A review of Sulcospira (Gastropoda: Pachychilidae) from China,with description of two new species

ABSTRACT

A revision of Chinese freshwater Sulcospira gastropods is presented here based on analysis of the morphological characteristics and partial sequences of the mitochondrial genes 16S rRNA and cytochrome c oxidase subunit I (COI). A total of three species was reported in China by earlier authors, including Sulcospira hainanensis, S. hunanensis and S. paludiformis. In this study, two new species of Sulcospira are described from Hunan Province and Guangxi Zhuang Autonomous Region based on morphological and molecular evidence.     

A new species of Metacyclops Kiefer, 1927 (Copepoda,Cyclopidae, Cyclopinae) from the Chihuahuan desert,northern Mexico

A new species of the freshwater cyclopoid copepod genus Metacyclops Kiefer, 1927 is described from a single pond in northern Mexico, within the binational area known as the Chihuahuan Desert. This species belongs to a group of Metacyclops species with a 3443 spine formula of swimming legs. It is morphologically similar to Metacyclops lusitanus Lindberg, 1961 but differs from this and other congeners by having a unique combination of characters, including a caudal rami length/width proportion of 3.5–3.8, a innermost terminal seta slightly longer than the outermost terminal seta, intercoxal sclerites of legs 1-4 naked, a strong apical spine of the second endopodal segment of leg 1 and one row of 6-8 small spinules at the insertion of this spine. The finding of this species represents also the first record of the genus in Mexico and the third in North America, where only two other species, Metacyclops gracilis (Lilljeborg, 1853)and Metacyclops cushae Reid, 1991 have been hitherto reported. This is also the first continental record of a species of Metacyclops from an arid environment in the Americas. This species appears to be endemic to the Chihuahuan Desert, thus emphasizing the high endemicity of this area.     

Two new species of Paracyclops (Copepoda: Cyclopoida,Cyclopidae) from Africa

Paracyclops longispina n. sp. and Paracyclops altissimus n. sp. are described. New characters derived from detailed examination of body and limb ornamentation are used to differentiate them from other Paracyclops species. Paracyclops longispina n. sp. resembles Paracyclops fimbriatus (Fischer, 1853) and Paracyclops imminutus Kiefer, 1929. It differs from the former by the presence of a well-developed spinular row near the base of the inner setae on the antennal coxobasis in both sexes, and from the latter in the structure of the seminal receptacle and the position of the mid-distal spinular row on the posterior surface of the coxa of leg 1. Paracyclops altissimus n. sp. can be distinguished from other members of genus mainly by the structure of the seminal receptacle and leg 5. This revised version was published online in July 2006 with corrections to the Cover Date.     

A new Pseudophoxinus (Teleostei,Cyprinidae) species from Asi River Drainage (Turkey)

Pseudophoxinus turani sp. n. is described from the İncesu Spring (Hassa-Hatay) drainage of Asi River, Turkey. It is distinguished from other Eastern Mediterranean Region Pseudophoxinus species by a combination of characters: lateral line incomplete, with 12–25 (commonly 16–21) perforated scales and 38–46+2-3 scales in lateral series (commonly 41–44+2-3); 10–11 scale rows between the lateral line and dorsal-fin origin; 3–4 scale rows between the lateral line and the pelvic–fin origin; dorsal fin with 7½ branched rays; anal fin commonly with 7½ branched rays; 8-11gill rakers on the first branchial arch; dorsal profile markedly convex with marked hump at the nape, ventral profile less convex than dorsal profile; a small, irregular, black blotch on the base of the caudal fin; mouth terminal, with slightly distinct chin, its corner not reaching vertical through anterior margin of eye; snout somewhat long, with rounded tip; and its length greater than eye diameter.     

Stylet formation in Anisus vortex (Linnaeus, 1758) (Gastropoda: Planorbidae)

Soldatenko, E.V., Shatrov A.B. and Shumeev, A.N. (2010). Stylet formation in Anisus vortex (Linnaeus, 1758) (Gastropoda: Planorbidae). —Acta Zoologica (Stockholm) 92 : 377–382. The detailed stylet morphology and stylet formation during postembryonic development in the pulmonate mollusk Anisus vortex (Linnaeus, 1758) are described using scanning electron microscopy (SEM) and histological methods. The stylet begins to develop in the lumen of the copulatory apparatus and then assumes its final position inside the penial sac. The developing stylet lying between two epithelial layers is undergoing chitinization mediated by secretion of the secretory epithelium of the penial sac that completes on the 80–120th day after hatching of mollusks from the egg masses. The stability of the characters of stylet morphology and their significance for the systematics of Planorbidae are discussed.     

A new species of Tropodiaptomus (Gopepoda, Calanoida) from Lake Turkana, Kenya

Tropodiaptomus turkanae sp. nov. is described from Lake Turkana (formerly Lake Rudolph), Kenya. After years of confusion with T. banforanus , the identity of this taxon as an endemic of Lake Turkana is established. The species is described, and its relationship with other Tropodiaptomus species discussed.     

