PARACYCLOPS REVISION 



121 



Tanganyika given by Lindberg ( 1 95 1 ) is significantly shorter than in 

 the material upon which this description is based. It is possible that 

 Lindberg (1951) was dealing with a new species, but Lindberg's 

 (1951) description is based on the male only and lacks sufficient 

 detail to make further comparisons. 



P. yeatmani is another species of Paracyclops possessing an 1 1- 

 segmented antennule, however, analysis of segmental homologies 

 between P. canadensis, P. affinis and P. yeatmani has revealed that 

 the antennulary segments in P. yeatmani are not all homologous 

 with those of P. affinis and P. canadensis (Karaytug & Boxshall, 

 1998). 



Distribution: This revision has indicated that P. affinis does not 

 occur in North America. All existing records of P. affinis from 

 North America refer to the newly re-discovered P. canadensis. 

 however the presence of P. affinis in Africa as well as in Europe, 

 Japan and Malaya has been confirmed. This species is probably 

 widely distributed throughout the Palaearctic region but is not 

 found in the Nearctic. Australian records (Sars, 1913-l918;Timms 

 & Morton, 1988) of this species must be confirmed. For detailed 

 references concerning the distribution of P. affinis. see Karaytug 

 (1998). 



Paracyclops poppei (Rehberg, 1880) 



(Figures 8-13) 



Cyclops poppei Rehberg, 1880 



Cyclops crassicornis O. F. Miiller, 1785 sensu Herrick (1882) 



Cyclops fimbriatus Fischer, 1853 sensu Herrick (1884). Schmeil 



(1891), Marsh (1892, 1910), Byrnes (1909) 

 Cyclops fimbriatus var Poppei Rehberg, 1 880: Schmeil ( 1 892), Van 



Douwe(1909) 

 Cyclops (Paracyclops) fimbriatus poppei Rehberg. 1880: Gurney 



(1933) 

 Cyclops fimbriatus poppei Rehberg, 1880: Harding & Smith ( 1960). 

 Paracyclops fimbriatus poppei (Rehberg, 1880): Yeatman ( 1959) 



Original description. Cyclops poppei Rehberg, 1880: Abh. 

 Natur. Ver. Bremen, 6, p. 550, Taf. VI, figs. 9-11. 



TYPE LOCALITY. Bremen, Germany 



Type material. Lost 



Material examined 



- Germany, Oldenburg. 49 9. lcf. collected by T. Ishida on 2 

 Aug. 1996. 



- The Natural History Museum, London: Derby, Mauchline, 

 Catrine: 2d"cf , 8 9 9 collected by M.A. Learner. BMNH 1968. 

 8. 19. 3-6. 



- National Museum of Natural History, Smithsonian Institution, 

 Washington: Louisiana, New Orleans, E. New Orleans, in tyre at 

 Grant Street near Old Gentilly Road and Almonaster Avenue (21 

 June 1988), USNM cat: 252018. Ace. No: 373882. 79 9. 

 5cf d\ 6 copepodids were examined and one of each sex was 

 dissected; Louisiana, New Orleans, in tree hole at Louisiana 

 Science and Nature Center, 8 9 9, 5 d" cf . 2 copepodids ( 1 

 female dissected), USNM cat: 252019; Virginia, Giles C., Hill- 

 side seep near mountain lake, tiny pool on path around lake 

 (37°21'33"N, 080°32'1 1"W), 100 + 9 ,d" collected by J. W. Reid 

 on 15 June 1990 (1 9 and Id" dissected), USNM cat: 250443, 

 Ace. No: 359834: New York, Pond at town landfill, town of 

 Northeast, Dutchess ca., NY, Id" and 1 9 mounted on 1 slide, 

 collected by D. Strayer on 8 Oct 1985, USNM cat: 235366; New 



Mexico, Guadalupe River, Jemez National Forest about 40 km 

 NE of San Ysidro, 1 9 (35°45'N 106°50'W), 26 May 1991. 

