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Papiliolebias Habluetzeli (Cyprinodontiformes: Cynolebiidae) a New Miniature Annual Fish from the Upper Rio Mamoré Basin, Bolivia

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Papiliolebias Habluetzeli (Cyprinodontiformes: Cynolebiidae) a New Miniature Annual Fish from the Upper Rio Mamoré Basin, Bolivia AQUA-22(4).qxp_AQUA 24/10/16 12:29 Pagina 155 aqua, International Journal of Ichthyology Papiliolebias habluetzeli (Cyprinodontiformes: Cynolebiidae) a new miniature annual fish from the upper Rio Mamoré basin, Bolivia Stefano Valdesalici1, Dalton Tavares Bressane Nielsen2, Roger Brousseau3 and Jurij Phunkner4 1) Via Cà Bertacchi 5, 42030 Viano (RE), Italy. E-mail: [email protected] 2) Laboratório de Zoologia, departamento de Biologia, Universidade de Taubaté, Pça Marcelino Monteiro 63, CEP: 12030-010, Taubaté, SP, Brazil 3) 8345 Bull Mountain Circle, Elk Grove, California 95758, USA 4) 7 Plenshin Court, Glasgow, Scotland, G53 6QW, UK Received: 08 June 2016 – Accepted 07 October 2016 Keywords le bassin du Rio Mamoré, autour de la ville de Trinidad, au Ichthyology, taxonomy, killifish, Departamento Beni, nord de la Bolivie. Elle se distingue de toutes les autres es- Trinidad pècesdu genre, sauf de Papiliolebias francescae par les détails suivants pour les mâles ; dorsale et anale pointues, à peu près Abstract la moitié de la dorsale et de la caudale blanchâtre avec de Papiliolebias habluetzeli, new species, is described based on larges lignes rouge foncé, la caudale avec des rangées trans- specimens collected in a seasonal pool in Rio Mamoré basin, versales de taches rouge foncé et une marque dorée mé- around the town of Trinidad, northern Bolivia. It differs tallique sur la région humérale. Elle se distingue de Papili- from all the other species of the genus apart from Papili- olebias francescae, pour les mâles, par le patron de coloration olebias francescae by the following features in males: dorsal du flanc et de l’anale, par un nombre différent de rayons and anal fins pointed, proximal half portion of dorsal and branchiostégaux et de rayons pelviens anal fin whitish with broad dark red stripes, caudal fin with transverse rows of dark red spots and metallic golden blotch Sommario on humeral region. It differs from Papiliolebias francescae by Papiliolebias habluetzeli, nuova specie, è descritta sulla base male flank and anal fin color pattern and different number di esemplari raccolti in una pozza stagionale del bacino del of branchiostegal rays and pelvic fin rays. rio Mamoré, nei pressi della città di Trinidad, nel nord della Bolivia. Si differenzia da tutte le altre specie del genere, a Zusammenfassung parte P. francescae, per le seguenti caratteristiche nei maschi: Papiliolebias habluetzeli, eine neue Arten, wird auf der pinne dorsale ed anale appuntite, metà prossimali della pin- Grundlage von Proben in einem saisonalen Teich im Rio na dorsale e di quella anale biancastre con larghe strisce rosse Mamoré Becken, um die Stadt Trinidad, im nördlichen Bo- scure, pinna caudale con file trasversali di macchie rosso livien gesammelt beschrieben. Es unterscheidet sich von scuro e una macchia diffusa dorata sulla regione omerale. Si allen anderen Arten der Gattung, abgesehen von Papilio - differenzia da P. francescae per la colorazione dei lati del cor- lebias francescae, durch die folgenden Merkmale bei Män- po e della pinna anale negli individui maschi e per il diverso nern: dorsal und anale Flossen verlaufen spitz, etwa die numero di raggi branchiostegi e raggi della pinna pelvica. Hälfte der dorsalen und analen Flossen ist weißlich mit bre- iten dunkelroten Streifen, Schwanzflosse mit Querreihen INTRODUCTION von dunkelroten Flecken und metallischen goldenem Fleck Bolivia has a high diversity of annual killifish in der Humoralen Region. Es unterscheidet sich von Papi - species belonging to the family Cynolebiidae, with liolebias francescae durch unterschiedliche Seiten- und anal Flossenfarben der Männchen und verschiedene Anzahl von representatives of the genera Austrolebias, Moema, branchiostegal Strahlen und Beckenflossenstrahlen. Neofundulus, Papiliolebias, Pterolebias, Spectrolebias, and Trigonectes with a total of sixteen species found Résumé in the Amazonian area at the central and northern Papiliolebias habluetzeli, nouvelle espèce, est décrite sur Bolivia and in the Bolivian Gran Chaco at the base de spécimens collectés dans une mare temporaire dans southern portion of the country (Costa 1990, 1993, 155 aqua vol. 22 no. 4 - 22 October 2016 AQUA-22(4).qxp_AQUA 24/10/16 12:29 Pagina 156 Papiliolebias habluetzeli (Cyprinodontiformes: Cynolebiidae) a new miniature annual fish from the upper Rio Mamoré basin, Bolivia 1998, 2003, 2005, Costa, Barrera & Sarmiento as: “Moxos-Kärpfling”, pictures of males and fe- 1997, Hablützel 2012 a-b, Hablützel et al. 2013, male, coloration and maximum size reached com- Nielsen 2013, Nielsen & Brousseau 2013a-b, 2014, pared with P. bitteri and P. hatinne). Osinaga 2006, Schalk et al. 2013, Valdesalici & Brousseau 2014). Holotype: CIRA 3271, male, 25.1 mm SL, Bolivia, The