吐哈盆地南缘晚石炭世孢粉组合

本文通过吐哈盆地南缘的LN1井64块孢粉样品的研究,建立了吐哈盆地南缘晚石炭世Crassispora kosankei-Gardenasporites pinnatus-Hamiapollenites chepaiziensis(KPC)孢粉组合,该组合与、腕足类和珊瑚等动物化石共同保存,以具单裂缝、具肋双气囊花粉和单气囊花粉等比较发育为主要特征,组合特征不同于安加拉植物地理区的孢粉组合,也有别于欧美和华夏植物地理区的孢粉组合,同准噶尔盆地西北缘上石炭统(车排子组)孢粉组合基本相似,说明吐哈盆地在晚石炭世属于亚安加拉植物地理区系。     

内蒙古准格尔旗早二叠世早期煤层孢子花粉--古生态个案分析

研究内蒙古准格尔旗黑岱沟太原组上部6号煤层3个煤样中的孢粉,共发现孢粉27属43 种,包括藻类胞囊3属3种,称之为Punctatosporites minutus-Thymospora thiessenii-Laevigatosporites minutus组合.组合以蕨类植物孢子占绝对优势(98%),其中以真蕨类(尤其辉木Psaronius之类)的小单缝孢子(约>50%)为主,种子蕨次之,楔叶类居第三位,乔木石松类孢子和科达类花粉极少.这种情况在华北"太原期"甚至整个二叠纪煤层中不同程度地普遍存在,与华北几个地点已知煤核中植物化石以鳞木类或/和科达类占优势形成鲜明反差,也与欧美区晚石炭世早期煤层孢粉有重要区别,但却与美国晚石炭世晚期(Stephanian)煤层孢粉植物群近似.结合已有原位孢子资料,推论有关母体植物的古生态和华北二叠纪的成煤植物,并尝试解析形成上述反差的原因.     

贺兰山北段呼鲁斯太石炭纪羊虎沟组的牙形刺

首次报道呼鲁斯太晚石炭世羊虎沟组的牙形刺４属９种。根据化石组合面貌,自上而下可建立两个组合,即：Ｓｔｒｅｐｔｏｇｎａｔｈｏｄｕｓ ｐａｒｖｕ－Ｉｄｉｏｇｎａｔｈｏｄｕｓ ｍａｇｎｉｆｉｃｕ组合和Ｎｅｏｇｎａｔｈｏｄｕｓ ｂａｓｓｌｅｒｉ－Ｉｄｉｏｇｎａｔｈｏｄｕｓ ｄｅｌｉｃａｔｕｓ组合,其时代为晚石炭世维斯发期和晚纳缪尔期。为本区石炭纪地层划分对比及盆地格局的研究提供了新的资料。     

新疆准噶尔盆地东北缘孔雀坪剖面二叠纪金沟组孢粉组合及其地层意义

准噶尔盆地东北缘孔雀坪剖面金沟组孢粉组合中Protohaploxypinus,Striatoabieites等具肋双气囊花粉非常发育,类型丰富,达7属32种之多;Cordaitina,Zonalasporites等单气囊花粉分异度较高,但含量较低;少量出现单沟花粉、具肋纹花粉、无肋双气囊花粉和蕨类植物孢子等。所见孢粉类型中约1/2的已知种在新疆北部只见于二叠纪地层中,1/3已知种在晚石炭世至二叠纪地层中均可见到。孢粉组合特征与盆地南缘下二叠统塔什库拉组上部组合相似,地质时代为早二叠世空谷期。     

塔里木盆地棋盘—杜瓦地区早二叠世孢粉植物群及生态环境

新疆塔里木盆地是我国含油气远景极好的内陆盆地。因本区油气资源勘探工作的需要,笔者对盆地西南缘二叠系化石孢粉组合进行了研究。本文根据孢粉组合特征,将原划为晚石炭世塔哈奇组上部的一段地层划入二叠系,并讨论了早二叠世植物群面貌、生态环境特征和孢粉组合中的混生现象。     

塔里木盆地棋盘-杜瓦地区早二叠世孢粉植物群及生态环境

新疆塔里木盆地是我国含油气远景极好的内陆盆地。因本区油气资源勘探工作的需要,笔者对盆地西南缘二叠系化石孢粉组合进行了研究。本文根据孢粉组合特征,将原划为晚石炭世塔哈奇组上部的一段地层划入二叠系,并讨论了早二叠世植物群面貌、生态环境特征和孢粉组合中的混生现象。     

