The cytogenetics of Lotus (Leguminosae)

Chromosome numbers for 108 species of the genus Lotus (Leguminosae) are now known. This represents an increase of 32 new species which have been reported since a chromosome atlas for Lotus was published in 1965. At this rate, with just over one chromosome number being reported for a new species per year, it will require almost a century for the chromosome numbers to be determined for all of the species in the genus. A review of the cytogenetic features which have been observed in the genus through karyotype analyses, chromosome banding, Feulgen cytophotometry, anther culture, HCN reaction and interspecific hybridization is presented. These include cytomixis and B chromosomes (both found in hybrids of diploid species in the L. corniculatus group when L. alpinus was one of the parents), desynapsis, binucleate cell formation, polytene chromosomes in suspensor cells and trisomics in L. pedunculatus. There has been a reduction of HCN content in the species with evolutionary development which is correlated with basic chromosome number and geographic distribution. Classical karyotype analyses may not be a suitable method to investigate the parentage of L. corniculatus because of the chromosomal repatterning which has occurred during the evolutionary development of the closely related diploid species.     

Review of the genus Chauliopleona Dojiri and Sieg, 1997 (Crustacea,Peracarida, Tanaidacea) and description of three new species

The tanaidacean genus Chauliopleona Dojiri and Sieg, is reviewed. A generic diagnosis is given and the type species Chauliopleona dentata Dojiri and Sieg, is redescribed. Three species, Leptognathia armataHansen, , L. amdrupii Hansen, and L. hastata Hansen, are placed into this genus. Three new species, one from the Angola Basin, one from the deep sea of the tropical East Pacific and one from Antarctica are described. A key for the genus is provided.     

New Aoridae (Crustacea: Amphipoda) from Tasmanian kelp holdfasts

Three new aorid amphipod species from Tasmanian kelp holdfasts are described: Microdeutopus varietensis sp. nov., Lembos clematis sp. nov. and L. verrucularum sp. nov. Strong sub-ocular regression of the head is a usual feature of the genus Microdeutopus and is shown by M. varietensis. It is not, however, typical of the other known Australian/NewZealand Microdeutopus species (M. haswelli and M. apopo). The Tasmanian Lembos species (L. chiltoni, L. clematis and L. verrucularum) are not known from New Zealand, where the genus is represented by L. pertinax, L. acherontis and L. hippocrenes. The Tasmanian Lembos species display the condition of the mandibular palp that typifies the genus, that is, article 3 longer than article 2 (cf. the New Zealand species which display the reverse, unusual, condition).     

A new genus and species of Syncarida (Crustacea: Malacostraca) from Borneo

A new genus and species of the family Parabathynellidae, Sabahbathynella wongi, is described. It has been discovered in the interstitial of coarse sand filling the spaces between big stones of the bank along a stream in Sabah on Borneo. The new genus of the family Parabathynellidae exhibits some unusual features which make it impossible to assess its phylogenetic position. There are some convergencies with the genus Thermobathynella.     

Oribatid mites of Liebstadia (Acari: Oribatida: Scheloribatidae) from Mongolia,with notes on taxonomy of the genus

Three new species of oribatid mites belonging to the genus Liebstadia are described from Mongolia. The new species are characterized by the poorly developed pteromorphae; the club-shaped head of the sensilli; the absence of the dorsosejugal suture; the dorso-ventral thickness, and the length and arrangement of notogastral setae. In addition, L. similis (Michael, 1888) is redescribed and recorded for the first time in Mongolia. Protoribates serratomarginatus Mahunka, 1983 is synonymized with L. similis. A key to the known species of the genus Liebstadia is given.     

The genus Lindaspio (Annelida: Polychaeta: Spionidae), and a new species from an oil field off Congo,western Africa

A new species of the genus Lindaspio (Polychaeta: Spionidae) is described from an oil field off Congo (tropical eastern Atlantic). Lindaspio sebastiena n. sp. is easily distinguished from the two other known species of Lindaspio, L. dibranchiata Blake and Maciolek (1992) and L. southwardorum Blake and Maciolek (1992), by the presence of a conical palp, the first noto-hooks beginning on setiger 55, the number of dorsal spines on setigers 2–4 and the absence of a caruncle. A new diagnosis of the genus is put forward, and the two spionid genera, Lindaspio and Scolecolepides, are discussed.     