The genus Antillophos Woodring, 1928 (Gastropoda: Buccinidae) from the China seas,with description of a new species

The species of genus Antillophos Woodring, 1928 Woodring, W.P. (1928) Miocene Mollusks from Bowden, Jamaica. 2. Gastropods and Discussion of Results. Contributions to the Geology and Paleontology of the West Indies. Carnegie Institute of Washington, Washington D.C. [Google Scholar] from the China seas are studied. Six species, Antillophos liui n. sp., Antillophos lucubratonis Fraussen & Poppe, 2005 Fraussen, K. & Poppe, G.T. (2005) Revision of Phos and Antillophos (Buccinidae) from the Central Philippines. Visaya 1, 76–115. [Google Scholar], Antillophos monsecourorum Fraussen & Poppe, 2005 Fraussen, K. & Poppe, G.T. (2005) Revision of Phos and Antillophos (Buccinidae) from the Central Philippines. Visaya 1, 76–115. [Google Scholar], Antillophos pyladeum (Kato, 1995 Kato, S. (1995) Discussion of the genus Phos. Hitaciobi 70, 15–20. [Google Scholar]), Antillophos roseatus (Hinds, 1844 Hinds, R.B. (1844) Mollusca. In: Hinds, R.B. (Ed.) The Zoology of the Voyage of H.M.S. Sulphur During the years 1836–1842. 2. Smith, Elder and Co., London, pp. 1–72. [Google Scholar]) and Antillophos sp., are described and illustrated.

http://zoobank.org/urn:lsid:zoobank.org:pub:51481997-A841-4F37-8E15-B753DC99CB4D     

A nomenclator of extant and fossil taxa of the Valvatidae (Gastropoda,Ectobranchia)

A compilation of all supra- and (infra-) specific taxa of extant and fossil Valvatidae, a group of freshwater operculate snails, is provided, including taxa initially described in this family and subsequently classified in other families, as well as names containing errors or misspellings. The extensive reference list is directly linked to the available electronic source (digital view or pdf-download) of the respective papers.     

A new species of Sesara Albers, 1860 from northeastern Thailand (Stylommatophora: Helicarionidae)

Sesara triodon n.sp. is described from the Phu Pha Lom limestone area in Loei, northeastern Thailand. It possesses a small and depressed–conoid, transparent shell with a shiny external surface. The aperture possesses three apertural teeth, in contrast to other Thai species, Sesara parva Solem, 1966 (two teeth) and Sesara megalodon Blanford, 1902 (four teeth). The genital system of the new species has some distinctive characters, including a vagina longer than the free oviduct, and the epiphallic retractor caecum is rounded and bulbous. The radula has 104 rather straight rows of teeth, with each row having74–81 teeth. This is the easternmost record of the genus Sesara in Thailand.

http://zoobank.org/urn:lsid:zoobank.org:pub:52EF0AB6-1E17-4B96-BC6F-4257FE5FBF00     

A new species of Ainudrilus (Tubificidae) from South Georgia,and other subantarctic freshwater oligochaetes

The freshwater oligochaetes of the subantarctic islands are reviewed and new records are given. Ainudrilus dartnalli sp.n. (subfamily Rhyacodrilinae) is described from freshwater sites on South Georgia (South Atlantic Ocean). It differs from the closely related, southwest Australian, A. nharna Pinder & Brinkhurst, by its longer clitellum, the longer upper teeth of its ventral somatic chaetae, its straighter and fewer penial chaetae, and by the proportions of its spermathecae. Range extensions are given for two widespread naidids, Nais variabilis Piguet and N. communis Piguet, from the Falkland Islands (S. Atlantic). Moreover, new material of N. elinguis Müller is recorded from Macquarie Island (Southern Ocean, SW of New Zealand).     

Eight new apterous Lathrobium species (Coleoptera,Staphylinidae) from Sichuan,Southwest China

Eight apterous species of the paederine genus Lathrobium Gravenhorst, 1802 from the Chinese province Sichuan are described, illustrated, and distinguished from closely related and/or geographically close congeners: Lathrobium erlangense Peng & Li sp. n. (Erlang Shan), Lathrobium blandum Peng & Li sp. n. (Labahe N. R.), Lathrobium yelense Peng & Li sp. n. (Yele), Lathrobium obscurum Peng & Li sp. n. (Yele), Lathrobium yinziweii Peng & Li sp. n. (Yele), Lathrobium illustre Peng & Li sp. n. (Yele), Lathrobium micangense Peng & Li sp. n. (Micang Shan) and Lathrobium agglutinatum Assing & Peng sp. n. (Qingcheng Shan). The total number of described Lathrobium species from Sichuan now stands at 39, that of mainland China at 165.     

Notholca dongtingensis (Rotifera: Monogononta: Brachionidae), a new species from Dongting Lake,China

Notholca dongtingensis n.sp. was found in the second largest lake of China, Dongting Lake. It is related to Notholca labis Gosse, 1887 and N. kozhovi Vassilijewa & Kutikova, 1969. Its main distinguishing taxonomic features are a square-oval lorica, very short anterior spines, anterior lateral spines curving outwards and protrusile posterior margin of the ventral plate. This revised version was published online in July 2006 with corrections to the Cover Date.     