新疆准噶尔盆地芳3井晚白垩世孢粉组合的发现及其地质意义

准噶尔盆地腹部芳3井紫泥泉子组所夹灰色泥岩中产丰富的盘星藻、葡萄藻等藻类、疑源类化石及一定数量的孢粉化石。孢粉化石计75属160种,并首次在新疆地区发现了可靠的鹰粉型化石Aquilapollenites以及在我国主要产于松辽盆地和广东三水盆地上白垩统的“大孢子”化石Balmeisporites,建立Schizaeoisporites grandus-Parcisporites parvisaccus-Liliacidites creticus(GPC)组合。通过对部分孢粉属种已知地质分布的分析以及与国内外部分地区晚白垩世孢粉组合的对比,将GPC组合的时代确定为晚白垩世坎潘期至马斯特里赫特期。根据紫泥泉子组的沉积特点及孢粉组合特征,认为晚白垩世准噶尔盆地应归属西北-东南孢粉植物区,局部层段沉积时期气候比较湿润,孢粉组合具有我国东北孢粉植物区与西北-东南孢粉植物区的过渡特点。     

塔里木盆地二叠系孢粉组合及生物地层学*

首次系统地研究了塔里木盆地二叠系孢子花粉，讨论了盆地各地层分区孢粉组合特征，建立了从早二叠世至早三叠世早期的6个孢粉组合带，阐述了各组合带孢粉学特征。依据对盆地二叠纪孢粉植物群组成分子的分析及其与国内外相关孢粉组合的比较研究，将盆地孢粉植物群分为3个发展阶段，即：早二叠世早、中期的欧美型植物群，早二叠世晚期至晚二叠世早期的安加拉欧美混生型植物群和晚二叠世中、晚期的安加拉型植物群。文中还从孢粉地层学角度论述了沙井子组、杜瓦组和普司格组的地质时代以及二叠/三叠系界线等问题。描述孢粉25属33种（含2新种）。     

新疆三塘湖盆地塘浅3井早侏罗世孢粉组合

本文对在新疆三塘湖盆地塘浅3井701－834m层段发现的孢粉植物群进行了系统的分析研究,共获孢粉45属93种（包括1新种）,疑源类化石5属5种及一个未定类型,组成以Osmundacidites-Piceites-Pinuspollenites-Quadraeculina为主的孢粉组合,根据孢粉组合特征,认为其时代应归为早株罗世晚期,对组合中主要孢粉属种可能的母体植物的生长环境进行分析,推测新疆三塘湖地区在早侏罗世晚期为温带－亚热带气候。     

论新疆北部晚石炭世早期（Bashkirian—Moscovian）具肋花粉优势（GSPD）…

传统观念认为ＧＳＰＤ组合始于中二叠世孔谷期,据新疆等地资料证实此类组合的出现要早得多。准噶尔盆地在Ｐｒｏｆｏｓｕｌｉｎｅｌｌａ－Ｐｓｅｕｄｏｓｔａｆｆｅｌｌａ带之下和相当层位的晚石炭世早期地层中存在两个孢粉组合,即（１）早巴什基尔期巴塔玛依内山组的Ｒｅｍｙｓｐｏｒｉｔｅｓ＾＊ｕａｒｉｃｕｓ－Ｓｔｒｉａｔｏｌｅ－ｂａｃｈｉｔｔｅｓ ｊｕｎｇｇａｒｅｎｓｉｓ组合（Ｐｒｏ－ＧＳＰＤ）和（２）中晚巴什基尔     

Microfossil Assemblages from Upper Carboniferous in Ordos Basin,Northwest China

This paper is resulted from a systematic study of sporo-pollen of Ordos Basin of Northwest China has been found. Single spore assemblage in the Taiyuan Formation contains abundant Pteridophic and Pteridosperm spores and a few Gymnosperm pollen. 11 new species are described. New sporopollen taxa include, Punctatisporites gansuensis, Auritulinasporites ningxiaensis, Gulisporites discersus, Trivolites scabratus, Psomospora anulatus, Gravisporites rugu- laris, Velamisporites breviradidlis, Murospora strialatus, Foveomonoletes foveolatus, Cy- clogranisporites microtriagulus (comb. n.), Cycadopites pachyrrhachis (comb. n.) and Punatatisporites sp., Tantillus sp., Converrucosisporites sp., Columnisporites sp.. and Zono- spheridium reticulatoides and Z. granuloides of Acritarchs. There are some differences between spore assemblages of eastern and western parts of Ordos Basin. Western part is characteristic by more abundance of cingulum spores. The age of the microfossil is considered to be of the Late Carboniferous.     

