Review of the genera Ividia, Folinella, Oscilla, Pseudoseilla, Tryptichus and Peristichia (Gastropoda, Pyramidellidae) from Brazil, with descriptions of four new species

2008·9.8 MB·English

by  Alexandre D Pimenta

THE VELIGER
TheVeliger 50(3):171-184(October 1, 2008) © CMS, Inc., 2007
Review ofthe Genera Ividia, Folinella, Oscilla, Pseudoscilla, Tryptichus and
Peristichia (Gastropoda, Pyramidellidae) from Brazil, with Descriptions of
Four New Species
ALEXANDRE D. PIMENTA,1 FRANKLIN N. SANTOS2 and RICARDO S. ABSALAO23
1 Departamento de Invertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista,
Rio de Janeiro, RJ, Brazil, CEP: 20940-040
(e-mail: [email protected])
2Departamento de Zoologia, Instituto de Biologia, Universidade do Estado do Rio de Janeiro, Avenida Sao
Francisco Xavier 524, Maracana, Rio de Janeiro, RJ, Brazil, CEP 20550-900
(e-mail: [email protected])
1Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro
(e-mail: [email protected])
Abstract. The taxonomy of the species belonging to the genera Ividia Dall & Bartsch, 1904, Folinella Dall &
Bartsch, 1904, Oscilla A. Adams, 1961, Pseudoscilla Boettger, 1901, Tryptichus Morch, 1875 and Peristichia Dall,
1889from Brazil is reviewed. Thefollowingspeciesare reported: Ividiahavanensis(Pilsbry&Aguayo, 1933), Folinella
robertsoni (Altena, 1975), Pseudoscilla babylonia (C. B. Adams, 1845), Peristichia agria Dall, 1889, Oscilla somersi
(Verrill & Bush, 1900) and Triptychus niveus Morch, 1875; the last two species are for the first time recorded from
Brazil. Four new species are described: Triptychus litosbathron n.sp. is characterized by its smooth base; Oscilla
notialisn.sp. and Oscilla aquilonian.sp. differ in the degree ofprojection ofthe protoconch nucleus, and both species
arecloselyrelated to Oscilla tornata(Verrill, 1884), differingindetailsofspiral sculpture; and Peristichialeptan.sp. is
distinguished from other Perictichia species by its slender shell, absence ofa columellar fold, and by the numerous
spiral cords on the base.
Key Words: Mollusca, Pyramidellidae, Odostomiinae, taxonomy, Brazil, Ividia, Folinella, Oscilla, Pseudoscilla,
Tryptichus, Peristichia.
INTRODUCTION
the characters ofthe shell overlap somewhat, and clear
differences cannot be established. While some authors
The family Pyramidellidae from Brazil is the subject of (e.g., Dall & Bartsch 1904, 1909; Abbott 1974; Diaz &
a major taxonomic review that has already yielded Puyana 1994) consider the genus Odostomia in a very
somepublished results (Pimentaetal., 2000; Pimenta& broad sense, with many subgenera, others have been
Absalao 2001a, 2001b, 2002, 2004a, 2004b; Absalao et using many of these subgenera at full generic rank,
al., 2003), in addition to others in preparation. In each giving rise to narrower definitions ofeach genus. Many
ofthese papers, selected genera were studied, common- of these genera have been interpreted differently in
ly resulting in amendments to the taxonomic status of several studies in different geographic areas (e.g.,
pyramidellid species reported from Brazil, as well as Robertson 1978; Jong & Coomans 1988; Linden &
revealing several new species and expanding the Eikenboon 1992; Schander 1994; Pehas et al., 1996;
geographic distributions for known species in the Penas & Rolan 1998; Redfern 2001, among others),
Western Atlantic. In this paper we deal with the often giving rise to different generic allocations for the
Odostomiinae and Pyramidellinae genera Ividia Dall & same species. We believe that a consensus will be
Bartsch, 1904, Folinella Dall & Bartsch, 1904, Oscilla reached only after more detailed studies, including the
A. Adams, 1861 Pseudoscilla Boettger, 1901, Trypti- careful comparison of type species, and eventually
,
chus Morch, 1875 and Peristichia Dall, 1889. adding anatomical or molecular data.
The supraspecific classification of the family Pyr- Our goal, in this paper, is not to provide precise
amidellidae is controversial. There is no consensus definitions for supraspecific taxa, but rather a more
about the status ofmost ofthe more than 300 generic taxonomically accurate knowledge ofthe diversity and
or subgeneric names (Schander et al., 1999). Particu- geographic range of the Brazilian pyramidellid fauna.
larly, in most genera of the subfamily Odostomiinae, In most cases, we adopted a conservative option.
Page 172 The Veliger, Vol. 50, No. 3
&
following previous allocations of the species herein Ividia havcmensis (Pilsbry Aguayo, 1933)
studied, thus avoiding new combinations. It should be
clear, then, that most of the generic allocations used (Figure 1A-E)
herein are to be considered provisional and changes Odostomia (Miralda) havcmensis Pilsbry & Aguayo,
basAebdbroenvinaetiwonevsiudseendc:e-aCroellteocbteioenxsp:eActNeSdPin-thAecafudteurmey. i1l9l3u3s:tra1t1e8d,);piA.bb6,otftig.(14:974O:de29&8, Sfpige.er3s62(71)9;72V:ok9e,sno&t
of Natural Sciences of Philadelphia, Philadelphia, Vokes (1983: 32, pi. 30, fig. 12); Diaz & Puyana
cUUonSliAlve;ecrtisCoinodalCdo.elMiondloR.eUdEEfsRetJrand;o-DdCOooUlFeRcPiaoEo d-deDeeJpaManoreltiuraosm;ceonCstoRddae- Mirf(i1ag9l.9d48a:);h2aR3v5ia,onsepnis.(i1sL9:7X0IO:lXs,1s3o4f,ing.&19937M45c):.Gi1n43t,yp(i.194538,: 4f4ig,.pi6.651,,
Oceanografia da Universidade Federal dePernambuco,
Recife; IBUFRJ - Instituto de Biologia, UnivMerNsHidNade J1o98n5g:&16C5o,opim.a5n4s, f(i1g9.8788:4,1241,99p4i:. 61,8286,,pfii.g.626.51f)i;g.M8e7l7l)o;
Federal do Rio de Janeiro, Rio de Janeiro; -
Museum National d'Histoire Naturelle, Paris; MNRJ - (1990: 40, fig. 9); Barros (1994a: 74, not illustrated).
