latter species has two spiral bands. A DNA sequence analysis of mitochondrial COI and 16S DNA, and nuclear 28S DNA gene fragments, supports the systematic placement of these new taxa and confirms that Siamopotaxis gen. nov. as a distinct clade within the Helicarionidae.

Keywords: Diversity, Endemic, Indochina, Land snail, Limestone, Taxonomy

A–D Siamopotaxis principalis sp. nov., A holotype CUMZ 15186, and B–D paratypesCUMZ 15257 from the type locality. 
E, F  Siamopotaxis thailandensis sp. nov., E holotype CUMZ 15116 and F paratype CUMZ 15117 from the type locality 

Photographs of living snails.
A, B Siamopotaxis principalis sp. nov., paratype CUMZ 15257, A right side, B left side.
C, D Siamopotaxis thailandensis sp. nov., C right side of paratype CUMZ 15117, D left side of paratype CUMZ 14924.

หอยหางดิ้นเจ้าฟ้า Siamopotaxis principalis 

Arthit Pholyotha, Piyoros Tongkerd, Somsak Panha and Chirasak Sutcharit. 2025. Discovery of a New Helicarionoidean Land Snail Genus Siamopotaxis gen. nov. (Eupulmonata: Helicarionidae) from Thailand Based on Molecular Phylogenetic and Morphological Evidence. Tropical Natural History. Suppl. 8; 121-139. DOI: doi.org/10.58837/tnh.25.8.267115 [2025-10-14]

[Mollusca • 2025] Hypselostoma pongrati & H. sichomphuense, ... • Two New Species of terrestrial Microsnails of the genus Hypselostoma W.H. Benson, 1856 (Gastropoda: Eupulmonata: Hypselostomatidae) from northeastern Thailand

 

A, B. Hypselostoma pongrati sp. nov. 
 C, D. Hypselostoma sichomphuense sp. nov.  

Tanmuangpak & S. Tumpeesuwan,

in Tanmuangpak, Nahok, Chanlabut, C. Tumpeesuwan et S. Tumpeesuwan, 2025.

 DOI: doi.org/10.3897/zookeys.1265.160661

Abstract

Two new species of hypselostomatid land microsnails, Hypselostoma pongrati Tanmuangpak & S. Tumpeesuwan, sp. nov. from Nong Bua Lamphu Province and H. sichomphuense Tanmuangpak & S. Tumpeesuwan, sp. nov. from Khon Kaen Province, are described based on the morphology of their shell, radula, and genital system. Both new species are very similar in shell shape to H. phupaman from Chaiyaphum Province, possessing a double-keeled last whorl. However, H. pongrati Tanmuangpak & S. Tumpeesuwan, sp. nov. is distinguished by the absence of apertural barriers, whereas H. sichomphuense Tanmuangpak & S. Tumpeesuwan, sp. nov. possesses three apertural barriers, and H. phupaman possesses six or seven. The three species were found on isolated limestone hills in the Chaiyaphum-Khon Kaen-Nong Bua Lamphu-Loei area.

Key words: Apertural barriers, double-keeled last whorl, genital system, limestone hills, radula

Taxonomy

Family Hypselostomatidae Zilch, 1959

Genus Hypselostoma W.H. Benson, 1856

Living Hypselostoma spp.
A, B. Hypselostoma pongrati sp. nov. paratype NHLRU015;
C, D. H. sichomphuense sp. nov. paratype NHLRU033.

 Hypselostoma pongrati Tanmuangpak & S. Tumpeesuwan, sp. nov.

Diagnosis. This new species has a prominent keel on the upper part of the last whorl and a weaker keel on the lower part. Apertural barriers absent (Fig. 3A, G, H, L). Terminal part of the last whorl is adnated to penultimate whorl.

Etymology. This new species is dedicated to the late Pongrat Dumrongrojwattana, our highly respected senior who was an expert on microsnails and who provided us with many land snails references, knowledge, and inspiration.

 Hypselostoma sichomphuense Tanmuangpak & S. Tumpeesuwan, sp. nov.

 

Diagnosis. This new species differs from Hypselostoma phupaman by the presence of a non-prominent lower keel on the last whorl and the absence of basal and parietal apertural barriers. Aperture has three smooth tooth-like swellings (Fig. 4A, G–I), whereas there are no apertural barriers in H. pongrati sp. nov. (Fig. 3A, G–I). Spire shorter than the spire of H. pongrati sp. nov.