Petroleum Sporo-Pollen Assemblages and Oil Source Rock of Kuche Seg in Xinjiang

Twenty-eight species (or forms) of fossil pollen and spores referred to 20 genera extracted from the crude oil samples collected from the Kuche Seg of the Talimu Basin in Xinjiang are observed. The conception of the petroleum sporopouen assemblage is further expounded and the classification of the petroleum sporo-pollen assemblage is also tentatively proposed. According to the characteristics of the assemblages, the problem on oil source of the mentioned oil-bearing region is discussed in this paper. The petroleum sporo-pollen assemblage of Jurassic reservoir of Kucbe Seg is composed of Deltoidospora perpusilla, D. gradata, Cyathidites minor, Hymenophyllumsporites deltoidus, Cingulatisporites problematicus, Cibotiumspora paradoxa, Osmundacidites ap., Cycadopites typicus, C. nitidus, Podocarpidites multesimus, Alisporites grandis, Alisporites bilateralis, Parvisaccites sp., Abietineaepollenites microalatus, A. minimus, PinuspoRenites sp., Piceaepollenites sp., etc. These species of spores and pollen have been found from the Jurassic deposits in this region or in the adjacent regions. The petroleum sporo-pollen assemblage only contains the spores and pollen which coincide with those of the reservoir in age. There is not any spore or pollen older or younger than the reservoir. Consequently, it may be referred to a monotonous type of petroleum sporo-pollen assemblage. The petroleum sporo-pollen assemblage of Cretaceous reservoir of this region consists of Deltoidospora perpusilla, Cryathidites minor, Cibotiumspora paradoxa, Schizaeoisporites zizyphinus, Osmundacidites sp., Crcadopites typicus, C. nitidus, Parvisaccites sp., Cedripites cretaceus, Abietineaepollenites microalatus, A. minimus, Pinuspollenites sp., etc. All these species distribute either in the Jurassic deposits or in the Cretaceous deposits in this region or in the adjacent regions. The distribution of Schizaeoisporites zizyphinus and Cedripites cretaceus is usually limited to the Cretaceous deposits. Both the Cretaceous species and the Jurassic species are comprised in the assemblage, so it may be referred to a composite type of petroleum sporo-pollen assemblage. The petroleum sporo-pollen assemblage of Tertiary reservoir comprises Deltoidospora perpusilla, Cyathidites minor, Cibotiumspora paradoxa, Schizaeoisporites zizyphinus, Poly-podiaceaesporites sp., Cycadopites nitidus, Podocarpidites multesimus, Parvisaccites sp., Abietineaepollenites mininus, Pinuspollenites labdacus, Piceaepollenites alatus, Cedripites ovatus, Ephedripites fusiformis, Quercoidites microhenrici, Chenopodipollis multiporatus, C. microporatus, Artemisiaepollenites sdlularis, etc. Besides the Tertiary pollen and spores, the assemblage contains the Jurassic species and the Cretaceous species, and therefore it belongs to a composite type of petroleum sporo-pollen assemblage. The monotonous type of petroleum sporo-pollen assemblage reflects that the oil source rock is coincident with the reservoir rock in age, and the composite type of petroleum sporopollen assemblage shows that the oil source rock is generally older than the reservoir rock. Based on the investigation of the petroleum sporo-pollen assemblages, the oil source rock of the Kuche Seg is considered to be Jurassic Period in age, and the Lower Jurassic Yangxia Formation and the Middle Jurassic Kuzilenuer Formation are considered to be favorable source rock. The conclusion is supported by the result of the organic geochemical investigation.     

