identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
038287ABFF9AFFB3012B051BC7ABF8F9.text	038287ABFF9AFFB3012B051BC7ABF8F9.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Listrura depinnai Villa-Verde & Ferrer & Malabarba 2013	<div><p>Listrura depinnai, new species</p><p>Figures 1, 2; Table 1</p><p>Holotype.— UFRGS 17135, 30.8 mm SL, Brazil, Rio Grande do Sul state, Municipality of Viamão, Águas Claras, Rio Gravataí basin, Laguna dos Patos system, swamp on the wildlife reserve Refúgio de Vida Silvestre Banhado dos Pachecos, 30 ° 05'52"S, 50 ° 51'05"W, J. Wingert and J. P. Miranda, 21 October 2011.</p><p>Paratype.— UFRGS 16383, 1, 27.7 mm SL, collected with the holotype.</p><p>Diagnosis.— Listrura depinnai is easily distinguished from its congeners by the following putative autapomorphies: the region below the midline of the flank is covered by several spots (Fig. 1, vs. unpigmented in L. boticario, L. camposi, L. costai, and L. tetraradiata or with a slender row of small spots in L. nematopteryx and L. picinguabae); the caudal peduncle, including procurrent-ray folds, is deeper than the preanal portion of body (Fig. 1 top, vs. approximately same depth); and there is a conspicuous intumescence adjacent to the posterodorsal margin of the pectoral-fin base (Fig. 1 middle and bottom, vs. swelling slight or absent). It shares the absence of a dorsal fin with L. boticario and the glanapterygines Glanapteryx, Pygidianops, and Typhlobelus, but can be readily distinguished from the former species by the features mentioned above and from the remaining genera by having a larger eye (9.0–10.5 % HL vs. less than 6.0 %, or absent) and a longer pectoral fin (11.1–11.6 % SL vs. less than 5.0 %, or absent).</p><p>The new species differs further from all species of Listrura, except L. tetraradiata, by having a low number of vertebrae (45–46 vs. 48–55). It differs further from L. tetraradiata by having more dorsal and ventral procurrent caudal-fin rays (33–39 and 31–34 rays vs. 21–28 and 20–24, respectively), only unbranched rays on the anal and pectoral fins (vs. many branched rays), and the sensory pore of the sphenotic branch absent (vs. present). It differs further from L. costai, L. nematopteryx, and L. picinguabae by having more pectoral-fin rays (two or three vs. one) and a slightly elongated, relatively deep body (body depth 12.2–12.7 % SL vs. less than 10.5 %). It differs further from L. camposi by having all caudal elements almost entirely fused (Fig. 2, vs. hypurals 1+2 not fused to hypurals 3+4+5).</p><p>Description.— Morphometric data in Table 1. Body elongate, subcylindrical on anterior portion of trunk, to strongly compressed on caudal peduncle. Head broad, wider than body. Dorsal body profile from head to above anal-fin origin and ventral preanal profile straight. Dorsal and ventral postanal profiles (including procurrent-ray folds) slightly convex, with small concavity where joining to caudal fin. Anterior portion of caudal peduncle excluding procurrent rays with fold as deep as body, gradually tapering toward caudal skeleton. Greatest depth including procurrent-ray folds about 15 % deeper than preanal portion of body. Dorsal keel gently increasing posterior to middle of body length onto anteriormost dorsal procurrent ray and continuous with respective fold. Anal opening on posterior two-thirds of standard length, with integument surrounding vent. Small ventral keel from middle of body length to anterior margin of anus. Conspicuous intumescence (axillary organ?) adjacent to posterodorsal margin of pectoral-fin base (see Discussion). Skin covered with minute papillae.</p><p>Head depressed and trapezoidal. Snout blunt and slightly elongate. Mouth subterminal, narrow, and straight. Upper lip narrow and continuous with dorsal surface of head. Lower lip fleshy, well differentiated from ventral surface of head. Premaxilla with at least 22 teeth, dentary with at least 18 teeth; all conical, tips pointed and curved, surrounded by fleshy rim of integument, and distributed on two rows in jaw. Eye well formed, anteriorly located on head, nearer snout tip than to opercular patch of odontodes. Nasal, maxillary and rictal barbels well developed. Tip of nasal barbel reaching vertical through pectoral-fin base. Tips of maxillary and rictal barbels reaching to posterior margin of opercular patch of odontodes. Anterior nostril opening anteromesially at base of nasal barbel. Posterior nostril round and opening midway between anterior nostril and eye. Low rim of integument surrounding posterior nostril, longer anteriorly. Interopercle with at least four odontodes, opercle with at least seven odontodes; all odontodes conical, tips pointed and slightly curved, and surrounded by fleshy rim of integument.