Taxonomy of the Neotropical Genus Americabaetis,New Status (Insecta: Ephemeroptera: Baetidae)

Americabaetis (Insecta: Ephemeroptera: Baetidae), previously considered synonymous with Acerpenna, is reinstated and given generic rank. The genus differs from Acerpenna in lacking hindwings, gills on abdominal segment 1, and a conical process between the male genital forceps, and in possessing apically rounded gills on abdominal segment 7. The genus has a general Neotropical distribution with a northern limit in east-central Mexico. Five new species of Americabaetis are described from South America: A. alphus, new species, from Argentina, Bolivia, Brazil, Chile, and Paraguay; A. labiosus, new species, from Brazil, Paraguay, and Uruguay; A. longetron, new species, from Brazil, Paraguay, and Uruguay; A. maxifolium, new species, from Paraguay; and A. titthion, new species, from Brazil. Americabaetis boriquensis, new combination; A. intermedius, new combination; A. naranjoi, new combination; A. pleturus, new combination; and A. robacki, new combination, are reviewed.     

Three New Genera of Small Minnow Mayflies (Insecta: Ephemeroptera: Baetidae) from the Andes and Patagonia

Three new genera and three new species of Baetidae (Insecta: Ephemeroptera) are described from the Andes and Patagonia. Larvae of Andesiops, new genus, are distinguished by the apically bifid right prostheca and two rows of denticles on the tarsal claws. Larvae of Deceptiviosa, new genus, are distinguished by the apically bifid right prostheca and small subapical denticle on the tarsal claws. Larvae of Nanomis, new genus, are distinguished by the apically acute maxillary palp segment 2, smooth posterior margin of the terga, and paddle-shaped subapical seta on the hindtibiae. Adults of Andesiops and Deceptiviosa are similar, but distinguished from other South American baetids by having hindwings with a small costal process in the basal one third and three lon gitudinal veins with the middle vein being forked, and an elongate and ellipsoidal genital forceps segment 3. Larvae and adults of Andesiops peruvianus, new combination, are redescribed, and additional locale data are provided for Argentina, Bolivia, Ecuador, and Venezuela. Deceptiviosa ardua, new species, is described from larvae from Chile, and D. torrens, new species, is described from larvae and adults from Chile and Argentina. Nanomis galera, new species, is described from larvae from Argentina, Colombia, Ecuador, and Peru.     

Aeolid opisthobranch molluscs (Glaucidae) from the Indian Ocean and the south-west Pacific

Eight aeolid opisthobranch molluscs of the subfamilies Facelininae, Favorininae, and Herviellinae are reported from Tanzanian waters, and two species from Northwestern India. New records from Queensland, Australia greatly extend the range of two species reported from Tanzania. Phidiana militaris (Alder & Hancock) and P. indica (Bergh) are shown to be distinct and a species from New Zealand, originally identified as P. militaris , is shown to be new. P. bourailli (Risbec), previously reported only from New Caledonia, is described from Tanzania, as is a new species of Phidiana. Favorinus japonicus Baba is reported from Tanzania, the first published record outside Japan, a new species of Godiva is described from Tanzania and Queensland, and three new species of Sakuraeolis are described, one from India and two from Tanzania. A new species of Herviella is described from Tanzania.     

On species of genus Lepadella (Eurotatoria:Monogononta:Colurellidae) from North-Eastern India,with remarks on Indian taxa

Ten species of Lepadella Bory de St. Vincent, 1826, including one new species and one new form, are documented from North-Eastern India. Two of these species are new records from this country and six are new reports from N.E. region. Comments are also made on the status and distribution of various Indian taxa.     

