Remaneicaris juliae, Corgosinho, Paulo Henrique C. & Arbizu, Pedro Martínez, 2007

Corgosinho, Paulo Henrique C. & Arbizu, Pedro Martínez, 2007, Three new species of Remaneicaris Jakobi, 1972 (Copepoda, Harpacticoida, Parastenocarididae) from the Ribeirão do Ouro River, Minas Gerais, Brazil, with some remarks on the groundpattern of the Parastenocarididae, Zootaxa 1437, pp. 1-28 : 13-23

Remaneicaris juliae n. sp.

Type material. Holotype, 1 male, dissected and mounted on 5 slides ( INPA 1340a–e). The slide with the A1, A2 and mouthparts was lost.

Paratypes: 1 dissected female mounted on 7 slides ( INPA 1341a–g), 1 partially dissected male mounted on 1 slide ( INPA 1342a) and 1 undissected female mounted on 1 slide ( INPA 1342b). Etymology: The species name honors a friend, Julia Funk, of Freiburg, Germany.

Type location: Ribeirão do Ouro river, Sítio do Corgosinho; Florestal, state of Minas Gerais, Brazil. Coordinates: 19°48’19”S, 44°27’45”W.

Male ( Fig 15 A–B). Length 441 µm (measured from the tip of rostrum to the posterior rim of anal operculum). Rostrum with wide base and 2 sensilla on tip. Cephalothorax and second urosomite each with 1 dorsal integumental window. Urosomite 5 with 1 pair of lateral integumental windows. Dorsal pores on cephalothorax, thoracic somites 1 and 3 and second urosomite. One pair of lateral pores on telson. Arrangement of sensilla on tergites illustrated in Figs. 15 (A–B). Urosomites 4 and 5 with a posterior row of large spinules ( Fig. 16 B). Telson ( Fig. 16 B–C) with a dorsal row of 8 spinules on the anterior half (ARS) and 2 rows of 3 spinules on the posterior half (PRS) near the operculum; ventrally, with a row of 4 spinules near the insertion of the furca. Operculum quadrate, without spinules. Furca 3.5 times longer than wide, with 7 setae, all of them located on distal third. A1 ( Figs. 17 A) 9-segmented and prehensile; armature beginning with proximal segment: 0/5/4/2/5+Ae/1/4/2/9+Ae, as in the former species, with a modified seta on the last segment. A2 as in the previously described species, with allobasis; 1-segmented exp with 1 seta, and 1-segmented enp with 7 setae; Mouthparts armature as in R. tridactyla n. sp.. Leg 1, leg 2 and leg 4 ( Fig. 17 B, C and E) similar to the respective appendices found in males of R. tridactyla n. sp. and R. paratridactyla n. sp., with the exception of the enp of leg 4, somewhat more blunt and with a blade-shaped distal spine. Leg 3 ( Fig. 17 D) coxa without setae or spines; basis with outer seta, 2 outer spinules and 1 proximal row of spinules; enp 1-segmented, without any armature or ornamentation; exp 1-segmented, elongated, bearing 1 row of spinules along outer margin; subdistally, with 2 strong spinules and a strong and curved spine thumb. Leg 5 ( Fig. 16 A) triangular, ending in a spinulous proccess and with all setae located on the outer margin.

Female. No striking differences in armature and ornamentation between appendices of the female of R. juliae n. sp. and the previously described species. Sensilla and pore patterns just as in males, with the exception of the genital double-somite which carries 4 setae. Telson and previous 2 urosomites as in males.

Figures

FIGURE 15. Remaneicaris juliae n. sp., male. A, habitus lateral; B, habitus dorsal.

FIGURE 16. Remaneicaris juliae n. sp., male. A, ventral view of the first urosomite with P 5 and second urosomite with genital aperture; B, dorsal view of the telson and the two previous urosomites; C, telson in a lateral view.

FIGURE 17. Remaneicaris juliae n. sp., male. A, antennule; B, leg 1; C, leg 2; D, leg 3; E, leg 4.