identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
03E42F1FFF96FF8743EDFADEE93CF87B.text	03E42F1FFF96FF8743EDFADEE93CF87B.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Psammococconeis	<div><p>Psammococconeis and Amphicocconeis taxa, in historical order</p> <p>Psammococconeis disculoides (Hustedt) M. Garcia (2001: 311, figs 12–25).</p> <p>Basionym:— Cocconeis disculoides Hustedt (1955: 17, pl.5 figs 8–11, pl.7 fig.8) after LM examination of slide Zt3,24 (Garcia 2001: fig. 15).</p> <p>Psammococconeis brasiliensis M. Garcia (2001: 309, 311, figs 1–11).</p> <p>Holotype:— ICN 91485 (slide) (Garcia 2001: 311).</p> <p>Lectotype:—BM 98352 [following Edgley A. César (The Natural History Museum), curator of Diatoms, there’s no record of this slide being received by BM, so it’s presumably lost].</p> <p>See comments on the SEM type material re-examination (ICN n° 91485).</p> <p>Amphicocconeis disculoides (Hustedt) De Stefano &amp; Marino (2003: 362, figs 1–32).</p> <p>Basionym:— Cocconeis disculoides Hustedt (1955: 17, pl. 5 figs 8–11, pl. 7 fig. 8).</p> <p>Homotypic synonyms:— Cocconeis disculoides Hustedt (1955); Psammococconeis disculoides (Hustedt) M. Garcia (2001).</p> <p>Amphicocconeis debesii (Hustedt) De Stefano (2006: 442, figs 33–53).</p> <p>Basionym and Homotypic synonym:— Cocconeis debesi Hustedt (1933: 344, fig 798).</p> <p>Amphicocconeis mascarenica Riaux-Gobin &amp; Compère (2011: 176, figs 1, 7–27, 39–41).</p> <p>Holotype:— SEM stub reference: ‘A 24/01/2007 ’ in collection C. Riaux-Gobin.</p> <p>Paratypes:— Slide BM 101389 deposited in the National History Museum (London, UK), slide ZU6/ 81 in Hustedt collection (Bremerhaven, Germany), slide BR 4158 in National Botanic Garden of Belgium (BR) and slide REU 5 in collection C. Riaux-Gobin.</p> <p>Amphicocconeis rodriguensis Riaux-Gobin &amp; Al-Handal in Riaux-Gobin et al. (2011: 181, 182,?fig. 6, figs 28–38, 45–50). Holotype:— SEM stub reference: ‘2 27/02/2009 ’ in collection C. Riaux-Gobin.</p> <p>Amphicocconeis discrepans (A.W.F.Schmidt) Riaux-Gobin, Witkowski, Ector &amp; Igersheim (2018: 576, table 2, figs 9–22).</p> <p>Basionym:— Cocconeis discrepans A.W.F. Schmidt in Schmidt et al. (1874–1959, Atlas der Diatomaceenkunde: pl. 193, figs 26–28; Cleve 1895:196).</p> <p>Remarks:—The observed material consisted of a piece of a broken slide covered with mica from the Grunow collection in Vienna. This material (869 W-1901/3162) corresponds to the Grunow capsule collection of Navicula ovulum: collection Grunow N° 869, acquisition by the Herb. Mus. Palat. Vindob. in 1901 under the number 3162. This sample is from the locality Porto Subzanski, Sansego. From this material a SEM stub W Krypto 2017-0003880 was deposited in Naturhistorisches Museum Wien (W), as the holotype of Cocconeis subzanskiensis Riaux-Gobin, Witkowski, Ector &amp; Igersheim (2018: 587, figs 48–65).</p> <p>Amphicocconeis sp. 1 in Riaux-Gobin et al. (2018: 575, table 2, figs 3–5; SV not found). Amphicocconeis sp. 2 in Riaux-Gobin et al. (2018: 576, table 2, figs 6–8; RV not found).</p> </div>	https://treatment.plazi.org/id/03E42F1FFF96FF8743EDFADEE93CF87B	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	Riaux-Gobin, Catherine;Garcia, Marinês;Witkowski, Andrzej;Saenz-Agudelo, Pablo;Coste, Michel;Daniszewska-Kowalczyk, Genowefa	Riaux-Gobin, Catherine, Garcia, Marinês, Witkowski, Andrzej, Saenz-Agudelo, Pablo, Coste, Michel, Daniszewska-Kowalczyk, Genowefa (2021): New Amphicocconeis (Bacillariophyta) from Raivavae and Tahiti Islands (South Pacific) and Porto Belo (Brazil), with re-examination of Psammococconeis. Phytotaxa 513 (1): 30-54, DOI: 10.11646/phytotaxa.513.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.513.1.2