Museu Nacional / Universidade Federal do Rio de Ividia havanensis: Redfern (2001: 144, pi. 65, fig. 595).
Janeiro, RiodeJaneiro; MZSP- MuseudeZoologiada
Universidade de Sao Paulo, Sao Paulo; USNM - Type material: Holotype ANSP 159722.
National Museum of Natural History, Washington,
DC; YPM - Peabody Museum of Natural History / Type locality: La Chorrera, Habana, Cuba.
YAMauMlsAeeSuUSmnEivDerASsmist-ty,eArdNaeMmwu,ltiHdAaimvssecnitp;elridnZaarMmy;AAm--EaxZzpooeodnliotgiSiohsnecsl:hf SDMaEOtDeUrSFiaPlsEteaxa3m2i2n8e,d:[1P];ar-aRsitaote:GrIaBnUdFeRJdo136N9o3r,teAMsAtaSte-:
Sedimentary Study, Research Vessel "Columbus Isel- 5012, sta 17 (05D0O1.U3F17P'ES / 36°23.507'W,
ing" Coll.; GEOMAR XII - Comissao Oceanografica 9.1 m), 05/iiiv/2002, [1]; 5013, sta 30
VGsDRDeeeeuesaocfssrlureecorenlhgssvionoV"aselePvsErMiVsxoamiepfrveleeiondsnstis"tohoPiardrooaCnXfiW;IeeZ.InsPo,tsiAnofNBraDieOcCsoWEAnT.caSeor-ndBTCPo"oeerlmcsloinn.cgocao;llrraloMad.g;m"DEiaxc5Rccod5lo,EelulsV-.ARiIpveMa(Zosa,eeiErxaocEiRreoaecpnoh-t- p2RC(Mr00aaNe04tbt2°aHao,4,)N7'(F[,M3p1e]ra0r;a.rMniC8aa-a3NanPn7bdhR"deoeaSorJonG,d(aa/eeimn[bbN3s3u]uoe;6)car,4Mdoo0a['Nn10hs2Hd]t2a;aoN.ts6eAM,:7rNcc8ohIP"HriaWBapNu,ieUls,li)F,s,Rt1S0a7Ja[8.1/3o(6v]M1im;La1i)u/r1,iM15i9z3aN9,29(H7F,a/aIrNvr[lei3ihi,i]-aa;/
wGDaherpeoanurpntoaat,me"edn);Pteo-tCrodolebercZatosoorlSso:Ag;iAaGE,q.-IRBZeUosFoeRaJrCo;clhl.NVeO-ssAeeqClui"pA-esRtdero-o en[2hn]av;)i,rMMo[nNN2s];HHdNNe,,RecRiefce1i,0f8[e62]2;(,pMrPNaaiuHaliNsd,toaC(Ppairbnaoai)a,(dPae[d2]Cr;oansMcPeNriecHtaaNos)),,,
dsBNreaaOansrhiAclah;N,"VeNsM-OsaeRrAleiSs"neAhala-rmcidhrRoaensBVtereaeassrsiCeclal.hma"VrAeans,tsa"erleMsa",rA"ilnmMhiaarradinotnehBaraSsaidllo;- s[S3I8te7]Bar;°tUg0ei:7Fp'RIe5JB6sUt6"aF3tW7Re,4:J,DP1o8a0f5Ou3f7lU13iA,sFbmtr)oPaof,Elfh(C1poa59rs0/am,i1ibva1u1/,r929d0is00a,t2,a,1[C399o][9.;1n23]c;-,eE(i[s-11cpB15ai°a]ro;3hi)0iIt,'aoB08US[s1aFt]";anRStteJo-:/
8998, off Aracruz, 18/xii/1989, [1]; IBUFRJ 8481, off
MATERIAL and METHODS Piuma, 1993, [1]; IBUFRJ 8656, offPiuma, 1993, [1];
Rio de Janeiro state: Col.Mol.UERJ 1977, Enseada de
The determination of the material was based on
comparisons against type material and/or original lDo.iUsERRJio3s3,36,IlhIalhaGrGarnadned,e 1st9a-2106/x(iR/1o9c9h6e,do[1]S;aCooPle.dMroo-,
dliesstsc,ritphteionnusmabnedrililnussitdreatbironasc.keItnstihnedimcaatteersiatlheexnaummibneerd 23334°92,.86I8l'hSa /Gr4a4n32d.e72s2ta'W1,5 1(0Pom)n,ta[1]G;raCnodle.MToilm.uUiEbRaJ,
eolofmtpssthfeylrlsoshmeillnMseNfarcHohmNlBotrw.aezrTiehliicasonlraleenpcdotreftdoriaesliobgnnagsceotdlhleeecnnttioiorrnetslh.yeaAoslntl p2Pr3aa°ui3la.o76sdt2aa'tSeF:i/Mgu4Ze4iS°r3Pa6,.806A37n88g5'r,Wa,PAd7oDms)C,TRe[is8s]t;,a6I15B979U78F,(R25[J7°]1;51.3-76S68a'8oS,
Brazilian coast by P. Maestrati from 1984 to 1989.
/ 45°04.62'W, 124 m), offSao Paulo state [1].
