The genus Chaerilus Simon, 1877 (Scorpiones, Chaerilidae) in Vietnam; description of a new species with comments on possible species-groups

Chaerilus julietteae sp. n. is described from a coastal massif of southern Vietnam. The new species is totally distinct morphologically from Chaerilus petrzelkai Kova?ík, also described from the South Vietnam: it shows more affinities with Chaerilus pictus (Pocock, 1890), described from Bangladesh. An attempt to divide the genus Chaerilus into species-groups is also proposed.     

Observations on the remarkable disrupted geographical distribution of the genus Microbuthus Kraepelin, 1898 in North Africa, with the description of a new species from Egypt (Scorpiones, Buthidae)

A disrupted Perisaharan pattern of distribution is confirmed for the species of the genus Microbuthus Kraepelin, 1898. A new species, Microbuthus flavorufus sp. n., is described from Egypt, raising the total number of known species of the genus to five.     

The cave population of Chaerilus Simon, 1877 from Palawan,Philippines, and description of a new species (Scorpiones: Chaerilidae)

The study of an important collection of scorpions, belonging to the genus Chaerilus, recently collected from a cave in the Palawan Island, Philippines, allows the clarification of the identity of this population, often misidentified with Chaerilus chapmani Vachon & Lourenço, 1985 known from caves in the Gunong Mulu National Park in Sarawak (Borneo). Chaerilus agnellivanniorum sp. n. is described from the Puerto Princesa Underground River Cave in Palawan Island based on 14 specimens, males, females, and juveniles. The new species is totally distinct morphologically from Chaerilus chapmani, a true troglobitic species. Chaerilus agnellivanniorum sp. n. may also be a true troglobitic element, but with a less marked degree of regression for several characters. Some comments on the ecology of the new species and on regional biogeography of Borneo and Palawan islands are also proposed.     

Glacidorbidae (Gastropoda: Heterobranchia) in South America: revision and description of a new genus and three new species from Patagonia

The Glacidorbidae, a family restricted to the Gondwanan realm (Tasmania, southeastern and southwestern Australia, and southern Argentina and Chile), previously included five genera with 20 identified species; 19 of them are Australian, with one genus and species, Gondwanorbis magallanicus (Meier-Brook & Smith, 1976 Meier-Brook, K. & Smith, B.J. (1976) Glacidorbis Iredale, 1943, a genus of freshwater prosobranchs with a Tasmanian-Southeast Australian-South Andean distribution. Archive für Molluskenkunde 106, 191–198. [Google Scholar]), from South America. Here we describe two new species of Gondwanorbis: Gondwanorbis fueguensis n. sp. from the freshwater gastropods province of Southern Patagonia (Argentina) and Gondwanorbis tricarinatus n. sp. from Chile, and a new genus and species from the freshwater gastropods province of northern Patagonia (Argentina), Patagonorbis nahuelhuapensis n. sp and n. gen.

http://www./zoobank.org/urn:lsid:zoobank.org:pub:62EA0972-3AEF-4188-8E6D-F10895CE2BEF     

Two new species of the genus Pelexia (Orchidaceae, Spiranthinae) from South America

Szlachetko, D. L. 1995. Two new species of the genus Pelexia (Orchidaceae, Spiranthinae) from South America. - Nord. J. Bot. 15: 173–175. Copenhagen. ISSN 0107–055X.
Pelexia sheviakii and Pelexia collocaliae are described as new species from Ecuador and Paraguay respectively. Pelexia sheviakii differs from Pelexia bonariensis and any other species related by its lip form, which is rhomboid, has no constriction, and with basal lip thickenings produced on upper surface of claw. The most characteristic features of Pelexia collocaliae are U-shaped callus at apices of petals, erect flowers, straight lateral sepals and narrow lip with two small calli near isthmus.     

The genus Chaerilus Simon, 1877 in Vietnam (Scorpiones; Chaerilidae): A possible case of a vicariant species

A new species of the genus Chaerilus Simon, 1877 is described from a cave in Dien Bien District, West of Dien Bien Phu city in northern Vietnam. The new species is morphologically similar to other Chaerilus species distributed only in the south of Vietnam and Cambodia and suggests a case of a vicariant species between northern and southern populations in the Southeast Asian peninsula.     