Petroleum Sporo-Pollen Assemblage and Oil Source Rock of Yecheng Seg in Xinjiang

Forty-seven species of fossil pollens and spores referred to 33 genera extracted from the crude oil samples collected from the Yecheng Seg of the Talimu Basin in Xinjiang were observed. Based on the investigation of the characteristics of the petroleum sporo-pollen assemblage, the problem on petroleum source of this oil-bearing region is discussed. The principle and method to judge source rock from petroleum sporo-pollen assemblage are specially explained in this paper. The petroleum sporo-pollen assemblage of the Neogene reservoir of the Yecheng Seg consists of Deltoidospora perpusila, Deltoidospora gradata, Cyathidites australis, Cyathidites minor, Biretisporites potoniaei, Dictyophyllidites harrisii, Dictyophyllum rugosum, Cibotiumspora paradoxa, Gleicheniidites senonicus, Gleicheniidites rousei, Undula- tisporites concave, Lycopodiumsporites sp., Osmundacidites wellmanii, Leptolepidites major, Apiculatisporis ovalis, Bennettiteaepollenites lucifer, Cycadopites typicus, Cyeadopites nitidus, Cycadopites minimus, Cycadopites carpentieri, Cycadopites follicularis, Chasmatosporites elegans, Classopollis classoides, Classopollis annulatus, Podocarpidites multesimus, Podocarpidites major, Parvisaccites enigmatus, Quadraeeulina limbata, Caytonipollenites pallidus, PteruchipoUenites thomasii, Alisporites grandis, Alisporites bilateralis, AbietineaepoUenites microalatus, Abietineaepollenites minimus, Pinuspollenites sp., Piceaepollenites sp., Cedripites st)., Ephedripites sp., Eucommiidites troedssonii, Magnolipollis neogenicus, Quercoidites microhenrici, Chenopodipollis multiplex, Artemisiae-pollenites sellularis, etc . This is a typical composite type of petroleum sporo-pollen assemblage, which eomprises the Jurassic species, the Cretaceous species, the Eogene species and the Neogene species of spores an, d pollen. In accordance with the characteristics of the above mentioned petroleum sporopollen assemblage, the source rock of the Yecheng Seg is considered to be Jurassic Period in age, and the black shales and mudstones of the Middle Jurassic Yangye-Taerga Formation are judged to be the most favorable source rocks in the region.     

Pollen and Spores Extracted from Petroleum of Liaohe oil-Field and Their Significance

Twenty-nine species (or forms) of fossil pollen and spores referred to 23 genera extracted from the petroleum samples taken from the Liaohe oil-field are investigated in this paper. Using the above plant microfossils as indicators, the oil source rock of this oil-field are traced. The spores and pollen extracted from the petroleum reserved in the Shahejie Fomation of the Liaohe oil-field are as follows: Pterisisporites undulatus, Osmundacidites wcllmanii, Plicifera decora, Pinuspollenites labdacus f. minor, Abietineaepolle- nites cembraeformis, A. microsibiricus, Cedripites diversus, Keteleeria dubia, Ephcd- ripites cheganicus, Graminidites sp., Liliacidites sp., Quercoiditcs asper, Retitricolporites sp., Chenopodipollis microporatus, Compositoipollenites sp, etc. The following spores and pollen are extracted from the crude oil reserved in the Dongying Formation of the present oil-field: Osmundacidites wellmanii, Plicifera decora, Pinuspollenites labdacus f. minor, Sparganiaccaepollenites sp., Graminidites sp., Liliacidites sp., Chenopodipollis multiporatus, Compositoipollenites sp., Artemisiaepol- lenites sp., etc. Some Fossil Fungi and Algae are observed from the above mentioned petroleum samples. Comparing the spores and pollen extracted from the petroleum of the Shahejie Formation with those of the sporo-pollen complex of the Shahejie Formation, it may be decided that they all came from the deposits of the Shahejie Formation. This character indicates that the oil source rock should coincide with the oil reservoir rock, and both of them belong to the Shahejie Formation which is referred to Early Tertiary Period. By comparison with the sporo-pollen complexes of the Dongying Formation and the Shahejie Formation, most of the pollen and spores found from the petroleum of the Dongying Formation may be found to come from the Dongying Formation, and the rest of them from the underlying Shahejie Formation. Thus it implies that the petroleum reserved in the Dongying Formation should also originate from the Shahejie Formation.     