SYSTEMATICS Distribution: USA: Florida (Abbott 1974), Texas(Ode&
Speers 1972); Caribbean: Habana, Cuba (Pilsbry &
Subfamily Odostomiinae Pelseener, 1928 Aguayo 1933); Yucatan Peninsula, Mexico (Vokes &
Genus Ividia Dall & Bartsch, 1904 Vokes 1983); Panama (Olsson & McGinty 1958);
Ividia Dall & Bartsch, 1904: 1 1. Type species: Parthenia Colombia (Diaz & Puyana 1994); Bahamas (Redfern
armata Carpenter, 1857, Mazatlan, by original 2001); Aruba, West Indies (Jong & Coomans 1988);
designation. Brazil: Atol das Rocas and Alagoas (Rios 1994);
A. D. Pimenta et al., 2007 Page 173
Figure 1. A-E, Ividia havanensis (Pilsbry & Aguayo, 1933): A, holotype (ANSP 159722); B, E, MNRJ 10822; C-D,
Col.Mol.UERJ 1977. A-C, whole shells (respective lengths: 1.9 mm; 1.7 mm; 1.7 mm); D, protoconch; E, detail oflast whorl; F,
holotype ofIvidia abbotti (Olsson & McGuinty, 1958) (ANSP 211912, length: 2.0 mm); G-I, Folinella robertsoni (Altena, 1975)
(MNRJ 10823): G, whole shell (length: 1.6 mm); H, last whorl; I, protoconch. Scale bars: 200 urn.
Canopus, Ceara (Barros 1994a); Pernambuco (Mello on the other hand, considered that Parthenia armata is
1990; this study); Para, Rio Grande do Norte, Fernando not congeneric with the type species of Miralda
de Noronha Archipel, Maranhao, Sergipe, Bahia, (Parthenia diadema A. Adams, 1860), and therefore
EspiritoSanto,RiodeJaneiroandSaoPaulo(thisstudy). considered Ividia a valid genus. This position was
followed by Turgeon et al. (1998) and Redfern (2001).
Remarks: The genus Ividia was proposed by Dall & In fact, the illustration ofMiralda diadema provided
Bartsch (1904) as a subgenus of Odostomia. This taxon by Dall & Bartsch (1906, pi. XVII, fig. 2) is quite
was later synonymized under Miralda A. Adams, 1863 distinct from the illustration ofIvidia armata by Dall &
by Dall & Bartsch (1909, p. 172), who argued that the Bartsch (1909: pi. 19, fig. 6). Ividiaarmata has a conical
type species that they selected for Ividia {Parthenia shell with two strong nodulose spiral cords in each
armata Carpenter, 1857) should be referred to Miralda. teleoconch whorl, and weaker spiral cords on the base;
Ividia havanensis (Figure 1A-E), Ividia abbotti (Ols- whereas Miraldadiadema has a somewhat globose shell
son & McGuinty, 1958) (Figure IF) and also Folinella with a pattern of axial ribs and spiral cords forming
robertsoni(see discussion below) were, in fact, included nodules where they cross. We, therefore, follow Ode
in Miralda, as a full genus (Olsson & McGinty 1958; (1993) in considering Ividia a valid genus.
Altena 1975; Rios 1994; Jong & Coomans 1988) and as Considering Ividia valid, Ode (1993) included Ividia
a subgenus ofOdostomia (Pilsbry & Aguayo 1933; Ode abbotti; Redfern (2001) included Ividia havanensis and
& Speers 1972; Abbott 1974; Vokes & Vokes 1983; Ividia robertsoni. However, while we agree with Ode
Diaz & Puyana 1994). (1993) and Redfern (2001) in regard to /. abbottiand I.
Although Schander et al. (1999) adopted the havanensis, we propose the new combination Folinella
synonymy between Miralda and Ividia, Ode (1993), robertsoni (see below). We consider that the shell ofthe
Page 174 The Veliger, Vol. 50, No. 3
MNHN
latterdiffers considerablyfrom typical Ividia species, in (praia de Candeias), [8]; Recife (praia do
MNHN
haxaivailnrgibtsh,rleaecskpiinrgalthceorndosduilnoesaecshpiwrhaolrclo,rdcsro(sFsiegdurbey 1thGi-n PMianra)a,nh[a8]o; state: MNHReNcifSeao(pLruaiiaz (daoreiPaipnrae)t,a),[11[]5;]; --
H), which fits well with the description of Ividella by Espirito Santo state: IBUFRJ 10856, Baia de Vitoria,
Dall & Bartsch (1909: 172-174, pi. 18, figs. 1 1, 1 la). 18/xii/1998, [2];-Rio deJaneiro state: IBUFRJ 7477, off
Lia decorata Folin, 1873 was referred to Miralda by Arraial do Cabo, 1993, [2]; Col.Mol.UERJ 3340, Uha
Ode & Speers (1972: 9) and may prove to be an Grande sta 15 (Ponta Grande Timuiba, 23°3.762'S /
additional species of Ividia, because the shell also has 44°36.038'W, 7 m), [2]; Col.Mol.UERJ 3351, Ilha
the nodulose spiral cords. Faber (1988) stated that Grande sta 15 (Ponta Grande Timuiba, 23;3.762'S /
"Odostomia havanensis Pilsbry & Aguayo, 1933 =Lia 44°36.038'W, 7 m), [2]; IBUFRJ 13689, Angra dos
decorata De Folin, 1873," but provided no further Reis (praia da Figueira), 1998, [4].
discussion on this possible synonymy. The illustration
provided by de Folin (1873: pi. 6, fig. 8) indeed Distribution: Suriname (Altena 1975); Caribbean:
resembles /. havanensis, but has a shell with spiral Colombia (Diaz & Puyana 1994); Bahamas (Redfern
nodules very close to each other and with more 2001); Brazil: Pernambuco, Maranhao (Mella 1990;
rounded summits. Barros 1994b; this study); Rio Grande do Norte;
Besides the records from the east coast ofthe U.S.A. Espirito Santo; Rio de Janeiro (this study).
and the Caribbean, Ividia havanensis .was listed and Remarks: The taxonomy and nomenclature ofFolinella
illustrated from Brazil by Rios (1994), in the genus
were discussed by Aartsen (1984), Aartsen et al. (1998)
Msipreaclidmae;nshofwreovmer,BraRziilo,s bpurtovriedpedrodnuoceidllutshteratoiroingsinaolf asenndiorScshyanndoenrymetofal.Ivi(d1e9l9l9a),Dawllho&cBoanrstisdcehr,ed19i0t9.asAsa
figure. Other records from Brazil include those of
demonstrated by Aartsen (1984), the type species of
tMheellnoor(t1h9e9a0s)tancodasBta.rrWoes (1n9o9w4a)p,refsreonmt trweocolrodcsaliotifesthoins FtoelriinzeeldlabyisnAummoeruoruasanagxiuallifaernednst.wTohitso tgherneuessipsircahlarriabcs-,
species from nearly the entire Brazilian north, northeast
equally strong and forming small knobs at their
and southeast coast, considerably enlarging its known crossings; this sculpture invades the base of the shell.
geographicrange in theWesternAtlantic, to about 25°S. The same pattern ofsculpture can be found in some of
Genus Folineila Dall & Bartsch, 1904 the species listed by Dall & Bartsch (1909) in the genus
Folinella Dall & Bartsch, 1904: 10, nom. nov. pro Ividella, which should thus be referredto Folinella (e.g..