Etymology. The specific epithet sichomphuense refers to Si Chomphu District, Khon Kaen Province, northeastern Thailand, where this species was discovered.

 Kitti Tanmuangpak, Benchawan Nahok, Utain Chanlabut, Chanidaporn Tumpeesuwan and Sakboworn Tumpeesuwan. 2025. Two New Species of terrestrial Microsnails of the genus Hypselostoma W.H. Benson, 1856 (Gastropoda, Eupulmonata, Hypselostomatidae) from northeastern Thailand. ZooKeys. 1265: 49-67. DOI: doi.org/10.3897/zookeys.1265.160661

[Mollusca • 2025] Theobaldius? konkanensis • A New Species of cyclophorid land snail (Gastropoda: Caenogastropoda: Cyclophoridae) from the coastal regions of Maharashtra, India

Theobaldius? konkanensis 

Bhosale, Thackeray, Yadav, Khandekar, White & Raheem, 2025

DOI: doi.org/10.1080/13235818.2025.2462864 

instagram.com/thackeraywildlifefoundation

 

ABSTRACT

We describe a new species of cyclophorid land snail, Theobaldius? konkanensis n. sp., from the coastal and lower elevational region of the northern Western Ghats in Maharashtra, India. Theobaldius? konkanensis n. sp. can be differentiated from other species of Theobaldius Nevill, 1878 by the combination of a conoidally depressed shell with a more elevated spire, a deep notch on the apertural margin overhung by a prominent raised fold, and an operculum with the edges of the whorls conspicuously raised and bearing short spines. We provide a detailed description of the new species, focusing on the shell, operculum, jaw and radula, and the external morphology of the living animal; we map its distribution using recently collected data, and compare it with other species of Theobalidus and other cyclophoroidean genera.

KEYWORDS: Konkan, northern Western Ghats, operculum, taxonomy, Theobaldius?

Theobaldius? konkanensis n. sp.

 

Amrut Bhosale, Tejas Thackeray, Omkar Yadav, Akshay Khandekar, Tom S. White and Dinarzarde C. Raheem. 2025. A New Species of cyclophorid land snail (Caenogastropoda: Cyclophoridae) from the coastal regions of Maharashtra, India. Molluscan Research. 45(2); 157-169. DOI: doi.org/10.1080/13235818.2025.2462864 [11 Mar 2025] 

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[Mollusca • 2025] Lagocheilus hayaomiyazakii • First Record of the Genus Lagocheilus W.T. Blanford, 1864 (Caenogastropoda: Cyclophoridae) from the northern Western Ghats, India, with the Description of A New Species

Lagocheilus hayaomiyazakii

Bhosale, Thackeray, Raheem, Pawar & Khandekar, 2025

Tilari hairy snail ||  Journal of Conchology. 45(4);

Abstract

 We describe a new species of Lagocheilus from Ratoba Point, Tilari Nagar, Kolhapur District, in the northern Western Ghats of Maharashtra, India. Lagocheilus hayaomiyazakii n. sp. can be distinguished from its South Indian and Sri Lankan congeners by a unique combination of shell characters: a conoidal shell with a raised spire, a broad base, and narrow umbilicus; a wide aperture with a clearly expanded lip and a distinct angle where the lip joins the parietal wall; shell sculpture of prominent, widely spaced spiral lirae; and, in juvenile and young adults, a thick peri­ostracum with numerous periostracal hairs. We also describe the living animal, operculum, radula and jaw. This is the first record of the genus Lagocheilus from the northern Western Ghats, extending its known distribution range by 540 km north into the Indian Peninsula.

Key words. Hairy land snail, Japonia, Lagocheilus hayaomiyazakii n. sp., taxonomy, Western Ghats

Shell of South Indian and Sri Lankan Lagocheilus species.
 A–C, L. malleatus from the Beddome collection (NHMUK 1875. 03.06.22/1). D–F, L. shiplayi lectotype (NHMUK 20110216/1). G–I, L. shiplayi from the Barnacle collection (NHMUK 20110217/1). J–L, L. binoyae syntype (NHMUK 1958.1.14.26).
M–O, L. occultus syntype (NHMUK 1958.1.14.29). P–R, L. vescus syntype (NHMUK 1958.1.14.13). S–U, Lagocheilus hayaomiyazakii n. sp., holotype (NRC-AA-9576).

