identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
CF0387C3D50BB158FC8BA643FE8BF939.text	CF0387C3D50BB158FC8BA643FE8BF939.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ototyphlonemertes (duplex) Diesing 1863	<div><p>Ototyphlonemertes (duplex) chernyshevi sp. nov.</p> <p>(Fig. 4)</p> <p>? Ototyphlonemertes (O.) cf. martynovi: Chernyshev 2007: 199, fig. 1f, g.</p> <p>Material examined. Three specimens, all from Dam Trong; ICHUM 5348 (holotype); ICHUM 5349, 5350 (two paratypes).</p> <p>Description. Body length 8–12 mm (8 mm in holotype), width 0.2–0.3 mm (0.2 mm in holotype) (n =3) (Fig. 4A, B). Epidermis whitish (Fig. 4A); cephalic furrow postcerebrally; tissues around brain reddish; cirri present on cephalic region and hind end of body. Statoliths two-partite (Fig. 4 C–E), 10.2–11.7 µm in diameter (10.2 µm in holotype) (n =3); statocyst 24.8–29.5 µm in diameter (24.8 µm in holotype) (n =3). Proboscis diaphragm short (Fig. 4F); gland secretion ring situated anterior to hind end of basis; accessory stylet pouches two (Fig. 4F), each containing two accessory stylets (directing either anteriorly or posteriorly), situated laterally to central-stylet basis; central stylet smooth (Fig. 4 F–H), 28.2–33.6 µm long (33.6 µm in holotype); basis 26.2–30.8 µm long (30.8 µm in holotype), 9.4–11.8 µm wide (11.8 µm in holotype) (n =3); basis length/width ratio 2.28– 2.80 (2.61 in holotype) (n =3); posterior chamber opaque, without specialized anterior portion. Intestinal diverticula shallow and sack-like. Posterior adhesive plate with cells containing orange contents (Fig. 4I).</p> <p>Distribution. So far known only from the type locality, the island of Dam Trong, Vietnam.</p> <p>Etymology. The specific name is a noun in the genitive case, after the distinguished nemertean biologist Professor Dr Alexei Viktorovich Chernyshev at A. V. Zhirmunsky Institute of Marine Biology, Far East Branch of Russian Academy of Science, and concurrently at Far Eastern Federal University, in recognition of his significant contribution to the nemertean systematics in general and, in particular, that of Ototyphlonemertes, as well as to clarification of Vietnamese nemertean fauna.</p> <p>Remarks. Ototyphlonemertes (duplex) chernyshevi sp. nov. is similar to a specimen from Van Phong Bay, Vietnam (12°39′N, 109°20′E), which was uncertainly identified as O. (duplex) martynovi by Chernyshev (2007), in that their stylet bases are thick and stumpy, by which they can be distinguished from O. (duplex) envalli sp. nov. and O. (duplex) norenburgi sp. nov.; the basis is thinner in the latter two in comparison with that of O. (duplex) chernyshevi. Our unpublished sequence data indicate that O. (duplex) chernyshevi is genetically different from O. (duplex) martynovi s.str. (14.89–16.29% in uncorrected p -distance; 0.1869 – 0.2109 in K2P).</p> </div>	https://treatment.plazi.org/id/CF0387C3D50BB158FC8BA643FE8BF939	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.		Plazi	Kajihara, Hiroshi;Tamura, Kotaro;Tomioka, Shinri	Kajihara, Hiroshi, Tamura, Kotaro, Tomioka, Shinri (2018): Histology-free Descriptions for Seven Species of Interstitial Ribbon Worms in the Genus Ototyphlonemertes (Nemertea: Monostilifera) from Vietnam. Species Diversity 23 (1): 13-37, DOI: 10.12782/specdiv.23.13, URL: http://dx.doi.org/10.12782/specdiv.23.13