Amoura de Folin, 1873 non Ainoura Forbes, 1845. F. quinquecincta Carpenter, 1856, F. delmontensis Dall
& &
Type species: Amoura anguliferensde Folin, 1873, by Bartsch, 1907, F. navisa Dall Bartsch, 1909, F.
&
monotypy. araniana Dall Bartsch, 1909).
The species herein included in Folinella was consid-
Folinella robertsoni (Altena, 1975) ered to belongin Miralda, as a full genus (Altena, 1975;
new combination Mello. 1990; Rios, 1994; Barros. 1994b) or as a
subgenus of Odostomia (Diaz & Puyana, 1994). Red-
(Figure 1G-I)
fern (2001), on the other hand, used the combination
Miralda robertsoni: Altena (1975: 75, fig. 30a-b); Mello Ividia robertsoni.
(1990: 40. fig. 8); Rios (1994: 188, pi. 62. fig. 878); The new combination Folinella robertsoni is pro-
Barros (1994b: 44, fig. 12a). posed herein based on similarities to the concept of
Odostomia (Miralda) cf. robertsoni: Diaz & Puyana Folinella, as adopted by Aartsen et al. (1998). Folinella
(1994: 235, pi. LXIX, fig. 935). robertsoni has three spiral cords in each whorl, crossed
Ividia robertsoni: Redfern (2001: 144. pi. 65, fig. 596). by thin axial ribs, with small nodulose spiral cords
(Figure 1G-I), which fits well within the concept of
Folinella (fide Aartsen et al., 1998).
Type locality: Shell ridge near Cupido on the Mar- Folinella robertsoniwas listed and illustrated by Rios
atakka, Nickerie District, Suriname. (1994), in the genus Miralda. He provided no illustra-
tions of specimens from Brazil, but reproduced the
DMaOteUrFiaPlEexamined: Rio Grande do Norte state: original figure, and recorded the range ofthe species in
5015, sta 01 (05°04.260'S / 36 20.303'W, Brazil as "northeast." Other records from northeastern
3.6 m), 06/viii/2002, [2]; -PernaMmNbuHcNo state: MNHN, Brazil are those of Mello (1990) and Barros (1994a).
Paulista (Maria Farinha), [19]; Cabo (praia de Thepresentpaperenlargestheknowngeographicrange
Gaibu), [10];MMNNHRNJ 10823 Paulista (praia da Con- ofF. robertsoniin the Western Atlantic up to about 23°
cMeiNcaHo)N, [5]; Cabo (enseada dos coraMis)N,H[8N]; S, on the coast ofRio de Janeiro.
Raposa (praia de Raposa), [15];
MNHN
Itamaraca (praia de Jaguaribe). [1]; Recife Genus Oscilla A. Adams, 1861
A. D. Pimenta et al., 2007 Page 175
Figure 2. A-F, Oscilla notialis n.sp.: A-E, holotype (MNRJ 10692); F, paratype (IBUFRJ 7595); A-B, whole shell (length:
1.9 mm); C, detail of sculpture on last whorl; D, Last whorl; E-F, protoconch; G-L, Oscilla aquilonia n.sp.: holotype (MNRJ
10825): G-H, whole shell (length: 1.53 mm); I-J, protoconch; K, detail ofsculpture on last whorl; L, last whorl; M, holotype of
Oscilla tornata (Verrill, 1884) (USNM 30083). Scale bars: 200 urn.
Oscilla A. Adams, 1861. Type species: Monoptygma state, sta 2.1 (11°23'21"S / 37°04'30"W, 99 m), 16/iv/
{Oscilla) cingulata. 2002. Paratypes: -Sergipe state: IBUFRJ 14077, type
DOUFPE
locality [3]; 5000, type locality, [9];
Oscilla notialis n.sp. DOUFPE 5006, sta 2.3 (11°24T4"S / 3705'08"W,
99 m), 16/W/2002, [2]; -Espirito Santo state: IBUFRJ
(Figure 2A-F) 14082, offEspirito Santo state, REVIZEECentral I sta
Dl (20°48'72"S / 41°09'33"W), 23/H/1996, [1]; -Rio de
Type material: Holotype: MNRJ 10692, off Sergipe Janeiro state: IBUFRJ 12316, Cabo Frio VII sta 6194,
Page 176 The Veliger, Vol. 50, No. 3
off Rio de Janeiro state, iii/1983, [2]; MNHN, Cabo whorls; between the cords, there are two wide spiral
Frio VII sta 6194, offRio de Janeiro state, iii/1983, [3]; furrows with microscopic axial growth lines. Base
IBUFRJ 9627, Arquipelago de Santana sta 2, Macae, slightly convex, with microscopic axial ribs and with its
3-5/v/1993, AG coll., [1]; IBUFRJ 6934, off Rio de adapical periphery marked by a peripheral, smooth
GEOMAR
Janeiro state, XII sta 89 (2147.8'S / spiral cord that corresponds to the third spiral cord in
40°16'W), 28/viii/1979, [3]; IBUFRJ 7595, off Rio de the teleoconch whorls, and bordered adapically by two
GEOMAR
Janeiro state, XII sta 76 (21°57'S / additional, very thin spiral cords; with a chink-like
MZSP PADCT
40'51'W), 28/viii/1979, [2]; 86791, sta umbilicus. Aperture rhomboid, with a columellar fold
6617 (21°51.6'S / 47°42'W, 327 m), off Rio de Janeiro somewhat projected. Outer lip thin and slightly
state [5]; -Sao Paulo state: MZSP 89799, REVIZEEsta crenulated.
