广西鲤鱼类一新属三新种

记述采自广西河池地区的鲤科鱼类一新属三新种。新属近金线鳃属Anchicyclocheilusgen.nov.的侧线鳞与体鳞一致可区别于侧线鳞大于体鳞的金线鳃属Sinocycloheilus。模式种半盲近金线鳃Anchicyclocheilus halfibindus,sp.nov.的背鳍分枝鳍条有9条表明其原始性;新属另一新种高肩近金线鲃Anchicyclolocheilus altishoulderus,sp.nov.以背鳍分枝鳍条7根和有明显额突等特征区别于半盲近金线鲃。第三个新种宜山金线鲃Sinocyclocheilus yishanensis,sp.nov.的背鳍不分枝鳍条纤细、柔软、光滑无锯齿;口亚上位;鳞大、鳞比2.1;侧线鳞52-54等区别于软鳍金线鲃S.malacopterus Chu et Cui。     

A new Eocene catostomid (Teleostei: Cypriniformes) from northeastern China and early divergence of Catostomidae

A new Eocene catostomid genus and species, Plesiomyxocyprinus arratiae, is described from Huadian, Jilin Province, northeastern China. The materials include a nearly complete skeleton, dozens of pharyngeal bones with teeth, and a number of disarticulated bones. The new articulated specimen is large-sized and deep-bodied, with an estimated standard length of ca. 300 mm and body depth of 156 mm or about half of its standard length. The assignment of the fish to the Catostomidae is based on its falciform pharyngeal bone with one row of numerous (more than 50) compressed teeth, and the bone is much smaller than in cyprinids, especially given the size of the fish. The new fish distinguishes itself from all known catostomids (both extinct and extant) in its long anal fin with four unbranched and 17–18 branched rays, and its extremely short caudal peduncle that is only about one fourth of its depth. Plesiomyxocyprinus arratiae resembles the Eocene-Oligocene transpacific-distributed Amyzon in many general skeletal characters. However, it shows a few characters uniquely shared with the Recent catostomid Myxocyprinus asiaticus. Those include a very long dorsal fin with about 50 branched fin rays, the end of dorsal fin rays being close to the caudal fin base, and anal rays stretching posteriorly beyond the base of caudal fin. It is the first fossil catostomid that shows a close relationship to the endemic Myxocyprinus now living in the Yangtze River and Minjiang River, China. The discovery of Plesiomyxocyprinus arratiae, along with two previously described possible catostomid genera Jianghanichthys and Vasnetzovia, may indicate that the divergence of the Catostomidae started much earlier, in the middle Eocene or earlier, on the western side of the Pacific than on its eastern side. Supported by National Natural Science Foundation of China (Grant No. 40432003, J0630965), Cypriniformes Tree of Life under the U.S. National Science Foundation to R. Mayden (Grant No. EF0431326), and Ecocarp Project (European Commission, INCO-DEV Programme) (Grant No. ICA4-CT-2001- 10024)     

贵州独山星朗地区早石炭世异珊瑚

描述贵州独山星朗早石发世大塘期异珊瑚新属１个，新种１８个。本区异珊瑚类不仅有对环境专属性较强的一些异珊瑚新属种。还方对环境专属性较小的一些广布性属种。它们与贵州威宁、广西隆林的异珊瑚化二相比．普遍外壁厚，隔壁显著加厚及横板密集，说明这些异珊瑚是在水动力条件较强的开阔台地生活。     

吉林中部早二叠世皱纹珊瑚一新属Huadianophyllum

本文描述了产于吉林中部的皱纹珊瑚1新属2新种。这些珊瑚化石除具皱纹珊瑚的一般特征之外,还具有六射珊瑚的特点。它对研究六射珊瑚与皱纹珊瑚之间演化关系具有重要意义。     

The first fossil of dasycerine rove beetle (Coleoptera: Staphylinidae) from Upper Cretaceous Burmese amber: Phylogenetic implications for the omaliine group subfamilies

The enigmatic staphylinid subfamily Dasycerinae consists of only 17 species within a single extant genus Dasycerus, but it is easily distinguished from other rove beetles by overall, latridiid beetle-like body and extremely slender, verticillate antennae. Direct fossil evidence is lacking for this group. Here, I describe the first fossil of this peculiar subfamily, Protodasycerus aenigmaticus gen. and sp. n., from the Upper Cretaceous Burmese amber. Despite considerable external similarities to extant dasycerine species, this new genus possesses several important morphological differences: a much smaller body size (ca. 1.1 mm), narrowly elongate antennomeres 1 and 2, not strongly transverse metaventrite, elytra striate but not tricostate, and truncate posterior margin of the elytra exposing four abdominal tergites dorsally. The new finding of a Cretaceous representative of the Dasycerinae helps elucidate the origin and early evolution of the omaliine group subfamilies, implying rather close similarities between the Dasycerinae and the monobasic subfamily Neophoninae. Discovery of P. aenigmaticus suggests a rather ancient origin of the subfamily by the Upper Cretaceous.     

