Brasilibathynellocaris salvadorensis
Creators: name: Corgosinho, Paulo H. C.
name: Arbizu, Pedro Martínez
name: Dos Santos-Silva, Edinaldo N.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Hexanauplia
Harpacticoida
Parastenocarididae
Brasilibathynellocaris
Brasilibathynellocaris salvadorensis

description: BRASILIBATHYNELLOCARIS SALVADORENSIS ‘FORMA LANCEOLATA’   
 Parastenocaris salvadorensis f. lanceolata – Noodt (1962: 235); Rouch (1986), Dussart & Defaye (1990).   
 Material examined: Noodt (1962) reported material from samples S 310 and S 311, which was collected from different spots at the same site; we found no material from S 310, thus observations were based on ten females from S 311.   
 Collecting locality: El Salvador, Laguna de Ilopango near San Salvador, groundwater from sandy beach at Balneario Apulo.   
 Diagnosis: Females of B. salvadorensis f. lanceolata differ from the nominotypical form only in the furca (Noodt, 1962: 236, figs 40, 41).   
 Description of neotenic male of B. salvadorensis Neotenic male with five urosomites and telson. No distinct difference in shape and armature of furca. A2, legs 1 and 5 as in normally developed male. A1 (Fig. 18A) eight-segmented, as in male, but weakly geniculate; without the normal development of the fifth segment that can be seen in the male. Praecoxa of legs 2 and 4 is a distinct and relatively large triangular section adjacent to the outer proximal corner of coxa (Fig. 18C, D; not observed for leg 3). Leg 2 (Fig. 18D) as in male, but with a row of spinules on distal inner corner of exp-2 not transformed into hair-like spinules. Leg 3 (Fig. 18B) basis with a long outer seta, a strong curved spinule, and endopod represented by a seta; exopod two-segmented; exp-1 with a strong outer spine homologous to the thumb and an inner hyaline cushion; exp-2 with a distal spine; thumb and exp-2 spine with a hyaline border. Leg 4 (Fig. 18C) with three-segmented exopod; exp-1 not transformed as in normally developed male, with the proximal invagination on proximal inner corner, without an anterior row of strong spinules; in this case, the plesiomorphic condition is expressed in the neotenic male as a distal row of spinules on distal inner corner of the segment.   
 Description of copepodid V of B. salvadorensis   
Male copepodid with four urosomites and telson. Furca with seven setae (Fig. 19A); seta II not extremely reduced. A1 seven-segmented (Fig. 19B), with aesthetascs present on segments 4 and 7. Praecoxa as a distinct and relatively large triangular section adjacent to the outer proximal corner of coxa of legs 3 and 4 (Fig. 19C, D). Leg 3 (Fig. 19C) with lamelliform endopod; exopod two-segmented, exp-1 without inner hyaline cushion and with a distal inner tube pore, exp-2 without distal hyaline frill; basis with a long outer seta and without strong curved proximal spinule; thumb and exp-2 spines without hyaline margins; structures that appear only in the adult, such as the exp-1 hyaline cushion and the basal hook-like spinule (indicated by dark arrows) can be seen inside the copepodid V limb. Leg 4 coxa without the two anterior modified spinules (Fig. 19D); endopod lamelliform, triangular, with a transverse row of spinules inserted at the midlength of the segment and without hyaline distal margin; exp-1 without invagination on proximal inner corner, rectangular and with distal hyaline frill on inner corner; the strong row of anterior spinules of exp-1, the two modified basal spinules and the outer serrated endopod margin that appear in the adult can be seen inside the copepodid V limb and are indicated by dark arrows. Leg 5 (Fig. 19E) with an inner process, an intercoxal plate, an outer basal seta, and three setae inserted on outer margin; proximal exopodal seta adjacent to outer basal seta very reduced.
description: Published as part of Corgosinho, Paulo H. C., Arbizu, Pedro Martínez & Dos Santos-Silva, Edinaldo N., 2010, Revision of Brasilibathynellocaris Jakobi, 1972 (Copepoda: Harpacticoida: Parastenocarididae) with redefinition of the genus, pp. 527-566 in Zoological Journal of the Linnean Society 159 (3) on pages 550-551, DOI: 10.1111/j.1096-3642.2009.00574.x, http://zenodo.org/record/5438570