Revision of Austrosignum Hodgson and Munnogonium George & Strömberg (Paramunnidae) with descriptions of eight new genera and two new species, (Crustacea: Isopoda: Asellota)
Author
Just, Jean
Author
Wilson, George D. F.
text
Zootaxa
2007
1515
1
29
journal article
10.5281/zenodo.177291
f56cdaa1-a402-4512-af2f-04da945e3b75
1175-5326
177291
Munnogonium
George & Strömberg
Munnogonium
George & Strömberg, 1968
: 15
.
Type
species.
Munnogonium waldronense
George & Strömberg, 1968
. — Original designation.
Species included.
Munnogonium erratum
(
Schultz, 1964
)
,
M
.
falklandicum
(
Nordenstam, 1933
)
,
comb. nov.
,
M
.
globifrons
(
Menzies, 1962
)
,
M. tillerae
(
Menzies & Barnard, 1959
)
,
M
.
waldronense
George & Strömberg, 1968
.
Diagnosis
.
Body
ovate.
Head
front margin not projecting.
Pereonites
dorsally smooth.
Pleotelson
lateral margins smooth.
Eyestalks
vestigial, not longer than wide, downward pointed.
Antennula
article 1 at least twice length of eyestalk.
Mandible palp
absent.
Pereopod I
carpus triangular, with 3 straight, subequal robust setae on posterior margin; propodus with simple setae only on posterior margin.
Pereopod II
carpus and propodus posterior margin with several long, very slender robust setae on posterior margin.
Uropod
endopod straight, apex truncate.
Remarks
. The
type
material of
Munnogonium waldronense
was not examined and we have not had access to topotypic material. We have, however, examined the
type
material of
M. globifrons
and
Austrosignum falklandicum
(here transferred to
Munnogonium
), and topotypic material of
M. tillerae
. The diagnosis of
Munnogonium
presented above is based on George & Strömberg’s (1968) description and illustrations. The diagnosis fits the other species here referred to
Munnogonium
.
We do not follow
Bowman & Schultz (1974)
in synonymising
Munnogonium waldronense
under the name
M. tillerae
. George & Strömberg’s description and illustrations of
M. waldronense
from the San Juan Archipelago, Washington, (1968, figs 1–2) differ from the
holotype
of
M. tillerae
from southern California illustrated by
Menzies & Barnard (1959, fig 1)
and
paratypes
illustrated by
Bowman & Schultz (1974: figs 21–31)
in the shape of the front margin of the head (straight to slightly concave in
M. waldronense
, broadly convex in
M. tillerae
) and in
M. waldronense
having an elongate proximal neck on the male pleotelson, which is not found in
M. tillerae
.
We have confirmed this on topotypic material of
M. tillerae
.