A remarkable new genus of basal snakeflies (Insecta: Raphidioptera: Priscaenigmatomorpha) from the Early Cretaceous of China

Chrysoraphidia relicta gen. et sp. nov. is described from the Early Cretaceous (Barremian) of the Yixian Formation, Liaoning Province, China. Its venation is characterized by a mixture of character states that occur mainly in the Neuroptera and Raphidioptera. The assignment of Chrysoraphidia gen. nov. to Raphidioptera is supported by the presence of its distinct pterostigma and the configuration of the wing vein ‘subcosta anterior’. It is interpreted as the first record of a group of basal snakeflies (Priscaenigmatomorpha) from the Cretaceous of Asia, hitherto known only from the Early Jurassic of Europe.     

A New Subfamily of Aphids (Hemiptera,Aphidomorpha) from the Early Cretaceous Lebanese Amber with a Description of the Oldest Apterous Morphs

<正>Aphids are marked by their high polymorphism,but species reported from the Early Cretaceous are known only from alate morphs.The discovery of an apterous adult morph in Lebanese amber and a larva of the same species are very important for the understanding of both the morphological and biological evolution of this insect group at the very early stage of development.Gondvanoaphis estephani new subfamily,new genus and species of the recent aphids family Thelaxidae is described.The characters of the new genus in respect to other genera placed in Thelaxidae are reviewed.The palaeoecological and palaeogeographical data concerning Gondvanoaphis new genus are also discussed.     

A new reticulated beetle (Coleoptera: Cupedidae) with aedeagus preserved from mid-Cretaceous amber of Myanmar

A rare archaic beetle, Barbaticupes combertiae n. gen. n. sp. (Insecta: Coleoptera: Archostemata: Cupedidae) is described from mid-Cretaceous burmite from northern Myanmar. This beetle's distinctive form includes dense setae (small hairs) and protuberances on the head and merging rows of window cells on the elytra (wing cases). It is the first true or typical reticulated beetle (cupedine) to be found in Burmese amber displaying male genitalia.     

Ceuthonoe nezhai gen. et sp. n. (Polynoidae: Polynoinae) commensal with sponges from Weijia Guyot,western Pacific

Ceuthonoe, a new genus with type species C. nezhai sp. n. commensal with euplectellid glass sponge (Hexactinellida: Euplectellidae), is described and illustrated, based on the material collected from Weijia Guyot, western Pacific. The new genus is distinguished by a combination of characters: body with 32 segments; 14 pairs of elytra; prostomium with prominent cephalic peaks and facial tubercle; aciculae and chaetae on tentaculophores; biramous parapodium, each ramus with a long aciculum penetrating epidermis, without supra-or subacicular process; and noto- and neurochaetae with unidentate tips. Ceuthonoe gen. n. is mostly silimar to genera of Polynoinae in morphology. However the phylogenetic analysis based on cytochrome c oxidase subunit I, 16S, 18S, and 28S genes suggested that this new genus was separated from the main branch of Polynoinae. The study also discussed the genera related to the new genus.     

多鳞鱚Sillago sihama Forskál外周血细胞的显微结构观察

对多鳞鱚(Sillago sihama Forskál)Wright染色的血涂片进行显微观察。结果表明多鳞鱚外周血细胞可区分为红细胞、血栓细胞、淋巴细胞、嗜中性粒细胞、嗜酸性粒细胞和单核细胞等6种细胞,未发现嗜碱性粒细胞。血栓细胞、淋巴细胞、嗜中性粒细胞和单核细胞在白细胞中所占比例分别为47.5%、32.5%、12.5%和7.5%,嗜酸性粒细胞在整个实验中只发现7个。并发现较多未成熟的红细胞以及少量正在分裂的红细胞和晚幼嗜中性粒细胞。