CF0387C3D506B159FF0DA602FECBFC2A.text	CF0387C3D506B159FF0DA602FECBFC2A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ototyphlonemertes (duplex) Diesing 1863	<div><p>Ototyphlonemertes (duplex) envalli sp. nov.</p> <p>(Fig. 5)</p> <p>Material examined. Four specimens, all from Dam Trong; ICHUM 5351 (holotype); ICHUM 5352–5354 (three paratypes).</p> <p>Description. Body length 5.0– 6.2 mm (6.2 mm in holotype), width 0.2 mm (n =3). Epidermis whitish (Fig. 5A); cephalic furrow post-cerebrally; tissues around brain reddish (Fig. 5B, C); cirri present in both anterior and posterior ends of body. Foregut-intestine junction distinct; foregut region translucent; intestine tinged with pale-yellow to whitish color (Fig. 5A). Statoliths bipartite (Fig. 5D, E), 8.5–9.2 µm in diameter (8.5 µm in holotype) (n =3); statocyst 23.8–25.6 µm in diameter (23.8 µm in holotype) (n =3). Proboscis diaphragm short (Fig. 5F); two accessory stylet pouches, lateral to central-stylet basis, each containing two accessory stylets (n =3); in two of three specimens examined, one of two accessory-stylet pouches contained one accessory stylet that directed backward; other accessory stylets directed forward; middle chamber bulbous (Fig. 5F); central stylet smooth (Fig. 5G, H), 23.9–31.6 µm long (23.9 µm in holotype); basis 29.6–31.6 µm long (29.6 µm in holotype), 7.4–8.1 µm wide (7.4 µm in holotype) (n =3); basis length/ width ratio 3.90–4.00 (4.00 in holotype) (n =3); posterior chamber opaque, without specialized anterior portion (Fig. 5B, C, F). Intestinal diverticula shallow. Mature oocytes up to 136 µm in diameter, accounting for ~35% of body width (Fig. 5B, C). Posterior adhesive plate well developed (Fig. 5I).</p> <p>Distribution. So far known only from the type locality, the island of Dam Trong, Vietnam.</p> <p>Etymology. The specific name is a noun in the genitive case, after Dr Mats Envall for his distinguished contribution to the Ototyphlonemertes systematics.</p> <p>Remarks. Ototyphlonemertes (duplex) envalli sp. nov. was sister to O. (duplex) norenburgi sp. nov. in the phylogenetic analysis (Fig. 2) and they look similar to each other. As far as the specimens observed, O. (duplex) envalli may be distinguished from O. (duplex) norenburgi in that the ratio of the oocyte diameter to the body width is smaller than in O. (duplex) envalli (oocyte / body-width ratio ~0.35) than in O. (duplex) norenburgi (oocyte/body-width ratio&gt;0.4). Whether or not this character is reliable in discriminating these two species should be investigated in future studies, because the degree of oocyte matureness might have been different among the specimens examined. Also, the squeezed method might have skewed the actual diameters of the body and oocytes.</p> </div>	https://treatment.plazi.org/id/CF0387C3D506B159FF0DA602FECBFC2A	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.		Plazi	Kajihara, Hiroshi;Tamura, Kotaro;Tomioka, Shinri	Kajihara, Hiroshi, Tamura, Kotaro, Tomioka, Shinri (2018): Histology-free Descriptions for Seven Species of Interstitial Ribbon Worms in the Genus Ototyphlonemertes (Nemertea: Monostilifera) from Vietnam. Species Diversity 23 (1): 13-37, DOI: 10.12782/specdiv.23.13, URL: http://dx.doi.org/10.12782/specdiv.23.13
CF0387C3D507B159FF36A2F1FB16FCA9.text	CF0387C3D507B159FF36A2F1FB16FCA9.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ototyphlonemertes (duplex) Diesing 1863	<div><p>Ototyphlonemertes (duplex) norenburgi sp. nov.</p> <p>(Fig. 6)</p> <p>Material examined. Two specimens, both from Dam Ngoai; ICHUM 5355 (holotype); ICHUM 5356 (paratype).