29 December 1999 PROCEEDINGS OF THE BIOLOGICAL SOCIETY OF WASHINGTON 112(4):695-713. 1999. New records of isopods from the Indian River Lagoon, Florida (Crustacea: Peracarida)

Department of Invertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, D.C. 20560, U.S.A.

Abstract.-Fifteen species of isopod are recorded for the first time as oc- curring in the Indian River Lagoon. Two species are described as new: the janirid asellote Iais jioridana, n. sp., which occurs commensally with Sphae- roma terebrans in low salinity water, and the sphaeromatid f1abelliferan Sphae- romopsis sanctaluciae, n. sp., which is also recorded from the Orange River, Lee County, Florida, and from Islas de Juventud, Cuba. A brief discussion of protogyny in the sphaeromatid Paradella dianae is included.

The Indian River Lagoon, Florida, is the are those of the authors'. Unless otherwise most biologically diverse estuarine system stated, all material is deposited in the col- on the east coast of North America. As part lections of the National Museum of Natural of the Intra-coastal Waterway, it is subject History, Smithsonian Institution. to heavy usage by commercial and sport! recreational water traffic, and has seen Suborder Anthuridea heavy residential development along its Family Anthuridae shores. Given its important mixed-use re- Cyathura polita (Stimpson, 1855) sources, intensive study of the lagoon has been carried out for some time (see Rich- Anthura polita Stimpson, 1855:393.-Har- ards 1995). Ongoing investigations by the ger, 1880:398-402, pI. XI, figs. 68-69. authors of the crustacean fauna of the la- Cyathura polita: Burbanck, 1959:507.- goon have revealed a number of isopod Kruczynski & Subrahmanyam, 1978: species not recorded in earlier studies (e.g., 93.-Camp et aI., 1998: 132. Kensley, Nelson, & Schotte 1995), al- Material examined.-l C(, FTP-1, St. Lu- though some of these may be known from cie River, rotten wood in mangroves, 0.5 m, the wider Florida region (see Camp, Lyons, salinity 15-20 ppt., 29 May 1995.-1 C(, & Perkins 1998). In part, these new records FTP-22, Fort Pierce, Taylor's Creek near are the result of sampling in a wide variety Rt. 1, rotten wood on muddy bank with cat- of habitats, both in the main lagoon as well tails and Spartina, intertidal, 10 ppt., 25 as in its tributary rivers and in the inlets that Apr 1996. open to the sea. Twenty-five marine isopod Previous records.-East coast of Amer- species had previously been recorded from ica from the Gulf of Mexico to Canada. the IRL. The present paper documents 15 additional species and adds to the knowl- Mesanthura pulchra Barnard, 1925 edge of the biodiversity of the Indian River Lagoon. Restricted synonymies, which in- Mesanthura pulchra Barnard, 1925:145, clude the original description plus any Flor- fig. ge.-Kensley & Schotte, 1989:49, ida records, and references that contain ful- fig. 19b; 52-53.-Camp et aI., 1998: 132. ler synonymies are provided for most spe- Mesanthura decorata Menzies & Glynn, cies. Collecting stations designated 'FTP' 1968:26, fig. 8a-i. Mesanthura floridensis Menzies & Kruc- zynski, 1983:28-30, fig. 9a-i.

Material examined.-1

Ptilanthura tenuis Harger, 1878 Fig. 1

Ptilanthura tenuis Harger, 1878:377.- Kensley, 1996a:763, figs. 1, 2.-Kensley, 1996b:278, fig. 5B-D.-Carnp et aI., 1998:132.