MNRJ
6662 (24°00.95'S / 43 55.54'W, 135 m), [11];
10942, REVIZEE sta 6669 (24°7.42'S / 44°42.22'W, Oscilla aquilonia n.sp.
MZSP PADCT
/10414°m5)8,.9[88]';W, 79 m)8,67[9292],; MZSP 86s8ta006,57R1E(V2I4Z1E2E.74s'tSa (Figure 2G-L)
6666 (24 17.13'S / 44T2.15'W, 163 m), [1]; MZSP
86797, PADCT sta 6579 (24°42.302'S / 45T8.831'W, Type material: Holotype: MNRJ 10825, offPara state,
84 m), [1]; MZSP 86787, PADCT sta 6573 (24°42.608'S AMASSEDS sta 3228 (03C25.1'N, 49°56.4'W, 64 m),
/ 44°43.419'W, 155 m), [1]; MZSP 86794, PADCT sta 17/v/1990, RVCI coll. Paratypes: IBUFRJ 4169, type
6577 (25T5.76'S / 4504.62'W, 124m), [14]; MZSP locality, [1]; IBUFRJ 14895, type locality, [3]; MNHN,
86788, PADCT sta 6541 (26T5'S / 45°53'W, 130 m), type locality. [2]; MNRJ 10819, type locality, [3];
[5]; -Parana state: MZSP 86790, PADCT sta 6631 IBUFRJ 14897, off Para state, AMASSEDS sta 4134,
(25°46'S / 45°28.8'W, 164 m), [2]; -Santa Catarina RVCI coll., [1].
state: MZSP 86798, PADCT sta 6595 (26C23.55'S /
46664°139.4(92'6W°1,5'1S75/m),45[593];'WM,ZS1P308m6)8,01,[1P];ADMCNTHNst,a ATyMpAeSlSocEalDitSy:stoaff32P2a8ra(0s3t°at2e5,.1n'oNr,t4h9°B5r6az.i4l'iWa,n6c4oams)t. -
REVIZEE sta 6695 (2617.134'S / 46°41.788'W, 153
m), [3]; MZSP 86793, PADCT sta 6606 (27°48.07'S / Distribution: Only known from Para state, north Brazil.
47°24.04'W, 175 m), [1]; MZSP 86795, PADCT sta Etymology: From the Latinaquilonius: north. Referring
6635 (27°10.38'S / 47 27.54'W, 129 m), [2]. to the occurrence ofthis species on the northern coast
Type locality: off Sergipe state coast (11°23'21"S / of Brazil.
37:04'30"W, 99 m).
Diagnosis: Oscilla species with helicoid heterostrophic
Distribution: Only known from Brazil. Northeast coast: protoconch with strongly projected nucleus; conical
Rio Grande do Norte and Sergipe states; southeast and shell bearing wide spiral cords and grooves in
south coasts: Espirito Santo, Rio de Janeiro, Sao teleoconch whorls, and an additional, narrower spiral
Paulo, Parana and Santa Catarina states. cord above the suture, variably expressed.
Etymology: From the Latin notialis: southern. Refer- Description: Shell conic, holotype 1.14 mm in length.
ring to the main distribution area of this species, in Teleoconch with up to three whorls, with crenulated
southern latitudes off Brazil. outline. Suture deep. Protoconch heterostrophic heli-
coid, with about 1.5 whorls, well projected, smooth,
Diagnosis: Oscilla species with planispiral hetero-
forming an angle of about 90° to shell main axis,
strophic protoconch; strongly conical shell bearing
diameter about 200 um. Spiral sculpture formed by
wide spiral cords and grooves in teleoconch whorls,
and an additional, narrower spiral cord above the three cords: the widest cord just above the suture; a
second cord, of medium width in the middle of each
suture, variably expressed.
whorl; and a third, narrower cord, just above the
mm
Description: Shell conic, holotype 1.9 in length. suture, partially covered by the subsequent whorl,
Teleoconch with up to 5 whorls with crenulated almost inconspicuous in early whorls; between the
outline. Suture deep. Protoconch heterostrophic pla- cords, there are two wide spiral furrows with micro-
nispiral, with about 1.5 whorls, smooth, forming an scopic axial growth lines. Base slightly convex, with
angle of about 90 to shell main axis, diameter about microscopic axial ribs and with its adapical periphery
200 um. Spiral sculpture formed by three cords: the marked by a peripheral, smooth spiral cord that
widest cord just above the suture; a second cord of corresponds to the third spiral cord in the teleoconch
medium width in themiddle ofeach whorl; and a third, whorls; with a small chink-like umbilicus. Aperture
narrower cord just above the suture, partially covered rhomboid, with a columellar fold, medium projected.
by the subsequent whorl, almost inconspicuous in early Outer lip thin and slightly crenulated.
A. D. Pimenta et al., 2007 Page 177
Figure 3. A-C, Oscillasomersi(Verrill & Bush, 1900) (IBUFRJ 13667): A-B, whole shells (respective lengths: 1.5 mm; 1.6 mm);
C: protoconch; D-E, Pseudoscillababylonia (C. B. Adams, 1845) (IBUFRJ 8490): D, whole shell (length: 1.6 mm); E, protoconch.
Scale bars: 200 urn.
Oscilla somersi (Verrill & Bush, 1900) [17]; coll. Mol. UERJ 6256, Laje do Coronel
new combination (23°5.884'S / 44°24,410'W, 23 m), Ilha Grande Bay
[15].
(Figure 3A-C)
Distribution: USA: Texas (Ode 1993); Caribbean:
Odostomia (Evalea) somersi Verrill & Bush, 1900: 533, Bermuda (Verrill & Bush 1900); Bahamas (Redfern
pi. 65, fig. 7. 2001); Curacao, West Indies (Jong & Coomans 1988);
Miralda havanensis auct non (Pilsbry & Aguayo, 1933): Brazil: southeast coast (this study).
Saet al. (1984: 7, fig. 41).