The genus Arctorthezia Cockerell (Hemiptera,Ortheziidae) with the description of a new species

This paper describes a new species of Arctorthezia Cockerell (Hemiptera: Coccoidea: Ortheziidae) from the Palaearctic region. The specimens were extracted from forest litter in the collections of Muséum d’histoire Naturelle de Genève, Switzerland, using Berlese funnels. Three further species, Arctorthezia cataphracta (Olafsen), Arctorthezia occidentalis (Douglas) and Arctorthezia pseudoccidentalis Morrison, are redescribed and re-illustrated. The genus Arctorthezia now contains five species. An identification key, diagnostic illustrations, photographs of unmounted females and new locality records of the Arctorthezia species currently known are provided.     

The lichen genus Heterodermia (Physciaceae) in South America – a contribution including five new species

Thirty‐three species of the lichen genus Heterodermia in South America, mainly from Ecuador and Peru, are defined. Morphology, anatomy, chemistry, habitat, distribution and interrelation between the species are discussed. A key to the treated species is presented. Five species are described as new; Heterodermia andina, H. arvidssonii, H. badia, H. fertilis and H. parva. One new combination is proposed; H. spinigera. Two species are reported as new to South America, H. spathulifera and H subcitrina, and H. palpebrata is reported as new to USA.     

中国似动蜉属及一新种记述 （蜉蝣目：扁蜉科）

似动蜉属Cinygmina是我国常见扁蜉科类群,分布广泛。本文对该属我国已知4种（湖南似动蜉C. hunanensis,斜纹似动蜉C. obliquistrita,红斑似动蜉C. rubromaculata,宜兴似动蜉C. yixingensis)和一新种（叉似动蜉Cinygmina furcata sp. Nov.）的鉴别特征作了对比和图示,并确认海南似动蜉C. hainanensis是红斑似动蜉C. rubromaculata的同物异名(新异名)。     

Monophyly and phylogenetic placement of the spider genus Labulla Simon, 1884 (Araneae, Linyphiidae) and description of the new genus Pecado

The genus Labulla Simon is circumscribed in phylogenetic terms to include the species Labulla thoracica (Wider), L. flahaulti Simon and L. machadoi sp. nov. The genital anatomy of the genus is described in detail and the taxonomy of the genus is reviewed. The monophyly of Labulla is supported by numerous morphological apomorphies of the male palp and female epigynum. Based on a cladistic analysis, a new genus, Pecado gen. nov. , is erected to place Labulla impudica Denis, from Northern Africa. Lepthyphantes insularis Saito and ' Labulla ' nepula Tikader, both formerly included in Labulla , are not congeneric with the type species of Labulla .  © 2005 The Linnean Society of London, Zoological Journal of the Linnean Society , 2005, 143 , 359–404.     

A new genus and species for the first recorded cave-dwelling Cavernicola (Platyhelminthes) from South America

Species diversity of Brazilian cave fauna has been seriously underestimated. A karst area located in Felipe Guerra, northeastern Brazil, which is a hotspot of subterranean diversity in Brazil, has revealed more than 20 troglobitic species, most of them still undescribed. Based on recent samplings in this karst area, we document the occurrence of the suborder Cavernicola (Platyhelminthes) in South American hypogean environments for the first time and describe a new genus and species for this suborder. Hausera Leal-Zanchet & Souza, gen. n. has features concordant with those defined for the family Dimarcusidae. The new genus is characterized by two unique features, viz. an intestine extending dorsally to the brain and ovovitelline ducts located dorsally to the nerve cords, which is complemented by a combination of other characters. The type-specimens of Hauserahauseri Leal-Zanchet & Souza, sp. n. are typical stygobionts, unpigmented and eyeless, and they may constitute an oceanic relict as is the case of other stygobiotic invertebrates found in this karst area in northeastern Brazil.