Reflections on the genus Amaga Ogren and Kawakatsu 1990, and description of a new genus of land planarian (Platyhelminthes: Tricladida: Geoplanidae)

Amaga amagensis, the type species of the genus Amaga, and Amaga bogotensis are re-described. Detailed analysis of the morphology of A. amagensis revealed important taxonomic features, such as testes located dorsally to the supraintestinal parenchymal muscular layer, and secretory accumulations opening through the lateral margins of the body. These characters, as well as other morphological features, are discussed, culminating in an emendation of the generic diagnosis of Amaga. Amaga bogotensis exhibits a characteristic set of morphological features, namely an eversible penis, a male atrium lined with large musculosecretory papillae, and independent muscular coats around both male and female atrium. Therefore, a new genus is proposed for this species.     

On the new goby,Ctenogobius veliensis (Teleostei: Gobiidae) from the South-West coast of India

Summary

Ctenogobius veliensis, a new species of gobiid fish is described from the South-West coast of India. The characters of the fish conform to those of the genus Ctenogobius Gill but differ markedly from those of other recorded species of the genus. Apart from the usual, external morphological, morphometric and metistic characters, several other features such as the cephalic-lateralis system, skeletal features and morphology of the alimentary canal are also studied and have been found to be of significance for identifying the species. The fish shows distinct sexual dimorphism in many features.     

A new genus with three new species of copepods from the family Diaixidae (Crustacea: Calanoida), and a redefinition of the family

Plankton samples taken in the Gulf of Carpentaria, Australia, yielded material of a new genus containing 3 new species: Anawekia spinosa gen. nov. et sp. nov., A. robusta sp. nov. and A. bilobata sp. nov., which are described herein. The family Diaixidae now contains 12 described species in 2 genera, 9 being in the genus Diaixis. It is noted that 3 of the Diaixis species (including the type species) share some features which are not shared with the remaining 6 species, and that these latter species should probably be placed into a third genus. An amplified redefinition of the family is given.     

Lasalleistichus a new genus of Tetrastichinae (Hymenoptera: Eulophidae) from the Neotropical region,including four new species

ABSTRACT

A new genus, Lasalleistichus, is described based on material from the Neotropical region (Brazil, Costa Rica, Peru). This new genus includes four species: L. albiclava, L. albifasciatus, L. fuscicoxa, L. longicaulis, all spp. n. and described here. The group is mainly female based, males are known only for L. albiclava. There is no biological information available for this group.

http://www.zoobank.org/urn:lsid:zoobank.org:pub:82E08F36-E2C4-42FF-AD12-11B49C272AC6     

Species of Arachnopusia (Bryozoa: Cheilostomata) collected by discovery investigations

Eighteen species of the cheilostome bryozoan genus Arachnopusia Jullien are described from Antarctic, Subantarctic and southern cold temperate localities. Eleven species are considered to be new to science. The morphology of Arachnopusia species is discussed, with particular reference to features of taxonomic value, and the zoogeography of the genus is considered briefly.     

A new genus and species of leptostracan (Crustacea: Malacostraca: Phyllocarida) from Guana Island,British Virgin Islands,and a review of leptostracan genera

Saronebalia guanensis, a new genus and species of leptostracan, is described from material discovered in shallow subtidal waters of Guana Island, British Virgin Islands. The specimens were collected from light traps placed on sediment and by hand from the green alga Halimeda. Saronebalia differs from other leptostracans most notably in the morphology of the antennule and the eighth thoracic limb: the articles of the antennular flagellum are fused and bear dense clusters of setae, and the eighth thoracic limb is elongate. While its eyes, like those of Nebalia, are non-tuberculate, it shares the rostral spine, dentate process of antennular article 4, and serrate pleopodal protopods of Levinebalia and Paranebalia. Specimens of the new genus lack the setal row of the exopod of pleopod 1, a complex feature characteristic of Dahlella, Levinebalia, Nebalia and Paranebalia. A cladistic analysis of the 10 leptostracan genera, using 30 morphological characters from these features and others, also supports the status of Saronebalia as a new genus. Saronebalia represents the third leptostracan genus to be recorded from the Caribbean Sea.     

Redescription of the genus Noteochordodes,reinterpretation of Noteochordodes dugesi (Camerano, 1898), a new combination of Neochordodes talensis (Camerano, 1897) and a description of a new species

Three species of the freshwater genus Noteochordodes (Nematomorpha) have been reported from Argentina. In this reinvestigation Neochordodes talensis is included into Noteochordodes on the basis of its cuticular structure. The ultrastructural study of the holotype of N. dugesi showed features which are correspondent with the genus Pseudochordodes. Consequently, some specimens formerly assigned to this species have been assigned to a new species, Noteochordoeds cymatium. Another new species, Noteochordodes achosmosus is also described. Therefore, we regard five species to be valid for the genus Noteochordodes: N. achosmosus, N. cymatium, N. desantisi, N. talensis and N. saltae.     

