四川老鹳草属植物的花粉形态及其系统学意义

用光学显微镜和扫描电镜对分布在四川的８组３０种老鹳草属植物进行了花粉形态观察，并结合植物的外部形态特征研究了它们的一些系统学意义。     

中国淫羊藿属小花类群分类系统

通过对大量标本、野外居群的观察分析和文献研究,回顾了淫羊藿属的分类学研究历史,分析了中国淫羊藿属小花类群的重要分类性状及演化趋势,初步提出中国淫羊藿属小花类群的分类系统。结果表明：分布于中国的淫羊藿属小花类群有20种,应以花部形态特征及演化规律为依据划分为4组：1．花辩扁平型组Sect．Campanulatae;2．花瓣浅兜型组Sect．Gibbae;3．花瓣囊型组Sect．Sacciferae;4．花瓣具短距组Sect．Calcar。     

Eustigmaeus floridensis sp. nov., a new mite species of the genus Eustigmaeus Berlese, 1910 (Acari: Stigmaeidae) from citrus in Florida

Eustigmaeus floridensis sp. nov. is described and illustrated based on female specimens collected from citrus trees in Florida, USA. The new species is closely related to Eustigmaeus arcuata, Eustigmaeus segnis and Eustigmaeus microsegnis, all known to occur in Florida. Eustigmaeus floridensis sp. nov. can be distinguished by larger dimples associated with setae sce, d₂ and e₁ containing at least four or more vacuoles centrally; dorsal body setae broadly lanceolate and feather-like, except c₂, which is slender; anogenital area with striae and one pair of serrated aggenital (ag1) and three pairs of serrated pseudanal (ps_1?3) setae. A key to the Eustigmaeus species known to occur across USA is also provided.     

New species of Hygiella Mesnil (Diptera: Tachinidae), parasitoids of leaf insects (Phasmatodea: Phylliidae)

The Oriental genus Hygiella Mesnil is revised: three species are described as new, Hygiella angustifrons sp. nov., Hygiella luteipes sp. nov. and Hygiella proclinata sp. nov., and two known species are re-described, Hygiella nigripes Mesnil and Hygiella pygidialis Mesnil. A key to these five species is provided. The host of H. proclinata, Phyllium siccifolium (Linnaeus) (Phasmatodea: Phylliidae), is recorded for the first time as a host of the Tachinidae. The systematic position of Hygiella is discussed and the genus is placed in the tribe Acemyini (Exoristinae) based on the structure of the male terminalia.     

Redescription of Leydigia parva Daday, 1905 and assignment to Parvalona gen. nov. (Cladocera: Anomopoda: Chydoridae)

A morphological investigation of Leydigia parva Daday, (Chydoridae: Anomopoda: Cladocera), based on specimens from Paraguay (type specimens) and Brazil, clarifies its position in the subfamily and prompts its assignment to a new genus, Parvalona. The affinity of this rare benthic chydorid with Leydigia Kurz, 1875 and Alona Baird, 1843, in which this taxon was placed earlier, is discussed.     

Water mites of the family Hygrobatidae Koch from southern Africa (Acari: Hydrachnidia)

New records are given of the water mite family Hygrobatidae (without the genus Atractides) from southern Africa (South Africa, Botswana, Namibia). In addition to one new subgenus of the genus Hygrobates, namely Inflatibates, four new species are described, namely Hygrobates draconicus, H. laceratoides, H. okavangoensis, and H. inflatipes as well as one new subspecies, namely Hygrobates spathuliferus cederberg. The following synonyms are established: the subgenus Capobates Thor with Hygrobates Koch, Hygrobates sanguineus transvaalensis K. O. Viets with Hygrobates spathuliferus (Lundblad), and Ambiguobates permixtus agnewi K. O. Viets with Ambiguobates permixtus K. Viets. The male of Australiobates pilosus (K. Viets) is described for the first time. The synonymization of Diversibates with Australiobates can now be confirmed. Finally, keys are given for the known genera of southern Africa, as well as for all known species of the genus Hygrobates from southern Africa.     

A new species of Nemedina Chandler from mid-Asia (Diptera: Empidoidea) resolves the phylogenetic position of this enigmatic genus

Nemedina zaitsevi sp. nov. is described from Kazakhstan and includes the first extant male specimens of this genus. The combination of male genitalic features (e.g. long and narrow gonocoxal apodemes, shortened hypandrium), absence of female tergite 10, and absence of epipharyngeal blades strongly support the hypothesis that Nemedina Chandler and the Atelestinae are sister groups.     

Species of Oswaldella Stechow, 1919 (Cnidaria: Hydrozoa: Kirchenpaueriidae) from US Antarctic expeditions,with the description of three new species

Seventeen species of the genus Oswaldella Stechow have been studied, three of which are new to science (Oswaldella frigida sp. nov., O. medeae sp. nov. and O. monomammillata sp. nov.). The material studied was collected by several US Antarctic expeditions. Each species is described and figured, the systematic position amongst allied species is discussed and available data concerning autecology and geographical distribution are given. The remaining eight known species of the genus are also considered, regarding synonymy, autecology and geographical distribution. Finally, a general survey of the bathymetrical and biogeographical distribution of the known species of Oswaldella is given.