Material examined.-5

Suborder Asellota Family laniridae Carpias algicola (Miller, 1941)

Janira algicola Miller, 1941:318-320, fig. 4a-n. Bagatus algicola.-Pires, 1982:247-250, Fig. I. Ptilanlhura lenuis: Female in dorsal view, fig. 47-55. showing persistent color pattern. Scale = I nun. Carpiqs algicola.-Kensley & Schotte, 1989:82-83, fig. 38a-g.-Carnp et aI., 0-0.8 m, 19 Sep 1996.-2 0, 1 ovigerous 1998:133. Sphaeroma terebrans in rotten west of bridge, on Caulerpa 0.25 m, 19 Sep wood, Port St. Lucie, Florida, 29 May 1996.-18 specimens, FTP-51, Sebastian 1995.-100+ specimens, sta FTP-12, on Inlet State Park, south side, granite boulder Sphaeroma terebrans in rotten wood, Riv- shore inside bridge, algal clumps on boul- erside Park at Port St. Lucie Boulevard, in- ders, 0.5 m, 25 Jun 1997.-3 0', 7 oviger- tertidal-I m, 10 ppt., 1 Jun 1995.-1 spec- ous ,?, 60+ immature, FTP-53, same lo- imen, sta FTP-13, on Sphaeroma terebrans cality, algal clumps and sponge on boulders in dead wood, north fork of St. Lucie River, outside of bridge, 0.5-1.0 m, 26 Jun at Prima Vera Boulevard, 2.5 ppt, 0.1 m, 1 1997.-3 specimens, FTP-65, Sebastian In- Jun 1995.-2 specimens, sta FTP-17, on let State Park, orange sponge on rocks in- Sphaeroma terebrans in rotten wood, Riv- side of inlet, low tide level, 0-50 cm, 18 erside Park on St. Lucie River, 0 ppt, 0.1- Aug. 1998.-1 ovigerous ,?, 5 immature, 0.5 m, 23 Apr 1996.-3 specimens, sta FTP-68, Sebastian Inlet State Park, gravel FTP-27, on Sphaeroma terebrans in rotten rubble, empty shells in pockets between wood, near mouth of St. Sebastian River, rocks inside inlet, 0-20 cm, 18 Aug 15 ppt, 0.5 m, 17 Sep 1996.-2 specimens, 1998.-12 ovigerous ,?, 8+ immature, sta FTP-29, on Sphaeroma terebrans in rot- FTP-69, Sebastian Inlet State Park, algal ten wood, island in mouth of St. Sebastian turf and hydroids on granite boulders inside River, 15 ppt., 0.5 m, 17 Sep 1996.-14 inlet, 0-50 cm, 18 Aug. 98. specimens, Estero River mouth, Lee Coun- Previous records.-Venezuela; Jamaica; ty, Florida, 26°26'05/1N, 81°50'52/1W, colI. Yucatan, Mexico; Belize; Looe Key, Flori- A. S. Walton.-1 specimen, Hendry Creek, da; intertidal to 2 m. off Estero Bay, Lee County, Florida, colI. A. S. Walton, 14 Apr 1993. Carpias triton (Pires, 1982) Description.-Male: Body about 2.5 Bagatus triton Pires, 1982:251-254, figs. times longer than greatest width at pereo- 72-84. nite 4. Cephalon about twice wider than Carpias triton.-Kensley & Schotte, 1989: long, anterolateral corners rounded. Antero- 83, 87, fig. 3ge-f. lateral corners of pereonites, especially of 3-5, rounded, setose, coxae visible on all Material examined.-20+ specimens, pereonites in dorsal view. Pleon consisting FTP-5, Ft. Pierce Inlet, large barnacle of short anterior pleonite lacking free lateral clumps with orange sponge and algal turf margins, plus subcircular pleotelson. Eye on boulders inside inlet, shallow infratidal, consisting of 2 ommatidia. Antennular fla- 30 May 1995. gellum of 3 articles, terminal and subter- Previous records.-Belize, intertidal. minal articles each bearing single aesthe- tasc. Antennal flagellum of 13 articles. Iais jioridana, new species Mandibular palp of 3 articles, article 2 with Figs. 2, 3 2 stout setae, article 3 with distal row of 7 Material examined.