广东滩涂经济鱼类寄生吸虫Ⅱ．异肉科和独睾科吸虫──（吸虫纲：复殖目）

本文对广东滩涂经济鱼类寄生吸虫异肉科Ａｌｌｏｃｒｅａｄｉｉｄａｅ（Ｌｏｏｓｅ,１９０２）（Ｓｔｏｓｓｉｃｈ,１９０３）和独睾科ＭｏｎｏｒｃｈｉｉｄａｅＯｄｈｎｅｒ,（１９１１）进行研究,并建立拟履口吸虫属Ｐａｒａｃｒｅｐｉｄｏｓｔｏｍｕｍｇｅｎ．ｎｏｖ．是异肉科,履口亚科Ｃｒｅｐｉｄｏｓｔｏｍｉｎａｅ（Ｄｏｌｌｆｕｓ,１９５１）的新属;长宫吸虫属Ｌｅｎｏｌｏｐａｇｅｎ．ｎｏｖ是独睾科、孤睾亚科Ｌａｓｉｏｔｏｃｉｎａｅ的新属。文中对二新属二新种：金钱鱼拟履口吸虫Ｐａｒａｃｒｅｐｉｄｏｓｔｏｍｕｍｓｃａｔｏｐｈａｇｕｓｉ和惠州长空吸虫Ｌｅｎｏｌｏｐａｈｕｉｚｈｏｕｅｎｓｉｓ分别进行了详细的描述,并对异肉科、履口亚科和属的分类特征进行修正、补充和讨论。     

基因组重排技术在开发新代谢产物中的应用

基因组重排是一种基于原生质体融合,并对原生质进行递推式融合的新型技术。随着基因组重排技术的不断发展和成熟,通过基因组重排获得新代谢产物的例子不断出现,表明该项技术作为新代谢产物开发的途径具有一定的应用前景。在此列举了基因组重排在开发新代谢产物方面的成果,包括基因组重排激活沉默基因产生新代谢产物;基因组重排引入单酶基因产生新抗生素;基因组重排互换基因模块产生杂合抗生素和基因组重排替换前体基因产生新抗生素的例子,并展望了其发展的趋势。     

Revision of the genus Phloeoditica Schedl - with description of two new genera and two new species in Phloeosinini (Coleoptera, Curculionidae, Scolytinae)

The genus Phloeoditica Schedl currently includes four species from Southeast Asia. These species vary substantially in important morphological characters and indicate the existence of multiple genera for these species. A revision based on morphological and in part molecular data resulted in the transfer of Phloeoditica setosa to Pseudoxylechinus the erection of a new genus Asiophilus for Phloeoditica phloeosinoides and a new species Asiophilus macropunctatus from Vietnam. Another new genus with affinities to Phloeoditica is described based on the new species Microditica uniseriata from Thailand. The new genera are included in a revised key to the tribe Phloeosinini.     

鸟类宏观分类和区系地理学研究概述

依据Dickinson,E.C.,主编,2003年出版的"The Howard and Moore Complete Checklist of the Birds of the World"一书和2000～2008年的有关文献的记载,在1958～2008年的50年期间,全世界所描述发表鸟类的新种,计有171种.以每10年中所发表的新种数进行统计比较,以1997～2007年期间所发表的新种为最多;按发现新种所属目级分类阶元的统计比较,以雀形目发现的新种为最多;按地区进行统计比较,以南美洲发现的新种数为最多,非洲中南部地区和太平洋诸岛为次;在中国境内描记的新种有台湾短翅莺Bradypterus alishannensis、峨嵋柳莺Phylloscopus emeiensis、海南柳莺Phylloscopus hainanus、峨嵋鹟莺Seicercus omeiensis、淡尾鹟莺Seicercus soror、弄岗穗鹛Stachyris nonggangensis、四川旋木雀Certhia tianquanensis等7种,其中由中国鸟类学者描记的有四川旋木雀和弄岗穗鹛两种.这说明鸟类的宏观分类研究,时至今日仍有研究的必要和发展空间.种下分类,是探讨同一个物种,随着分布区域的扩大,自然地理环境条件的变化,而产生地区性分布种群的变异,以致新物种形成的途径,是宏观分类学研究一个物种的演化发展.所以是当今鸟类分类研究的热点之一.据统计,1958～2008年的50年间,新描述发表的亚种数,约为1 129亚种.繁殖区域分布较为广泛的种类,所描记的亚种较多.如岛鸫Turdus poliocephalus分化有51亚种之多.中国鸟类的分类与区系地理学研究,大致可分为起步时期(1949年以前)、新中国建立之后的考察及宏观分类研究的总结整理时期(1950～2005)和宏观与微观相结合的发展研究时期(1999年以后)等3个时期.郑作新所出版的<中国鸟类分布名录>和<中国鸟类区系纲要>等专著,是中国鸟类宏观分类和区系地理学研究较为翔实的阶段性总结,为进一步研究奠定了坚实的基础.     