Menestho somersi: Jong & Coomans (1988: 124, pi. 6, oRfemMaorknso:ptTyhgemgaenbuys AO.sciAlldaawmass(p1r8o6p1o)seadndasdsiuabggneonsuesd
fig. 652); Redfern (2001: 144, pi. 65, fig. 598A; pi. pi.
with elevate spiral cords, aperture subquadrate, with a
113, fig. 598B).
Boonea somersi: ? Ode (1993: 55, not illustrated). cinolutmheelaPryrfaomlid.deTlrlyaonsu(b1g8e8n6u)susSeydrnOoslcai.llaVaasnaAsaercttsieonn
Boonea someri (sic): Wise (2001: 74, not illustrated).
(1994) used Oscilla as a full genus, recording Oscilla
jocosa from Mediterranean. Schander et al. (1999)
Type locality: Bermuda. considered Oscilla as a genus in the subfamily
Chrysallidinae.
Material examined: Bahamas Islands: CR 3641, Thethree species herein included in this genus fitwell
26°39'N, 77 18'W, 0.3 m, 20/vii/1982 [5]; CR 10098, such diagnosis, with a conical shell, strong spiral cords
NE of Chub Rocks (26°44'N, 77°12'W, 23 m), and a distinctly visible columellar fold.
12.vii.1992 [1]; -West Indies: ZMA, Aruba, F. Verbene Other pyramidellid genera have a similar pattern of
coll. [28]; ZMA, Curacao, Jong coll. [2]; -Brazil: - strong spiral cords, such as Pseudoscilla, Cingulina and
Espirito Santo state: IBUFRJ 8689, off Piuma, [36]; - Menestho. Oscilla somersi (new combination here
RiodeJaneiro state: IBUFRJ 13667, Praiada Figueira, proposed), for example, has already being allocated
Angra dos Reis, C. Alvarenga coll. [14]; MNHN, Praia to the genus Menestho by Jong & Coomans (1988) and
da Figueira, Angra dos Reis, C. Alvarenga coll. [6]; Redfern (2001). However, Menestho is a genus
MNRJ 10820, Praia da Figueira, Angra dos Reis, C. originally described based on Turbo albulus Fabricius,
Alvarenga coll. [6]; coll. Mol. UERJ 5961, Ponta do 1780, a species from Greenland. Also, Oscilla somersi
Pinto, Enseada de Parati-Mirim (23°13.249'S / was included in Boonea by Ode (1993) and Wise (2001),
44°38.950'W, 5 m), Ilha Grande Bay, [12]; coll. Mol. a position with which we do not agree, since Boonea
UERJ 6213, Ponta Grande Timuiba (233.762'S / has three nodulose spiral cords in each whorl.
44°36.038'W, 9 m), Ilha Grande Bay, [22]; coll. Mol. The original figure of Oscilla somersi shows smooth
UERJ 6244, Ponta Escalvada, Ilha da Gipoia spiral cords. In the shells from Brazil and the West
(23°1.911'S / 44°22.734'W, 11 m), Ilha Grande Bay, Indies that we examined, we could find some variation
[35]; coll. Mol. UERJ 6234, Ilha Comprida, Baia de in the first two spiral cords, which range from almost
Ribeira (23°57.724'S/44°22'W, 9 m), Ilha Grande Bay completely smooth to sculptured with small nodules of
Page 178 The Veliger, Vol. 50, No. 3
varying strength. The shell illustrated by Redfern Speers (1972: 6, not illustrated); Clench & Turner
(2001) also bears somewhat nodulose spiral cords, but (1950: 259, not illustrated)
some variation in the spiral ridges also can be found Chemnitzia (Miralda) babylonia: Morch (1875: 165, not
(Redfern, personal communication). Ode (1993), al- illustrated).
though expressing doubts about his generic allocation, Odostomia (Cingulina) Babylonica: Tryon (1886: 358,
found variation in the spiral ridges too. According to not illustrated).
Johnson (1989), the shells in a lot labeled as syntypes Chemnitzia Babylonia: Bush (1899: 176, not illustrated).
(YPM 15710) do not correspond to this species. Odostomia (Cingulina) Babylonia: Verril & Bush (1900:
Oscilla notialis (Figure 2A-F) and Oscilla aquilonia 534, pi. LXV, fig. 11).
(Figure 2G-L) differ from the holotype of Oscilla Menestho babylonia: Ode & Speers (1972: 8, not
tornata Verrill, 1884 (new combination, herein pro- illustrated).
posed), from off Cape Hatteras, U.S.A. (Figure 2M), Odostomia (Miralda) judithae Newell-Usticke (1959:
in respect to the very narrow upper spiral cord and 86): synonymized by Jong & Coomans (1988).
wider spiral grooves between the cords. Furthermore, Cingulinababylonia: Warmke & Abbott (1962: 148, not
Verrill (1884) did not report an additional, narrower illustrated); Abbott (1974: 301, not illustrated); Rios
spiral cord above the suture, which is found in Oscilla (1985: 165, pi. 54, fig. 785, 1994: 188, pi. 62, fig. 876);
notialis (Figure 2A-B) and also in very similar speci- Vokes & Vokes (1983: 32, pi. 30, fig. 19); Jong &
mens from Abaco (Bahamas), named Oscilla sp. B by Coomans (1988: 120, pi. 19, fig. 637); Mello (1990:
Redfern (2001: pi. 65, fig. 600), which may prove to be 41, fig. 10).
this species too. This additional spiral cordisavariable Cingula babylonia: Oliveira (1992: 285, not illustrated).
character, being stronger in some shells and absent in Pseudoscilla babylonia: Ode (1993: 58, not illustrated).
others. In Oscilla aquilonia, an additional, suprasutural Odostomia babylonia: Wise (1996: 445, figs. 13a-e);
cord may also be present, to a variable degree Redfern (2001: 142, pi. 64, fig. 585).
(Figure 2G, E).
Oscillaaquiloniaisverysimilarto Oscillanotialis, but Type material: lost (Clench & Turner 1950)
has a helicoid protoconch (Figure 21 J), whereas
Menestho notialis has a planispiral one (Figure 2E-F). Type locality: Jamaica.