-Holotype, USNM setae; incisor of about 6 sclerotized cusps; 243843, 1 0' tl 1.35 mm, Paratypes, USNM spine row of 4 or 5 setae; lacinia of 2 cusps; 243844, 10 0' tl 1.26-1.40 mm, 12 ovig- molar distally truncate with 2 distomesial erous '? tl 1.71-1.82 mm, 10 non-ovigerous setae. Maxilla 1, inner ramus with 4 distal ,?, 50+ juveniles, sta FTP-22, on Sphae- setae, outer ramus with about 10 pectinate roma terebrans in rotten wood, Taylor distal setae. Maxilla 2, 2 outer lobes each Creek near Rt. 1, intertidal, 10 ppt., 25 Apr with 4 distal fringed setae. Maxilliped; en- 1996. dite broad, distolaterally convex, with about 7 fringed setae and 8 simple setae; palp ar- rial of both I. californica and I. singapo- ticles setose on mesial margins. rensis reveals several differences that rein- Pereopod 1, dactylus bearing 2 claws; pe- force the view that the Florida material rep- reopods 2-3, 5-7, dactyli each with 3 resents an undescribed species. The two claws. Pereopod 4 considerably shorter than distal articles of the antennule differ in pro- 3 or 5, dactylus with 2 claws, propodus portions, the penultimate articles especially with single stout distal claw. Pleopod 1, being more slender and elongate on the two rami fused for about 4/5 of total length, dis- previously described species. The antennal tal lobes rounded, bearing 9 setae distally flagellum has fewer articles in the Florida per side. Pleopod 2, protopod semicircular, material (13) than in I. californica (20) and canula not reaching beyond distal angle of I. singaporensis (24). The distal propodal protopod. Uropodal rami both longer than spine of pereopod 4 in the male of I. cali- protopod, exopod about 1/3 longer than en- fornica is noticeably more elongate than in dopod, each with 4 elongate distal simple the Florida and Asian material. Iais califor- setae. nica is a larger species (0 2.49 mm mean Female: Brood pouch containing up to 8 length, n = 15; ovigerous Cjl 2.55 mm mean eggs. Pleonal operculum ovate, midlength length, n = 11) than either the Florida spe- about 2/3 greatest width, with 4 Of 5 fine cies (0 1.34 mm mean length, n = 10; marginal setae. ovigerous Cjl 1.76 mm mean length, n = 10) Remarks.-Of the eight described spe- or I. singaporensis (0 1.3-1.7 mm, ovig- cies of Iais (see Wilson & Wagele 1994), erous Cjl 1.4-1.7 mm). The stylet of pIeopod at least three occur commensally with 2 of the male is more slender and elongate sphaeromatid isopods, as does the present in the Florida species than in I. singaporen- species, which is found in association with sis. Sphaeroma terebrans. Several species (e.g., Etymology.-The specific name derives I. aquilei Coineau, 1977; I. elongata Si- from Florida, from whence the species is vertsen & Holthuis, 1980; see Kensley recorded. 1994) also perform mate-guarding as is seen in the present material, with the male Family Joeropsidae clasping a manca female with the shortened Joeropsis coralicola Schultz & specialized pereopod 4. McCloskey, 1967 Given that some species of Sphaeroma, Joeropsis coralicola Schultz & McCloskey, especially those that bore into mangroves, 1967:103-107, figs. 1-39.-Kensley & have wide distributions, and have been im- Schotte, 1989:88, fig. 40g.-Camp et aI., plicated in introductions along with their 1998:133. commensals (Rotramel 1972, 1975), it is necessary to compare the present material Material examined.-ll specimens, sta closely with I. californica (found on Sphae- FTP-5, Fort Pierce Inlet, on large barnacle roma quoyanum), in case the present spe- clumps with orange sponge and algal turf cies was somehow introduced to the east on boulders inside inlet, shallow infratidal, coast of the United States, where Sphaero- 30 May 1995. ma terebrans is the available host. How- Previous records.