03E42F1FFF9CFF8043EDFD7CE911FCF7.text	03E42F1FFF9CFF8043EDFD7CE911FCF7.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Amphicocconeis	<div><p>Genus: Amphicocconeis</p> <p>Synonym: Psammococconeis brasiliensis M.Garcia</p> <p>Remarks: The SVVC of this taxon remains to be decrypted. Furthermore, the RV striation has to be better defined (i.e., different stria densities are illustrated in fig. 4 and fig. 7 in Garcia 2001), for these reasons this taxon is not included in the cladistics analysis (Fig. 73).</p></div> 	https://treatment.plazi.org/id/03E42F1FFF9CFF8043EDFD7CE911FCF7	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	Riaux-Gobin, Catherine;Garcia, Marinês;Witkowski, Andrzej;Saenz-Agudelo, Pablo;Coste, Michel;Daniszewska-Kowalczyk, Genowefa	Riaux-Gobin, Catherine, Garcia, Marinês, Witkowski, Andrzej, Saenz-Agudelo, Pablo, Coste, Michel, Daniszewska-Kowalczyk, Genowefa (2021): New Amphicocconeis (Bacillariophyta) from Raivavae and Tahiti Islands (South Pacific) and Porto Belo (Brazil), with re-examination of Psammococconeis. Phytotaxa 513 (1): 30-54, DOI: 10.11646/phytotaxa.513.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.513.1.2
03E42F1FFF9CFF8043EDFE08EAAAFDD7.text	03E42F1FFF9CFF8043EDFE08EAAAFDD7.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Amphicocconeis brasiliensis (M. Garcia) M. Garcia & Riaux-Gobin 2021	<div><p>Amphicocconeis brasiliensis (M.Garcia) M.Garcia &amp; Riaux-Gobin comb. nov. (Garcia 2001: figs 1–11)</p> <p>Division: Bacillariophyta</p></div> 	https://treatment.plazi.org/id/03E42F1FFF9CFF8043EDFE08EAAAFDD7	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	Riaux-Gobin, Catherine;Garcia, Marinês;Witkowski, Andrzej;Saenz-Agudelo, Pablo;Coste, Michel;Daniszewska-Kowalczyk, Genowefa	Riaux-Gobin, Catherine, Garcia, Marinês, Witkowski, Andrzej, Saenz-Agudelo, Pablo, Coste, Michel, Daniszewska-Kowalczyk, Genowefa (2021): New Amphicocconeis (Bacillariophyta) from Raivavae and Tahiti Islands (South Pacific) and Porto Belo (Brazil), with re-examination of Psammococconeis. Phytotaxa 513 (1): 30-54, DOI: 10.11646/phytotaxa.513.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.513.1.2
03E42F1FFF9CFF8043EDFC78EBC8F957.text	03E42F1FFF9CFF8043EDFC78EBC8F957.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Amphicocconeis catharinensis Riaux-Gobin & Garcia. SEM	<div><p>Amphicocconeis catharinensis Riaux-Gobin &amp; Garcia. SEM, Figs 7–17. Table 1</p> <p>Description:— SEM.Valves robust, oval-elliptic, with round apices. Valve length 18 ± 3 µm, 14–22 µm. Valve width 11 ± 2 µm, 9–13 µm; n = 10 (SEM) (Table 1). SV: surface convex, striae radiate and regularly spaced, uniseriate, composed of large rectangular areolae. On the valve face, each areola is positioned on the bottom of a depression with opening bordered by digit flaps (Figs 8–9). Areolae are internally closed by hymenes (Figs 10–12). On the mantle, each oblong areola is separated from the next by a granular and concave plain structure of triangular to rectangular shape (Figs 8–9, arrows). Short marginal striae not observed. 11 ± 1 SV stria in 10 µm. SVVC relatively narrow with big pores corresponding to each areola. RV: surface flat, striae radiate, composed of macro-areolae (large along the margin, short along the raphe, with short areolae dispersed in between, Fig. 13). Terminal-distal raphe endings strongly curved on same side (Figs 13, 15). Proximal raphe endings slightly enlarged and curved on same side (opposite to the terminal raphe endings, Fig. 16). 26 ± 2.5 RV stria in 10 µm. RVVC 1/4 of the valve width, with marginal transapical oblong pores corresponding to each macro-alreola (Fig. 17, twin arrowheads).