identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
CB410589CD345F61AD44FA2B1DF63394.text	CB410589CD345F61AD44FA2B1DF63394.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Laocaia Kuzminykh 1999	<div><p>Genus Laocaia Kuzminykh, 1999</p><p>Type species.</p><p>Laocaia attenuata Kuzminykh, 1999: 47–48, by original designation.</p></div>	https://treatment.plazi.org/id/CB410589CD345F61AD44FA2B1DF63394	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Dedov, Ivailo;Manh Vu, Quang;Trieu Anh, Tuan	Dedov, Ivailo, Manh Vu, Quang, Trieu Anh, Tuan (2025): Slugs and semi-slugs of the superfamily Helicarionoidea (Gastropoda, Stylommatophora) collected in North Vietnam during the 2023 Bulgarian Zoological Expedition, with emphasis on the genus Ostracolethe. ZooKeys 1249: 317-338, DOI: 10.3897/zookeys.1249.155684
FF9132655D66505C9634C179552C90E7.text	FF9132655D66505C9634C179552C90E7.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Laocaia simovi Dedov & Schneppat 2019	<div><p>Laocaia simovi Dedov &amp; Schneppat, 2019</p><p>Figs 13 C, D, 14 B 1–14, 3</p><p>Laocaia simovi: Dedov and Schneppat 2019, p. 22 –29.</p><p>Material examined.</p><p>Vietnam • 1 adult, 1 juvenile; Lào Cai Province, Sa Pa district, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=103.7759&amp;materialsCitation.latitude=22.3046" title="Search Plazi for locations around (long 103.7759/lat 22.3046)">Fansipan peak</a>, bamboo forest below the peak; 22.3046°N, 103.7759°E; 3040 m alt.; 24 Oct. 2023; I. Dedov, N. Simov, R. Bekchiev, M. Langurov leg.; IBER-BAS 40619-1 .</p><p>Remarks.</p><p>We found color morph of L. simovi (Fig. 13 D) in 2023 that is more yellowish than the type specimens (Fig. 13 C). The 2023 specimens were found very close to the species’ type locality (Fig. 14 B). For more details on the species, see Dedov et al. (2019).</p></div>	https://treatment.plazi.org/id/FF9132655D66505C9634C179552C90E7	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Dedov, Ivailo;Manh Vu, Quang;Trieu Anh, Tuan	Dedov, Ivailo, Manh Vu, Quang, Trieu Anh, Tuan (2025): Slugs and semi-slugs of the superfamily Helicarionoidea (Gastropoda, Stylommatophora) collected in North Vietnam during the 2023 Bulgarian Zoological Expedition, with emphasis on the genus Ostracolethe. ZooKeys 1249: 317-338, DOI: 10.3897/zookeys.1249.155684
F3BABBF30D2658AFBCB046F1349C51FD.text	F3BABBF30D2658AFBCB046F1349C51FD.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Megaustenia messageri (Bavay & Dautzenberg 1909)	<div><p>Megaustenia cf. messageri (Bavay &amp; Dautzenberg, 1909)</p><p>Fig. 1</p><p>Helicarion messageri: Bavay and Dautzenberg 1909, p. 231.</p><p>Megaustenia messageri: Schileyko 2011, p. 32.</p><p>Helicarion messageri: Hoang Ngoc Khac et al. 2012, p. 319.</p><p>Material examined.</p><p>Vietnam • 3 adults; Vinh Phuc Province, Tam Dao town district, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=105.6483&amp;materialsCitation.latitude=21.4601" title="Search Plazi for locations around (long 105.6483/lat 21.4601)">tropical forest up to the town, near Buddhist temple</a>; 21.4601°N, 105.6483°E; 1045 m alt.; 16 Oct. 2023; I. Dedov, N. Simov, R. Bekchiev, M. Langurov leg.; on artificial stone wall; IBER-BAS 40602 .</p><p>Remarks.</p><p>Megaustenia messageri was reported from Tam Dao National Park by Hoang Ngoc Khac et al. (2012). We found three active specimens on the soil surface (Fig. 1 A, B) during the night collection in the tropical forest not far from Tam Dao town (Fig. 1 C).</p><p>Habitat.</p><p>Slightly disturbed submontane tropical forests</p><p>Distribution.</p><p>North Vietnam (Schileyko 2011).</p></div>	https://treatment.plazi.org/id/F3BABBF30D2658AFBCB046F1349C51FD	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Dedov, Ivailo;Manh Vu, Quang;Trieu Anh, Tuan	Dedov, Ivailo, Manh Vu, Quang, Trieu Anh, Tuan (2025): Slugs and semi-slugs of the superfamily Helicarionoidea (Gastropoda, Stylommatophora) collected in North Vietnam during the 2023 Bulgarian Zoological Expedition, with emphasis on the genus Ostracolethe. ZooKeys 1249: 317-338, DOI: 10.3897/zookeys.1249.155684