-North Carolina to ever, Iais fioridana more closely resembles Florida Middle Grounds, Gulf of Mexico, I. singaporensis Menzies & Barnard, 1951 25-33 m. (see Muller & Brusca 1992) especially in Joeropsis tobagoensis Kensley & Schotte, the general habitus and in possessing 1994 rounded anterolateral lobes on the pereoni- tes, than I. californica (Richardson, 1904). Joeropsis tobagoensis Kensley & Schotte, Comparison with recently collected mate- 1994:482, 486, fig. la-o. Fig. 2. !ais floridana, new species: A, habitus, dorsal view, scale = 0.5 mm; B, antenna; C, antennule; D, maxilliped; E, maxilla I; F, left mandible; G, right mandible (palp omitted); H, maxilla 2. ~ ) ~H \

Fig. 3. lais jioridana, new species: A, pereopod I propodus and dactylus; B, pereopod 2, propodus and dactylus; C, pereopod 3; D, male pereopod 4; E, uropod; F, male pleopod 1; G, male pleopod 2; H, female operculum. Material examined.-18 specimens, sta conut Point, sweep through Syring odium on FTP-5, Fort Pierce Inlet, on large barnacle Inlet side, 0.5-1 m, 26 Jun 1997.-1 juv., clumps with orange sponge and algal turf sta FTP-60, Wabasso Causeway Park, sub- on boulders inside inlet, shallow infratidal, merged rotten wood, 20-40 cm, 26 Jun 30 May 1995. 1997. Previous records.-Tobago, intertidal to Previous records.-Panama; Belize; 5 m. Cozumel, Mexico; Antilles to Florida Keys; Gulf of Mexico; N. & S. Carolina; intertidal Suborder Flabellifera to 55 m. Family Cirolanidae Anopsilana jonesi Kensley, 1987 Family Corallanidae Excorallana sexticornis (Richardson, Anopsilana jonesi Kensley, 1987:565-568, 1901) fig. 5a-j, 6a-h.-Camp et aI., 1998:135. Corallana sexticornis Richardson, 1901: Material examined.-l 9, sta FTP-12, 518, fig 9. North Fork St. Lucie River at Riverside Excorallana sexticornis: Delaney, 1989: Park on Port St. Lucie Blvd., rotten wood 38.-Kensley & Schotte, 1989:165, figs. around dock, intertidal to 1 m, salinity 10 75e-f, 76d-f.-Camp et aI., 1998:135. ppt., 1 Jun 1995.-1 0, 1 juv., sta FTP-27, Indian River Lagoon near mouth of Sebas- Material examined.-l 9, sta FTP-14, tian River, rotten submerged wood on small Ft. Pierce Inlet, barnacles, sponges, algal island, in low turf of Enteromorpha and turf on blocks in inlet, intertidal, 23 Apr Ceramium, 0.5 m, salinity 15 ppt., 17 Sep 1996.-1 ovigerous 9, sta FTP-15, Ft. 1996.-1 0, 1 9, sta FTP-29, Sebastian Pierce State Recreational Area, rotten wood River, first island inside mouth, on rotten piles with encrusting algae, intertidal, 23 wood at shore, salinity 15 ppt., 17 Sep Apr 1996.-1 9,3 juvs., sta FTP-17, North 1996. Fork St. Lucie River, Riverside Park, rotten Previous records.-Belize; Florida; in submerged wood on mud with numerous estuarine mangroves. barnacles and shells, 10-50 cm, 23 Apr 1996.-2 9, sta FTP-33, Jim Island near Ft. Cirolana parva Hansen, 1890 Pierce Inlet, dead submerged wood at edge of mangrove island, with algal mat, 0.-0.5 Cirolana parva Hansen, 1890:340-341, pI. m, 18 Sep 1996.-1 9, sta FTP-38, Sebas- II, fig. 6-6b, pI. III, fig. I-ld.-Bruce & tian Inlet State Park, gravel inlet, south side, Bowman, 1982:325-333, figs. 1, 2.- east of bridge, algal clumps, sponge on Kensley & Schotte, 1989: 135, fig. 59d- boulders, strong wave and wash action, e, 6O.-Camp et aI., 1998:135. 0.5-1.0 m, 26 Jun 1997.-1 9, sta FTP-61, Material examined.