Catalogue of genera of the terrestrial Isopoda

Polyacanthus Budde-Lund, 1909
Family: Armadillidae.
Type species: Armadillo aculeatus Budde-Lund,
1885 (m).
Locality: Angola, Cabinda, Chinchoxo (1 syntype,
ZMB 6662).
Species: 2.
Distribution: Cabinda, Transvaal.
Remarks: Budde-Lund (1904) divided the genus
Armadillo into 7 groups. Budde-Lund (1909)
considered them as subgenera; the “Sektio
IV” received the name Polyacanthus.
Polyplatus Budde-Lund, 1908b
Subgenus of Porcellio Latreille, 1804.
Type species: Porcellio latissimus Budde-Lund, 1885 (o).
Locality: Sardinia (leg. Keitel); (3 �, 5 � syntypes, BMNH
1921:10:18:4988–4992).
Polytretus Vandel, 1946
Unavailable name (ICZN Art. 13.3).
Polytretus Vandel, 1962
Subgenus of Porcellionides Miers, 1878.
Type species: Metoponorthus sexfasciatus Budde-Lund,
1885 (designated by Vandel 1962).
Locality: Algeria, Algiers (5 � syntypes, leg. E. Simon,
BMNH 1921:10:18:4735). Budde-Lund (1885) also
mentioned localities in Spain and France, and Mallorca
and Madeira, but this material could not be traced. It is
prob-ably lost.
Remarks: Polytretus was described as subgenus of Metoponorthus
Budde-Lund, 1885, which is a synonym of
Porcellionides Miers, 1878. Vandel (1946) included
3 species, without designating a type species. Vandel
(1962) mentioned M. sexfasciatus sensu Budde-Lund,
1885 (not C. L. Koch, 1847) as type species, and thus
made the name available. According to Vandel, Porcellio
sexfaciatus C. L. Koch, 1847 is identical to Orthometopon
phaleronensis (Verhoeff, 1901). If this is true,
then according to the ICZN, the name “Metoponorthus
sexfasciatus Budde-Lund” should be discarded rather
than the name Porcellio sexfasciatus C. L. Koch.
Schmalfuss (1993) discussed the problem and seemed
to consider Porcellio sexfasciatus C. L. Koch, 1847 as
a nomen dubium.
Pondo Barnard, 1937
Family: Platyarthridae.
Type species: Porcellio (Pondo) poweri Barnard,
1937 (m).
Locality: South Africa, Port St. Johns, Pondoland
(1 �, 1 �, 2 juv., leg. Power, i.1934, NMP or
SAMC).
Remarks: Described as subgenus of Porcellio
Latreille, 1804. Ferrara & Taiti (1989b) re-
GENERA OF ONISCIDEA
73
ferred to Pondo as a genus probably of Platyarthridae.
Porcellidium Verhoeff, 1907b
Synonym of Porcellium Dahl, 1916.
Type species: Porcellio conspersus C. L. Koch, 1841b.
Locality: Germany, Hohengebraching [48°58’N, 12°05’E].
Remarks: Preoccupied by Porcellidium Claus, 1866 (Copepoda:
Harpacticoidea), Dahl (1916) introduced Porcellium
as a replacement name.
Porcellio Latreille, 1804
Family: Porcellonidae.
Type species: Porcellio scaber Latreille, 1804
(designated by Gruner 1966).
Locality: Not given in the original description.
Species: Ca. 300 nominal species.
Distribution: Mediterranean area, some species
worldwide .
Remarks: Latreille (1804) included 3 species, P.
scaber, P. laevis Latreille, 1804 and Oniscus
crenulatus Pallas, 1771; the latter now is
in Hemilepistus. The mention of Porcellio
scaber as type species of Porcellio by Gruner
(1966) is regarded as designation of the type
species, according to ICZN Art. 69.1.1. A
great number of the nominal species will have
to be transferred to other genera or become
nomina dubia.
Porcellionides Miers, 1878
Family: Porcellionidae.
Type species: Porcellio (Porcellionides) jelskii
Miers, 1878 (designated by Schmalfuss &
Ferrara 1978) (synonym of Porcellio pruinosus
Brandt, 1833).
Localities: Guyana, Maraynioe (1 � and 2 � with
marsupium, syntypes, BMNH 1879:21); Peru,
Pumamarca (3 �, 3 �, syntypes, BMNH
1879:21); Caracas, Guiana [?] (9 �, 10 �,
BMNH 1887:20).
Syn: Metoponorthus Budde-Lund, 1879.
Species: 93 nominal species.
Distribution: Worldwide in warm temperate or
subtropical regions.
Remarks: According to Stebbing (1900), in Scudder’s
Nomenclator Zoologicus (1882) the
name Porcellionides is mentioned twice: Porcellionides
Milne-Edwards, 1840 and Porcellionides
Miers, 1877 (1978). The name Porcellionides
Milne-Edwards, 1840 was not