</p> <p>Remarks:—The SV of Amphicocconeis catharinensis was illustrated as being the SV of Psammococconeis disculoides in Garcia (2001: figs 21, 23). The specific ornamentation of the SV mantle, with a concave structure in between each oblong areola (Figs 8–9) seems unique. The RV of A. catharinensis has some similarities with that of A. disculoides and A. debesi (large area with short radiate macro-areolae), but these short areolae in median-area are in very low density in A. catharinensis (Fig. 13), furthermore the SV of A. catharinensis is highly dissimilar to that of Amphicocconeis disculoides (Hustedt) De Stefano &amp; Marino (figs 2–3, 6– 7 in De Stefano &amp; Marino 2003; Figs 1).</p> <p>Type locality:—Zimbros, Peninsula do Porto Belo, Santa Catarina State, Brazil.</p> <p>Holotype:—Stub 4 19/06/2020, BM001222889. Holotype specimen illustrated in Fig. 7.</p> <p>Etymology:—The epithet refers to the location of the type habitat of this taxon in Brazil (locality Santa Catarina State).</p></div> 	https://treatment.plazi.org/id/03E42F1FFF9CFF8043EDFC78EBC8F957	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	Riaux-Gobin, Catherine;Garcia, Marinês;Witkowski, Andrzej;Saenz-Agudelo, Pablo;Coste, Michel;Daniszewska-Kowalczyk, Genowefa	Riaux-Gobin, Catherine, Garcia, Marinês, Witkowski, Andrzej, Saenz-Agudelo, Pablo, Coste, Michel, Daniszewska-Kowalczyk, Genowefa (2021): New Amphicocconeis (Bacillariophyta) from Raivavae and Tahiti Islands (South Pacific) and Porto Belo (Brazil), with re-examination of Psammococconeis. Phytotaxa 513 (1): 30-54, DOI: 10.11646/phytotaxa.513.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.513.1.2
03E42F1FFF9CFF8143EDF918EFD4FC67.text	03E42F1FFF9CFF8143EDF918EFD4FC67.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Amphicocconeis	<div><p>Amphicocconeis clypeus Riaux-Gobin &amp; Witkowski sp. nov. SEM Figs 18–34. Table 1</p> <p>Description:— SEM.Valves robust, oval-elliptic, with round apices (Figs 18–19). Valve length 19 ± 3 µm, 15–27 µm. Valve width 11 ± 2 µm, 9–14 µm; L/ W 1.71 ± 0.1; n = 29 (SEM) (Table 1). SV: convex, striae radiate and regularly spaced, to very slightly denser on apices, uniseriate with marginal denser areolae (with short striae) (Fig. 18). SV striae 11 ± 0.8 in 10 µm, 9–11 in 10 µm. SV: sternum narrow and straight, slightly convex. Areolae mostly round to oblong-elliptic, crater-like, with an irregular oblong-narrow and sinuous opening, similar to a sepia eye (Fig. 20). Often (i.e., 25% of specimens) presence of small round warts around the ‘sepia-like’ openings. Areolae internally closed by a convex hymen (Fig. 23), with no apparent slits. On both sides of the SV sternum, one straight row of quincunx and regular oblong areolae. Marginal areolae also arranged along a regular row, while in mid-half valve the areolae are of irregular length and position. The SVVC is open and extended (1/3 of the valve), composed of rows of large and round apertures (Figs 18, 21–22). RV: robust and flat, striae radiate, regularly spaced. Each stria composed of two macroareolae: a short macroareola near the raphe and a longer marginal one. Externally and internally, a large lunarshape space devoid of ornamentation (Figs 24–25, 27). RV striae: 27 ± 2 in 10 µm. Raphe filiform and straight. External proximal raphe endings relatively close to each other and slightly deflected in the same side (Fig. 24), internally simple, slightly expanded, rather distant and coaxial (Figs 26–27). Central area small and rhomboid (Fig. 26, internal view). Striae strongly radiate at mid-valve. Terminal raphe fissure largely hooked on the mantle (Fig. 24). Helictoglossa small and unraised (Fig. 28). RVVC extended, open, with marginal rows of more or less complex small pores (27 in 10 µm, Figs 31, 32, 34), each row of pores corresponding to a RV stria, large edge devoid of ornamentation (Fig. 30). On the head pole of the RVVC, presence (in most specimens) of a ‘plow sock’-shaped structure (Figs 30, 33).