92 



D. JAUME AND G.A. BOXSHALL 



subdivided by posterior surface suture marking plane of fusion 

 between second and third segments. Legs subequal in size except 

 first somewhat reduced. Intercoxal sclerites lacking ornamentation. 

 Legs richly ornamented with spinules, setules and denticles, as 

 figured. Armature as follows: 



Coxa 



Basis Exopod 



Endopod 



Legl 



0-1 



1-1 



I-1;I-1;III,I,4 



0-l;0-2;I,I+l,3 



Leg 2 



0-1 



1-0 



I-1;I-1;III,I,5 



0-l;0-2;I,II,3 



Leg 3 



0-1 



1-0 



I-1;I-1;III,I,5 



0-l;0-2;I,II,3 



Leg 4 



0-1 



1-0 



I-1;I-1;III,I,IV 



0-1:1,11,111+1 



Spines on legs 1 and 2 adorned with spinules, those on leg 3 

 flanged with serrate hyaline frill. Outer spines on exopod and outer 

 and distal spines on endopod of leg 4 ornamented with serrate 

 hyaline frill; inner margin setae on both rami modified, spine-like, 

 ornamented with short pinnules proximally and serrate membrane 

 distally. 



Fifth legs (Fig. 5F) 4-segmented, joined by smooth intercoxal 

 sclerite. Coxa and basis separate, coxa unarmed, basis bearing 

 plumose seta on outer margin. First exopodal segment elongate, 

 about as long as coxa and basis combined, outer margin with 

 subdistal spine flanged with serrated hyaline frill; spinous process 

 just anterior to insertion point of spine; flanged spine longer than 

 segment; inner margin of segment bearing 1 distal spine adorned 

 with sparse setules and about as long as segment. Distal margin of 

 second exopodal segment bearing 1 seta flanked by 2 spines flanged 

 with serrate hyaline frill; spinous process just proximal to insertion 

 point of outer spine; outer spine slightly longer than inner, and 

 longer than first exopod segment; inner spine about as long as first 

 endopod segment; seta shorter than spines. Secondary ornamenta- 

 tion on fifth leg segments as figured. 



Remarks. The genus Neocyclops Gurney, 1927 contains 15 spe- 

 cies distributed in coastal waters of the Northeast and Tropical 

 Atlantic (including the Caribbean), the Mediterranean, the Black 

 and Red Seas, the Indian Ocean, as well as the Pacific (Papua New 

 Guinea) (Petkovski, 1986; Fiers, 1986; Pesce & Galassi, 1993; 

 Lotufo & Rocha, 1993; Rocha, 1995). Petkovski (1986) has split the 

 genus into two subgenera according to the number of exopodal 

 segments of the male fifth legs. The subgenus Neocyclops, charac- 

 terized by a 3-segmented male leg 5, embraces the following species: 

 N. medius Herbst, 1955, A', vicinus (Herbst, 1955), N. affinis (Plesa, 

 1961), N. salinarum (Gurney, 1927) and N. remanei (Herbst, 1952). 



The subgenus Protoneocyclops, with 4-segmented male fifth legs, 

 comprises P. stocki Pesce, 1985, P. geltrudeae Pesce & Galassi, 

 1993, P. papuensis Fiers, 1986, P. mediterraneus (Kiefer, 1960), P. 

 herbsti Petkovski, 1986, P. wellsi Petkovski, 1986 and P. ferrarii 

 Rocha, 1995. This subgenus displays the so-called full Tethyan 

 pattern of distribution (Stock, 1993), i.e., circum-tropical in the 

 entire region of the former Tethys Sea. 



Three other species, viz. N. impwvisus Plesa, 1973 from Cuba, 

 and N. magnus (Sewell, 1949) and N. parvus (Sewell, 1949) from 

 islands in the Indian Ocean, cannot be assigned to either subgenus as 

 their males are unknown. 



Three representatives of the genus are known so far from the 

 Mediterranean region. Neocyclops (N.) salinarum, originally de- 

 scribed from the Suez Canal, was reported also from the Camargue 

 (South France) and the Sirbonian lagoon (Mediteranean coast of 

 Sinai) (Gurney, 1927a; 1927b;Aguesse&Dussart, 1956; Por, 1973). 