A–R © The Trustees of the Natural History Museum, London.

Lagocheilus hayaomiyazakii n. sp.
E, male, paratype NRC-AA-9601. F, female, paratype NRC-AA-9600.

Lagocheilus hayaomiyazakii n. sp. 

 Diagnosis. The new species can be diagnosed from its South Indian and Sri Lanka congeners by the following combination of shell characters: a conoidal shell with a raised spire, broad base and narrow umbilicus; a wide aperture with a clearly expanded lip and a distinct angle where the lip joins the parietal wall; shell sculpture of prominent widely spaced spiral lirae; and numerous hairs on the periostracum of juvenile and young adult shells.

Etymology. The specific epithet is a Latinised patronym honouring Hayao Miyazaki (b. 1941), a renowned Japanese animator, filmmaker, and co-founder of Studio Ghibli; the new species is named after him in recognition of his contribution to animation films. The suggested English common name is Tilari hairy snail.

Amrut Bhosale, Tejas Thackeray, Dinarzarde C. Raheem, Swapnil Pawar and Akshay Khandekar. 2025. First Record of the Genus Lagocheilus W.T. Blanford, 1864 (Caenogastropoda: Cyclophoridae) from the northern Western Ghats, India, with the description of L. hayaomiyazakii n. sp. Journal of Conchology. 45(4); DOI. 10.61733/jconch/4557 [14 October 2025]

  

[Mollusca • 2025] Pseudobuliminus beijingensis • Polyphyly in A Morphologically defined Genus: Phylogeny and Morphology of Pseudobuliminus (Eupulmonata: Camaenidae) from eastern and northern China, with A Checklist of Species from mainland China

Pseudobuliminus beijingensis  X.-X. Wang,

in Zhang & Wang, 2025  

DOI: doi.org/10.1080/13235818.2025.2494894

 

ABSTRACT  

Pseudobuliminus (Eupulmonata: Camaenidae) has traditionally been delimited to exclusively contain species with conoidal shells, but questions regarding its monophyly have remained. Extensive morphometric analyses conducted on almost all Pseudobuliminus species from China indicate that possessing a conoidal shell alone is not a sufficient character to establish genus membership. It was previously shown that Pseudobuliminus species from Shandong Province lack a dart sac and possess a flagellum. We found the same reproductive characteristics in additional species from eastern and northern China, such as P. buliminoides from Nanjing, Jiangsu Province, and Pseudobuliminus beijingensis n. sp., described herein from Fangshan, Beijing Province. In contrast, species from western China differ from this configuration by having a dart sac but lacking a flagellum. Based on partial sequences of the mitochondrial 16S rRNA and the nuclear spacer ITS2, our molecular phylogeny demonstrates that the species from eastern and northern China form a clade. We conclude that the combination of lack of a dart sac and presence of a flagellum is a morphological synapomorphy shared by the members of this taxonomic lineage.  

 

KEYWORDS: Beijing, Bradybaeninae, cladistics, Yanshan Mountains, synapomorphy

Shells of Pseudobuliminus beijingensis n. sp. type specimens.
A  Aperture, umbilicus and apex views of holotype. B Aperture, umbilicus and apex views of paratype SDNU.Gas.0397.01.02. C View of protoconch, smooth.

  

  Photographs of live specimens of Pseudobuliminus beijingensis n. sp. and its habitat.
A The mountain habitat where the species is found. B–C Living individuals on the tree. D The mating. E The probable host.

Pseudobuliminus beijingensis n. sp.

Distribution: Only known from the type locality, Bejing.

Etymology: The name is after Beijing, capital of the P.R. China.

Remarks: This species resembles Pseudobuliminus piligerus, P. buliminus buliminus and P. conoidius from western China. P. piligerus, P. buliminus and P. beijingensis n. sp. do not cluster together in molecular phylogeny, highlighting the homoplasy in shell shapes.

Guoyi Zhang and Xing-Xiao Wang. 2025. Polyphyly in A Morphologically defined Genus: Phylogeny and Morphology of Pseudobuliminus (Eupulmonata: Camaenidae) from eastern and northern China, with A Checklist of Species from mainland China. Molluscan Research. DOI: doi.org/10.1080/13235818.2025.2494894  [14 May 2025]

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