</p><p>Dorsal fin, pelvic fin, and pelvic girdle absent (Fig. 2). Anal fin small and round on distal margin, with six segmented unbranched rays plus one or two anterior unsegmented rays embedded in integument. Anal-fin origin adjacent to posterior margin of anus, continuous with integument surrounding vent, and at vertical through 29 th vertebra. Caudal fin elongate and round on posterior margin. Principal caudal-fin rays i,5+5,i* or ii,3+4,ii, dorsal procurrent rays 33*–39, ventral procurrent rays 31*–34. Pectoral fin narrow with two segmented unbranched rays (holotype with three rays in right side); first about 50 % longer than second. Ribs 2. Total vertebrae 45* or 46. Branchial membranes attached only at anteriormost point of isthmus. Six branchiostegal rays (holotype with seven rays in right side) visible through overlying skin; lateralmost ray behind interopercular patch of odontodes.</p><p>Four visible pores, all paired, on laterosensory system. Two anteriormost pores corresponding to cephalic system, located above dorsal margin of opercular patch of odontodes, and homologous to preopercular and postotic canal pores, respectively. Two posteriormost pores located immediately posterior of head and above pectoral fin, and homologous to two pores of main lateral line; posterior smaller than anterior.</p><p>Coloration.— Color in alcohol-preserved specimens very similar to coloration in life. General body color yellowish with vermicular or roundish, partly coalescent, dark brown spots over entire flank and dorsum, more concentrated along lateral midline forming discontinuous row of dark brown blotches; coalesced dots above lateral midline of trunk and dorsum larger and denser than below lateral midline (Fig. 1 top). Some dark brown coalesced dots above and below lateral midline of caudal peduncle usually arranged in oblique rows, outlining myomeres. Abdomen whitish with few small dark brown marks (Fig. 1 bottom). Dorsal and lateral surfaces of head predominantly brown to black, with yellowish areas on ventrolateral region of eye and on mesial region between eyes and anterior nostrils in dorsal view (Fig. 1 middle). Unpigmented areas on part of cheek posterior of maxillary barbel, on posterior region of interopercular and opercular patches of odontodes, and on branchial membrane. Margins of posterior nostril, sensory pores, and neuromasts finely delineated in white. Nasal barbel whitish hyaline, with elongate scattering of dark chromatophores along posterior margin of dorsal side on basal half; ventral side with sparse dark fields near base. Maxillary and rictal barbels with similar pigmentation pattern, but streak outlining anterior margin of dorsal side and faintest on latter. Ventral surface of head whitish with irregular dark brown blotches over mental region. Lower lip whitish, with dark coalesced dots at symphysis. Pectoral fin hyaline with faint streak of minute dark brown dots outlining inter-ray region. Anal fin hyaline with brown blotches on base. Region of procurrent caudal-fin rays hyaline with sparse yellowish to dark brown fields, denser on base. Caudal fin hyaline with concentration of dark brown chromatophores on base, faint dark streaks outlining inter-ray region on anterior half of fin, and two semicircular vertical bands of dark brown chromatophores on posterior half of fin; posteriormost weakly distinguished.</p><p>Distribution.— Listrura depinnai is known from its type locality, a swamp on the wildlife reserve Refúgio de Vida Silvestre Banhado dos Pachecos, Rio Gravataí basin, Laguna dos Patos system, Brazil (Fig. 3).</p><p>Habitat and ecological notes.— The swamp where the new species was collected had clear black water with mud and litter bottom, covered with a large amount of emerging vegetation adjacent to a dense and isolated fragment of wetland forest. The level of the swamp varies along the year, being flooded from April to September and becoming almost completely dry from October to March. The two specimens of Listrura depinnai were captured at a shallow site (about 10 cm water depth above nearly 50 cm depth of submerged litter deposits) among the emerging vegetation. During the collection, the water temperature was 25.5 ° C with pH 5.25 at approximately 1100 hr. A species of Cynopoecilus and Gymnotus aff. pantherinus (both potentially new species) were collected in the same swamp.</p><p>Etymology.— The species epithet is given for Mário C. C. de Pinna, in recognition of his significant contributions to the knowledge of fish systematics, especially on trichomycterid catfishes.</p></div>	https://treatment.plazi.org/id/038287ABFF9AFFB3012B051BC7ABF8F9	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	Villa-Verde, Leandro;Ferrer, Juliano;Malabarba, Luiz R.	Villa-Verde, Leandro, Ferrer, Juliano, Malabarba, Luiz R. (2013): A New Species of Listrura from Laguna dos Patos System, Brazil: The Southernmost Record of the Glanapteryginae (Siluriformes: Trichomycteridae). Copeia 2013 (4): 641-646, DOI: 10.1643/CI-13-027, URL: https://doi.org/10.1643/ci-13-027