New spies and new combinations in Aphelandra (Acanthaceae) from Ecuador and adjacent Peru

Nine new species and a new variety are described: Aphelandra villonacensis from prov. Loja, A. anderssonii from Loja, A. azuayensis from Azuay, A. rumbecensis from Tumbes, Peru, A. zamorensis from Zamora-Chinchipe, A. loxensis from Loja, A. neillii from Zamora-Chinchipe, A. rosulata var. albinotata from Morona-Santiago, A. albinotata from Esmeraldas, and A. mollissima from San Martin, Peru. The new taxa are described, illustrated, and compared with their closest relatives. Two new combinations are made: Aphelandra modesta and A. rosulata .     

New upper cambrian trilobites from the chopko river section

Six new genera, one new subgenus, and ten new species of trilobites are described from the Upper Cambrian Chopko Formation from a section of the Chopko River, Norilsk District, northwestern part of the Siberian Platform. These include one genus and two species of agnostids and five genera, one subgenus, and eight species of polymerids. The new taxa come from an interval of the section attributed to the upper two-thirds of the Upper Cambrian.     

茎点霉和叶点霉两属的新种及国内新记录种

本文对采自东北地区的115份茎点霉(Phoma)和叶点霉(Phyllosticta)的标本进行分类研究,有新种2个和国内新记录种9个。新种是木瓜生叶点霉(Phyllosticta chaenomelesicola L.Yu et Bai)和草玉铃生叶点霉(Phyllosticta convallaricola L.Yu et Bai)。新种有拉丁文和汉文描述及图。对新记录种作了简要介绍。模式标本保存于沈阳农业大学植保系真菌标本室(HMSAU)。     

Clambidae of Sulawesi with reference to the biogeography of the Sunda Islands (Coleoptera, Eucinetoidea)

Abstract. Eight new species of Clambidae from Sulawesi (Celebes), and two new species and a new subspecies from Borneo and Sumatra are described. The emerging distribution patterns reflect the long-standing isolation of Sulawesi from the rest of the Sunda Islands and from the Asian continent. The clambid fauna of Borneo, Sumatra and the Malayan Peninsula indicates close faunal-historic contacts.     

中国扁蜉科二新种记述(昆虫纲,蜉蝣目)

记述采自中国香港的蜉蝣目扁蜉科2新种。根据稚虫和成虫的形态特征,详细描述了中国新纪录属康扁蜉属Compsoneuria 1新种：大埔浯康扁蜉Compsoneuria taipokauensis sp．nov．。该新种的成虫标本由稚虫在实验室内饲养而成。根据稚虫形态特征,详细描述了高翔蜉属1新种：箭鬃高翔蜉Epeorus sagittatus sp．nov．。     

New catalytic structures from an existing ribozyme

Although protein enzymes with new catalytic activities can arise from existing scaffolds, less is known about the origin of ribozymes with new activities. Furthermore, mechanisms by which new macromolecular folds arise are not well characterized for either protein or RNA. Here we investigate how readily ribozymes with new catalytic activities and folds can arise from an existing ribozyme scaffold. Using in vitro selection, we isolated 23 distinct kinase ribozymes from a pool of sequence variants of an aminoacylase parent ribozyme. Analysis of these new kinases showed that ribozymes with new folds and biochemical activities can be found within a short mutational distance of a given ribozyme. However, the probability of finding such ribozymes increases considerably as the mutational distance from the parental ribozyme increases, indicating a need to escape the fold of the parent.     