-2 9, sta FTP-38, North Hutchinson Island, near causeway, Sebastian Inlet State Park, gravel and peb- rocks with algal turf, 0.1 m, 27 Jun 1997.- bles in pockets around granite boulders, in- 1 0, 1 9, 1 juv., sta FTP-71, Ft. Pierce fratidal, 19 Sep 1996.-1 9, 1 juv., sta Inlet, north bank, algal turf on boulders, FTP-51, Sebastian Inlet State Park, south low tide level, 19 Aug 1998. side of inlet, algal clumps on granite boul- Previous records.-Belize; Puerto Rico; ders, 0.5 m, 25 Jun 1997.-1 juv., sta FTP- Cuba; Florida; shallow infratidaI. 52, Sebastian Inlet State Park, south side, Family Sphaeromatidae shallow embayment at campsite in State Cassidinidea ovalis (Say, 1818) Park, 1/2 mile from mouth in lagoon, 0.5 m, 25 Jun 1997.-1 juv., sta FTP-57, Se- Naesa ovalis Say, 1818:484-485.-Rich- bastian Inlet State Park, lagoon near Co- ardson, 1900:224, 1901:537. Cassidena lunifrons: Richardson, 1900: Previous records.-Panama; Belize; 222. Trinidad; Dominica; Cuba; Gulf of Mexico; Cassidina lunifrons: Richardson, 1901:533, Florida to New Jersey; intertidal-l m. fig. 14. Cassidisca lunifrons: Richardson, 1905: Paradella dianae (Menzies, 1962) 273, figs. 283-284.-Schultz, 1969: 115, Figs. 4, 5 fig. 158. Dynamenopsis dianae Menzies, 1962:341, Cassidinidea lunifrons: Hansen, 1905: fig. 3. 130.-Menzies & Frankenberg, 1966:44, Paradella dianae: Harrison & Holdich, fig. 20.-Kussakin, 1979:336, figs. 199- 1982:103, fig. 6.-Kensley & Schotte, 200.-Bruce, 1994: 1151. 1989:224, fig. 98a-c. Cassidinidea ovalis: Schultz, 1969: 115, fig. l59.-Kensley & Schotte, 1989:208, fig. Material examined.-3 0', FTP-14, Ft. 92b-e.-Bruce, 1994: 1151, fig. 45.- Pierce Inlet, barnacles, sponges, algal turf Camp et al., 1998: 136. on blocks in inlet, intertidal, 23 Apr Dies arndti Ortiz & Lalana, 1980:161-164, 1996.-6 0', 14 ovigerous «, 30+ imma- figs. 1-8. ture, FTP-15, Ft. Pierce Recreational Area, Dies barnardi Carvacho, 1977:14-17, figs. rotten wood piles with encrusting algae, in- 4a-f, 5a-i. tertidal, 23 Apr 1996.-6 0', 4 ovigerous «, 25 + immature, FTP-17, Riverside Park Material examined.-l «, FTP-l, North on North Fork St. Lucie River, rotten sub- Fork St. Lucie River, rotten wood in man- merged wood on mud with barnacle shells, groves, 0.5 m, salinity 1-20 ppt., 29 May salinity 0 ppt., 10-50 cm, 23 Apr 1996.- 1995.-3 specimens, FTP-12, North Fork 1 0', 2 ovigerous «, 15+ immature, FTP- St. Lucie River at Riverside Park, Port St. 19, Jack Island near Ft. Pierce Inlet, Cau- Lucie Boulevard, rotten wood around dock, lerpa and empty shells near oyster bank, 0.5 intertidal, salinity 10 ppt., 1 Jun 1995.- m, 24 Apr 1996.-100+ specimens, FTP- specimen, FTP-13, North Fork St. Lucie 38, Sebastian Inlet State Park, gravel and River at marina on Prima Vera Boulevard, pebbles in pockets around granite boulders dead submerged wood in shore grass at riv- lining inlet, infratidal, 0-32", 19 Sep er's edge, 0.1 m, salinity 2.5 ppt., 1 Jun 1996.-92 specimens, FTP-39, same local- 1995.-4 specimens, FTP-17, Riverside ity, on encrusting orange sponge with red Park on North Fork St. Lucie River, rotten branching algae on jetty rocks ca. 100 ft submerged wood on mud with numerous from end of south jetty, 0.5 m, 19 Sep barnacles and shells, 10-50 cm, salinity 0 1996.-2 0', 1 immature, FTP-42, same lo- ppt., 23 Apr 1996.-30+ specimens, FTP- cality, 50 m west of bridge off south jetty, 23, mouth of North Fork St. Lucie River at in Caulerpa, depth 6", 19 Sep 1996.