A chiton with shining shell (Mollusca: Polyplacophora) from deep waters near Papua New Guinea

2020 ◽  
Vol 30 (2) ◽  
pp. 87-91
Author(s):  
B. I. Sirenko

A new deep-water polyplacophoran, Stenosemus nitens sp. nov., from Papua New Guinean waters is described. It differs from other species of the genus Stenosemus by having a sculptureless, smooth and shiny surface of the tegmentum, smooth dorsal spicules with only a few small transverse wrinkles on top, and unusual bends of the front margin of the intermediate valves. Within the genus the new species belongs to a limited group of coloured chitons.

Zootaxa ◽  
2005 ◽  
Vol 929 (1) ◽  
pp. 1 ◽  
Author(s):  
SIMON VAN NOORT ◽  
JEAN-YVES RASPLUS

Two new species of Robertsia, R. weibleni and R. vaamondei are described from Papua New Guinea. Four species of Robertsia are now known from a single host fig tree species, Ficus xylosycia. Illustrations and keys are provided for both sexes of all four species. An online key is available at: http://www.figweb.org/Fig_wasps/Pteromalidae/Sycoecinae/Key/Robertsia.htm. Host relationships and biology are discussed.


2020 ◽  
Vol 30 (1) ◽  
pp. 7-12
Author(s):  
B. I. Sirenko

The paper describes a new species of the genus , sp. nov., found in deep waters off Papua New Guinea. This species differs from primarily in the dorsal scales, the marginal spicules, sculpture of the jugal area and the shape of the central teeth of radula. There are apparent similarities between the species of the genus Thermochiton , Connexochiton platynomenus , C. kaasi and Ischnochiton crassus. The last species is proposed to be transferred to . Owing to the friable, rusty brown deposits that densely cover the shell and girdle of both specimens of , the latter probably lives in areas of high chemical activity.


Zootaxa ◽  
2005 ◽  
Vol 1024 (1) ◽  
pp. 1 ◽  
Author(s):  
PHILIP D. PERKINS

The Australian and Papua New Guinean species of the water beetle genus Gymnochthebius Orchymont, 1943, are revised, based on the study of 4,904 specimens. The genus is redescribed, and redescriptions are provided for G. australis (Blackburn), G. brisbanensis (Blackburn), G. clarki (Deane), G. levis (Deane), G. lividus (Deane), G. notalis (Deane), and G. tenebricosus (Deane). Lectotypes are designated for Ochthebius australis Blackburn, 1888, and Ochthebius tenebricosus Deane, 1931. Ochthebius fischeri Deane, 1931, and Ochthebius leai Deane, 1931, are synonymized with Ochthebius australis Blackburn, 1888; Ochthebius flavocinctus Deane 1933, is synonymized with Ochthebius lividus Deane, 1933; and Ochthebius angustipennis Deane, 1931, is synonymized with Ochthebius clarki Deane, 1931. Twenty-nine new species are described, and a key to the 36 species known from Australia and Papua New Guinea is given. High resolution digital images of all primary types are presented (online version in color), the male genitalia are illustrated, and Australian geographic distributions are mapped. Only one species, G. clarki, inhabits both Australia and Papua New Guinea; two species, G. bacchusi n. sp. and G. papua n. sp. are endemic to Papua New Guinea; 33 species are endemic to Australia. Members of Gymnochthebius are found at the gravelly/sandy/silty margins of flowing and standing water. A preliminary grouping of species according to microhabitat substrate is presented. Correspondences between ventral morphology and microhabitat preferences suggest that a few species are evolving toward humicolous habits. New species of Gymnochthebius are: G. angulonotus (Queensland, Tinaroo Creek Road via Mareeba), G. bacchusi (Papua New Guinea, Morobe District, c. 7 miles Lae Bulolo Road), G. benesculptus (South Australia, Warburton River, 1 km N White Bull Yard Kalamurina Stn.), G. coruscus (South Australia, Warburton River, 1 km N White Bull Yard Kalamurina Stn.), G. fontinalis (South Australia, Elizabeth (Mound) Springs, 7 km NW Coward Springs R.S.), G. fumosus (New South Wales, Sydney), G. hesperius (Western Australia, Lyndon River Bridge), G. inlineatus (Western Australia, Millstream, creek near Deep Reach), G. lustrosulcus (Queensland, Cloncurry), G. minipunctus (Northern Territory, Palm Valley), G. nanosetus (Northern Territory, Roderick Creek, Gregory National Park), G. nicki (Victoria, Possum Hollow falls, West branch Tarwin River, 5.6 km SSW Allambee), G. nigriceps (South Australia, Mound Spring near Coward Springs), G. papua (Papua New Guinea, Morobe District, ca. 10 km S Garaina Saureri), G. perpunctus (South Australia, Somme Creek, between Angaston and Sedan), G. pluvipennis (South Australia, Warburton


