Page 3 - BALSAMO_etalii_1996

MARINE GASTROTRICHA FROM SICILY
TAXONOMIC ACCOUNT
The sediments of 19 o f the 21 localities sanlpled
yielded 41 species, 25 iMacrodas)~ida belonging to 11
genera and 16 Chaetonotida of 6 genera (Tables 1, 11).
Four species of Tetrancbyroderma are reported for the
second time in Italy and one chetonotid species,
described for the Somalian coast by Valbonesi &
Luporini (1987) as Chaetonotus sp. 3, is redescribed and
named Chaetorzotus lzrporinii. One species of Tctrart-
cbj~rodermacould be ideiltified only at the genus level
due to the limited number of specimens found.
Order Macrodasyida Rao & Clausen, l970
Family DACTYLOPODOLIDAE Strand, I929
Genus Dactylopodola Strand, I927
Dactylopodola typhle (Remane, 1927)
Trappeto, 2-3 m: lsola Favignana, littoral. 1-2 m; ivlanfria, 2-3 m;
Piinta Braccetto 1-2 m; S. Ambrogio, 2-3 m.
This quite variable species is probably composed of
two closely related but different species (Hummon, pers.
comm.). The specimens found were certainly identifiable
with D. typble (nomina1 form), which has pre.iliously
been found along the coasts of Liguria, Tuscany and in
the Tuscan archipelago (islands of Capraia and Elba),
Latium and the island of Ponza, Campania and at the
island of Procida, in Apulia and in Friuli.
Family LEPIDODASYIDAE Remane, 1927
Genus ~blesodasj~Rsemane, I95 1
Mesodasys adenotubulatus Hummon, Todaro &
Tongiorgi, I773
Trappeto, 2-3 m; Agrigento 1 m: Punta Braccetto, 1-2 in;
Pozzallo, 1-2 ni; Spiaggia Salinelle, 2-3 ni; Giardini Naxos. 2-3 m; S.
Anibrogio. 2-3 m.
M e s o d a s ) ) ~udenotubtclatus is k n o w n f r o m the
T ~ r r h e n i a ncoasts 0f T u s c a n ~ ,L a t i u m ,Campaniav t h e
island of Ischia, the Adriatic coast of the Marches and
from Sardinia.
FamiIy MACRODASYIDAE Remane, 1926
Genus ~kfacrodasysRemane, 1924
iMacrodasys caudatus Remane. 1927
S. Vita lo Capo. 1-2 m; lsola Favignana; 1-2 m; Giardini Naxos,
littoral; S. Ambrogio, 2-3 m.
175
This cosmopolite species has been found in many
localities along the peniilsular coasts, at the islands of
Elba, Giglio and Capraia in the Tuscan archipelago, and in
Sardinia.
Family THAUMASTODERMATIDAE Remane, 1926
Genus Acantbodas)~R~emane, 1927
Acanthodasys nculeatus Remane, 1927
Lido Signorino. 2-3 ni; Pozz:~llo, 1-2 m; Rada di Portopalo, 2-3
m; S. Anibrogio. 2-3 m.
Some specimens had a body length slightly shorter
than that typical o f this species, 450-625 vs 800 pm.
Acatzthodcts.ys acttleutus is comnion along the peninsular
coasts, in the Tuscan archipelago, and in Sardinia.
Genus Dipfodasys Remane, 1927
Diplodasys ankeli Wilke, 1954
Giardini Naxos, littoral
The Italia11 distribution of this species includes
Tuscany, the Tuscan archipelago, Latium and the island
of Ponza, the Gulf of Naples, the Ionian coasts of Calabria
and Apulia, and Sardinia.
Genus Psetrdostomefia Swedmark, 1956
Pseudostomella etrusca Humrnon, Todaro &
Tongiorgi, 1993*
Giardini Nasos. littoral; S. Ambrogio, 2-3 in: Spiaggia Salinelle,
2-3 m.
This species has been recorded in Liguria and
Tuscany, in the Tuscan archipelago (Elba and Giglio),
Latium, Campania, along the Tyrrhenian coast of Calabria
and in Sardinia.
* - According to the lnternational Code of Zoological Nomenclatiire
the authorship o f this species shoiild be to ([Todaro, Tongiorgi &
Balsamo, 1992. because they were the first to apply the namc t o thc
figure and descriptioii of Pse~rdoslornelbsp. by Luporini e1 a l . , 197.3
(cfr. Todaro e! a l . , 1992, p. 476), while thc first precisc description is
by Hummon e1 al. (1993, p. 116). who declared P elrrrsca a new-~ ~
species. The scrape originited from an editorial niiscarriage of the
Bollettino di Zoologia. The print of the paper bv Hummon et alii.
which had been s=heduled-to have t h e k c e d é n c e ovcr that h!;
Todaro et alii was arbitrarily posporied and the two papers printed
.in two subsequent issues lissue 4. vol. 59 (1992,) and issue I . vol. h0
(1993)] in a revcrted sequence. h.1. Balsamo, hl. ~ - ~ - ~-v --.-v
and P.
A. Todaro
Tongiorgi apologize with W. D. Hunimon for this involiinrdrv o- ve--r-
2
sigh; aid ;ccm that the authorship of Pserrdoslomella etrusca
should reniain to ~~HunimoTno, daro & Tongiorgi, 1 9 9 3 ~as in fact i[
has bccn done in al1 the following papers (cfr. Balsanio & Tongiorgi,
1995; Balsamo e! a l . , 1995).