Marycarmenia lysandrae, a new genus and interstitial species (Polychaeta: Dorvilleidae) from Madeira

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13ULLETI OF _"IARINE SCIE CEo62(11: 115-119. 1998
MARYCARMENIA LYSANDRAE, A NEW GENUS AND
INTERSTITIAL SPECIES (POLYCHAETA: DORVILLEIDAE)
FROM MADEIRA
Jorge N~{fiez
ABSTRACT
M",ycar/llenia new genus. i erected for Prnlodorvillea ga,I'fJ<!(!nsis Pettibone, 1961, being
removed from the genII.' Pr()/ot!oJ"illea PCllibonc, 1961. The new species M. lysal1c/rae re-
sembles P. gaspeensi.\· in the fOfm of the body. prostomial appendages, uniramous parapodia
witholll notoacicula and 10rs,11cirri, kinds of neurosetae and jaw apparatus. witholllmaxillary
can-iers and basal plates, and with two main rows of free maxillary delllicles. The genus
Mar)'carmenia i relmed to Meioc/nrl'illea Jumars, 1974, and present. Ilumerous convergelll
characters with Pelliboneia Orensanz, 1973.
The number of genera described in the family Dorvilledae has increased notably
in reCent: from 20 (Hilbig and Blake, 1991) to 33 (Eibye-Jacobsen and Kri tensen,
1994). Hilbig and Blake (199]) propo ed ix principal groups covering 20 genera;
the new genus Marycarmenia is related to group 5, including Meiodorvillea Ju-
mar, 1974 and Gymn.odorvillea Wainwright and Perkins 1982, being the two
genera most closely related with Marycarmenia, all of which have un.i.ramous
parapodia without notoaciculae and furcate setae and the jaw apparatus lacking
maxillary carriers and ba al plates. Marycannenia differs principa.lly from Meio-
dorvillea in the bia.rticulated palps and from Gymn.odorvillea in having antennae
and palps.
Matycarmenia lysandrae new pecies i an interstitial species that inhabits shal-
low subtidal andy sed.i.ments. This species, together with 33 additional taxa of
polychaetes, were collected from Ponta de S. Lourenyo in northwest Madeira
(Nunez, et aI., 1995). M. lysandrae was origina\Jy, with doubt, attributed to genus
Meiodorvillea?
MATERIALS A D METHODS
The material was collected by llllaided diving on a stony bottom wilh small interfaces of organo-
genous coarse-grained sand. al a depth or 4 m Small sample of sand, wiLh n volume of about 100cc,
were treated with MgCI2• the interstitial fauna were soned using a dissecting microscope, fixed with
10% formaldehyde in seawalcr for I d. and stored in 700/, alcohol. Due LO lhe small size of the
specimcns they were mounted in glycerine gel and examined wilh a compound microscope. Mea-
surements of lhe body width were taken. exciliding the parapodia and setae, at the anterior pan of tlle
body at the level or the first seliger, Two specimens were c1earcd ill 10% KOH for 30 min for the
examinarioll of the jaws. Thc figures were made using all imerference cOlllrast microscope (Nomarski)
with a camera lucida.
Fam.i.ly DORVILLEIDAE Chamberlin, 1919
Marycarmellia new genu
Type species.-PrOludorvilleo gaspeellsis Petlibone, 1961.= MCII:l'c 1J'lIIellicl ga.l'peensis (Pettibone,
1961) n. comb. Gender: Feminine.
Diagnosis.-Body minute and lender with up to 30 etigers. Numerous ciliary
tufts on prostOmiuD, palp and egrnents. Prostomium pear-shaped, with two short
and smooth dorsal antennae and two biarticulate ventrlateral palps. Parapodia
uniramous (without notoacicula), dorsal cirri absent ventral cirri not extending
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beyond neuropodia! lobe. Branchiae absent. Supra-acicular fascicle with serrate
capillary and furcate setae, subacicular fascicle wi h heterogomph falcigers and
occasionally inferior simple cultriform setae. Mandibles elongated and denticled
anteriorly two principal rows of maxillary structures, and two principal rows f
fre dentides. Maxillary carriers absent. Pygidium with four anal cirri.
EtYlI'lology.-Malycarmenia is dedicated to the polycbaetologist Marfa del Car-
men Brito.