genus Papiliolebias comprises four species: P. Departamento Beni, about 30 km north of bitteri, from the Chaco region of the Paraguay River Trinidad, Rio Mamoré basin, 14°33’16” S, 64°52’4” basin, Paraguay and Argentina, P. hatinne from Rio W, D. Pillet et al., 22 March 2013 Bermejo basin, Salta, Argentina and Rio Pilcomayo, Paratypes: MSNG 59185, 1 male, 19.6 mm SL, Tarija Department, Bolivia, and P. ashleyae and P. same data as holotype. ZUEC 8301, 6 males 23.0- francescae from Rio San Pablo drainage, Rio Madeira 31.3 mm SL, 6 females 20.5-22.8 mm SL; Bolivia, River basin, Bolivia. Departamento Beni, East of Trinidad, Río Mamoré The phenomenon of miniaturization consists in basin, 9, 14°49’27” S, 64°50’17” W, R. D. Brous - the extreme reduction in body size within a lineage seau & J. Phunkner, 18 February 2013. ZSM (Hanken & Wake 1993). As the result of collections 43528, 1 male, 22.8 mm SL, 2 females 21.2-22.9 directed to more specialized habitats and use of ap- mm SL, Bolivia, Departemento Beni, small pond at propriated collecting techniques, new reports about Campus of Universidad Trinidad, within catchment miniature freshwater fishes, maturing at sizes under of Rio Mamoré, 14°48’43.581” S, 64°53’37.893” 20.0 mm SL, or reaching 26.0 mm SL as maximum W, R. Guggenbühl et al., 20 July 2014. MSNG adult size, as established by Weitzman & Vari 59186, male, 22 mm SL, C&S, Bolivia, Departa- (1988), have become more frequent in the literature mento Beni, East of Trinidad, Río Mamoré basin, (Mattox et al. 2013, Costa & Lazzarotto 2014). The 14°49’27” S, 64°50’17” W, Joe Bulterman et al., 18 objective of this paper is to describe a new miniature February 2014. Papiliolebias species from temporary pools near Río Diagnosis: Males Papiliolebias habluetzeli are simi- Mamore around the city of Trinidad, department of lar to males of P.francescae and differ from the other Beni, Bolivia. members of the genus by the following unique fea- tures: dorsal and anal fins pointed (vs. rounded); MATERIALS AND METHODS proximal half dorsal and anal fin whitish with broad Measurements and counts were taken as described dark red stripes (vs. proximal portion white with in Costa (1995). Measurements were made with a black spots); caudal fin with transverse rows of dark digital calliper, partly under a dissecting microscope, red spots (vs. never a similar colour pattern); and and rounded to the nearest 0.1 mm. If not stated metallic golden blotch on humeral region (vs. metal- otherwise, measurements are presented as percent- lic bluish green). P. habluetzeli differs from P. ages of standard length (SL), except for eye diameter, francescae by colour, number and shape of bars on head width, and head depth which are given as per- flanks (orange red vs. dark red; 11-13 vs. 9-10, rarely centage of head length (HL). Osteological prepara- 11, and thin formed by single scale line, vs. broad, tions were made according to Taylor & Van Dyke sometime fused into more than a single line, mostly (1985). Nomenclature for cephalic laterosensory se- on anterior portion of body), number and shape of ries follows Costa (2001). Terminology for frontal red proximal stripes on anal fin (5-8, usually 7, vs. 5, squamation follows Hoedeman (1958). Type mater- rarely 6; thin vs. broad and long); extension of white ial was deposited at the: Museo de Peces (CIRA- pigmentation at proximal area on anal fin (about ¼ UAB-JB), Trinidad; Museo Civico di Storia Naturale of the fin vs. half fin); absence of thin white rim on “Giacomo Doria” (MSNG), Genova; Zoologische anal fin (vs. presence), 5 (vs. 6) branchiostegal rays Staatssammlung München (ZSM), München; and 6 (vs. 7) pelvic-fin rays. Museu de Zoologia Universidade Estadual de Camp- Description: Morphometric data are presented in inas “Adão José Cardoso” (ZUEC), Campinas. Table I. Largest male examined 31.3 mm SL; largest female examined 22.8 mm SL. Dorsal profile slight- ly convex from snout to end of dorsal-fin base, Papiliolebias habluetzeli, n. sp. slightly concave on caudal peduncle. Ventral profile (Figs 1-5; Table I) gently convex from lower jaw to anal-fin origin, nearly straight to slightly concave along caudal pe- Papiliolebias sp.: Hablützel, 2012a: 62-65 (reported duncle. Body moderately slender, compressed. aqua vol. 22 no. 4 - 22 October 2016 156 AQUA-22(4).qxp_AQUA 24/10/16 12:29 Pagina 157 Stefano Valdesalici, Dalton Tavares Bressane Nielsen, Roger Brousseau and Jurij Phunkner Table I. Morphometric and meristic data for the holotype fin in males, dorsal fin slightly pointed, anal-fin (H) and paratypes of Papiliolebias habluetzeli. rounded in females. Caudal-fin rounded. Pectoral- fin rounded, its posterior margin reaching vertical H Paratypes between and urogenital papilla and first ray of anal- Male Male n=10 Females n=8 fin in males. Pelvic-fins pointed, with filamentous Standard length (mm) 25.1 19.6-31.3 20.5-22.9 tip reaching between base of 5th and 6th anal-fin ray Percent of standard length in males; between urogenital papilla and first ray of Body depth 29.8 29.0-36.0 28.1-31.1 anal fin in females.
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