</p> <p>Remarks:—15 SV were observed, with low morphological variability. Six RV were observed, among which one external view with eroded macro-areola hymenes showing the underlying advalvar side ornamentation of the RVVC (Fig. 29), and one internal view with the RVVC still in place (Fig. 25). The SV of A. clypeus sp. nov. shows some similarities with that of A. catharinensis sp. nov., but with some differences, such as the marginal short striae in A. clypeus, the mantle specific ornamentation in A. catharinensis, and the RVVC highly different within both taxa.</p> <p>Type locality:—Sample ‘Papeete 4 Holothuria ’, Tahiti Nui West coast, Arué District, North of Tombeau du Roi (S 17° 31.405′, W 149° 31.106′), collected by scraping a large specimen of Holothuria atra, intertidal environment, by C. Riaux-Gobin, 24 October 2010.</p> <p>Holotype:—Stub 1 27/04/2012, BM001222888. Holotype specimen illustrated in Fig. 18.</p> <p>Syntypes:—Slides BM101645, Natural History Museum, London, UK, ZU8/38, Hustedt collection, Bremerhaven. Type slide for Amphicocconeis clypeus from ‘Papeete 4 holoth’ yet sent to BM as the holotype of Astartiella societatis Riaux-Gobin, Witkowski &amp; Romero (2013: 421 figs 2–6, 12–29).</p> <p>Etymology:—The specific epithet clypeus refers to the SV shape resembling a robust shield.</p></div> 	https://treatment.plazi.org/id/03E42F1FFF9CFF8143EDF918EFD4FC67	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	Riaux-Gobin, Catherine;Garcia, Marinês;Witkowski, Andrzej;Saenz-Agudelo, Pablo;Coste, Michel;Daniszewska-Kowalczyk, Genowefa	Riaux-Gobin, Catherine, Garcia, Marinês, Witkowski, Andrzej, Saenz-Agudelo, Pablo, Coste, Michel, Daniszewska-Kowalczyk, Genowefa (2021): New Amphicocconeis (Bacillariophyta) from Raivavae and Tahiti Islands (South Pacific) and Porto Belo (Brazil), with re-examination of Psammococconeis. Phytotaxa 513 (1): 30-54, DOI: 10.11646/phytotaxa.513.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.513.1.2
03E42F1FFF9DFF9D43EDFBC8EA0DF9F9.text	03E42F1FFF9DFF9D43EDFBC8EA0DF9F9.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Amphicocconeis antiqua Riaux-Gobin & Garcia & Witkowski & Saenz-Agudelo & Coste & Daniszewska-Kowalczyk 2021	<div><p>Amphicocconeis antiqua Riaux-Gobin &amp; Coste sp. nov. SEM Figs 35–48; Table 1</p> <p>Description:— SEM. Valves robust, fusiform to slightly rhomboid, with ogival apices (Figs 35, 36, 39 40). Valve length 18 ± 3 µm, 15–24 µm. Valve width 10 ± 2,8 µm, 8–17 µm; L/ W 1.8 ± 0.2; n = 16 (SEM) (Table 1). SV: convex, striae radiate and regularly spaced, uniseriate (Figs 35–36). SV striae 11.5 ± 2 in 10 µm, 9–14 in 10 µm. Areolae oblong-elliptic, crater-like, with an oblong-narrow and straight opening (Fig. 37). Areolae internally closed by a convex narrow hymen. Externally, on both sides of the SV sternum, one row of cupules along an elliptic frame (Fig. 35, arrows). No marginal short-intercalary striae. SVVC open, simple with short fimbriae (Fig. 40). RV: flat with dense radiate striae, regularly spaced. Transapical striae are composed of two macro-areolae, a short and strongly bent macro-areola near the raphe, and a marginal and longer one. In between, externally and internally, a very narrow lunarshape devoid of apparent ornamentation, that can also be absent (Fig. 43). RV striae: 37 in 10 µm ± 2. Raphe filiform and straight. External proximal raphe endings somewhat expanded, distant and coaxial (Figs 43–44). Central area small and rhomboid (Fig. 44). Terminal raphe fissure largely hooked on the mantle (Fig. 42). Helictoglossae small and unraised. RVVC extended (30–50% of the valve, 39 rows of ornamentation in 10 µm), open, with marginal rows of simple pores (Figs 45–48), each row of pores corresponding to a RV stria, ornamentation present up to the edge of the RVVC (Figs 45, 48). Head pole of the RVVC indented (no ‘plow sock’ structure), foot pole of the RVVC with parallel borders from each side of the raphe (Fig. 46, arrowheads).