9178EF8EE27E51DD8E9F18034EC309A2.text	9178EF8EE27E51DD8E9F18034EC309A2.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Megaustenia T. D. A. Cockerell 1913	<div><p>Genus Megaustenia T. D. A. Cockerell, 1913</p><p>Type species.</p><p>Vitrina praestans A. Gould, 1843: 140; by typification of replaced name. Nom. nov. pro Cryptosoma Theobald, 1857, non Milne-Edwards, 1837 (Crustacea).</p></div>	https://treatment.plazi.org/id/9178EF8EE27E51DD8E9F18034EC309A2	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Dedov, Ivailo;Manh Vu, Quang;Trieu Anh, Tuan	Dedov, Ivailo, Manh Vu, Quang, Trieu Anh, Tuan (2025): Slugs and semi-slugs of the superfamily Helicarionoidea (Gastropoda, Stylommatophora) collected in North Vietnam during the 2023 Bulgarian Zoological Expedition, with emphasis on the genus Ostracolethe. ZooKeys 1249: 317-338, DOI: 10.3897/zookeys.1249.155684
35EBE80CC64B594EAD8558F7C2FA287D.text	35EBE80CC64B594EAD8558F7C2FA287D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Muangnua Solem 1966	<div><p>Genus Muangnua Solem, 1966</p><p>Type species.</p><p>Muangnua limax Solem, 1966: 65, by original designation.</p></div>	https://treatment.plazi.org/id/35EBE80CC64B594EAD8558F7C2FA287D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Dedov, Ivailo;Manh Vu, Quang;Trieu Anh, Tuan	Dedov, Ivailo, Manh Vu, Quang, Trieu Anh, Tuan (2025): Slugs and semi-slugs of the superfamily Helicarionoidea (Gastropoda, Stylommatophora) collected in North Vietnam during the 2023 Bulgarian Zoological Expedition, with emphasis on the genus Ostracolethe. ZooKeys 1249: 317-338, DOI: 10.3897/zookeys.1249.155684
B843AD375A7D5B00B8715E07408D55AC.text	B843AD375A7D5B00B8715E07408D55AC.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Muangnua vumanhi Dedov 2024	<div><p>Muangnua vumanhi Dedov, 2024</p><p>Fig. 12</p><p>Muangnua vumanhi: Dedov 2024, p. 319 –323.</p><p>Material examined.</p><p>Vietnam • 1 adult; Vinh Phuc Province, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=105.6487&amp;materialsCitation.latitude=21.4606" title="Search Plazi for locations around (long 105.6487/lat 21.4606)">Tam Dao town, tropical forest up to the town</a>; 21.4606°N, 105.6487°E; 1055 m alt.; 16 Oct. 2023; I. Dedov, N. Simov, R. Bekchiev, M. Langurov leg.; on and under tree bark with many tree-welling mushrooms, and in decaying logs; IBER-BAS 40601 .</p><p>Remarks.</p><p>This species (Fig. 12) was recently reported from Tam Dao National Park by Dedov (2024).</p></div>	https://treatment.plazi.org/id/B843AD375A7D5B00B8715E07408D55AC	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Dedov, Ivailo;Manh Vu, Quang;Trieu Anh, Tuan	Dedov, Ivailo, Manh Vu, Quang, Trieu Anh, Tuan (2025): Slugs and semi-slugs of the superfamily Helicarionoidea (Gastropoda, Stylommatophora) collected in North Vietnam during the 2023 Bulgarian Zoological Expedition, with emphasis on the genus Ostracolethe. ZooKeys 1249: 317-338, DOI: 10.3897/zookeys.1249.155684
65B1E91112185D27A3E5ECFFE074B08D.text	65B1E91112185D27A3E5ECFFE074B08D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ostracolethe fruhstorfferi Simroth 1901	<div><p>Ostracolethe fruhstorfferi Simroth, 1901</p><p>Figs 2, 3 A, B, 4, 5, 6, 7, 8</p><p>Ostracolethe fruhstorfferi: Simroth 1901, p. 64.</p><p>Myotesta fruhstorferi: Collinge 1901, p. 118.</p><p>Myotesta fruhstorferi: Fischer 1904, Dautzenberg, p. 8.</p><p>Ostracolethe fruhstorfferi: Fischer 1904, Dautzenberg, p. 9.</p><p>Ostracolethe fruhstorfferi: Schileyko 2003, p. 1340.</p><p>Ostracolethe fruhstorfferi: Schileyko 2011, p. 37.</p><p>Material examined.