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Neopontonides Henryvonprahli, Una Nueva Especie De Camarón Pontoníno Del Pacífico De Colombia (Decapoda: Palaemonidae) Simbio

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Neopontonides Henryvonprahli, Una Nueva Especie De Camarón Pontoníno Del Pacífico De Colombia (Decapoda: Palaemonidae) Simbio Rev. Biol. Trop., 43(1-3): 231-237, 1995 Neopontonides henryvonprahli, una nueva especie de camarón pontoníno del Pacífico de Colombia (Decapoda: Palaemonidae) simbionte de las gorgonias Muricea robusta y Lophogorgia alba' Gabriel E. Ramos2 1 Contribución No. 40 del CIME, Centro de Investigaciones Marinas y Estuarinas de la Universidad del Valle. 2 Facultad de Ciencias, Biología Marina, Universidad del Valle, Apartado Aéreo 25360, Cali, Colombia. (Revisado 4-XI-1994. Aceptado 23-XI-1994) Abstract: A new species of pontonnine shrimp, Neopontonides henryvonprahli, is described. The new species lives symbiotically with the gorgonians Muricea robusta and Lophogorgia alba, in shallow waters of the Pacific coast of Colombia. N. dentiger was also found on M. robusta, but not on L. alba. The new species can be distinguished from all known species oí Neopontonides by the well marked angulation of the supraorbital margin. Key words: Crustácea, Caridea, new species, Neopontonides henryvonprahli. Cantera et al. (1987), en su estudio sobre los Foundation, University of Southern California; diferentes simbiontes del octocoral Lophogor­ USNM, National Museum of Natural History, gia alba Duchassaing & Michelotti, en la Isla Smithsonian Institution, Washington, D. C; Gorgona, informaron sobre un camarón ponto­ NTM, Northern Territory Museum of Arts and níno, identificado por ellos como Neopontoni­ Sciences, Darwin, Australia; CRBMUV, Co­ des dentiger Holthuis, del cual presentaron fi­ lección de Referencia de Biología Marina, Uni­ guras del telson, segundo quelípedo y región versidad del Valle, Cali, Colombia. Abreviatu­ anterior del cefalotórax en vista lateral; estas ras: LC = longitud del caparazón, medido des­ estructuras presentaron notables diferencias de el extremo posterior del cefalotórax hasta la con la descripción de Holthuis (1951), especial­ punta del rostro; ovígs. = hembras con huevos mente en el número de dientes sobre el rostro. adheridos a sus pleopodos; recolec. = recolec­ Debido a estas discrepancias se revisó mate­ tor del material; prof. = profundidad de reco­ rial de camarones pontonfnos recolectado en lecta; además, cada uno de los meses en la fe­ Bahía Málaga, asociado a la gorgonia Muricea cha de colección del material se abrevió a sus robusta Verrill. Se encontró a dos especies de tres primeras letras. Neopontonides: el verdadero N. dentiger y otra especie que coincide con las ilustraciones de Neopontonides henryvonprahli n. sp. Cantera et al. (1987), la cual resultó ser nueva (Figs. 1-3) para la ciencia, siendo objeto de descripción en Sinonimia.— Neopontonides dentiger. Can­ el presente manuscrito. tera et al. 1987: 15, fig. 5. Simultánea y posteriormente en esta misma Material tipo.— Holotipo: 1 Ó\ LC 2.7 localidad, se recolectó más material de la nueva mm, (USNM 244240), Punta Alta, Bahía Mála­ especie sobre L. alba, similar a la informada ga (localidad tipo), simbionte de M. robusta, por Cantera et al. (1987), pero no se encontró a prof. 5 m, 15 Dic 1985, recolec. G.E.Ramos; N. dentiger. Paratipos: 3 Q ovígs., LC 2.8-3.1 mm, (USNM El material se encuentra depositado en las 251760); 2 Q ovígs., LC 2.2-3.0 mm, (AHF siguientes instituciones: AHF, Alian Hancock 855); 2 Q ovígs., LC 2.8-3.1 mm, (NTM Cr. 232 REVISTA DE BIOLOGÍA TROPICAL Fig. 1. Neopontonides henryvonprahli n. sp. Holotipo, USNM 244240; cuerpo en vista lateral; adicionalmente se observa muy cerca de la antena el segundo pereópodo izquierdo, el resto de pereópodos izquierdos fueron omitidos. Escala = 2 mm. 007422); 2 Ü\ LC 2.7-2.9 mm, 2 Q, LC 2.2- mos (CRBMUV 84051).— Los Negros, Bahía 2.7 mm, 5 Q ovígs., LC 2.0-4.0 mm, (CRB- Málaga, 3 0\ LC 2.5-2.9 mm, 2 Q ovígs., LC MUV 85104).— Isla Palma, 2 O", 2 Q ovígs., 3.2-3.8 mm, simbiontes de L. alba, prof. 1-2 m, simbiontes de L. alba, prof. 3 m, 15 Feb 1990, 25 Nov 1985, recolec. G.E.Ramos (CRBMUV recolec. E.Ocampo (NTM Cr. 007904); 13 0\ 85105). LC 1.7-2.9 mm, 45 Q, LC 1.5-3.6 mm, 16 Q Descripción.— Rostro delgado, comprimi­ ovígs., LC 2.7-3.5 mm (CRBMUV 90006). do lateralmente; la punta alcanza o sobrepasa Material adicional.— Isla Gorgona: Estre­ ligeramente el margen distal de la escama ante- cho de Tasca, 2 , LC 2.2-2.4 mm, simbionte nal (escafocerito); borde ventral del rostro iner­ de L. alba, prof. 2 m, 13 Nov 1982, recolec. me, margen dorsal con 0-5 dientes (usualmente C.Caicedo (CRBMUV 82041); 3 Q, LC 2.2- 3), ninguno colocado detrás de la órbita ocular. 