Complementary description and record of Neocyclops ferrarii (Cyclopidae: Halicyclopinae) from northern Colombia

The interstitial cyclopoid copepod Neocyclops ferrarii Rocha, 1995 was found in samples obtained from littoral areas of Rodadero Bay, northern Colombia. The specimens from Colombia share the diagnostic features of N. ferrarii presented in the original description. However, the Colombian specimens show some degree of variation with respect to the type material in: 1) the number of teeth in the labrum; 2) the length of outer exopodal spine on female leg 5; 3) the relative length of the mandibular palp setae; 4) length/width ratio of caudal rami; 5) the length ratio of caudal setae VI/III; 6)  the length ratio of caudal setae VII/VI; 7) the male body size; 8) the male caudal rami length/width ratio; 9)  This is the second record of this species after its original description from Belizean waters. In the Caribbean region N. ferrarii most closely resembles N. vicinus Herbst, both of them bear an antennary exopod, a 12-segmented female antennule, P3ENP3 armature formula 3,III, but can be  separated from the latter by difference in the length/width ratio of the female caudal ramus, the length ratio of caudal setae VI/III, the length ratio of caudal setae VII/VI, the male body size, the number of segment of P4ENP, the armature details of mandibular palp and the number of segments of male P5.  This is the second species of Neocyclops recorded from Colombia and represents a distributional range expansion of N. ferrarii in the Caribbean Basin.El  copépodo ciclopoide intersticial Neocyclops ferrarii Rocha, 1995 fue encontrado en muestras litorales obtenidas de la bahía Rodadero, al norte de Colombia. Los especímenes de Colombia comparten las características diagnósticas de N. ferrarii de la descripción original. Sin embargo, los especímenes colombianos muestran cierta variación con respecto al material tipo en: 1) el número de dientes en el labro; 2) la longitud de la espina exopodal externa de la pata 5 de la hembra; 3) la longitud relativa de las setas del palpo mandibular; 4) la relación largo/ancho de la rama caudal; 5) la longitud proporcional de las  setas caudales VI / III; 6) la longitud proporcional de las setas caudales  VII / VI; 7) la talla del macho; 8) la relación largo/ancho  de la rama caudal del macho. Este es el segundo registro de esta especie después de su descripción original  en aguas de Belice. En la región Caribe N. ferrarii se asemeja más estrechamente a N. vicinus Herbst, ambos poseen exópodo antenal, anténulas con 12 segmentos en la hembra, la fórmula P3ENP3 de 3, III, pero difieren en la proporción de la rama caudal en la hembra, la longitud de las setas caudales VI / III y VII / VI, el tamaño del macho, el número de segmento de P4ENP, en detalles del armamento del palpo mandibular y en el número de segmentos de la P5 del macho. Esta es la segunda especie de Neocyclops registrada en Colombia y representa una expansión de la distribución conocida de N. ferrarii en la Cuenca del Caribe

New species of Leptocaris and a new record of Darcythompsonia inopinata (Harpacticoida: Darcythompsoniidae) from Colombia

Water samples taken from Rodadero Bay (Colombia) yielded three species of harpacticoid copepods of the family Darcythompsoniidae. Leptocaris colombiana sp. nov. is attributed to the brevicornis-group, and is characterized by the five-segmented antennule, discrete (not fused) female genital somite and third urosomite, six setae on the caudal rami, two setae on the antennal exopod, lack of abexopodal seta on the allobasis of the antenna, mandibular palp reduced to one seta, one inner seta only on the first endopodal segment of leg one and second segment with two apical elements, and by three setae on leg five. Leptocaris vicina sp. nov., is attributed to the mangalis-group, and is similar to L. stromatolicola in the armature formula of leg one to leg four, female leg five with two inner small subequal setae and one outer long element, five-segmented female antennule, antenna with one abexopodal seta on allobasis, antennal exopod reduced to two setae, mandibular palp reduced to one seta, and maxilla with two endites. These two species can be separated by the shape of the anal operculum, by the relative length of the endopodal segments of legs two and three, and by the innermost distal spine of the endopodal segment of the antenna. The record of Darcythompsonia inopinata from northern Colombia represents a continuum along the Caribbean coast of the Pacific dominion, Brazilian subregion.Se hallaron tres especies de copépodos harpacticoides de la familia Darcythompsoniidae en muestras de agua tomadas de la Bahía del Rodadero (Colombia). Leptocaris colombiana sp. nov. pertenece al grupo brevicornis, y se caracteriza por la anténula de cinco segmentos, somita genital y tercer urosomita de la hembra discretos (no fusionados), ramas caudales con seis setas, exópodo de la antena representado por dos setas, alobase de la antena sin seta abexopodal, palpo mandibular reducido a una seta, primer segmento del endópodo de la pata uno con una seta interna y segundo segmento con dos setas apicales, y pata cinco con tres setas. Leptocaris vicina sp. nov. pertenece al grupo mangalis y es similar a L. stromatolicola en la fórmula de setas y espinas de las patas uno a cuatro, pata cinco de la hembra con dos setas internas pequeñas de la misma longitud y un elemento externo largo, anténula de la hembra de cinco segmentos, alobase de la antena con una seta abexopodal, exópodo de la antena reducido a dos setas, palpo mandibular reducido a una seta, maxila con dos enditos. Estas dos especies pueden distinguirse por la forma del opérculo anal, por la longitud relativa de los segmentos del endópodo de las patas dos y tres, y por la espina interna del segmento del endópodo de la antena. Finalmente, el registro de Darcythompsonia inopinata en el norte de Colombia representa un continuo a lo largo de la costa caribeña del dominio del Pacífico, subregión Brasileña