</p> <p>Remarks:—Some differences between Amphicocconeis antiqua and A. clypeus: SV sternum with cupules in A.antiqua, giving it an elliptic shape, while narrow and straight with no ornamentation in A. clypeus. SVVC with large fimbriae in A. antiqua. RV with denser striation in A. antiqua and with a narrower void lunar-shaped space than in A. clypeus. RVVC with a different shape and striation between both taxa and with ornamentation up to its edge in A. antiqua. The SV of A. antiqua is somehow close to that in A. disculoides, but the SVVC are dissimilar within both taxa, and the RVVC is open in A. antiqua. A taxon close to A. antiqua is present in Zimbros (Peninsula do Porto Belo, Santa Catarina, Brazil), and will need further examination (i.e., of the RV and SV in external view) before definitive classification.</p> <p>Type locality:—Sample ‘Papeete 4 Holothuria ’, Tahiti Nui West coast, Arué District, North of Tombeau du Roi (17◦31.405′S, 149◦31.106′W), collected by scraping a specimen of Holothuria atra, depth 20 cm, by C. Riaux-Gobin, 24 October 2010.</p> <p>n = SEM observed specimens</p> <p>Holotype:—Stub 5 18/05/2012, BM001222885. Holotype specimen illustrated in Fig. 35. Syntypes:—Slides BM101645, Natural History Museum, London, UK, ZU8/38, Hustedt collection, Bremerhaven.</p> <p>And stub 2 27/04/2012 (Stub made from the sample ‘Papeete 4 Holothuria ’) BM001222886. Specimen illustrated in</p> <p>Fig. 36.</p> <p>Etymology:—The specific epithet antiqua refers to the ogival apices of the frustule, remembering gothic architecture.</p> </div>	https://treatment.plazi.org/id/03E42F1FFF9DFF9D43EDFBC8EA0DF9F9	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	Riaux-Gobin, Catherine;Garcia, Marinês;Witkowski, Andrzej;Saenz-Agudelo, Pablo;Coste, Michel;Daniszewska-Kowalczyk, Genowefa	Riaux-Gobin, Catherine, Garcia, Marinês, Witkowski, Andrzej, Saenz-Agudelo, Pablo, Coste, Michel, Daniszewska-Kowalczyk, Genowefa (2021): New Amphicocconeis (Bacillariophyta) from Raivavae and Tahiti Islands (South Pacific) and Porto Belo (Brazil), with re-examination of Psammococconeis. Phytotaxa 513 (1): 30-54, DOI: 10.11646/phytotaxa.513.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.513.1.2
03E42F1FFF81FF9843EDF972E8F4FD1F.text	03E42F1FFF81FF9843EDF972E8F4FD1F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Amphicocconeis ruatara Riaux-Gobin & Garcia & Witkowski & Saenz-Agudelo & Coste & Daniszewska-Kowalczyk 2021	<div><p>Amphicocconeis ruatara Riaux-Gobin sp. nov. SEM Figs 49–61. Table 1</p> <p>Description:— SEM. Valves oblong-elliptic to elongate, with slightly rostrate apices (Fig. 51). Axially bent in cingular view. Valve length 15 ± 2 µm, 14–17 µm. Valve width 6 ± 2 µm, 6–8 µm; L/ W 6.2 ± 0.8; n = 54 (SEM) (Table 1). SV convex with a concave narrow sternum (Figs 49–50). One row of large and transapically elongated areolae on each part of the sternum, one marginal row of dense and short areolae and, in between these two sectors, short areolae arranged more or less in quincunx. Often a low crest (or crista marginalis) delineating the marginal row of dense and short areolae, as a sort of short mantle (Figs 49–50, arrow). SV striae parallel in mid-valve, slightly radiate and denser on apices, uniseriate. SV striae 22 ± 3 in 10 µm. SVVC open, narrow (or sometimes larger), composed of short fused fimbriae (27 in 10 µm), separated from each other by an irregularly biseriate row of pores (Figs 52–54), festooned edge. Head pole of the SVVC with very short fimbriae. RV flat, dense striae composed of one narrow macro-areola, short supplementary marginal striae on mid-valve (Fig. 55). Raphe filiform. Proximal raphe endings externally simple and relatively close to each other, central nodule slightly elevated externally and unique for the genus (Figs 55–56, 59). Terminal raphe endings largely hooked on the mantle (Fig. 58). Raphe sternum somewhat elevated internally, with raphe slit slightly undulating. Proximal raphe endings simple and coaxial internally (Fig. 57). Central area small. RV striae 51 ± 6.5 in 10 µm; 42–60 in 10 µm. RVVC open, 30–50% valve width, 51 rows of uniseriate pores in 10 µm (Figs 60–61).