Six new species of microsporidia of the genus Amblyospora (Microspora: Amblyosporidae) from blood sucking mosquitoes (Diptera: Culicidae) from the west Siberia

Microsporidia of the genus Amblyospora parasiting the adipose body of mosquito larvae of the genus Aedes and Culex has been studied with both light and electron microscopy. Six new species of microsporidia are described based on ultrastructural characteristics of spores and sporogony stages. Amblyospora flavescens sp. n. Mature spores are egg-shaped. The spore wall with three layers, about 165 nm. Exospore is two-membranous. Subexospore is absent. Endospore is electron-translucent. Polaroplast consists of three parts: lamellar, large vesicular, lamellar. The anisofilar polar filament with 10--11 coils (3 1/2 + 2 1/2 + 4-5). Fixed spores are 6.3 +/- 0.1 x 4.24 +/- 0.1 microm. Amblyospora kolarovi sp. n. Mature spores are egg-shaped. The spore wall with three layers, about 265-315 nm. Exospore shapes tucks on the surface of spore. It is two-membranous. Subexospore is quagge, structural. Endospore is electron-translucent. Polaroplast consists of two parts: lamellar and large vesicular. The anisofilar polar filament with 11-13 coils (3 + 8-10). Fixed spores are 5.4-5.6 x 3.5-4.2 microm. Amblyospora orbiculata sp. n. Mature spores are widely egg-shaped. On a back pole there is a small concavity. The spore wall with three layers, about 155 nm. Exospore is shapes tucks on a surface of spore. It is two-membranous. Subexospore is absent. Endospore is electron-translucent. Polaroplast consists of three parts: lamellar, vesicular, lamellar. Polar filament is anisofilar, with 11 1/2 coils (4 1/2 + 1 + 6). Fixed spores are 6.3 +/- 0.1 x x 4.0 +/- 0.1 microm. Amblyospora rugosa sp. n. Mature spores are egg-shaped. On a back pole there is a small concavity. The spore wall with three layers, about 225 nm. Exospore is shapes tucks on a surface of spore. It is two-membranous. Subexospore is quaggy, structural. Endospore is electron-translucent. Polaroplast lamellate. Polar filament is anisofilar, with 17 1/2 coils (3 1/2 + 1 + 13). Fixed spores are 5.3 +/- 0.1 x 3.7 +/- 0.1 microm. Amblyospora undata sp. n. Mature spores are egg-shaped. The spore wall is three-layered, about 220 nm. Exospore is shapes tucks on a surface of spore. It is two-membranous. Subexospore is quaggy, structural. Endospore is electron-translucent. Polaroplast lamellate. The anisofilar polar filament with 8 coils (3 + 5). Fixed spores are 5.0 +/- 0.1 x 3.0 +/- 0.1 microm. Amblyospora urski sp. n. Mature spores have widely oval form. The back pole is concave. The spore wall with three layers, about 280 nm. Exospore is shapes tucks on a surface of spore. It is two-membranous. Subexospore is quaggy, structural. Endospore is electron-translucent. Polaroplast lamellate. Polar filament is anisofilar, with 6 coils (2 + 4). Fixed spores are 4.4 +/- 0.1 x 2.9 +/- 0.1 microm.     

SPORE TETRAD STRUCTURES OF POSSIBLE HEPATIC AFFINITY FROM THE AUSTRALIAN LOWER CARBONIFEROUS

Palynological studies of Early Carboniferous (Viséan) sediments of the Bonaparte Gulf Basin, northwestern Australia, reveal the presence of intact tetrahedral spore tetrads (here described as Sagenotetradites gen. nov.) and, more usually, of their disjunct spore portions which had previously been interpreted as dispersed whole-miospore species. Two species of the new tetrad genus are recognized: S. bonapartensis (Playford) comb, nov., as type species; and S. spiritensis (Playford) comb. nov. The species are distinguished, as originally, on the basis of sculptural attributes of their distal exoexines. When intact, both species share a common internal “binding” element (“Cadiospora abrupta” Playford, 1971) composed of the fused proximal exoexinal faces of all four spores of a given tetrad. Morphological comparisons with modern hepatic spores suggest an alliance of the microfossils with the order Sphaerocarpales. The occurrence of Sagenotetradites in exclusively marine sediments suggests that its parent plants grew in close proximity to the marine depositional basin. Moreover, the morphological attributes of the tetrads would appear to have facilitated dissemination by water.     