2.4 mm, 6 Q ovígs., LC 2.1-2.5 mm, 2 juveni­ Margen supraorbital con notable proyección les LC 1.7-1.9 mm, simbiontes de L. alba, prof. angular, la cual cubre parte de la base del pe­ 5 m, 12 Jun 1983, recolec. C.Caicedo (CRB­ dúnculo ocular; dorsalmente, entre este proceso MUV 83052); 6 U, LC 2.1-2.4 mm, 1 Q, LC angular y el margen lateral del rostro, se pre­ 2.3 mm, 1 Q ovíg., LC 2.3 mm, simbiontes de senta una depresión cóncava. Caparazón com­ L. alba, prof. 4 m, 25 Feb 1984, recolec. G.E.- primido, armado solamente con un diente ante- Ramos (CRBMUV 84050).— Ensenada de nal; con depresión anterolateral en la cual se Utría: 1 (3, LC 2.6 mm, 1 Q, LC 2.6 mm, 8 acomoda el abultado pedúnculo ocular. Q ovígs., LC 2.2-3.4 mm, simbiontes de L. al­ Abdomen liso. Pleura de los somitos abdo­ ba, prof. 6 m, 12 Ago 1984, recolec. G.E.Ra- minales 1-5 redondeados; sexto somito abdo- RAMOS: Neonpontonides henryvonprahli, n.sp. 233 minal inerme, cerca de dos veces la longitud Primer par de pereópodos de tamaño simi­ del quinto somito. Endopodo del segundo pleo- lar; dedos delgados, más cortos que la palma, podo del macho con el apéndice interno más punta de ambos con un pincel de setas; carpo y largo que el apéndice masculino. Telson 2.2- mero subiguales en tamaño, pero el primero es 2.4 veces tan ancho como largo, subigual a la más ancho en su unión al propodio. longitud del sexto somito abdominal; dos pares Segundo par de pereópodos asimétricos; de espinas dorsolaterales ubicadas en la mitad quelípedo mayor con quela inflada, los dedos distal y tres pares de espinas distales, de las ocupan un poco menos de la mitad de la longi­ cuales el par intermedio es el más largo y grue­ tud de la palma; superficie cortante del dáctilo so; ápice del telson agudo. Exopodo del uropo- usualmente con dos pequeños dientes bien se­ do con espina movible entre el margen lateral y parados entre sí, situados en la mitad proximal; el diente distolateral. superficie cortante del dedo fijo con un par de Ojos bien desarrollados; pedúnculo algo elevaciones romas, las cuales encajan en el más largo que la córnea, con abultamiento ro­ dáctilo, tercio distal cóncavo; punta de ambos mo cónico sobre el margen anterior; córnea dedos con pincel de setas; palma lisa, sin protu­ bien pigmentada, usualmente algo de pigmento berancias; carpo subtriangular; mero alargado; también presente en la parte del pedúnculo ad­ isquio con ensanchamiento en la unión al mero. junto a la córnea. Quelípedo menor con quela de forma similar a Pedúnculo antenular con estilocerito agudo; la quela del primer par de pereópodos, aunque segmento basal con ángulo anterolateral termi­ más grande; dedos con superficie cortante lisa, nando en diente agudo, el cual usualmente no al­ punta de ambos con un pincel de setas, carpo canza el margen distal del segundo segmento; se­ subtriangular, alargado; mero un poco más lar­ gundo y tercer segmentos subiguales en tamaño. go que el isquio. Escama antenal (escafocerito) se extiende Tercer par de pereópodos lisos, sin espinas; hasta, o casi alcanza el extremo del rostro, más dáctilo sencillo, con dos tubérculos romos de de dos veces el ancho en el largo; margen ex­ tamaño desigual en su superficie ventral; pro­ terno ligeramente cóncavo, el cual termina en podio curvo, con setas en los márgenes distales un diente agudo. Pedúnculo antenal extendién­ superior e inferior; carpo de longitud subigual dose hasta cerca del extremo del tercer segmen­ al isquio; mero con una quilla en forma de to antenular. Segmento basal de la antena con triangulo romo cerca del extremo distal del un diente ventrolateral agudo. margen flexor. Cuarto pereópodo similar al ter­ Mandíbula robusta, sin palpo; proceso inci­ cero. Quinto pereópodo más delgado que terce­ sivo con 3-4 dientes situados en el extremo dis­ ro y cuarto; mero sin proceso triangular romo tal; proceso molar con dos dientes fuertes de en el margen flexor. bordes romos separados por una depresión sub- Color en vida.— Neopontonides henryvon­ rectangular. Maxila 1 con lacinia inferior (endi­ prahli adopta la coloración de su hospedero. to) delgada y con algunas setas apicales; lacinia Cuando se encuentra sobre M. robusta, los ca­ superior algo ancha, usualmente con 10 espinas marones son rojo oscuro con cromatóforos na­ y varias setas; palpo bilobulado, el lóbulo infe­ ranja sobre el dorso del caparazón. Sobre L. al­ rior termina en una seta simple, delgada y cur­ ba la coloración es variable; en colonias de co­ va. Maxila 2 con endito entero, usualmente con lor fucsia, los camarones son púrpura con cro­ unas 8 setas apicales; palpo ligeramente inflado matóforos amarillos en su dorso, mientras que y escafognatito de forma oval. Maxilípedo 1 en colonias de color rosa claro, los camarones con endito ancho y entero; palpo pequeño; exo­ son rosados o translúcidos. podo con un lóbulo carideano amplio y redon­ En el Atlántico, este fenómeno se ha obser­ deado, flagelo exopodal alcanza más allá del vado en N.
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