Some New Species and New Records of Marine Isopods From San Juan Archipelago, Washington, U.S.a

Two new species of Paramunnidae (Crustacea, Isopoda, Asellota) from the South Shetland Islands

“…The genus Austrosignum was erected by Hodgson (1910) to include the species of Paramunnidae with eyes small on long slender peduncles, mandibular palp absent (although it was not observed in the type species (A. grande Hodgson, 1910), A. glaciale Hodgson, 1910 shows it, and it seems to be synonymic with the type species (Wilson, 1997); nevertheless Wilson (personal communication 2003) studied a collection from the type locality, Winter Quarters Bay in McMurdo Sound, and none of the specimens, male or female had mandibular palp), and lateral margins of pleotelson smooth. Before the erection of the genus Munnogonium George & Strömberg (1968), Austrosignum included the following species: erratum Schultz, 1964;falklandicum Nordenstam, 1933;glaciale Hodgson, 1910;globifrons Menzies, 1962;grande Hodgson, 1910;latifrons Menzies, 1962;tillerae Menzies & Barnard, 1959; and also incisa (Richardson, 1908), described as Austrimunna. Austrimunna incisa (Richardson, 1908) needs a complete redescription, because the description does not include all the appendages, and only the habitus in dorsal view, the pereopod 1, and the male pleopod 1 were figured.…”

“…Several of these species were wrongly described as Austrosignum, for example falklandicum, globifrons and tillerae, because they do not have long ocular stalks. George & Strömberg (1968) created the genus Munnogonium to group the species of Paramunnidae close to Austrosignum, but having short ocular peduncles. The type species (waldronense George & Strömberg, 1968) is synonym with Austrosignum tillerae Menzies & Barnard, 1959(Bowman & Schultz 1974.…”

“…George & Strömberg (1968) created the genus Munnogonium to group the species of Paramunnidae close to Austrosignum, but having short ocular peduncles. The type species (waldronense George & Strömberg, 1968) is synonym with Austrosignum tillerae Menzies & Barnard, 1959(Bowman & Schultz 1974. In addition, Wilson (1997) assumed that A. tillerae may be synonym with A. erratum Schultz, 1964.…”

“…Mandibular Florida (Hooker, 1985) laterally dentate to point of uropodal insertion (7 teeth in the figure). Antennal article with seta- armigerum Shimomura & Mawatari, 2000;erratum (Schultz, 1964); orientale Shimomura & Mawatari, 2000;somersensis Kensley, 1994; tillerae (Menzies & Barnard, 1959); and waldronense George & Strömberg, 1968. One of these species (affinis) should be removed from Munnogonium because it has long ocular stalks.…”

Revision of Austrosignum Hodgson and Munnogonium George & Strömberg (Paramunnidae) with descriptions of eight new genera and two new species, (Crustacea: Isopoda: Asellota)

“…The aim of this paper is to review the genera Austrosignum Hodgson, 1910 (type species A. glaciale Hodgson,1910) and Munnogonium George & Strömberg, 1968 (type species M. waldronense George & Strömberg, 1968). Lack of clarity in the diagnoses of the two genera has, over time, led to significant confusion as to where to place newly discovered species more or less similar to the two type species.…”