</p> <p>Description. Body length 7.8 mm (paratype) to 9.0 mm (holotype), width 0.2 mm (paratype) to 0.3 mm (holotype) (n =2). Epidermis whitish (Fig. 6A, B); cephalic furrow post-cerebrally; tissues around brain reddish (Fig. 6C); cirri present in both anterior and posterior ends of body. Foregut-intestine junction not distinct (intestinal caecum possibly present). Statoliths bipartite (Fig. 6D), 8.4 µm (paratype) to 9.6 µm (holotype) in diameter (n =2); statocyst 27.9 µm (holotype) to 30.5 µm (paratype) in diameter (n =2). Proboscis diaphragm short (Fig. 6E); two accessory stylet pouches, lateral to central-stylet basis, each containing 2–3 accessory stylets (n =2); in holotype, one of two accessorystylet pouch contained three accessory stylets all directing forward; another accessory-stylet pouch contained two accessory stylets each directing forward and backward; paratype had two accessory stylets per pouch both directing forward; middle chamber bulbous; central stylet smooth (Fig. 6E, F), 28.3 µm (holotype) to 33.0 µm (paratype) long; basis 26.4 µm (paratype) to 29.1 µm (holotype) long, 7.5 µm (holotype) to 9.3 µm (paratype) wide (n =2); basis length width ratio 2.84 (paratype) to 3.88 (holotype) (n =2); posterior chamber opaque, without specialized anterior portion. Intestinal diverticula shallow. Posterior adhesive plate containing cells with orange contents. Mature oocytes up to 70 µm in diameter, accounting for more than 40% of body width (Fig. 6C).</p> <p>Distribution. Our unpublished sequence data indicate that O. (duplex) norenburgi sp. nov. is also distributed in Onnason, Okinawa-jima island, although it was recovered only from Dam Ngoai in the present study.</p> <p>Etymology. The specific name is a noun in the genitive case, after the eminent nemertean biologist Dr Jon Laurence Norenburg at the Department of Invertebrate Zoology, National Museum of Natural History, Smithsonian Institution, USA, in respect of his distinguished achievement and contribution to the ribbon-worm systematics, including that of Ototyphlonemertes, as well as other interstitial animals.</p> <p>Remarks. In the resulting phylogenetic tree, O. (duplex) norenburgi was sister to O. (duplex) envalli (Fig. 2). Morphologically, O. (duplex) norenburgi may be distinguished from O. (duplex) envalli by the larger oocyte size relative to the body width: the oocyte/body-width ratio exceeds 0.4 in O. (duplex) norenburgi, while it is around 0.35 in O. (duplex) envalli [but see Remarks for O. (duplex) envalli above]. From O. (duplex) chernyshevi, O. (duplex) norenburgi may be distinguished by its thinner stylet basis: the basis length/width ratio was 2.84–3.88 in O. (duplex) norenburgi, while it was 2.28–2.80 in O. (duplex) chernyshevi.</p> </div>	https://treatment.plazi.org/id/CF0387C3D507B159FF36A2F1FB16FCA9	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.		Plazi	Kajihara, Hiroshi;Tamura, Kotaro;Tomioka, Shinri	Kajihara, Hiroshi, Tamura, Kotaro, Tomioka, Shinri (2018): Histology-free Descriptions for Seven Species of Interstitial Ribbon Worms in the Genus Ototyphlonemertes (Nemertea: Monostilifera) from Vietnam. Species Diversity 23 (1): 13-37, DOI: 10.12782/specdiv.23.13, URL: http://dx.doi.org/10.12782/specdiv.23.13
CF0387C3D507B15BFC4AA273FBB2FEA1.text	CF0387C3D507B15BFC4AA273FBB2FEA1.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ototyphlonemertes (macintoshi) Diesing 1863	<div><p>Ototyphlonemertes (macintoshi) ani Chernyshev, 2007</p> <p>(Fig. 7)</p> <p>Ototyphlonemertes (Norenburgia) ani Chernyshev, 2007: 196–199, figs 1, 2.</p> <p>Ototyphlonemertes lactea (not of Corrêa 1954): Leasi et al. 2016: 1393, fig. 4a, network L3 (139, 160, 180).</p> <p>Material examined. Eight specimens, all from Dam Ngoai; ICHUM 5357–5364.