</p><p>Vietnam • 1 adult; Lào Cai Province, Sa Pa district, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=103.7495&amp;materialsCitation.latitude=22.4283" title="Search Plazi for locations around (long 103.7495/lat 22.4283)">Ngu Chi Son village, tropical forest near village</a>; 22.4283°N, 103.7495°E; 1505 m alt.; 22 Oct. 2023; Chi Toan Le leg.; on leaves of a tree; IBER-BAS 40616 ; • 1 subadult; Vinh Phuc Province, Tam Dao town, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=105.644&amp;materialsCitation.latitude=21.4672" title="Search Plazi for locations around (long 105.644/lat 21.4672)">Tam Dao National Park, tropical forest near the town</a>; 21.4672°N, 105.6440°E; 1005 m alt.; 17 Oct. 2023; I. Dedov, N. Simov, R. Bekchiev, M. Langurov leg.; under tree bark of decaying trunks; IBER-BAS 40604 .</p><p>Description.</p><p>The body is relatively wider and shorter than Ostracolethe penevi Dedov &amp; Vu, sp. nov. The visceral hump is large and elevated, but this elevation is better visible in fixed animals (Fig. 2 A, C). The preserved body dimensions (N = 1, adult specimen) are: body length 24 mm, body width 5.2 mm, visceral hump length 11.9 mm, visceral hump width 5.2 mm, length of free mantle flap 5.2 mm, sole length 21.2 mm, sole width 2.6 mm, width of lateral zones of sole 0.75–0.85 mm, central zone of sole 0.85–0.95 mm, length of the genital pore 0.5 mm, width of the genital pore 0.6 mm (Fig. 2 A – D).</p><p>The primary color of the body is pinkish-ocher-brownish (Fig. 3 A, B), although variable (see Discussion). On the neck, three well-defined, blackish-gray- stripes are visible (one on the top and two laterally, best visible in fixed specimens). The tentacles are pale grayish, which are more intensely colored near the ommatophores and visible in active live animals. On the pinkish-ocher-brownish visceral hump, numerous yellowish spots are visible and grouped in larger stains and zones of irregular shapes. The posterior of the body has similar colors; yellowish pigment is grouped on the edge of the Y-shaped dorsal groove behind the visceral hump. The sole of living specimens is generally pale, but with lateral zones more pinkish in color, while the central zone is milky whitish. The differences in coloration between central and lateral zones is still visible in preserved specimens. The body cavity is not enlarged in the posterior part of the foot, but this part is not as muscular as in Ostracolethe sp. nov. and Laocaia simovi (Dedov et al. 2019) . The caudal horn is not very prominent.</p><p>Shell is fingernail-like (3.2 × 2.3 mm), and sparse growth lines are visible on the upper surface. The rudimentary shell is fully covered by the mantle (Fig. 4 A – C).</p><p>Reproductive system (Fig. 5 A – E). The penis is relatively short and thinner in the area towards the atrium. The penis retractor muscle is apically attached to the bulbiform posterior end of the penis. The epiphallus is relatively short, with two caeca, one shorter and another longer, located opposite each other (Fig. 5 D, E). The vas deferens is short and entering epiphallus laterally. The vagina is thick and short. The bursa copulatrix is not well visible and is not visible in the drawing by Schileyko (2003: fig. 1752); it is most probably closely adjacent to the spermoviduct duct, as in O. penevi sp. nov. The albumen is gland small.</p><p>Remarks.</p><p>According to Simroth (1901) (in Collinge 1902, p. 14) “ the vas deferens has, before it passes into the penis, 3 short, thick flagella ”. In fact, the “ three tubercles ” visible on the side of the body integuments (Fig. 5 B) represent the structure described above, which is better visible on the side of the viscera (Fig. 5 D, E).</p><p>The “ disc ” structure reported by Collinge (1902) is present (Fig. 6 A – F). The “ discs ” are not flat but rather have a torus-toroid shape (doughnut-like) readily visible in Figure 6 D. The tori are attached to a veil of the base of connective tissue at one of its flat parts. The structure consists of 35–40 tori of varying sizes (diameter 77.88–379.26 µm) (Fig. 6 A – F). When viewed at high magnification under a stereomicroscope, the “ torus ” appears to be formed by a network of symmetrically interwoven fibers (Fig. 6 A-C, E, F).