不同地理种源侧柏对侧柏绿胶杯菌抗性的测定试验

收集侧柏２１个种源,经繁育定植后,连续３年逐年测其对侧柏绿胶杯菌的抗性。其分析结果表明,不同地理种源侧柏之间其生长状况的优劣与抗病性关系不大,同一种源内生长势良好者其感病指数较轻;种源之间对绿胶杯菌的抗性存在有明显的差异,其中抗性较强的有河北民寿,山西晋城,贵州黎平,山西交城和陕西华阴种源,但是均未达到可以用以进行病害防治的高度抗病的程度。     

山东链霉菌产抗真菌物质的理化性质的初步研究

从土壤中筛选得到1株产广谱抗真菌物质山东链霉菌(Streptomyces shandongensissp．nov)，该菌代谢产物对多种植物病原真菌有很强的抗菌作用．研究了温度及pH变化、UV照射对该菌发酵液中抗菌物质的稳定性的影响；并利用pH纸层析等多种层析技术研究了该抗菌物质的水溶性、离子特性等一些理化性质，为这一农用抗生素的进一步纯化和结构测定提供依据．     

A new and enigmatic representative of Leucocythere Kaufmann, 1892 from the Eastern Cape Province (South Africa) (Crustacea,Ostracoda)

Leucocythere helenae sp. nov. is described from a small, semi-permanent dam near Grahamstown (RSA). It belongs to Leucocythere s.s., but is at the same time characterized by a number of aberrant features, especially the shape and size of the large copulatory process on the hemipenis and the relatively short setae on the P(3) of the male. A cladistic analysis is conducted and it appears that within Leucocythere, the African species have the most plesiomorphic character states. The discovery of L. helenae sp. nov. in South Africa furthermore falsifies previous hypotheses on the age and origin of the Leucocytherini in general and Leucocythere s.s. in particular. It should now be accepted that the latter genus is not of Pleistocene age, but much older, although the lack of fossil material prevents more exact dating. Also, when the cladogram is studied in conjunction with the present day distribution map of Leucocythere, the concept of a Palaearctic origin of this genus must be rejected. The most plausible hypothesis to date on the origin of this group appears to be a generalized distribution of a leucocytherid ancestor over Europe, Asia and Africa (at least), with subsequent speciation through vicariance.     

A new genus and two new species of Pudeoniscidae Lemos de Castro 1973 (Crustacea: Isopoda: Oniscidea) from Brazil

To date, the family Pudeoniscidae includes six species and three genera, Pudeoniscus, Brasiloniscus and Iansaoniscus, with distributions restricted to Brazil. Here, we redefine the family Pudeoniscidae based on the discovery of a new genus and two new species, Oxossioniscus pataxo sp. nov. and Oxossioniscus akoko sp. nov., from the Brazilian Atlantic forest in the state of Bahia, and on the examination of Pudeoniscus birabeni and Pudeoniscus obscurus. Moreover, P. obscurus is re-described and new records are provided for P. birabeni.

http://www.zoobank.org/urn:lsid:zoobank.org:pub:A0123730-C623-49CE-8665-AE17FDDF994A.     

Two new genera of the family Pilumnidae (Crustacea: Decapoda: Brachyura) from Queensland,Australia

Two new genera of Pilumnidae each with a single new species are described from southeastern Queensland waters. Priapipilumnus is defined by the greatly swollen base and simple blunt apex of the male first pleopod and the concomitant posteriorly protruding, bilobed, third abdominal segment. Takedana is separable by the very short spinous anterolateral margins, the swollen branchial regions, the moderately short walking legs, and the strongly spined chelae. Actumnus pugilator is reassigned to Bathypilumnus Ng and Tan, 1984.     

A review of the genus Sisyrophanus Karsch 1886 (Diptera: Bombyliidae)

The Afrotropical genus Sisyrophanus Karsch is reviewed and a key is provided for the separation of the eight known species, including Sisyrophanus stylifer sp. nov. which is described from Burundi and Tanzania.     

Genus Baseodiscus (Nemertea: Heteronemertea): Molecular identification of a new species in a phylogenetic context

A new heteronemertean, Baseodiscus jonasii sp. nov., is described from Guadalcanal, Solomon Islands. It resembles B. delineatus in inner morphology but can be distinguished from this species by its different colour pattern and differences in the nucleotide sequence of the mitochondrial 16S rRNA gene. The monophyletic status of the genus is investigated by reconstructing the phylogeny of six specimens from four species assigned to this genus, together with 22 specimens from nine other heteronemertean genera, using parsimony and Bayesian analysis. The results imply that Baseodiscus is a monophyletic group while several other heteronemertean genera are non‐monophyletic.     

Chilarboreus gen. nov., a new genus of Chilean Scirtidae (Coleoptera: Scirtoidea), with descriptions of three new species

The genus Chilarboreus gen. nov. is described from Nothofagus forests of Chile to accommodate three new species: Chilarboreus fossulatus sp. nov., Chilarboreus acuticollis sp. nov. and Chilarboreus darwini sp. nov. The genus is subdivided into two subgenera: Chilarboreus subgen. nov. (type species: C. fossulatus) and Pictarboreus subgen. nov. (type species: C. darwini). Identification keys to the genera of Chilean Scirtidae and the species in the genus Chilarboreus are provided. The state of knowledge of Chilean Scirtidae is summarized. The position of Chilarboreus within Scirtidae and the phenomenon of wing reduction in Scirtidae are discussed.     

Two new species of the genus Sinella Brook, 1882 (Collembola: Entomobryidae) from East China

Two new species, Sinella hexaseta sp. nov. and Sinella pauciseta sp. nov., collected from East China, Anhui and Zhejiang provinces, respectively, were described. Both are easily discriminated from each other and all known Sinella species by their unique dorsocentral chaetotaxic patterns on Abd. IV. In S. pauciseta sp. nov., postlabial setae H_1–4 are ciliate, which are smooth in all other known species of the genus.