Furthermore, O. aqulinoniusdoes not have the two thin
spiral cords at the periphery of the last whorl and Material examined: Pernambuco statMe:NHMNN,HN, Cabo
a(bFaipgiucraell2yCadDj)a.cent to the suture, as seen in O. notialis ((pprraaiiaa ddeoGVaeirbau),Cru[1z]);, B[1a];hiMaNstHatNe:, MD55 sItatapDaCri7c3a
Oscillanotialis shows a wide range ofvariation, both (18°59'S / 3748'W, 607-620 m), Abrolhos Archipel
in shell size (up to five teleoconch whorls) and Continental slope, Bouchet, Leal, Metivier coll. [2], -
odsOmrsracanlitallemelera,endtagqaewutsiii,ltoohnnaian(a,dslpmioorunasmltbtichloenirocduostshvseaworriimdaehettairinomdne,insiinswsiocttmohhneessisusahtbeebqlnoultsval)e-y. E[s13ts9]ap;7ti9eMr,:iNtNIoRBOJSUAaFnC1Rt0Jo8c2ol1s6lt,9.a7,to5ef:[,1f];IGPBiIEuUBOmFUaRMFJRA19JR984379X00[7I1,]1I;,o-sfCRtfaaiPob1io1du1em,FarJ2ia9on1/e9vVi9iIr3nIo,V
ncohtairaalcits,erst.heInprosptiotceonocfh tihse avlawraiyastiopnlanfiosupnirdalin(FiMg.- NstOa A61S94col(l2.4,°[10]3;,6I'BUSF/RN0J4O47A°8C3067,,6G' EW,OM13A4Rm)X,IIiiis/t1a98936,
ure 2E-F). (22°05'S / 40T7,4'W), coll., [1].
This is the first record of Oscilla somersi from the Distribution: USA: Florida (Wise 1996), Texas (Ode
southwestern Atlantic, where it has been collected off 1993); Caribbean: West Indies (Jong & Coomans
the southeast Brazilian coast (about 23°S). Oscilla 1988), Bermuda (Verril & Bush 1900), Bahamas
notialis has a wide range ofdistribution in Brazil, from (Redfern 2001); Brazil: Pernambuco state (Mello
the northeast (about 4°S) to the southeast coast (about 1990; this study), Bahia (Oliveira 1992), Espirito Santo
20°S). Oscilla aquilonia, on the other hand, was found state (this study), Rio de Janeiro state (Rios 1994; this
only in northern localities (about 03°N). study).
Genus Pseudoscilla Boettger, 1901 Remarks: Pseudoscilla babylonia (Figure 3D-E) has
Pseudoscilla Boettger, 1901. Type species: Oscilla been reported from Brazil and other regions in the
{Pseudoscilla) miocaenica Boettger, 1901. western Atlantic as Cingulina babylonia (Warmke &
Abbott 1962; Rios 1985, 1994; Abbott 1974; Vokes &
Pseudoscilla babylonia (C. B. Adams, 1845) Vokes 1983; Jong & Coomans 1988; Mello 1990) or
(Figure 3D-E) Odostomia babylonia (Wise 1996; Redfern 2001). Ode
(1993) stated that the genus Cingulina is normally and
Chemnitzia babylonia C. B. Adams, 1845: 6: Ode & wrongly used forspecies from the western Atlantic, and
A. D. Pimenta et al., 2007 Page 179
Figure 4. A-D. Triptychus niveus Morch, 1875 (IBUFRJ 14080): A, whole shell (length: 2.7 mm); B-C. protoconchs; D. last
whorl; E-I. Triptychus litosbathron n.sp.: E, holotype (MZSP 77065); F-G, paratype (MZSP 77066); HI, paratype (IBUFRJ
12878); E-F, whole shells (respective lengths: 2.4 mm; 1.6 mm); G-H, protoconchs; I, last whorl. Scale bars: 200 urn.
introduced the combination Pseudoscilla babylonia, Subfamily Pyramidellinae Gray, 1840
establishing that Pseudoscilla is not related to Cingu-
lina. According to Ode (1993), Pseudoscilla is charac- Genus Triptychus Morch, 1875
terized by small, regularly conical shells, with sculpture Triptychus Morch, 1875: 158. Type species: Triptychus
consisting of strongly developed spiral cords, some- niveus Morch, 1875, by monotypy, St. Thomas.
times dissolved into separate knobs; Cingulina, on the
other hand has more elongate shells, less strongly Triptychus niveus Morch, 1875
ornamented, and is restricted to the Pacific Ocean (Ode (Figure 4A-D)
1993).
Aartsen et al. (1998) reported Pseudoscilla babylonia Obeliscus (Triptychus) niveus Morch (1875: 159).
from the North Atlantic Ocean. However, Penas & Triptychus niveus: Abbott (1974: 300, fig. 3653);
Rolan (1999) reviewed the genus Pseudoscilla from Warmke & Abbott (1962: 147, pi. 28e); Vokes &
West Africa, providing illustrations ofthe type-species Vokes (1983: 32, pi. 30, fig. 17); Jong & Coomans
{Pseudoscilla miocaenica), and concluded that the (1988: 120, pi. 19, fig. 636); Diaz & Puyana (1994:
records of P. babylonia by Aartsen et al. (1998) were 236, pi. LXIX, fig. 941); Redfern (2001: 145, pi. 65,
based on misidentifications of Pseudoscilla bilirata fig. 603).
(Folin, 1870). According to Penas & Rolan (1999), Triptychus niveus: Rehder (1943: 195, not illustrated)
Pseudoscilla babylonia is restricted to the Western Pyramidella vincta Dall, 1884: Synonimyzed by Abbott
Atlantic. (1974).
Page 180 The Veliger, Vol. 50, No. 3
Type locality: St. Thomas, Vieques, St. Martin. Description: Shell conic, holotype 2.4 mm in length.