</p><p>Habitat.</p><p>Ostracolethe fruhstorfferi inhabits tropical and degraded tropical forests, where it lives on leaves or branches in the crowns of trees (Fig. 7 B, C).</p><p>Biology.</p><p>Color change to blend in with the environment, which is a new phenomenon of metachrosis among terrestrial gastropods, was observed in specimens from Tam Dao National Reserve (IBER-BAS 40604). When a specimen was photographed on a stone surface it looked whitish transparent, and only melanin kept the pattern of coloration (Fig. 8 A). The very same specimen photographed on tree bark became more colorful, and pinkish, ocher, brownish, and yellowish colors appeared (Fig. 8 B).</p><p>Distribution.</p><p>North Vietnam (Schileyko 2003).</p></div>	https://treatment.plazi.org/id/65B1E91112185D27A3E5ECFFE074B08D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Dedov, Ivailo;Manh Vu, Quang;Trieu Anh, Tuan	Dedov, Ivailo, Manh Vu, Quang, Trieu Anh, Tuan (2025): Slugs and semi-slugs of the superfamily Helicarionoidea (Gastropoda, Stylommatophora) collected in North Vietnam during the 2023 Bulgarian Zoological Expedition, with emphasis on the genus Ostracolethe. ZooKeys 1249: 317-338, DOI: 10.3897/zookeys.1249.155684
1869456B986E5CE288BF5D1E928C1E53.text	1869456B986E5CE288BF5D1E928C1E53.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ostracolethe penevi Dedov & Vu 2025	<div><p>Ostracolethe (?) penevi Dedov &amp; Vu sp. nov.</p><p>Figs 3 C, 9, 10, 11</p><p>Material examined.</p><p>Vietnam • 1 adult; Lào Cai Province, Sa Pa district, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=103.7773&amp;materialsCitation.latitude=22.3627" title="Search Plazi for locations around (long 103.7773/lat 22.3627)">Thac Bac (= Silver waterfall)</a>; 22.3627°N, 103.7773°E; 1677 m alt.; 23 Oct. 2023; I. Dedov, N. Simov, R. Bekchiev, M. Langurov leg.; forest around touristic area; IBER-BAS 40618 .</p><p>Differential diagnosis.</p><p>Ostracolethe (?) penevi Dedov &amp; Vu, sp. nov. differs from O. fruhstorfferi by its lighter coloration and different color pattern; longer and more slender body; slightly raised long visceral hump shifted towards the head (not central on the body); longer epiphallus; the positions of the epiphallus caeca, which are successively, one after the other (from the epiphallus to the penis, long and short), not opposite to each other as in O. fruhstorfferi, the vas deferens (vd) entering epiphallus slightly laterally (not clearly lateral as in O. fruhstorfferi), and presence of net-like structure with eight circles near the female part of reproductive system.</p><p>Description.</p><p>The body is gracile (Fig. 3 C). The visceral hump is relatively long, slightly raised, and is displaced towards the front of the body. The preserved body dimensions (N = 1) are: body length 38.3 mm, body width 5.7 mm, visceral hump length 15.5 mm, visceral hump width 5.7 mm, length of free mantle flap 5.4 mm, sole length 36.3 mm, sole width 3.0 mm, width of lateral zones of sole 0.85–1.15 mm, width of central zone of sole 0.85–0.9 mm, length of the genital pore (not well visible) 0.8 mm, width of the genital pore 0.55 mm (not well visible) (Fig. 9 A – D).</p><p>Body primary color is light-yellowish-ocher. On the neck, three well-defined gray-blackish stripes are visible (one on the top and two laterally). The tentacles are yellowish. On light-yellowish-ocher (slightly ocher-reddish in its posterior part) visceral hump numerous gray-blackish dots are visible, sometimes grouped in short stripes or spots with irregular shape. Posterior body almost uniformly light-yellowish-ocher with very small dots, well visible under magnification. The dorsal edge of the Y-shaped dorsal groove behind the visceral hump is yellowish. The sole in living specimens is pale-yellowish, more intense yellowish in its lateral margins. In preserved animals, the complete sole loses its pigmentation, which is also the case for all other body parts of the specimens (Fig. 3 C). All colorful pigments (besides melanin) are dissolved in ethanol during the preservation. The body cavity is not enlarged into the posterior part of the foot, which is fully muscular. The caudal horn protrudes slightly beyond the contour of the body and is similarly colored.