 USNM cat: 251151; Mexico, Aguascalientes, Calvillo, Presa 

 Penuelas (23 March 1987), 2 9 9.3 copepodids, USNM cat: 

 234218; Japan, Lake Biwa. Shiga Prefecture, 3 9 9 and 



1 (f mounted on 1 slide collected by T Ishida on 17 March 1986, 

 USNM cat: 250682. 



- Russia, R. Ravan 100 km East of St. Petersburg district, 7 9 9, 

 3c?d\ collected by V. Alekseev (22 July 96). 



- Canadian Museum of Nature: Ontario. Frontenac Cty, nearArden 

 on Hwy. 7, pond, collected by Brenda J. Hann (2 June 1972), 



2 9 9 and 1 d\ CMNC: 1984-0348, Acq: IZ 1984-064; Ontario, 

 New Islands, collected by L. Kerr (29 Aug 1969), 2 9 9, CMNC: 

 1984-0370, Acq: 1969-227. 



- Japan, Lake Biwa, Honshu, T Ishida collection (17 March 1986), 

 2 9 9 dissected on 2 slides; Icfcf dissected on 2 slides. 



Redescription of adult female 



Body length and width given in Table 2. Urosome (Figure 8A,B) 

 with genital double-somite and second and third abdominal 

 somites ornamented with fine pits on dorsal surface as figured 

 (Figure 8B). Anal operculum smooth; spinular rows present on 

 either side of anal cleft as figured (Figure 8B). Caudal rami length 

 and width given in Table 3. Caudal rami parallel, with fine 

 cuticular depressions on ventral surface. Dorsal row of spinules 

 on rami extending proximally, nearly reaching base of rami (Fig- 

 ure 8B). 



Antennule 8-segmented. Setal formula 8, 12, 6. 5, 2 + aesthetasc, 

 2, 2 + aesthetasc, 7 + aesthetasc; coxobasis of antenna without 

 spinular row on caudal surface near base of inner spinulose setae 

 (arrowed in Figure 9H). 



Terminal endopodal segment of leg 2 (Figure 10D) with stout 

 spine, as long as segment: intercoxal sclerite of leg 3 with spinular 

 row on anterior surface (Figure 11 A) and with 3 spinular rows 

 posteriorly (Figure 1 1C); intercoxal sclerite of leg 4 with patch of 

 spinules on anterior surface and with 3 spinular rows on posterior 

 surface (Figure 1 1D,E). 



Spine and seta formula as follows: 



Coxa 



Basis 



Exopod 



Endopod 



Leg 1 



0-1 



l-I 



I-1;I-];III,5 



0-l;0-l; 1,1,4 



Leg 2 



0-1 



[-0 



I-1;I-1;III.I.5 



0-1:0-2; 1,1,4 



Leg 3 



0-1 



1-0 



I-1;I-1;1II,I,5 



0-1:0-2; 1,1,4 



Leg 4 



0-1 



1-0 



I-1;I-1;II,I,5 



0-1 ;0-2; 1,11,2 



Leg 5 (Figure 8C) comprising single free segment, armed with 1 

 inner spine, well developed outer spinulose seta as long as inner 

 spine, 1 plumose seta in middle. 



Description of adult male 



Body length and width given in Table 2. Caudal rami short (Figure 

 12C.D), about 2.5 times longer than broad; coxobasis of antenna 

 with spinular row on caudal surface at base of inner spinulose setae 

 (arrowed in Figure 12F), first endopodal segment with 2 spinular 

 rows on frontal surface. 



Antennule digeniculate (Figure 13A-F), indistinctly 15-seg- 

 mented. Segment 1 armed with 8 setae; setae (A) and (C) are large 

 and modified (arrowed in Figure 13E) by ornamentation of strong 

 spinules in proximal and mid sections, tapering to fine point distally 

 (Figure 13A,E,F). Segmental fusion pattern as follows: I-V. VI-VII, 

 VIII, IX, X, XI, XII, XIII, XIV, XV, XVI, XVII, XVIII-XX, XXI- 

 XXIII, XXIV-XXVIII. 