</p> <p>Description. Body length 4.3–11.0 mm, width 0.3– 0.4 mm (n =8). Epidermis whitish (Fig. 7A), containing red pigment cells sporadically scattered among other epidermal cells; cephalic furrow post-cerebrally; tissues around brain reddish; cirri not found on cephalic region (n =5), 5–7 cirri found near hind end of body (n =3). Foregut-intestine junction distinct (Fig. 7A, B). Statoliths polygranular (Fig. 7 C–J), 10.9–14.7 µm in diameter (n =8), consisting of about 22 granules; statocyst 20.9–30.4 µm in diameter (n =8); additional statolith found in one specimen on single side (Fig. 7C). Proboscis anterior chamber with tactile papillae (Fig. 7L); diaphragm long (Fig. 7K, L); two accessory-stylet pouches, lateral to central-stylet basis; 2–6 accessory stylets per pouch (n =8 individuals ×2 pouches), with mode being 5 (three individuals having 5 accessory stylets in each pouch; one individual with 4 and 5 accessory stylets, another with 5 and 6 accessory stylets); of 69 accessory stylets in 8 specimens, 2 in one specimen directed forward, other 67 directing backward; central stylet (as well as accessory stylets) spiral (Fig. 7M), 28.5–46.2 µm long; basis 27.7–33.3 µm long, 4.1–6.5 µm wide (n =8), with each ridge twisting almost only once; basis length/width ratio 4.58–6.5; middle chamber antero-posteriorly elongated rectangle (Fig. 7K), with prominent diagonal muscle fibers (Fig. 7L); posterior chamber vesicular, without specialized anterior portion. Intestinal diverticula shallow and sack-like. Posterior adhesive plate with pale brown pigments.</p> <p>Distribution. Tche Bay (12°35′N, 109°20′E), Hong- Long Island, Van Phong Bay, Vietnam (Chernyshev 2007); Dam Ngoai, Vietnam (present study); Gesashi, Okinawa, Japan (Leasi et al. 2016); Shirahama, Japan (Leasi et al. 2016).</p> <p>Remarks. In the molecular phylogenetic tree, O. (macintoshi) ani was nested within a clade comprised of other OTUs representing the O. macintoshi species group (Fig. 3). The GenBank COI sequences KU230129 and KU230131 (from Shirahama, Japan: Leasi et al. 2016), as well aKU230130 (from Gesashi, Okinawa, Japan: Leasi et al. 2016), all identified as Ototyphlonemertes lactea, turned out to represent O. (macintoshi) ani. It was the most abundant species in this study.</p> </div>	https://treatment.plazi.org/id/CF0387C3D507B15BFC4AA273FBB2FEA1	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.		Plazi	Kajihara, Hiroshi;Tamura, Kotaro;Tomioka, Shinri	Kajihara, Hiroshi, Tamura, Kotaro, Tomioka, Shinri (2018): Histology-free Descriptions for Seven Species of Interstitial Ribbon Worms in the Genus Ototyphlonemertes (Nemertea: Monostilifera) from Vietnam. Species Diversity 23 (1): 13-37, DOI: 10.12782/specdiv.23.13, URL: http://dx.doi.org/10.12782/specdiv.23.13
CF0387C3D505B15BFC72A06AFAEBFA73.text	CF0387C3D505B15BFC72A06AFAEBFA73.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ototyphlonemertes (parmula) Diesing 1863	<div><p>Ototyphlonemertes (parmula) lei sp. nov.</p> <p>(Fig. 8)</p> <p>Material examined. One specimen from Dam Ngoai; ICHUM 5365 (holotype).</p> <p>Description. Body length 4.9 mm, width 0.2 mm (n =1). Epidermis whitish (Fig. 8A); cephalic furrow postcerebrally; tissues around brain slightly reddish; cirri present in both anterior and posterior ends of body. Foregut–in-testine junction not distinct (Fig. 8B). Statolith polygranular (Fig. 8C), 9.3 µm in diameter (n =1), consisting of about 7 granules; statocyst 15.9 µm in diameter (n =1). Proboscis diaphragm short (Fig. 8B); two accessory stylet pouches, lateral to central-stylet basis, each containing 4 and 5 accessory stylets, all directing forward; central stylet (as well as accessory stylets) spiral (Fig. 8D), 54.7 µm long; basis 43.2 µm long, 8.0 µm wide (Fig. 8D), with each ridge twisting about 1.5 times; basis length/width ratio 5.4; middle chamber short; posterior chamber vesicular, without specialized anterior portion (Fig. 8B). Intestinal diverticula deep. Posterior adhesive plate with cells containing dark contents. Gonads found in posterior half of intestinal region, alternating more or less regularly with intestinal lateral diverticula.