Teleconch with up to 5.5 whorls with sinuous outline,
Material examined: West Indies: IBUFRJ 14080, off
due to projections of whorl ornamentation. Suture
BBBooonnnaaaiiirrreee (((14102mm)m),),,31034..01i..i1L.911999899,88,,[1];[[12]-];;BraIIzBiBlUU:FF-RRRJJio11d44e0088J43a,,neioorffoff dsoecmeoopno.cthhPwrwhohootrrollc,so,nfcowhrimtihhnegntueacrlnoesutasrnogpilhemimcoefrswaiebtdohuitnab1f8ior0us°tt wtei1lt.eh5-
vst.a1t9e8:3I,BAUGFRcoJll.1,40[17]8;,IABrUqFuiRpJel1a4g0o79d,eBSaacnitaandae,CMaamcpaoes, tdeeleepocoanncdh wmiadien, acxhisa;nndeilaemdetsepriraalboufturr2o5w0s,itmb.eaTriwnog
sta 22, [1]. microscopic axial growth lines, one just above the
Distribution: USA: Florida to West Indies (Abbott suture, the other in the midline of each teleoconch
1974; Warmke & Abbott 1962); Mexico: Yucatan whorl; between the two furrows, thereis a strong, wide,
Peninsula (Vokes & Vokes 1983); Caribbean: St. smooth spiral cord; another, stronger spiral cord, just
Thomas (Morch 1875), Bahamas (Redfern 2001), West below the suture, is formed by a spiral row ofabout 18
Indies (Rehder 1943; Jong & Coomans 1988), Colom- rounded nodules, axially elongated. Base slightly
bia (Diaz & Puyana 1994); Brazil: Rio de Janeiro (this concave, with microscopic axial ribs and with its
study). adapical periphery marked by a peripheral smooth
spiral cord; with a very small chink-like umbilicus,
Triptychus litosbathron n.sp.
sometimes partially covered. Aperture rhomboid, with
(Figure 4E-I) a columellar fold medium to weakly projected. Outer
lip thin and nearly straight.
Type material: Holotype MZSP 77065, off Parana Remarks: Triptychus niveus has a wide geographic
PADCT
state, 6577 (2515.76'S / 45°04.62'W, 124 m). range in the western Atlantic, including localities in the
Paratypes: -Espirito Santo state: IBUFRJ 14081, off U.S.A. and Caribbean (see distribution for references)
oE331fs442fp8°°i755rE844is,''tpoWWiro,,ifStf44oa55nEtSsmmpoa))i,n,rtis2o2tt77ao..tsieitii,S.a.t1a1e99nR,99t66EoR,,VENINsVtZOaOItEAeAZ,ENENERsccEtooslaVlltl.aI.,vZNvv[[1E1v2]O];24;EA4IMN(Bs(N2t2U0aH0°F°NSDRS,lJ// hDas()aaon,bnudotdwuh,ththcieesor2arre3see°tsciSstto)rr;iohdcafstsTeBordrbfiaetpzteotihnylilcso(chcouapalslbaliopteueilcteirtste2ofdos0rnb°ooa-ntmt2hh5rteB°ohrnesa,Szo)siu.oltouhnt(ehFaeitsaghtsueetrrenoct4oahaAnes-drt
4-4([R6[Ns[P81111t26P6360]]]EAaO0;;;6°9a65V°944D6r5AM4311Ia.DCM8M,,.NNn(lZ'57TZZa2StR4PE84SyS'8°cEJ/As6p(WoP'1tP45el2Da,7Wl17st0.1.,tlCe3°°,10ao:804836cT116(8'96a96M3[562'Sl6'416358i4],S9Zs,37;t8°mt43y7mS,4a),o,4")2/-f,P4W,(.6Sf[2,T656Ra4R]4[7E0241[;1oEs768E51].4];p09'V-1;V00i6SSPI5(M.9rI6maa2i7''/Z,)MZnZ6ut53W,4EtoZl'SE3t,4a1SoE2y"SPES453pWC'a/P.3e1,sSian8.646tit6t6l3a44.6/a6oot6811656ce9rm699499a:205i)9s65l5',.t6n,9im°a,Wa8t1M)t5(Py,,2e,([,2Z3s,1'A24t]'S61Wa;[°RRDW1t52,0P],e35EE1C;0M:.7.VVi1TmM.N91Mi83)II153.6N7H,3Zc'160ZZ64o9SRN6mS8l'EE[9ml0)16S6J,P.EE])6.,,,,;/ wtpbpotnoBIs))rhhahornna.eeesdooeiTmrseenurtheIeeaallnonetn(cdoochtFahasidgoai(irpseeuodnnFetgindlcncgiueceilohgerlaaortutsuenelbniashaerouaoleie4necspnos1dsoi,fn)4mpsiinc,ssriAsoacmohTsri,llohsatfoamaptoloitwcTelhmDlthshkr,iaa)prehoiitirn;ernwop(redlgstFashaab,yclihaadattucgdoattthhlshuuwpchheepuroleidoretsetmcvoorsusaanpeuedrlw4mbilberswihEroaht,,toha-pofaosrlawioFusstplitctlbn,ichshta.arao,ilahtnsrolTeIhmwd)otrnah;ohasponweccerlinaeoohipmtcern(s(rotihshdFseFestpeisiTrhitnelig.egrnlaolamunaudnesvmrhltrnuodemieeaeislccoisrvoooo4n4oetsnsnnrtuAtEweoecldhTs-ho-d,thys,e
(27°48.07'S / 47 24.04'W, 175 m), [1]. nsieveemuss (tFoigbueret4heD).beIstn sgpeinteeroifcaalllltohceasteiodnifffeorrentchese,ntheiws
Type locality: 25 15.76'S / 45 04.62'W, 124 m; off species herein described, considering also, that it is not
Parana state, Brazil. desirable to introduce a new generic name in the
already confused Pyramidellidae.
Distribution: Only known from Brazil southeast-south Diaz & Puyana (1994: pi. LXIX, fig. 936) illustrated
coast: Espirito Santo state, Sao Paulo state, Parana a shell named Odostomia (Miralda) sp. The shell is very
state.
similar to Triptychus litosbathron, but has an additional
Etymology: From the Greek litos: plain, simple; spiral cord on the base.
-bathron: base, pedestal. In allusion to the simple,
Genus Peristichia Dall, 1889
unornamented base ofthis species.
Peristichia Dall, 1889: 339. Type species: Peristichia
Diagnosis: Small Triptychus species with smooth base, toreta Dall, 1889, Florida Keys (USA), by original
immersed protoconch and small chink-like umbilicus. designation.