Alexgeorgea, a bizarre new genus of Restionaceae from Western Australia

1976 ◽  
Vol 24 (2) ◽  
pp. 281 ◽  
Author(s):  
S Carlquist

The genus Alexgeorgea is described as new to science. Two species were discovered during field work in 1974: A. subterranea, from the Jurien Bay-Badgingarra sandplain, W.A., and A. arenicola, from sand areas short distances north and east of Perth. Alexgeorgea is highly distinctive in bearing single-flowered female inflorescences on sessile horizontal rhizomes c. 10-15 cm below the sand surface. In flower, only the tips of the bracts and the three ephemeral styles appear above the ground, so that female flowers are invisible most of the year and inconspicuous even at anthesis. Fruits are exceptionally large for Restionaceae, indehiscent, one-seeded and borne sessile on underground rhizomes. Difficulty in dispersal of these fruits would explain the existence of presumptive all-female colonies of A. arenicola which may have originated from single-fruit introductions to sites at the periphery of the range of that species. Increase in the size of colonies is mostly vegetative, by branching of the elongate subterranean rhizomes. It is suggested that the underground flowering and fruiting habit is related to fire resistance. Alexgeorgea appears most closely related to Western Australian species of Restio on account of striking vegetative similarities. The two species of Alexgeorgea are illustrated by habit photographs and macrophotographs of living plants taken during the field work.

Zootaxa ◽  
2019 ◽  
Vol 4554 (1) ◽  
pp. 101
Author(s):  
JEAN JUST

The Western Australia fauna of Bubocorophiina (Siphonoecetini) from the Albany area in the south to Port Hedland in the north-west, a coastal stretch of about 2000 km, is reported. One new genus and 11 new species are described: Rhinoecetes sinuduopopulus sp. nov., R. rockinghamia sp. nov., R. makritrichoma sp. nov., R. lowryi sp. nov., R. caetus sp. nov., R. karkharius sp. nov., R. wamus sp. nov., R. setosus sp. nov., Borneoecetes minimus sp. nov. (first record of Borneoecetes Barnard & Thomas, 1984 from Australia); Sinoecetes reni sp. nov. (first record of Sinoecetes Ren, 2012 from Australia), and Pararhinoecetes bicornis gen. et sp. nov. In addition, Cephaloecetes enigmaticus, previously described from the southeast coast of Australia, is recorded in the Albany area. A key to Western Australian Bubocorophiina is presented, and the distribution around Australian of the genera in the subtribe is commented upon. 


2003 ◽  
Vol 17 (3) ◽  
pp. 387 ◽  
Author(s):  
Gonzalo Giribet

Examination of museum specimens belonging to the cyphophthalmid Gondwanan family Pettalidae has rendered a collection of specimens placed in the new genus Karripurcellia. The genus includes three species, K.�peckorum, sp. nov., K. sierwaldae, sp. nov. and K. harveyi, sp. nov., from the Pemberton area in Western Australia. These are the first cyphophthalmid species found outside Queensland in Australia. Karripurcellia, gen. nov. is distinguished from other Australian pettalids by the lack of modifications in the anal plate, as well as the lack of the typical male anal glands of pettalids, sironids and the stylocellid genus Fangensis Rambla, 1994. Two of the species, K. peckorum, sp. nov. and K. sierwaldae, sp. nov., live sympatrically and have been collected in the same litter samples in one locality. The proposition of the new genus is accompanied by a cladistic analysis of all pettalid genera and most species within each genus, with the exception of the species-rich genus Rakaia Hirst, 1925. The cladistic analysis supports the monophyly of the Karripurcellia, gen. nov. species, but their sister-group relationships are unclear. However, the remaining Australian species cluster with the pettalids from New Zealand and South Africa, but not with Karripurcellia, sp. nov.


1980 ◽  
Vol 28 (6) ◽  
pp. 573 ◽  
Author(s):  
RJ Hnatiuk ◽  
AJM Hopkins

Observations of responses to aseasonal water stress are reported for 238 above-ground perennial species of native vascular plants in a 20 km2 area of Western Australia surveyed during the second consecutive year of below average rainfall. Eighty-six species (36%) were found with dead individuals. Both vegetative regeneration and seedling regeneration appeared to be successful means of surviving drought stress in this region. The drought affected species of the families Proteaceae and Epacridaceae more than those of other major families. There are similarities in the response of the vegetation to the two main, irregularly occurring phenomena, aseasonal drought and fire: both can affect vegetation over large areas and yet leave considerable patches within the area that are little affected. Together these two factors contribute to the production of complex and dynamic mosaic-patterns in the vegetation.