-38 U.S. Rt. 1 and Fern Rd., oysters shells and specimens, FTP-44, same locality, 50 ft in- rocks on muddy bank, intertidal, salinity 0 land from bridge, mixed algae on sandy/ ppt., 25 Apr 1996.-1 ovigerous «, FTP- shelly bottom with rocks and boulders, 0.5 29, Sebastian River, first island west of m, 19 Sep 1996.-1 0', 7 «, 2 juvs., FTP- mouth, rotten submerged wood at shore, sa- 45, same locality, red filamentous alga on linity 15 ppt., 17 Sep 1996.-1 specimen, rocks and south jetty wall, 30 cm, 19 Sep FTP-30, same locality as above, in organic 1996.-1 0', 4 ovigerous «, 3 immature, detritus, intertidal, 17 Sep 1996.-1 speci- FTP-46, Sebastian Inlet State Park, north men, FTP-31, Sebastian River, island op- side, gravel and pebbles among granite posite MacDonald State Campground, sub- boulders ca. 100 m inside inlet, 10-50 cm, merged leaf litter, Typha and Crinum in 20 Sep 1996.-12 0', 11 ovigerous «, 73 shallow water, salinity 0 ppt., 17 Sep 1996. «, 40 juvs., FTP-48, Sebastian Inlet State Park, south side, rubble and stones in 3/1 possess penes, suggesting that a protogyn- pools at top of shore, with blue-green alga, ous sex change occurs in P. dianae. In Fig. 25 Jun 1997.-1 0, 5 <2, 1 juv., FrP-50, 4C, a scanning electron micrograph, the same locality, granite boulder shore inside ovigerous female shows both the opening of bridge, stones and rubble with low algal of the marsupium between the fourth pe- turf, at bottom of shore with strong wave reopod bases, and penes that are character- and wash action, 25 Jun 1997.-6 subadult istic of a sub adult male. The penes of the 0, 3 ovigerous <2, 4 <2, 6 juvs., FrP-51, adult male are long, very slender in the dis- same locality, algal clumps on boulders in- tal half, tapering to acute apices and ex- side of bridge, 0.5 m, 25 Jun 1997.-2 <2, tending beyond the endopod of pleopod 1 FrP-53, same locality, outside of bridge, al- by nearly 50%. The ovigerous hermaphro- gal clumps and sponge on boulders in dites show no retention of either appendix strong wave and wash action, 26 Jun masculina or adult penes, which suggests 1997.-1 0, 1 subadult 0, FrP-54, same that protandry is not the condition here. locality, boulders outside bridge, chunks of This would seem to be the first record of reef worm rock, 26 Jun 1997.-7 ovigerous protogyny in the sphaeromatid subfamily <2, 14 juvs., FrP-56, Sebastian Inlet State Dynameninae. Among the Isopoda, pro tan- Park, lagoon near Coconut Point, Entero- drous sex change is well known in the fam- morpha/Ulva mats exposed at low tide on ilies Anthuridae (Wagele 1979), Cymothoi- boulders at top of shore, surface, 26 Jun dae (Brusca 1981), several families of the 1997.-1 0, 4 ovigerous <2, FrP-63, large suborder Epicaridea (Kozloff 1987), and in boat canal at Smithsonian Marine Station, at least one oniscidean (Brook et al. 1994). in floating Sargassum, at surface, 25 Jun Members of the Sphaeromatidae known to 1997.-1 0, 4 ovigerous <2, FrP-66, Se- exhibit protogyny are members of other bastian Inlet State Park, chunks of reef subfamilies: Gnorimosphaeroma oregon- worm tubes on rocks at low tide level, in- ense (Dana, 1853), G. luteum Menzies, side inlet, 0-50 cm, 18 Aug 1998.-4 sub- 1954 (both Sphaeromatinae), and Paralep- adults, 1 ovigerous <2, FrP-68, same local- tosphaeroma glynni Buss & Iverson, 1981 ity, gravel rubble and empty shells in pock- (Cassidininae). Bruce (1994:1132) further ets between rocks, inside inlet, 0-20 cm, 18 mentions observing hermaphroditism in Aug 1998.