Spore assemblages from the Lower Devonian Xujiachong Formation from Qujing,Yunnan, China

Abstract: The Lower Devonian Xujiachong Formation from the vicinity of Qujing City, Yunnan, China is interpreted as a terrestrial‐fluviatile‐lacustrine sequence. It contains important nonmarine biotas including plants, fish and invertebrates. The plants are particularly interesting as they include many endemic taxa. Dispersed spore assemblages have been recovered from the upper part of this formation. The spores are well preserved and of moderate thermal maturity. They are systematically described and four new species erected: Aneurospora xujiachongensis sp. nov., Chelinospora ouyangii sp. nov., Camptozonotriletes? luii sp. nov. and Leiozonospora xichongensis sp. nov. One new combination is proposed: Aneurospora conica (Ouyang and Lu) comb. nov. This is a rare report of a Lower Devonian dispersed spore assemblage from the South China Plate. Indeed, few dispersed spore assemblages of this age are known outside of Euramerica and Northern Gondwana. It is suggested that the Xujiachong Formation spore assemblages can all be equated to the polygonalis‐emsiensis Spore Assemblages Biozone (PE SAB) of Richardson and McGregor (1986) indicating an early (but not earliest) Pragian to ?earliest Emsian age. However, caution is urged, because biostratigraphical interpretation is difficult owing to distinct differences between dispersed spore assemblages from South China and Euramerica/Northern Gondwana. This almost certainly reflects palaeophytogeographical variation and regional endemism among early land plant floras on widely separated land masses. Palynofacies analysis supports a nonmarine origin for the deposits of the Xujiachong Formation, with the very rare marine palynomorphs that were encountered interpreted as reworked.     

A new genus Gadimyxa with three new species (Myxozoa, Parvicapsulidae) parasitic in marine fish (Gadidae) and the two-host life cycle of Gadimyxa atlantica n. sp

The myxozoans Gadimyxa atlantica n. sp. and G. sphaerica n. sp., and G. arctica n. sp. (Myxozoa, Parvicapsulidae), are described from Gadus morhua L. and Arctogadus glacialis (Peters) (Gadidae), respectively. They develop coelozoic in bisporic plasmodia in the urinary systems. Two morphological forms of spores were found in all 3 species, i.e., wide and (sub)spherical forms. Both spore types are bilaterally symmetrical along the suture line. The wide spores, semicircular in frontal view and elliptical in apical view, have 2 spherical polar capsules, which open in the sutural or median plane mid on the flat side of the spore. Mean widths of the wide spores of G. atlantica, G. sphaerica, and G. arctica are 7.5, 10.0, and 10.0 microm, respectively. The older, more thick-walled, (sub)spherical spores with binucleate sporoplasm are 8.0, 5.3, and 7.3 microm in mean width, respectively. The mean diameters of the polar capsules of (sub)spherical spores are 2.4, 1.7, and 2.2 microm, respectively. The (sub)spherical forms of Gadimyxa are most similar to Ortholinea within the Ortholineidae, but they differ in the development of the spores and in the arrangement of the polar capsules. The polychaetes Spirorbis spp. (Spirorbidae) act as invertebrate hosts of G. atlantica. The previously described actinospores of the tetractinomyxon type develop to myxospores in Gadus morhua within 8 wk. This is the second known myxozoan 2-host life cycle in the marine environment. Phylogenetic analyses based on partial small subunit rDNA sequences places Gadimyxa spp. among Parvicapsula spp. in the Parvicapsulidae.     

Revision of the Agathidinae (Hymenoptera, Braconidae) of Vietnam, with the description of forty-two new species and three new genera