Zootaxa ◽  
2018 ◽  
Vol 4375 (3) ◽  
pp. 341 ◽  
Author(s):  
DOUGLAS A. CRAIG ◽  
DOUGLAS C. CURRIE ◽  
JOHN K. MOULTON

With new material available of most stages of many known Australian Paracnephia, including new species, it is now clear that certain segregates warrant assignment to new genera. This applies to Paracnephia gladiator Moulton & Adler, a Western Australia simuliid with numerous unique character states. The species is fully redescribed and assigned to Bunyipellum nov. gen. A diagnosis is provided and relationships discussed, as is historical biogeography. Bunyipellum appears to be more closely related to elements of the South American simuliid fauna than to any other Gondwanan Australian species.


1993 ◽  
Vol 7 (2) ◽  
pp. 197 ◽  
Author(s):  
GCB Poore ◽  
HM Lew Ton

The isopod family Idoteidae is diagnosed to distinguish it from other valviferan families. It is represented in Australia by 23 species and in New Zealand by four species. Except for the pelagic cosmopolitan species, Idotea metallica, all species occur only in shallow macroalgae and sea-grass habitats and are mostly confined to temperate waters. In Australia, the species have more or less limited ranges along the southern coast between Sydney (33°S.) and just north of Perth (29°S.) with the exception of three species which occur in subtropical Western Australia. In New Zealand, no species is found north of Wellington (41°S.). The valviferan family-groups are briefly reviewed and the Idoteidae rediagnosed. The Australian species Lyidotea nodata Hale, 1929 is removed to the arcturid complex, but its family placement is uncertain. Some species from New Zealand, 'Austridotea (Austridotea)' annectans Nicholls, 1937, 'A. (A.)' benhami Nicholls, 1937, 'Notidotea' lacustris (Thomson, 1879), and Idotea festiva Chilton, 1885, are regarded as chaetiliids and are also excluded. A new genus, Batedotea, is erected for Crabyzos elongata Miers. A neotype is selected for Zdotea stricta Dana and the species' position in Euidotea is confirmed. All genera and species are diagnosed and illustrated and complete synonymies are given. A key for their identification is presented. The Australian species are: Batedotea elongata (Miers), Crabyzos longicaudatus Bate, Engidotea cristata, sp. nov., Euidotea bakeri (Collinge), E. caeruleotincta Hale, E. danai, sp. nov., Euidotea halei, sp. nov., E. peronii (Milne Edwards), E. stricta (Dana), I. brevicorna Milne Edwards, I. metallica Bosc, Paridotea aquarii, sp. nov., P. collingei, sp. nov., P. miersi, sp, nov., P. munda Hale, P. simplex, sp. nov., P. ungulata (Pallas), Pentidotea australis Hale, Synidotea grisea, sp. nov., S. keablei, sp. nov., S. watsonae, sp. nov., Synidotea sp. and Synischia levidensis Hale. The New Zealand species are: Batedotea elongata (Miers), Euidotea durvillei, sp. nov., I. metallica Bosc and Paridotea ungulata (Pallas). A more restrictive definition of the Idotea implies that many of its Northern Hemisphere species may need to be included in other genera. Idotea hectica (Pallas) is placed in Synischia Hale.


Zootaxa ◽  
2018 ◽  
Vol 4508 (1) ◽  
pp. 101 ◽  
Author(s):  
YEN-PO LIN ◽  
TAKUMASA KONDO ◽  
TAKUMASA KONDO ◽  
PENNY J. GULLAN ◽  
LYN G. COOK

Cryptes utzoni Lin, Kondo & Cook sp. n. (Hemiptera: Coccidae) is described based on adult female morphology and DNA sequences from mitochondrial and nuclear loci. This Australian endemic species was found on the stem of Acacia aneura (Fabaceae) in Western Australia. All phylogenetic analyses of three independent DNA loci show that C. utzoni is closely related to C. baccatus (Maskell), the type and only species of Cryptes Maskell, 1892. The adult female of C. utzoni is described and illustrated and a table is provided of the characters that differ among adult females of the two species of Cryptes now recognised (C. baccatus and C. utzoni) and a morphologically similar Western Australian species, Austrolichtensia hakearum (Fuller). There is deep genetic divergence in COI among samples of C. baccatus, suggesting the possibility of a species complex in this taxon. 