Leydigia (Neoleydigia) cf. striata Birabén, 1939 (Crustacea: Cladocera: Chydoridae) from Colombia and its differentiation from L. (N.) cf. ipojucae (Brehm, 1938)

This paper concerns the chydorid cladoceran Leydigia (Neoleydigia) cf. striata Birabén, 1939 in plankton samples from Ciénaga El Convento, Colombia. The specimen from Colombia bears the diagnostic features of L (N) cf. striata as redescribed by Kotov and Elías-Gutiérrez (2003), Kotov et al. (2004), and Kotov, (2009). However, this particular specimen shows some subtle differences in the morphology of basal spine of claw, spine-like setules on first and second endopod segments of antenna II, and striation on valve. In the Neotropics, L. (N.) cf. striata Birabén, 1939 most closely resembles L. (N.) cf. ipojucae Brehm, 1938 in the structure of thoracic limb II and postabdominal claw, but can be separated from the latter by differences in setules in lateral fascicles on labrum, postpore distance (PP), shape of postabdomen, preanal margin of the postabdomen, and seta 2 of thoracic limb III

New Records of Cladocera (Crustacea: Anomopoda) from Laguna Navío Quebrado, La Guajira Department, Colombia

Zooplankton plays key roles in structuring interactions in aquatic communities but often remain undescribed in many water systems. This paper reports seventeen species of the Cladocera (Crustacea: Branchiopoda) from Laguna de Navío Quebrado, all of them new records for La Guajira Department, Colombia. The Cladocera assemblages include mostly the Neotropical taxa associated with vegetation. This paper also serves as the first compilation of the data on the Cladocera of this region and includes brief remarks, descriptions and illustrations of some species with additional notes on their distribution

Figure 7 from: Fuentes-Reinés JM, Suárez-Morales E (2017) A new species of Echinolaophonte and record of E. armiger (Gurney, 1927) (Crustacea, Copepoda, Harpacticoida, Laophontidae) from the Caribbean with a key to species. ZooKeys 722: 19-36. https://doi.org/10.3897/zookeys.722.14560

A new species of the harpacticoid copepod genus Echinolaophonte is described here from specimens obtained during a biological survey of Rodadero Bay, a coastal system in the Colombian Caribbean. This species has been previously recorded as E. armiger Gurney, 1927 in different geographic areas (Indian and Pacific Oceans). The Colombian specimens recognized as E. villabonae sp. n. and true E. armiger are deemed as distinct species based on differences in several features of which the shape of the rostrum and the dorsal spinous process on the prosome are among the most distinctive. These and other characters are shared by specimens recorded as E. armiger from Caroline Islands and Australia that are now incorporated to the new species. The finding of the true E. armiger, previously known only from Egypt, the Texan coast, Brazil, and possibly Bermuda, constitutes the first record of this species in the western Caribbean and a regional range extension. A key to the identification of the 13 known species of the genus is also provided

Complementary description and record of Neocyclops ferrarii (Cyclopidae: Halicyclopinae) from northern Colombia

The interstitial cyclopoid copepod Neocyclops ferrarii Rocha, 1995 was found in samples obtained from littoral areas of Rodadero Bay, northern Colombia. The specimens from Colombia share the diagnostic features of N. ferrarii presented in the original description. However, the Colombian specimens show some degree of variation with respect to the type material in: 1) the number of teeth in the labrum; 2) the length of outer exopodal spine on female leg 5; 3) the relative length of the mandibular palp setae; 4) length/width ratio of caudal rami; 5) the length ratio of caudal setae VI/III; 6)  the length ratio of caudal setae VII/VI; 7) the male body size; 8) the male caudal rami length/width ratio; 9)  This is the second record of this species after its original description from Belizean waters. In the Caribbean region N. ferrarii most closely resembles N. vicinus Herbst, both of them bear an antennary exopod, a 12-segmented female antennule, P3ENP3 armature formula 3,III, but can be  separated from the latter by difference in the length/width ratio of the female caudal ramus, the length ratio of caudal setae VI/III, the length ratio of caudal setae VII/VI, the male body size, the number of segment of P4ENP, the armature details of mandibular palp and the number of segments of male P5.  This is the second species of Neocyclops recorded from Colombia and represents a distributional range expansion of N. ferrarii in the Caribbean Basin

A new species of <i>Halicyclops</i> (Copepoda, Cyclopoida, Halicyclopinae) from an estuarine system of the Caribbean Coast of Colombia

Plankton samples obtained from the Ciénaga Grande de Santa Marta, an extensive estuarine system in northern Colombia, yielded adult male and female specimens of an undescribed halicyclopine cyclopid copepod of the genus Halicyclops. Cyclopid copepods are frequently found in freshwater and transitional habitats. Members of the subfamily Halicyclopinae are chiefly brackish water forms with a few freshwater species. The new species described herein is assignable to the group of species “F” of Halicyclops (sensu Pesce, 2018) with a 2333 exopodal spine formula. Currently, this group contains five species and one subspecies. Halicyclops gutierrezi sp. n. can be distinguished from its known congeners by the absence of an anal operculum, the relative length of setae of the female and male P5, the relative length of the inner setae of P4EXP3, and details of the male antennule. This is the fifth species of Halicyclops recorded from Colombia and the first one of Halicyclops group “F” described from the Caribbean region. With the addition of H. gutierrezi sp. n., the number of species of the genus known from the Neotropics increased to 20. A key to the species of the genus recorded in Colombia is also provided

A new species of Leydigia Kurz, 1875 (Cladocera: Chydoridae) from Colombia

Kotov, Alexey A., Fuentes-Reinés, Juan Manuel (2014): A new species of Leydigia Kurz, 1875 (Cladocera: Chydoridae) from Colombia. Zootaxa 3814 (3): 399-408, DOI: 10.11646/zootaxa.3814.3.