Zootaxa ◽  
2019 ◽  
Vol 4563 (1) ◽  
pp. 1
Author(s):  
OWEN D. SEEMAN

The Australian Megisthanidae are revised, resulting in the description of five new species from passalid beetles (Coleoptera: Passalidae) in Queensland: M. manonae sp. nov. from Mastachilus australasicus; M. simoneae sp. nov. from Mastachilus polyphyllus; M. southcotti sp. nov. from Aulacocyclus fracticornis; M. womersleyi sp. nov. from Protomocoelus australis; and M. zachariei sp. nov. from Aulacocyclus kaupii. Megisthanus womersleyi is also based on material from Misima Island, Papua New Guinea, originally identified as Megisthanus doreianus Thorell, 1882. Megisthanus modestus Berlese, 1910, is redescribed based on material from Pharochilus spp. collected from Canberra, New South Wales, Queensland and Tasmania. The Papua New Guinean species Mastachilus papuanus Womersley, 1937 is diagnosed and discussed in relation to the other species from New Guinea. Additional collections of Megisthanus leviathanicus Seeman, 2017 and M. thorelli Womersley, 1937 are also reported. A genus description and a key to the eight Australian species of Megisthanus are provided. 


Zootaxa ◽  
2017 ◽  
Vol 4226 (4) ◽  
pp. 571
Author(s):  
ARTHUR ANKER

Alpheopsis keijii sp. nov. is described on the basis of material collected between 90 and 487 m in Japan, the Philippines, Papua New Guinea and Réunion Island. The new species belongs to the A. trispinosa species group and is morphologically closest to A. trispinosa (Stimpson, 1860), A. garricki Yaldwyn, 1971, A. shearmii (Alcock & Anderson, 1899), and especially A. africana Holthuis, 1952. Field data indicates that A. keijii sp. nov. may be associated with deep-water sponge grounds. A provisional key to the currently known species of the A. trispinosa group is provided. 


1990 ◽  
Vol 4 (5) ◽  
pp. 973 ◽  
Author(s):  
DA Duckhouse

Brunettia Annandale (sensu Duckhouse 1966) has previously been known in Australopapua from thirty-three species, comprising twenty-eight from Papua-New Guinea, but only five from Australia, all in the southern states. This anomaly is now removed with the description of seventeen new species from Queensland and the Northern Territory, showing that the major evolutionary centre extends from Papua-New Guinea far into northern Australia, and that the southern species are not in reality separated by a disjunction. Three new species are also described from southern Australia, two from New Guinea, and two from New Caledonia (the first from this island). The phylogenetic importance of Brunettia is especially due to the inclusion in it of taxa that are cladistically basal and annectant, nearly all Australopapuan. The mix of tribal, generic, subgeneric and species characters found in earlier descriptions is ordered into a strict hierarchical sequence, and Brunettia is divided into seven subgenera — Brunettia, s. str., Plesiobrunettia, subg. nov., Atrichobrunettia Satchell, Maurobrunettia, subg. nov., Campanulobrunettia, subg. nov., Horobrunettia, subg. nov., and Mrrousiella Vaillant, stat. nov., this last resurrected from synonymy with Atrichobrunettia. Of these, Maurobrunettia occurs in northern Australia, Plesiobrunettia is New Guinean, Campanulobrunettia and Atrrchobrunettia are Australopapuan, and Horobrunettia is mainly Australopapuan but has one species in the Philippines. Brunettia s. str. is more widely distributed, but extensively diversified in Papua-New Guinea, and Mirousiella is European. The ten Papua-New Guinean species placed by Quate & Quate (1967) in Atrichobrunettia are transferred into the various subgenera of Brunettia (combs. nov.), and their Brunettia species are also assorted into these subgenera. New keys are provided covering all Australopapuan Brunettia species. The genealogical status of Mormiini and Maruinini are discussed. It is concluded that because Mormiini are an offshoot of the Maruinini, the Maruinini are paraphyletic, but that this defect cannot be overcome until more is known of maruinine phylogeny.


1992 ◽  
Vol 11 (1) ◽  
pp. 85-93 ◽  
Author(s):  
Martin R. Langer

Abstract. Two new genera and eight new species of benthic foraminifera are described from the shallow water, tropical lagoon of Madang, Papua New Guinea. The new hauerinid genus Pseudolachlanella is characterized by juvenile cryptoquinqueloculine, adult almost massiline arranged chambers, and a slitlike, curved aperture with parallel sides and a long, slender, curved miliolid tooth. Pitella haigi n. gen., n. sp. is a new foraminifera with cryptoquinqueloculine arranged chambers, an almost entirely pitted shell surface (pseudopores) and a rounded aperture with a short simple tooth. Among the other species described as new are four hauerinids and two agglutinated foraminifera All new species described here occur sporadically in the shallow water back- and forereef environments of the lagoon (0–55m), and live infaunally and epifaunally in well-oxygenated, fine and coarse grained biogenic sediments. They are absent in muddy, organic-rich, low-oxygen sedimentary environments within bay inlets where variations of salinity are considerable.


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