1960 ◽  
Vol 8 (2) ◽  
pp. 289 ◽  
Author(s):  
A Neboiss

Species previously referred to the genus Elatichrosis Hyslop were found to consist of a number of distinct groups, and the genus is now restricted to that group surrounding the type species exarata (Candeze). 13 species are now recognized in the genus Elatichrosis s.s., of which nine are described as new, and all are entirely Australian in distribution. The new genus Lingana is proposed for the reception of illita (Candeze), and one new species from Western Australia. All extra-Australian species are now excluded from Elatichrosis.


Phytotaxa ◽  
2018 ◽  
Vol 334 (1) ◽  
pp. 75 ◽  
Author(s):  
KINGSLEY W. DIXON ◽  
MAARTEN J. M. CHRISTENHUSZ

Few plants are so cryptic as the underground orchids, Rhizanthella Rogers (1928: 1), of Australia. Unlike the species on the eastern seaboard of Australia, the Western Australian species spend their entire life cycle, including flowering, below the soil surface (only rarely with the tips of the bracts showing), making them unique among orchids and indeed, among flowering plants generally (Brown et al. 2013). Discovery in 1928 of the first underground orchid in Western Australia was an international sensation where the plant was described as ‘a remarkable subterranean orchid’ (Wilson 1929). The new taxon described in this paper resolves the enigmatic, disjunct distribution of Rhizanthella in Western Australia, where there was thought to be a central and southern node of a single species, R. gardneri Rogers (1928: 1).


2018 ◽  
Vol 8 (2) ◽  
pp. 35-42
Author(s):  
MAGNUS PETERSON

The precise type-locality of the infrequently encountered Western Australian species Nascio chydaea Olliff, 1886 is redefined from 28˚44ʹS, 116˚24ʹE to 34˚11ʹS, 118˚19ʹE, and thus George Masters is identified as the original collector and January–February 1869 as the date of collection of its lectotype and paralectotype. The first larval and adult hostplant records, Eucalyptus wandoo and an unidentified Asteraceae species respectively, as well as three further distributional records from south-west Western Australia, are provided for N. chydaea and discussed. A colour photograph of its dorsal habitus is also provided, as well as a distribution map for this species. Relationships, general zoogeography and biology of all Nascio species are briefly discussed.


Zootaxa ◽  
2017 ◽  
Vol 4243 (3) ◽  
pp. 401 ◽  
Author(s):  
MOHAMMAD JAVIDKAR ◽  
RACHAEL A. KING ◽  
STEVEN J. B. COOPER ◽  
WILLIAM F. HUMPHREYS ◽  
ANDREW D. AUSTIN

The oniscidean fauna of Australia is generally poorly known but recent sampling has revealed a new family, Paraplatyarthridae, found in both terrestrial and groundwater calcretes of central Western Australia. The family was initially described based on a new genus and species, Paraplatyarthrus subterraneus Javidkar and King, 2015. Here we describe an additional five Paraplatyarthrus species from the Yilgarn region of Western Australia, based on both morphological and molecular evidence (COI divergences). Four species are subterranean: P. crebesconiscus Javidkar and King sp. nov., P. cunyuensis Javidkar and King sp. nov., P. occidentoniscus Javidkar and King sp. nov., and P. pallidus Javidkar and King sp. nov., and one is a surface species, P. nahidae Javidkar and King sp. nov. A key to their identification is provided along with information on their distribution. In addition, type material of the two described Australian species of Platyarthridae, Trichorhina australiensis Wahrberg, 1922 from Western Australia and T. tropicalis Lewis, 1998 from Queensland, are examined. Morphological reassessment of type material shows T. australiensis belongs to Paraplatyarthrus (comb. nov.) and that T. tropicalis is correctly placed in Trichorhina, confirming that the genus and family Platyarthridae occur in Australia.  


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