The species of seventeen genera of Agathidinae (Braconidae) from Vietnam are revised: Agathis Latreille, 1804, Bassus Fabricius, 1804; Biroia Szépligeti, 1900; Braunsia Kriechbaumer, 1894; Camptothlipsis Enderlein, 1920; Coccygidium de Saussure, 1892; Coronagathis gen. n. (type species: Coronagathis cornifera sp. n.); Cremnops Foerster, 1862; Disophrys Foerster, 1862; Earinus Wesmael, 1837; Euagathis Szépligeti, 1900; Gyragathis gen. n. (type species: Gyragathis quyi sp. n.), Gyrochus Enderlein, 1920; Lytopylus Foerster, 1862; Therophilus Wesmael, 1837; Troticus Brullé, 1846, and Zelodia gen. n. (type species: Zelomorpha varipes van Achterberg & Maetô, 1990). Keys to the Vietnamese species are given.Sixty-five species are recognised, of which twelve species are newly recorded for Vietnam: Bassus albifasciatus (Watanabe, 1934), Coccygidium angostura (Bhat & Gupta, 1977), Cremnops atricornis (Smith, 1874), stat. n., Disophrys erythrocephala Cameron, 1900, Gyrochus yunnanensis Wang, 1984, Lytopylus romani (Shestakov, 1940), comb. n., Therophilus festivus (Muesebeck, 1953), comb. n., Therophilus javanus (Bhat & Gupta, 1977), comb. n., Therophilus lienhuachihensis (Chou & Sharkey, 1989), comb. n., Therophilus marshi (Bhat & Gupta, 1977), comb. n., Zelodia absoluta (Chen & Yang, 1998), comb. n. and Zelodia longidorsata (Bhat & Gupta, 1977), comb. n.Forty-two species are new to science: Agathis citrinisoma sp. n., Bassus albobasalis sp. n., Bassus albozonatus sp. n., Biroia soror sp. n., Braunsia bicolorata sp. n., Braunsia devriesi sp. n., Braunsia maculifera sp. n., Braunsia nigrapiculata sp. n., Braunsia pumatica sp. n., Camptothlipsis hanoiensis sp. n., Coronagathis cornifera sp. n., Earinus aurantius sp. n., Earinus brevistigmus sp. n., Euagathis flavosoma sp. n., Disophrys maculifera sp. n., Disophrys quymanhi sp. n., Disophrys rhinoides sp. n., Gyragathis quyi sp. n., Therophilus annuliferus sp. n., Therophilus cattienensis sp. n., Therophilus contrastus sp. n., Therophilus crenulisulcatus sp. n., Therophilus depressiferus sp. n., Therophilus elongator sp. n., Therophilus levisoma sp. n., Therophilus marucae sp. n., Therophilus mellisoma sp. n., Therophilus nigrolineatus sp. n., Therophilus nuichuaensis sp. n., Therophilus parasper sp. n., Therophilus planifrons sp. n., Therophilus punctiscutum sp. n., Therophilus robustus sp. n., Therophilus rugosiferus sp. n., Therophilus scutellatus sp. n., Troticus alloflavus sp. n., Troticus giganteus sp. n., Zelodia albobasalis sp. n., Zelodia anginota sp. n., Zelodia bicoloristigma sp. n., Zelodia brevifemoralis sp. n. and Zelodia flavistigma sp. n.The following new synonyms are proposed: Euagathis nigrithorax Bhat & Gupta, 1977, Euagathis variabilis Enderlein, 1920, Euagathis variabilis var. tibialis Enderlein, 1920, Euagathis variabilis var. melanopleura Enderlein, 1920 and Euagathis variabilis var. sucarandana Enderlein, 1920 with Euagathis abbotti (Ashmead, 1900); Euagathis jinshanensis Chen & Yang, 2006 and Euagathis sharkeyi Chen & Yang, 2006, with Euagathis forticarinata (Cameron, 1899). The genus Amputostypos Sharkey, 2009, is synonymised with Coccygidium de Saussure, 1892, syn. n.The following new combinations are given: Bassus subrasa (Enderlein, 1920), comb. n., Gyragathis angulosa (Bhat & Gupta, 1977), comb. n., Lytopylus romani (Shestakov, 1940), comb. n., Therophilus annulus (Chou & Sharkey, 1989), comb. n., Therophilus asper (Chou & Sharkey, 1989), comb. n., Therophilus cingulipes (Nees, 1812), comb. n., Therophilus daanyuanensis (Chen & Yang, 2006), comb. n., Therophilus fujianicus (Chen & Yang, 2006), comb. n., Therophilus javanus (Bhat & Gupta, 1977), comb. n., Therophilus lanyuensis (Chou & Sharkey, 1989), comb. n., Therophilus luzonicus (Bhat & Gupta, 1977), comb. n., Therophilus muesebecki (Bhat & Gupta, 1977), comb. n., Therophilus rudimentarius (Enderlein, 1920), comb. n., Therophilus similis (Bhat & Gupta, 1977), comb. n., Therophilus sungkangensis (Chou & Sharkey, 1989), comb. n., Therophilus tanycoleosus (Chen & Yang, 2006), comb. n., Therophilus tonghuaensis (Chen & Yang, 2006), comb. n., Therophilus tongmuensis (Chen & Yang, 2006), comb. n., Therophilus transcasperatus (Chen & Yang, 2006), comb. n., Troticus latiabdominalis (Bhat, 1978),comb. n., Zelodia absoluta (Chen & Yang, 1998), comb. n., Zelodia achterbergi (Chen & Yang, 2006), comb. n., Zelodia albopilosella (Cameron, 1908), comb. n., Zelodia chromoptera (Roman, 1913), comb. n., Zelodia nihonensis (Sharkey, 1996), comb. n., Zelodia cordata (Bhat & Gupta, 1977), comb. n., Zelodia diluta (Turner, 1918), comb. n., Zelodia dravida (Bhat & Gupta, 1977), comb. n., Zelodia exornata (Turner, 1918), comb. n., Zelodia longidorsata (Bhat & Gupta, 1977), comb. n., Zelodia longiptera (Yang & Chen, 2006), comb. n., Zelodia maculipes (Cameron, 1911), comb. n., Zelodia nigra (Bhat & Gupta, 1977), comb. n., Zelodia philippinensis (Bhat & Gupta, 1977), comb. n., Zelodia reticulosa (Yang & Chen, 2006), comb. n., Zelodia quadrifossulata (Enderlein, 1920), comb. n., Zelodia ruida (Sharkey, 1996), comb. n., Zelodia similis (Bhat & Gupta, 1977), comb. n., Zelodia penetrans (Smith, 1860), comb. n. and Zelodia varipes (van Achterberg & Maetô, 1990), comb. n.     