Cheilostomatous Bryozoa from Vanuatu

The present account of some Bryozoa from Vanuatu is the first study of reef-flat species from the eastern Coral Sea. Based on samples collected from several shallow water localities on the island of Efate, a total of 92 species is described, including a new family, three new genera and 20 new species. Some of the newly recognized species are the result of taxonomic revision stimulated by these new samples, while others are entirely new to science. Of the new taxa described here, 16 are presently known only from Vanuatu. The total number of species recorded does not accurately represent the true taxonomic diversity of the Cheilostomatida of Vanuatu, and further sampling, at other localities and in other habitats, is needed before it can be reasonably estimated. The fauna is predominantly Indo-West Pacific in character with a high proportion of species apparently known only in the Southwest Pacific.     

新世纪中国菌物新名称发表概况(2000-2020)

2000-2020年间,我国菌物学研究取得了丰硕的成果,在新物种发现、重要类群新分类系统、资源保护与开发利用等多方面取得了重要进展.本文通过对世界菌物名称信息库Index Fungorum、Fungal Names和MycoBank进行数据整理,从中国学者的研究产出和中国的菌物新物种发现的角度展开分析,揭示我国菌物分类...     

A new genus and species of adapid primate from the middle Eocene of Alsace, and a new genus for 'Adapis' ruetimeyeri Stehlin, 1912

A new primate genus and species, represented by isolated teeth, is described from the middle Eocene Alsatian site of Bouxwiller. This new form is closely related to Egerkingen 'Adapis' ruetimeyeri, for which a new genus is proposed because of the important distinctions from type Adapis present in its dentition. Nonetheless, both new genera are closely related to Adapis and Leptadapis.     

中国肥螈属(两栖纲:蝾螈科)一新种——弓斑肥螈Pachytriton archospotus sp. nov.

本文记述两栖纲蝾螈目蝾螈科一新种,新种具肥螈属(Pachytriton)系列特征,与肥螈属已知2种比较有明显区别.如1)本新种与黑斑肥螈(Pachytriton brevipes)相似,体表具黑色小圆斑,但新种具额鳞弓、上鳃骨直而与后者不同;无斑肥螈(Pachytriti on labiatus)(地模标本)虽具额鳞弓,但上鳃骨明显弯曲,体表无黑色小圆斑;2) 新种吻短,吻长小于眼间距,黑斑肥螈吻长大于眼间距,无斑肥螈吻长大于或等于眼间距, 它们的头型明显不同,虽然三者头长均大于头宽,但头长、吻长、眼间距差异显著;3)繁 殖期新种雄体肛区不明显肿胀,肛裂周边中、后部生殖乳突长,而且多,十分醒目;黑斑肥 螈和无斑肥螈繁殖期肛区明显肿胀膨大,生殖乳突较短、且稀.经统计分析三种肥螈的头体长、头长、头宽、吻长和眼间距存在显著差异     

New neurons generated from running are broadly recruited into neuronal activation associated with three different hippocampus-involved tasks

Running increases the formation of new neurons in the adult rodent hippocampus. However, the function of new neurons generated from running is currently unknown. One hypothesis is that new neurons from running contribute to enhanced cognitive function by increasing plasticity in the adult hippocampus. An alternative hypothesis is that new neurons generated from running incorporate into experience-specific hippocampal networks that only become active during running. The purpose of this experiment was to determine if new neurons generated from running are selectively activated by running, or can become recruited into granule cell activity occurring during performance on other behavioral tasks that engage the hippocampus. Therefore, the activation of new 5-6 week neurons was detected using BrdU, NeuN, and Zif268 triple-label immunohistochemistry in cohorts of female running and sedentary adult C57BL/6J mice following participation in one of three different tasks: the Morris water maze, novel environment exploration, or wheel running. Results showed that running and sedentary mice displayed a nearly equivalent proportion of new neurons that expressed Zif268 following each task. Since running approximately doubled the number of new neurons, the results demonstrated that running mice had a greater number of new neurons recruited into the Zif268 induction in the granule cell layer following each task than sedentary mice. The results suggest that new neurons incorporated into hippocampal circuitry from running are not just activated by wheel running itself, but rather become broadly recruited into granule cell layer activity during distinct behavioral experiences. ? 2012 Wiley Periodicals, Inc.