Remarks.-The removal of P. gaspeensis from the genus Protodorvil/ea P tti-
bon ,1961 was already suggested by Wainwright and Perkins 1982) and Eibye-
Jacobsen and Kristen en (1994). In view of the tudy of the jaw apparatus by
Jumars (1974), P. gaspeen.sis is related to the "line" Meiodorvil/ea-Protodorvillea
in which Malycarmenia is included.
Marycarmell;a lysandrae new species
Figures 1,2)
M/!wr!ol'l'ille,,? uncz:.et al. 1995.Ii Ionly)
7:\'pe locality and ecnl().~ica/ da/(l.-Madcira. Laginha (POllia de $. Louren«o): TM 28S CB 39801
~-I-:!2.September 1992. -4 IIIin orgal1ogcnOlls coarse-gr,lined sand ( 011:J. Nllnez).
Moll'/'io/ Exolllilled.-$cw.11 'pecimcns and an incomplete specimen, of which two individuals had
bcen trcated with 10% pOlash and the rell1aining six included in glycerine gel.
7)'/,<,Mmer;nl.-I-I lotype a 1110ul1ledspecimen CAN/O198). deposited in the Musco Insular de ieneias
~llirnles of Santa Cruz IeTellcrife (TFM ): tl1ree Panllypes: a 1110umcd pecimcl1 (S11M). deposited
ill ll1c Departamcl1lo de Biologia Animal. niversidlld de La Laguna (DBAUL): Paratype dep sited
in the pdvllte collection of Brigiue Hilbig,
Etym.ology.-The specific name is dedicated to Lisandra daughter of the author.
Description.-Holotype with 22 setigers, 2.52 mm in length for 0.18 rnm in width
anteriorly (excluding parapodia); other specimens with 6-13 setiger , 0.52-1.24
mm in length for 0.14-0.22 mm in width. Body elongated slender and sub-
cylindrical, tapering gradually po eriorly (Fig. lA). Unpigmented and translucent.
Prostomium rounded anteriorly, wider than long, with small d rsolateral clavate
antennae; palps biarticulate, lightly longer than antennae, inserted ventrolaterally
behind antennae wi h long palpo tyle and short palpophore; yes not visible.
Single pair of nuchal organs on the dorsoposterior corners of pro'tomium (Fig.
lB. Two achaetou peri tomia] rings, second ring twice the size of first ring.
Peristomium contains the jaw apparatus. Additional ciliated area present on pro-
stomium palps, laterally on each peristomial ring and setigerous segments. Par-
apodia uniramous, uniform in shape, Presetal and postsetal lobes imilar, witb
CitTiform ventral cirri (Fig. 2A), Dorsal cirri absent. Single neuroaciculum stout
wilh tapering protruding tip. Generally 5 setae f each parapodium, 2 supraaci-
I'
cular and 3 subacicular. Supraacicular setae of two types: Ion", capillary imple,
straight or arched, and serra ed subdistally (Fig. 2C), and 1-2 ps udocompound
furcate 'etae, with tines unequal in length and numerous spines bel w hort tine
(Fig. 2D). Subacicular setae with 3 unidentate h terogomph compound serrated
falcigers, with dorsal-ventral gradation, 50-22-16 (J.manterior setigers, 71-38-17
(J.m midbody 83-39-14 fJ.m post ri r setig r' ( ig. 2E-G), shaft with distally
seITated and bifid tine (Fig. 2H). Far posterior, etiger with an inferior simple
cultriform serrated eta with unidentate tip (Fig. 21). Pygidium with two pairs of
anal cirri: dorsal pair short and cilTiform, ventral pair, long and clavate (Fig. IC).
Jaw apparatus poorly sclerotized. Symmetrical and elongate mandibles curved
and scalloped along inner edge witb 3-4 rounded eeth. Each mandible concave
NUNEZ: EWIOLYCHAETC 117
(
Figure I. Mwyca rill ellill fys(/lid/"{/e. h I type.-A. Dorsal view: S, Anterior end. dorsal view: C.
P sterior end, dorsaJ view. Scale line is 400 J.l.J11 for A. and 50 jJ.J11 for B.C.
l18 BULLETIN OF MARINE SCIENCE. VOL. 62. N . I. 1998
I
I
!