</p><p>The shell is plate-like, oval-rhomboid (3 × 2 mm), at one end with visible, and with sparse growth lines (Fig. 10 A – C). The rudimentary shell is fully covered by the mantle.</p><p>Reproductive system (Fig. 11 A). The penis is long, thick-walled, and spindle-shaped but slightly pinched around the middle. The penis retractor muscle is attached apically to the posterior end of the penis. The epiphallus is long, about 2 / 3 of the penis length, with 2 caeca: a longer and smaller (1 / 3 of the longer caeca). The vas deferens is comparatively short and entering epiphallus slightly laterally. The free oviduct is relatively short. The vagina is thick and short. The bursa copulatrix is relatively long, finger-like (not divided into a bursa copulatrix and bursa copulatrix duct), closely adjacent to the spermoviduct duct, and reaching about halfway to the albumen gland. The albumen gland is small and pearly-yellowish.</p><p>An unusual net-like structure was found close to the female part of the reproductive system (Fig. 11 B, C). The structure is relatively large and resembles a symmetric net-like formation with eight holes and has dimensions of 3.7 × 1.7 mm (compared to the 14.5 mm length of the reproductive system). Its function remains a mystery, but given its position, it could be homologous to the mucus glands in Helicidae . However, there are no clearly visible channel (s) between this structure and the rest of the reproductive system, even under high magnification. The structure appears to be attached to the female reproductive system by a tangle of connective tissue. The atrium is tubular.</p><p>Distribution.</p><p>North Vietnam, type locality.</p><p>Habitat.</p><p>Ostracolethe (?) penevi Dedov &amp; Vu, sp. nov. inhabits the leaves of high herbaceous and shrubby moisture-loving vegetation (Fig. 7 A).</p><p>Derivatio nominis.</p><p>The new species is named after Prof. Dr Lyubomir Penev for his incredible contribution to the reputation of Bulgarian science and his tireless, friendly support over the years.</p></div>	https://treatment.plazi.org/id/1869456B986E5CE288BF5D1E928C1E53	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Dedov, Ivailo;Manh Vu, Quang;Trieu Anh, Tuan	Dedov, Ivailo, Manh Vu, Quang, Trieu Anh, Tuan (2025): Slugs and semi-slugs of the superfamily Helicarionoidea (Gastropoda, Stylommatophora) collected in North Vietnam during the 2023 Bulgarian Zoological Expedition, with emphasis on the genus Ostracolethe. ZooKeys 1249: 317-338, DOI: 10.3897/zookeys.1249.155684
13FC345F503A55DF843DE2F3013B1A29.text	13FC345F503A55DF843DE2F3013B1A29.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ostracolethe Simroth 1901	<div><p>Genus Ostracolethe Simroth, 1901</p><p>Type species.</p><p>Ostracolethe fruhstorfferi Simroth, 1901: 64 .</p><p>Remarks.</p><p>Ostracolethe is a subjective synonym of Myotesta Collinge, 1901, which was published on the same day. Hoffmann (1924: 378) acted as first reviser and determined the precedence of Ostracolethe over Myotesta .</p></div>	https://treatment.plazi.org/id/13FC345F503A55DF843DE2F3013B1A29	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Dedov, Ivailo;Manh Vu, Quang;Trieu Anh, Tuan	Dedov, Ivailo, Manh Vu, Quang, Trieu Anh, Tuan (2025): Slugs and semi-slugs of the superfamily Helicarionoidea (Gastropoda, Stylommatophora) collected in North Vietnam during the 2023 Bulgarian Zoological Expedition, with emphasis on the genus Ostracolethe. ZooKeys 1249: 317-338, DOI: 10.3897/zookeys.1249.155684