</p> <p>Holotype:—Stub12 12/02/2020, BM001222887. Holotype specimen illustrated in Fig. 49.</p> <p>Syntypes:—Whole slide from the sample RAI 20, deposited at NHM (BM 81917 material).</p> <p>Etymology:—The specific epithet ruatara refers to the Ruatara rock (Raivavae Isl.) on the intertidal coastal environment where was first found the new taxon.</p> <p>Locality:—Ruatara rock (‘Rocher de l’Homme’), Raivavae (Austral Islands, South</p> <p>Pacific), RAI 20 and RAI 18 (intertidal red macroalgal turfs on fissures of the rock). Geo localization: S 23° 51.274’; W 147° 39.595’; T°C 23°.7, salinity &lt;40‰. Sampled by C. Riaux-Gobin on 08 October 2018.</p> <p>Remarks:—Some similarities of A. ruatara sp. nov. with A.discrepans (A.W.F.Schmidt) Riaux-Gobin, Witkowski, Ector &amp; Igersheim (Riaux-Gobin et al. 2018: figs 15–16), but with some differences: The axial rows of SV areolae on each part of the sternum are larger on A. ruatara than on A. discrepans, along with (in most cases) the presence of a crista marginalis delineating a narrow mantle on the new taxon. The SVVC in A. ruatara has short fused fimbriae with irregularly uni- to biseriate rows of pores, in contrast with a marginal row of one small pore in A. discrepans. The RVVC of A. ruatara shows dense uniseriate rows of pores (51 in 10 µm), while showing one marginal and elongate pore in A. discrepans (30–31 in 10 µm; Riaux-Gobin et al. 2018: figs 17–20).</p> </div>	https://treatment.plazi.org/id/03E42F1FFF81FF9843EDF972E8F4FD1F	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	Riaux-Gobin, Catherine;Garcia, Marinês;Witkowski, Andrzej;Saenz-Agudelo, Pablo;Coste, Michel;Daniszewska-Kowalczyk, Genowefa	Riaux-Gobin, Catherine, Garcia, Marinês, Witkowski, Andrzej, Saenz-Agudelo, Pablo, Coste, Michel, Daniszewska-Kowalczyk, Genowefa (2021): New Amphicocconeis (Bacillariophyta) from Raivavae and Tahiti Islands (South Pacific) and Porto Belo (Brazil), with re-examination of Psammococconeis. Phytotaxa 513 (1): 30-54, DOI: 10.11646/phytotaxa.513.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.513.1.2
03E42F1FFF84FF9843EDFD50EF52FC3E.text	03E42F1FFF84FF9843EDFD50EF52FC3E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Amphicocconeis mascarenica Riaux-Gobin & Compere 2011	<div><p>Amphicocconeis cf. mascarenica Riaux-Gobin &amp; Compère, 2011 (Figs 62–67). Table 1</p> <p>Remarks:—The measurements and features of the specimens from the Pacific islands (Raivavae, Tahiti and Moorea Isls, Table 1) are close to those from the Mascarenes (Riaux-Gobin et al. 2011: tabl. 2), i.e., with valvocopulae with regularly biseriate rows of simple pores. This taxon is dominant on the Society Archipelago (Tahiti and Moorea Isls) as well as in the Austral Archipelago (Raivavae Isl.). In Tuamotu and Marquesas Archipelagos, Amphicocconeis are less abundant, but with, here again, A. cf. mascarenica as dominant taxon (pers. obs.).</p> </div>	https://treatment.plazi.org/id/03E42F1FFF84FF9843EDFD50EF52FC3E	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	Riaux-Gobin, Catherine;Garcia, Marinês;Witkowski, Andrzej;Saenz-Agudelo, Pablo;Coste, Michel;Daniszewska-Kowalczyk, Genowefa	Riaux-Gobin, Catherine, Garcia, Marinês, Witkowski, Andrzej, Saenz-Agudelo, Pablo, Coste, Michel, Daniszewska-Kowalczyk, Genowefa (2021): New Amphicocconeis (Bacillariophyta) from Raivavae and Tahiti Islands (South Pacific) and Porto Belo (Brazil), with re-examination of Psammococconeis. Phytotaxa 513 (1): 30-54, DOI: 10.11646/phytotaxa.513.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.513.1.2