</p> <p>Distribution. So far known only from the type locality, the island of Dam Ngoai, Vietnam.</p> <p>Etymology. The specific name is a noun in the genitive case, after Dr Doan Dung Le at the Ho Chi Minh City University of Food Industry, Vietnam, who kindly coordinated HK’s sampling trip to Phu Quoc.</p> <p>Remarks. In the phylogenetic tree, Ototyphlonemertes (parmula) lei sp. nov. appeared to be sister to the rest of the O. parmula species group (Fig. 2), which was mostly represented by the Fila morpho-group of Leasi et al. (2016).</p> </div>	https://treatment.plazi.org/id/CF0387C3D505B15BFC72A06AFAEBFA73	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.		Plazi	Kajihara, Hiroshi;Tamura, Kotaro;Tomioka, Shinri	Kajihara, Hiroshi, Tamura, Kotaro, Tomioka, Shinri (2018): Histology-free Descriptions for Seven Species of Interstitial Ribbon Worms in the Genus Ototyphlonemertes (Nemertea: Monostilifera) from Vietnam. Species Diversity 23 (1): 13-37, DOI: 10.12782/specdiv.23.13, URL: http://dx.doi.org/10.12782/specdiv.23.13
CF0387C3D505B15FFC93A4B8FE6CFF1E.text	CF0387C3D505B15FFC93A4B8FE6CFF1E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ototyphlonemertes (parmula) Diesing 1863	<div><p>Ototyphlonemertes (parmula) nakaoae sp. nov.</p> <p>(Figs 9, 10)</p> <p>Material examined. Five specimens: ICHUM 5366 (holotype) (from Dam Trong); four paratypes, ICHUM 5367 (from Dam Trong), ICHUM 5368–5370 (from Dam Ngoai).</p> <p>Description. Body length 4.1–6.2 mm (6.2 mm in holotype), width 0.2–0.3 mm (0.2 mm in holotype) (n =4). Epidermis whitish (Fig. 9A, D, E); cephalic furrow postcerebrally; tissues around brain slightly reddish (Figs 9B, E, F, 10A, B); cirri present in both anterior and posterior ends of body; cephalic cirrus formula (cf. Norenburg 1988b) observed in two specimens: A=2+2, B=0, C=9, D=6, E=4, tail= 14 in ICHUM 5368 (paratype); A=0, B=2, C=7+5, D=4+5, tail= 8 in ICHUM 5369 (paratype). Foregut–in-testine junction not markedly distinct. Statolith polygranular (Fig. 10 C–F), 8–11 µm (9 µm in holotype) in diameter (n =4), consisting of 7–8 (7 in holotype) granules; statocyst 19.2–26.1 µm (19.2 µm in holotype) in diameter (n =4). Proboscis diaphragm short (Figs 9F, 10A, B, G); gland-secretion ring situated posterior to hind end of basis; accessory-stylet pouches two, each containing 2–5 accessory stylets (3 in each in holotype) per pouch (n =4 individuals ×2 pouches), directing both forward and backward; central stylet (as well as accessory stylets) spiral (Fig. 10 H–K), 32–46 µm (32 µm in holotype) long; basis 39–52 µm (42 µm in holotype) long, 8–12 µm (8µm in holotype) wide (n =4), with each ridge twisting 1.5–2 (1.5 in holotype) times; basis length/width ratio 4.27–5.16 (5.16 in holotype); middle chamber bulbous; posterior chamber opaque, with specialized anterior part (Figs 9B, F, 10A, B). Intestinal diverticula deep. Posterior adhesive plate containing cells with orange contents (Fig. 9C). Gonads found in posterior 1/2 to 3/4 of intestinal region, alternating more or less regularly with intestinal lateral diverticula.</p> <p>Distribution. So far recorded from the islands of Dam Trong (type locality) and Dam Ngoai, Vietnam.</p> <p>Etymology. The specific name is a noun in the genitive case, after the Japanese ostracode biologist Dr Yuriko Nakao at Nihon University, Japan, who devotedly arranged our sampling trip to Phu Quoc.</p> <p>Remarks. In the phylogenetic tree, Ototyphlonemertes (parmula) nakaoae sp. nov. was sister to O. (parmula) tsukagoshii sp. nov. (Fig. 2). Out of the seven species discovered in this study, O. (parmula) nakaoae turned out to be the only species that occurred at both the localities surveyed, the islands of Dam Trong and Dam Ngoai. Following O. (macintoshi) ani, it was the second most abundant species recovered in the present survey.