中国广东优树甲属一新种(鞘翅目:拟步甲科)

记述采自中国广东的优树甲属1新种:高氏优树甲Uenostrongylium gaoi Lin&Yuan sp.nov.,该种因鞘翅刻点上缘具小颗粒而与浙江的粗皱优树甲Uenostrongylium scaber Yuan&Ren,2018相似.文中提供了新种的整体图和特征图.     

A new species of Stomatostemma (Periplocaceae) from Mozambique, Africa

VENTER, H.J. T. & FIELD, D. V., 1989. A new species of Stomatostemma (Periplocaceae) from Mozambique, Africa. A new species of Stomatostemma is described from Mozambique. 11 is [he second species distinguished in the genus Stomatostemma N.E. Br., the other being S. monteiroae (Oliv.) N.E. Br., which was also described from Mozambique. The new species is distinguished from.V. monteiroae by being a virgate shrub, by the pendulous terminal branches and inflorescences, by the long and frail peduncles and pedicels and by the long clavate corona lobes.     

中国刺背三节叶蜂属一新种暨分种检索表(膜翅目:三节叶蜂科)

记述中国浙江丽水市九龙国家湿地公园分布的刺背三节叶蜂属1新种:丽水刺背三节叶蜂Spinarge lishui Liu,Li&Wei sp.nov..给出了刺背三节叶蜂属世界分种团和中国种类检索表.     

A new species and new record of the leafhopper genus Seriana Dworakowska (Hemiptera, Cicadellidae, Typhlocybinae) from China

Seriana menglaensissp. n. (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini) is described and illustrated from Southwest China. Seriana equata (Singh, 1969) is recorded for the first time from China.     

中国广西绿蟹蛛属1新种(蜘蛛目:蟹蛛科)

作者在进行中国广西大明山无脊椎动物资源调查研究时,发现了蜘蛛目蟹蛛科绿蟹蛛属1新种,命名为饼绿蟹蛛Oxytate placentiformis sp.nov..所有标本均保存在河北大学生命科学学院.文中测量单位为mm.饼绿蟹蛛,新种Oxytate placentiformis sp.nov.(图1～6)正模♂,广西南宁大明山自然保护区浣纱瀑布,2011-05-23,王英楠采.鉴别特征 在分布于亚洲大陆的本属种类中,本新种与冲绳绿蟹蛛O.hoshizuna Ono,1978,钳绿蟹蛛O.forcipata Zhang&Yin,1998和小头绿蟹蛛O.capitulata Tang&Li,2009外形和触肢器十分相似,但具有以下不同:本种触肢胫节突长,端部弯曲呈"7"字形,而冲绳绿蟹蛛O.hoshizuna的胫节突末端强烈弯曲呈钩状,钳绿蟹蛛O.forcipata胫节突末端呈钳状,小头绿蟹蛛O.capitulata Tang&Li,2009胫节突末端弯曲呈鸟头状.词源学 本新种以雄蛛背甲的形状而拟定.正模 雄蛛体长7.75:头胸部长2.81,宽2.40; 腹部长5.20,宽1.38.背甲黄褐色,中窝纵向线状,颈沟和放射沟不明显; 背甲圆形,头区轻微隆起.8眼2列,背面观两眼列均后凹,后眼列较宽,前侧眼和后侧眼突出; 前中眼直径0.08,前侧眼直径0.10,后中眼直径0.08,后侧眼直径0.10;前中眼距0.13,前中侧眼距0.10,后中眼距0.10,后中侧眼距0.30; 中眼域梯形,前边大于后边(0.30:0.25).螯肢黄褐色,前后齿堤无齿.颚叶黄色,边缘有浓厚的长毛.胸板淡黄色,长大于宽.步足黄褐色,步足测量:Ⅰ 12.40 (3.83+1.38+3.42+2.60+1.17),Ⅱ 12.60 (3.88+1.38+3.57+2.60+1.17),Ⅲ 6.80 (2.09+0.77+1.79+1.33+0.82),Ⅳ7.05 (2.40+0.71+1.79+1.33+0.82); 足式:2143.腹部十分窄长,淡黄色,被有黑色长毛; 腹部背面前端有2对明显的肌痕,腹部后部有横纹,似分节状.触肢胫节腹突拇指状; 外侧突较长,末端骨化程度高,弯曲呈"7"字形状; 生殖球简单,内侧具亚盾板; 插入器刺状,末端较钝.分布:广西.     

A new species of Amphictene (Annelida,Pectinariidae) from the northern South China Sea

Pectinariids are a family of polychaetes commonly found in shallow coastal waters around the world, but their diversity is poorly known along the coasts of Asia. Here we describe Amphictenealatasp. n. (Pectinariidae), based on 15 specimens collected from the coastal waters of Guangdong in the northern South China Sea. This new species can be distinguished from all other 13 described species and one described subspecies of Amphictene by having a pair of dorsolateral lobes on segment 3, a pair of large lateral lobes on segment 21, and more scaphal hooks (26 to 37 pairs).