I
1
i
I
\ I I
i
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F G
H J
E
0
C
Figure 2. Mm)'carmenia lysQlldme.-A, Anterior parapodium: B, Maxillae and free denticle; C.
Capillary sela; 0, Pscudocompound furcate seta: E. Uppermost compound falciger; F,Median com-
pound f,llciger; G. Lowermost compound falciger; lor, Shaft of compound seta; I, Cultriform seta of
posterior setigers; J. Mandibles. Scale line is 242 1.L111 1'0"A. and 25 J-l-m for B-J.
NO-EZ: NEW POLYCI-IAETE 119
medially along outer edge; posterior handle divergent and narrow (Fig. 2J). Max-
illar structure in V-shape with 2 rows of free denticIes, with about 7 squared,
flattened fused denticIes, each denticle sclerotized with serrated margin. At least
2 additional rows of transparent, poorly sclerotized, rounded scraper-like denticles,
each with numerous surficial minute teeth, and some, one large tooth in cutting
margin (Fig. 2B).
Remarks.-Marycarmenia lysandrae resembles Pettiboneia urciensis (Campoy
and San Martin, 1980) in having similar pro tomia, setae and jaws elements,
although it differs in having uniramou parapodia on all setigers, this apomorpruc
character far off at M. lysanclrae of group Pettiboneia. M. lysanclrae and M.
gaspeensis (Pettibone, 1961) (Pettibone 1961; Jumars 1974) are sister species,
differing principally .in the shape of the prostom.ium and the p eudocompound
setae present in M. lysandrae.
Distribution.-Only known fr m type locality.
ACKNOWLEDGMENTS
The author is particularly gnHeful to B. HiIbig Science Applicalions Imemational Corporation.
Massachusetts) and D. Eibye-Jacobsen (Zoological Museum, Univer ity of Copenhagen) for valuable
discus ions on matters to this paper. A. Arino (Universidad de NaValTa) helped with for a 103nof the
types Pellibol1eia urciellsi.v. I am also grateful to J. D. Delgado (Universidad de La Laguna) for
a'sisting me in the prepanHion of the figures.
LITERATURE CITED
Campoy, A. and G. San Marlin. 1980. Pellibolleio II/'ciellsis sp. n.: un nouveau Dorvilleidae (Poly-
chetes: Erranres) de la MeditelTancc. Cah. BioI. Mar. 21: 201-207.
Eibye-Jacobsen, D. and R. M. Kristensen. 1994. A new genus and pecies of Dorvilleidae (Annelida.
Polychaeca) from Bermuda, with a phylogcnctic analysis of Dorvilieidae, Iphilimidae llnd Dino-
philidae. Zoo1. Scrip. 23: 107-131.
Hilbig, B. and J. A. Blake. 1991. Dorvilleidae (Annelida: Polychaeta) from the U.. Atlantic slope
and rise. Description of two new genera and 14 new pecie:, with a generic revision of Op/IIY-
olroc!w. Zool. crip.20: 147-183.
Jumars, P. 1974. A generic revision of the Dorvilieidae (Polychaera), with ix new species from the
deep onh Pacific. Zoo1. J. Linn. Soc. 54: 101-135.
Nunez, J., M. Pascual, J. D. Delgado and G. San Martin. 1995. InterSlitial polychaetes frolll Madeira.
Wilh a description of Syllides ballsei Perk.ins. 1981. Bocagiana 179: 1-7.
Orensanz, J. M. 1973. Los Anelidos PoliqueLOs de la provincia biogeogr;.lfica de Argentina. lIT. Dor-
villeidae. Physis. Sec. A, 32: 325-342.
Pettibone, M. J961. New species of polychaele worms from the Atlantic Ocean, with a revision of
the Dorvil1eidae. Proc. BioI. Soc. Washington 74: 167-186.
Wainwrighl, S. C. and T H. Perkins. 1982. GYlIIllodor\liliea j/oridallo. a new genus and species of
Dorvilleidae (Polychacta) from Southeastern Florida. Proc. BioI. Soc. Wash. 95: 694-70 I.
DATEACCEPTI;D:February 26. 1996.
ADDRESS:Departamel1la de Bialogla Allimal (Zn%gla). Ulliliersidad de La Lagww, 38206 La Lag1./11a,
Tellenj'e, Canary Islands. Spain.