-3 ovig <2, FrP-69, same lo- Paracassidina munna, having "developed cality, algal turf with hydroids on granite male characters in ... pleopod 2" as well boulders inside inlet, 0-50 cm, 18 Aug as oostegites in the same specimen. Pleopod 1998.-3 ovigerous <2, FrP-70, Ft. Pierce 2 in the ovigerous females of P. dianae did Inlet, north bank, reef worm tubes on boul- not display any male characters. The pro- ders in inlet, low tide, surface, 19 Aug portion of ovigerous females with penes in 1998.-2 ovigerous <2, FrP-7l, same lo- G. oregonense (31 % of females collected in cality, algal turf at low tide level on boul- the field) is comparable to that of P. dianae ders, surface, 19 Aug 1998. recorded here. Brook et al. (1994) provide Previous records.-Baja California, a discussion of the adaptive value of pro- Mexico; Queensland, Australia; Western togyny as compared to protandry, the com- Australia; Marshall Islands; Hong Kong; moner reproductive strategy in Crustacea. Puerto Rico; Florida; intertidal. Remarks.-While Paradella dianae has Paradella quadripunctata (Menzies & previously been recorded from the IRL, an Glynn, 1968) aspect of its biology has come to light that Fig. 6 demands mention. Fifty-one ovigerous females out of 182 Dynamenella quadripunctata Menzies & examined (about 28%) were observed to Glynn, 1968:60-61, fig. 28a-n. Fig. 4. Paradella dianae: A, ventral cephalon; B, ovigerous female, ventral view, arrow indicating opening of brood pouch between fourth pereopods; C, ovigerous female with brood pouch opening and penes; D, ovig- erous female, close-up of ventral pleotelson and penes.

Paradella quadripunctata: Harrison & mature, FTP-51, same locality, algal clumps Holdich, 1982: 101.-Kensley & Schotte, on boulders, 0.5 m, 25 lun 1997.-25+ im- 1989:224-225, fig. 98f-g.-Carnp et aI., mature, same locality, FTP-53, south side, 1998:136. outside bridge, algal clumps and sponge on boulders in strong wave and wash action, Material examined.-l ovigerous Banana River off Merritt Island, armed and 4 fringed spines on inner ramus; Indian River Lagoon, amongst encrusting outer ramus having 4 fringed spines on each oysters, barnacles and algal turf, 0.5 m, 31 lobe. Maxillipedal endite with 1 coupling May 1995.-USNM 285362, 1

fringed spine at posterodistal corner; merus terodistal lobe bearing several long setae. with small anterodistal lobe and single Pereopod 5, carpus with single stout fringed fringed, posterodistal spine. Pereopod 4, spine at posterodistal margin; anterodistal propodus having single plumose seta at an- lobe of merus having several long setae. Pe- terodistal angle; carpus with single plumose reopod 6, carpus with plumose seta and seta at each distal margin; merus with an- stout fringed spine at antero- and poster- Fig. 8. Sphaeromopsis sanclaluciae, new species: A, pereopod 1; B, pereopod 2; C, pereopod 3; D, pereopod 4; E, pereopod 5; F, pereopod 6; G, pereopod 7. odistal margins respectively; anterodistal fringed, 2 unarmed, and 1 plumose setae; lobe of merus with several long setae; is- anterodistal margin of merus with 2 long chium bearing 3 long setae on anterodistal and 1 short setae; ischium and basis with margin. Pereopod 7, propodus with single several setae on anterior margins. plumose seta at anterodistal comer; distal Penial rami basally fused, elongate, wid- margin of carpus with 3 fringed spines, 3 ening at 1/3 length and tapering to narrowly Fig. 9. Sphaeromopsis