The taxonomic status of <Emphasis Type="Italic">Opegaster</Emphasis> Ozaki, 1928 and the description of four new species of <Emphasis Type="Italic">Opecoelus</Emphasis> Ozaki, 1925 (Digenea: Opecoelidae) from marine teleosts in Australian waters

The similarities between Opecoelus Ozaki, 1925, Coitocaecum Nicoll, 1915, Opegaster Ozaki, 1928 and Paropecoelus Pritchard, 1966 and the difficulty of separating Opecoelus and Opegaster are discussed. It is proposed that Opegaster be reduced to synonymy with Opecoelus and the diagnosis of the latter amended to accommodate both forms. Four new species of Opecoelus are described from marine teleosts in Australian waters. These are Opecoelus woolcockae n. sp. from Acanthopagrus butcheri and A. australis from off South Australia, New South Wales and southern Queensland, O. pomatomi n. sp. from Pomatomus saltatrix off New South Wales, O. crowcrofti n. sp. from Atherinomorus ogilbyi off southern Queensland and O. queenslandicus n. sp. from Apogon fasciatus off southern Queensland. The following new combinations are formed: Opecoelus gonorhynchi (Gavrilyuk, 1979) n. comb., O. elongatus (Yamaguti, 1959) n. comb., O. pentadactylus (Manter, 1940) n. comb., O. apogonichthydis (Yamaguti, 1938) n. comb., O. cameroni (Caballero & Caballero, 1969) n. comb., O. dendrochiri (Yamaguti, 1970) n. comb., O. hawaiiensis (Yamaguti, 1970) n. comb., O. jamunicus (Srivastava, 1968) n. comb., O. longivesiculus (Yamaguti, 1952) n. comb., O. mastacembalii (Harshey, 1937) n. comb., O. mehrii (Harshey, 1937) n. comb., O. synodi (Manter, 1947) n. comb., O. tamori (Yamaguti, 1938) n. comb., O. bothi (Yamaguti, 1970) n. comb., O. caulopsettae (Manter, 1954) n. comb., O. beliyai (Pande, 1937) n. comb., O. brevifistulus (Ozaki, 1928) n. comb., O. cryptocentri (Yamaguti, 1958) n. comb., O. dactylopteri (Yamaguti, 1970) n. comb., O. dermatogenyos (Yamaguti, 1970) n. comb., O. ditrematis (Yamaguti, 1942) n. comb., O. gobii (Yamaguti, 1952) n. comb., O. hippocampi (Shen, 1982) n. comb., O. iniistii (Yamaguti, 1970) n. comb., O. lobulus (Wang, 1977) n. comb., O. macrorchis (Yamaguti, 1938) n. comb., O. parapristipomatis (Yamaguti, 1934) n. comb., O. pritchardae (Overstreet, 1969) n. comb., O. syngnathi (Yamaguti, 1934) n. comb., O. lutiani (Bravo-Hollis & Manter, 1957) n. comb., O. ovatus (Ozaki, 1928) n. comb., O. plotosi (Yamaguti, 1940) n. comb. and O. rectus (Ozaki, 1928) n. comb.; all the new combinations were previously species of Opegaster.