 As Petkovski (1986) pointed out, the identity of the French popula- 

 tion needs to be confirmed. Similarly the single copepodid from the 



Andaman Islands (Indian Ocean), assigned by Sewell (1949) to this 

 species, should be reexamined. Neocyclops (A 7 .) vicinus, a species 

 distributed along the coasts of Brazil and the Lesser Antilles (Pesce 

 & Galassi, 1993; Lotufo & Rocha, 1993), has been also reported 

 from the Black Sea (as Eurycyclops remanei vicinus) by Plesa 

 (1963) and Monchenko (1975). As pointed out by Lotufo & Rocha 

 (1993), this record is dubious since their material seems more 

 closely related to N. (N.) remanei than to N. (A 7 ,) vicinus. 



The single representative of the subgenus Protoneocyclops in 

 Mediterranean waters is Neocyclops (P.) mediterraneus, originally 

 described by Kiefer (1960) as Pareuryte mediterranea from an 

 anchihaline cave on Menorca (Balearic Islands). Later, Pesce & 

 Galassi (1987) reported it from an anchihaline cave in Southern 

 Italy. Plesa ( 1981 ) cited the same species from Cuba, but this record 

 has been reassigned by Petkovski (1986) to N. (N.) stocki, a taxon 

 widespread in the Caribbean region (Pesce & Galassi, 1993). 



The Neocyclops from Mallorca has been identified on the basis of 

 the 4-segmented condition of the male fifth legs and the relative 

 lengths of the armature elements on this leg. Mallorca is also close 

 to the type-locality of the species (Menorca). Other characters could 

 not be checked against Kiefer's (1960) original description since this 

 contained only 5 drawings (viz. female anal somite and caudal rami, 

 distal segment of endopod of female leg 4; fifth leg of both sexes, and 

 genital operculum of male). In addition, Kiefer did not designate 

 types for the species. Pesce & Galassi (1987) had only 2 females at 

 their disposal for their supplementary description. 



A differential diagnosis of Neocyclops (Protoneocyclops) 

 mediterraneus (Kiefer, 1960) can be constructed based on charac- 

 ters of the male fifth leg. It differs from N. (P.) geltrudeae Pesce & 

 Galassi (1993) from Curacao (Antilles) in the number of armature 

 elements on the distal segment (3, compared to 4 inA 7 . (P.) geltrudeae). 

 Differences from N. (P.) papuensis Fiers, 1986 from New Guinea 

 and N. (P.) ferrarii Rocha, 1995 from Brazil involve the relative 

 lengths of the spines on the distal segment (the inner spine is clearly 

 longer than the outer in both these species whereas in N. (P.) 

 mediterraneus the outer spine is subsimilar, slightly longer than the 

 inner). Differences from N. (P.) herbsti Petkovski (1986) from the 

 Red Sea, and N. (P.) stocki Pesce, 1985 from the Caribbean, are 

 based on the relative lengths of the flanged spines on the 2 distal 

 segments of leg 5 (these are clearly shorter than the first exopodal 

 segment whereas in N. (P.) mediterraneus they are longer than the 

 segment). In addition, in N. (P.) herbsti the armature element on the 

 inner margin of the first exopodal segment is a plumose seta, 

 whereas inA 7 . (P. ) mediterraneus it is a thick spine. Differences from 

 N. (P.) wellsi Petkovski (1986) from Mozambique lie only in the 

 nature of the armature element on the inner margin of the first 

 exopodal segment, which is also a seta in this species instead of a 

 thick spine. 



Subfamily EURYTEINAE Monchenko, 1975 

 Genus Euryte Philippi, 1843 



Euryte longicauda Philippi, 1843 emend. Giesbrecht, 

 1900 



(Figs 8-11) 



Material examined. Cova de na Barxa (Capdepera). UTM coor- 

 dinates: 539.30; 4393. 10. Topography inAndrewsef al. (1989): Two 

 adult females, 1 adult male, and 1 copepodid (BMNH 1995. 1323— 

 1326). Collected by authors, 3 April 1995. - Cova de na Mitjana 

 (Capdepera): 19 adult males, 7 adult females, and 5 



i 