sanctaluciae, new species: A, adult male, dorsal pleotelson; B, ventral cephalon; C, adult female, dorsal pleotelson; D, adult female, ventral p1eotelson. rounded apices. In subadult male, penial pleats and setae on mesial margins; exopod rami fused basally with subparallel margins with transverse suture and 3 spinulose boss- and rounded apices. Pleopod 1, basis with es. Rami of uropods subequal in length, 3 coupling hooks; exopod subrectangular in margins entire, bearing short setae. shape, slightly broader than endopod. Ple- Female: As in male except in secondary opod 2, basis and exopod as in pleopod 1; sexual characters; generally smaller. endopod broad, subrectangular; appendix Remarks.-The new species is the sev- masculina articulating basally, broad prox- enth member of the genus to be described imally, tapering to narrow apex extending and the third from the western hemisphere, somewhat beyond apex of endopod. Pleo- following S. mourei Loyola e Silva, 1960 pod 3, basis broadly rectangular with 3 cou- and S. heardi Kensley & Schotte, 1994. pling hooks; endopod triangular without ar- Like S. minutus Javed & Yousef, 1995, it ticulation; exopod somewhat ovate. Pleo- lacks the "dense pads of setae" on posterior pod 4, both rami broad with transverse margins of the pereopods, previously pleats. Pleopod 5, both rami with transverse thought to be a generic character (Holdich & Harrison 1981). The comparatively and rocks, 25 Jun 1997.-1

Stenosoma filiformis Say, 1818:424. We are grateful to the staff of the Smith- Eriehsonella filiformis: Kensley & Schotte, sonian Marine Station, and especially 1989:258, fig. lO8c.-Camp et al., 1998: Woody Lee and Sherry Reed for assistance 137. with this project in the field, and for pro- Material examined.-7 specimens, 1 viding ideal working conditions at the lab. ovigerous crustaceans of the Caribbean. Smithsonian propinquae Musei Hauniensis. Et Bidrag til Institution Press, 308 pp. Kundskaben om nogle Familier af isopode ---, & ---. 1994. Marine isopods from the Krebsdyr.-Kongelige Danske Videnskabernes Lesser Antilles and Colombia (Crustacea: Per- Selskabs Skrifter, 6te Raekke, Naturvidenska- acarida).-Proceedings of the Biological Soci- belig og mathematisk Afdeling 3:239-426. ety of Washington 107:482-510. ---. 1905. On the propagation, structure, and clas- ---, W. G. Nelson & M. Schotte. 1995. 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The marine isopod fauna of Bahia de Page & Co., New York. 337 pp. San Quintin, Baja California, Mexico.-Pacific ---. 1905. A monograph on the isopods of North aturalist 3(11 ):337-348. America.-Bulletin of the United States Nation- ---, & J. L.·Barnard. 1951. The isopodan genus al Museum 54:1-727. lais (Crustacea).-Bulletin of the Southern Cal- Rotramel, G. 1972. lais californica and Sphaeroma ifornia Academy of Sciences 50(3):136-151. quoyanum, two symbiotic isopods introduced to ---, & D. Frankenberg. 1966. Handbook on the California (lsopoda, Janiridae and Sphaeroma- common marine isopod Crustacea of Georgia. tidae).-Crustaceana, Supplement 3: 192-197. ---. 1975. Observations on the commensal rela- University of Georgia Press: Athens, Georgia. tions of lais californica (Richardson, 1904) and 93 pp. Sphaeroma quoyanum H. Milne Edwards, 1840 ---, & P Glynn. 1968. The common marine iso- (Isopoda).-Crustaceana 28:247-256. pod Crustacea of Puerto Rico: a handbook for Say, T. 1818. 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