</p> </div>	https://treatment.plazi.org/id/CF0387C3D505B15FFC93A4B8FE6CFF1E	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.		Plazi	Kajihara, Hiroshi;Tamura, Kotaro;Tomioka, Shinri	Kajihara, Hiroshi, Tamura, Kotaro, Tomioka, Shinri (2018): Histology-free Descriptions for Seven Species of Interstitial Ribbon Worms in the Genus Ototyphlonemertes (Nemertea: Monostilifera) from Vietnam. Species Diversity 23 (1): 13-37, DOI: 10.12782/specdiv.23.13, URL: http://dx.doi.org/10.12782/specdiv.23.13
CF0387C3D501B15FFF2CA025FD06F919.text	CF0387C3D501B15FFF2CA025FD06F919.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Ototyphlonemertes (parmula) Diesing 1863	<div><p>Ototyphlonemertes (parmula) tsukagoshii sp. nov.</p> <p>(Fig. 11)</p> <p>Material examined. Two specimens, both from Dam Ngoai; ICHUM 5371 (holotype); ICHUM 5372 (paratype).</p> <p>Description. Body length 2.5 mm (paratype) to 4.0 mm (holotype), width 0.1 mm (paratype) to 0.2 mm (holotype) (n =2). Epidermis whitish (Fig. 11A); cephalic furrow postcerebrally; tissues around brain (and even in precerebral region in one of two specimens examined) reddish (Fig. 11B, C); cirri present in both anterior and posterior ends of body; cephalic cirrus formula (cf. Norenburg 1988b) observed in two specimens: A=2, B=0, C=8, D=?, E=?, tail= 12 in holotype; A=2, B=0, C=5+6, D=6+10, E=3, tail= 10 in paratype. Foregut–intestine junction indistinct. Statolith polygranular (Fig. 11D, E), 9.5 µm in diameter (n =2), consisting of 6 granules; statocyst 23.5 µm (holotype) to 28.4 µm (paratype) in diameter (n =2). Proboscis anterior chamber with wart-like papillae (Fig. 11F); diaphragm short (Fig. 11F); gland secretion ring situated posterior to hind end of basis; accessory-stylet pouches two, each containing 2–3 accessory stylets directing both forward and backward; central stylet (as well as accessory stylets) spiral (Fig. 11G, H), 35.0 µm (paratype) to 40.2 µm (holotype) long; basis 37.1 µm (paratype) to 40.2 µm (holotype) long, 8.3 µm (paratype) to 11.2 µm (holotype) wide (n =2), with each ridge twisting 3 times; basis length/width ratio 3.59 (holotype) to 4.47 (paratype); middle chamber bulbous (Fig. 11F); posterior chamber opaque, with specialized anterior part (Fig. 11B, C). Intestinal diverticula deep. Posterior adhesive plate containing cells with orange contents.</p> <p>Distribution. So far only recorded from the type locality, Dam Ngoai, Vietnam.</p> <p>Etymology. The specific name is a noun in the genitive case, after the Japanese ostracode systematist Professor Akira Tsukagoshi at Shizuoka University, Japan, who organized our sampling trip to Phu Quoc.</p> <p>Remarks. In the phylogenetic tree, Ototyphlonemertes (parmula) tsukagoshii sp. nov. was sister to O. (parmula) nakaoae sp. nov. (Fig. 2). Ototyphlonemertes (parmula) tsukagoshii differs from O. (parmula) nakaoae by the smaller body length (2.5–4.0 mm vs. 4.1–6.2 mm), fewer number of statolith granules (6 vs. 7–8), and greater number of styletridge twists (3 vs. 1.5–2). Also, O. (parmula) tsukagoshii tends to be more reddish in the external appearance, especially in the brain region, than O. (parmula) nakaoae.</p> </div>	https://treatment.plazi.org/id/CF0387C3D501B15FFF2CA025FD06F919	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.		Plazi	Kajihara, Hiroshi;Tamura, Kotaro;Tomioka, Shinri	Kajihara, Hiroshi, Tamura, Kotaro, Tomioka, Shinri (2018): Histology-free Descriptions for Seven Species of Interstitial Ribbon Worms in the Genus Ototyphlonemertes (Nemertea: Monostilifera) from Vietnam. Species Diversity 23 (1): 13-37, DOI: 10.12782/specdiv.23.13, URL: http://dx.doi.org/10.12782/specdiv.23.13
