澳大利亚新英格兰地区桉树林的群落结构特征

本文研究澳大利亚新英格兰地区开阔林的群落结构特征。结果表明其种类组成较为简单,调查的4.8公顷样地中树木层只有18种。隶属于4属4科,树木个体90％为桉树;灌木层有32种19属13科;草本层有95种20属10科。群落的垂直结构为三层:树层,灌木层和草本层;一些林段只有二层(缺灌木层),或四层(增多小树层)。优势种群的分布格局多为集群分布。非优势种群的分布格局则多为随机分布格局。种间联结现象较弱,除少数种对外,联结系数低或没有联结。种间生态位的重叠值低,反映了诸多种群的独立分布特征。在其组织结构水平上,除草本层外。物种多样性指数、群落均匀度、生态优势度均较低。反映群落的优势种明显,为种多群落类型。     

西太平洋与南海鄰近地区气压场的大尺度同步变动

本文用1978年至1983年冬、夏季资料,讨论了大规模的气压同步振荡的发展特征,这种振荡有明显的24天周期和2.5—3.3毫巴的振幅.     

The henicopid centipede Haasiella (Chilopoda: Lithobiomorpha): new species from Australia,with a morphology-based phylogeny of Henicopidae

Paralamyctes (Haasiella) Pocock, 1901 (= Wailamyctes Archey, 1917) includes three described species from New Zealand and its Subantarctic Islands. Australian species of P. (Haasiella) include P. (H.) subicolus n. sp. from Tasmania and a clade composed of P. (H.) cammooensis n. sp. from Queensland and New South Wales, P. (H.) ginini n. sp. from New South Wales and the Australian Capital Territory, and an allied species from Tasmania. Monophyly of P. (Haasiella) and the membership of a P. (H.) cammooensis Group are supported by parsimony analysis of morphological characters. A grouping of P. (Haasiella) and P. (Thingathinga) as retrieved by molecular data analysis is also found in minimal length cladograms based on morphology. The dataset incorporates new information on several previously poorly known henicopids, including the types of Lamyctopristus Attems, 1928, and Analamyctes Chamberlin, 1955.     

A revision of Tachyphron Brown and description of two new genera within the Ariphron group (Hymenoptera: Tiphiidae)

The Australasian genus Tachyphron Brown is revised, and two new New Guinean genera, Deuterothynnus gen. n. and Heligmothynnus gen. n., described. Fifteen species are included in Tachyphron of which seven are described as new (T. aculeatus sp. n., T. athertonensis sp. n., T. mantonensis sp. n., T. neosubfragilis sp. n., T. nigrisetatus sp. n., T. planus sp. n. and T. townsvillensis sp. n.), and a further two, Aelurus comatus Smith and Aelurus fragilis Smith, transferred from Tachynomyia. Thynnus insularis Smith is transferred from Tachynomyia Guérin to Deuterothynnus and a further three new species, D. fulvicentratus sp. n., D. fulvisetatus sp. n. and D. parallelus sp. n. described. Aelurus atratus Cameron and Takyomyia sabronensis Kimsey are transferred from Tachynomyia and Tachyphron, respectively, to Heligmothynnus and a further two new species, H. microspinus sp. n. and H. neoaratus sp. n. described. T. megacephala (Turner) is synonymized with Tachynoides flavopicta (Ritsema) and, therefore, removed from Tachyphron. A key to the Ariphron group of genera is provided, as well as keys to the males of Tachyphron, Deuterothynnus and Heligmothynnus, although the male of D. insularis is associated tentatively with the female holotype only on the basis of collection records. Only the females of D. insularis, T. armidalensis Brown and T. subtriangularus Brown are known, the latter two being described for the first time. Evidence is presented to suggest that T. subtriangularus may be bivoltine in northern Australia.     

A new genus and subfamily of Typhloplanidae (Platyhelminthes,Rhabdocoela) from Australia with a cladistic analysis of subfamily relationships

During a survey of marine interstitial Platyhelminthes of North Stradbroke Island, Queensland, Australia, a new taxon of Typhloplanidae (Rhabdocoela) was found, namely Cephalopharynx cannoni gen. nov. sp. nov. This new monotypic genus combines a suite of characters that set it apart from the remaining 63 genera present in the known eight subfamilies. It is unique in the lack of adenal and dermal rhabdites, the anterior position of the pharynx rosulatus, presence of a single anterior testis, and novel stylet structure. These character states substantiate the erection of a new subfamily, Cephalopharynginae, based on cladistic criteria. A key to the subfamilies of Typhloplanidae is provided.     

A redescription of the type specimen of Crotonia (= Acronothrus) obtecta (O. Pickard-Cambridge, 1875), (Acari,Cryptostigmata) and a discussion of its taxonomic relationships

Summary

The holotype of Crotonia (= Westwoodia) obtecta (O. Pickard-Cambridge, 1875) has been cleaned and is redescribed. Study indicates that Crotonia Thorell, 1876 is a senior synonym of Acronothrus Berlese, 1916, and that the family Crotoniidae Thorell, 1876 is a senior synonym of the Holonothridae Wallwork, 1963     

A new species of Phyllodistomum (Digenea: Gorgoderidae) from Australian and New Zealand freshwater fishes with notes on the taxonomy of Phyllodistomum Braun, 1899

Phyllodistomum magnificum sp. nov., is described from the urinary bladder of Australian and New Zealand freshwater fish. Australian hosts were Anguilla reinhardtii, Tandanus tandanus, Hephaestus fuliginosus and Scortum hilli. New Zealand hosts were Anguilla australis and A. dieffenbachii. A presumed part of the life-cycle is described. Typical cystocercous cercariae are produced by sporocysts in the gills of a Pisidium species and are eaten by aquatic arthropods in which they encyst. The taxonomy of the genus Phyllodistomum is discussed and it is suggested that those species with cystocercous cercariae form a phylogenetic unit with Gorgodera, Gorgoderina, Progorgodera and Gorgotrema species.     

Two new genera of Cryptocephalinae (Coleoptera: Chrysomelidae) from Australasia

Two new genera are described for some species of Cryptocephalinae from the Australasian region. Melatia is erected for 29 species hitherto described in Cadmus Erichson, Cryptocephalus Geoffroy and Lachnabothra Saunders, from New Guinea and nearby islands; Ditropidella for four species described in Coenobius Suffrian and Ditropidus Erichson, from southern Australia.     

Taxonomy,phylogeny and distribution of the longicorn beetle genus Allotisis Pascoe (Coleoptera: Cerambycidae: Phoracanthini)

The genus Allotisis Pascoe is revised. Diagnosis of Allotisis is given, three known species are redescribed and six species are described as new : A. repleta, A. notabilis, A. rara, A. labyrinthina, A. monteithi and A. furva. All species are from Australia. Thoris moerens Blackburn is synonymous with A. unifasciata. A key to the nine species is provided. Phylogenetic analysis suggests that this genus be divided into two species groups, monteithi-group and unifasciata-group. Several subgroups are also identified. Biogeographic distribution of these species groups and subgroups is discussed.     

Cheilostomata (Bryozoa) from the South Atlantic

Two new genera Monitus gen.nov. and Cuckoldillo gen.nov., a new species of each of Scyphax, Rhyscotus, Filippinodillo, Merulana, Myrmecodillo, and three new species of Acanthodillo are described from Australia. The unavailability of the name Pseudodiploexochus and the confusion concerning the diagnoses of the genera Merulana Budde-Lund and Cubaris Brandt is noted. The synonomy of Merulana and Pyrgoniscus is discussed.