Four new freshwater gobies of the genus Rhinogobius (Teleostei: Gobiidae) from northern Vietnam

Four new freshwater gobies of the genus Rhinogobius Gill, were collected from the river running into the Gulf of Tonkin in northern Vietnam. They are Rhinogobius boa new species, Rhinogobius variolatus new species, Rhinogobius virgigena new species and Rhinogobius sulcatus new species. These four new species can be distinguished from other congeneric species by a combination of characters such as the meristic features, shape of body, shape of first dorsal fin and coloration pattern.     

New species and rediagnosis of Akamboja,and a new record for A. minimum (Coleoptera: Phengodidae,Mastinocerinae)

ABSTRACT

Akamboja was recently described based on five species with relatively small geographic ranges, all of which are within the boundaries of the South-eastern Atlantic Rainforest in Brazil. Recent expeditions in the continental island of Ilha Grande (Angra dos Reis, Rio de Janeiro State, Brazil) resulted in the discovery of a new species of the genus. Akamboja insularis sp. nov. has all diagnostic features of the genus, except for the branches of the antennomere IX, which are separated, unlike any other Akamboja. Here, we describe this new species, provide a new record for Akamboja minimum Roza et al. and propose a new diagnosis for the genus.

urn:lsid:zoobank.org:pub:DC47825C-B276-49CC-88DC-DFDC5D843356     

Leucosiidae of the Albatross expedition to the Philippines, 1907–1910 (Crustacea: Brachyura: Decapoda)

A report of the Leucosiidae collected during the Albatross Philippines expedition 1907–1910 is given. A total of 36 species in 17 genera are treated, with one genus (Heterolithadia) and nine species (Alox rugosum, Arcania elongata, Arcania globata, Heterolithadia fallax, Myra acutidens, Leucosia craniolaris, L. galantua, L. perlatta and Nucia tuberculosa) being new records for the Philippines and one species being new. This brings the total number of species known from the Philippines to 64, in 22 genera. A complete list of Philippine Leucosiidae is provided.     

A new earthworm genus (Eudrilidae: Oligochaeta) from Nigeria

A new eudrilid earthworm genus and species Takunodrilus yeyei from Takun is described whose spermathecal diagnostic features include an anterior pore, a coffin-shaped atrio-receptaculum, an unpaired anterior spermathecal chamber which is endowed with an ascending and a descending arm, and two furcae connecting the ovarian systems to the descending arm. The new genus is compared and contrasted with existing related genera.     

An investigation concerning two alleged species of Dracontomelon Bl., Anacardiaceae

Abstract

Three new species of this genus were described in 1961 and 1962 by M. L. Tardieu-Blot. In their original account, Evrard and Tardieu cited five specimens of the first species, D. laoticum, which were collected from Laos and South Vietnam. Of the other two species, D. petelotii Tard. from North Vietnam and D. schmidii Tard. from Cochin-China, only one specimen of each is cited. The present investigation indicates that two of these species do not belong to the genus Dracontomelon Bl.     

A systematic review of the genus Uroplatus (Reptilia: Gekkonidae), with comments on its biology

The gekkonid lizard genus Uroplatus is comprehensively reviewed for the first time. Six species are recognized—U. fimbriatus, U. sikorae, U. lineatus, U. ebenaui, U. alluaudi and U. guentheri—and their potential interrelationships are examined. Numerous bizzare morphological features, characteristic of the highly derived species U. fimbriatus, are found to be shared with other members of the genus, but are not universal for this taxon. Thus, while U. fimbriatus exhibits an overall morphology that has been employed in the past as justification for elevating the genus to monotypic familial status, this represents only an extreme of a continuum. U. guentheri and U. alluaudi are much less unusual in their morphological features. The potential biological roles of the more extreme features found within the genus are considered.     

Contribution to the systematic revision of the African cyprinid fish genus Labeo: species from the Lower Zaire river system

The species of the genus Labeo from the Lower Zaire river system have been revised on the basis of 284 preserved fishes, including type material of 18 nominal species cited or described from this region. Morphometrics, meristic counts, morphological observations and radiographs have been used for this study. All results obtained are supported by statistical analyses. From the 18 nominal species reported, only 12 species are recognized as valid. Two major groups were identified: one group has rows of conical papillae on the inner surface of lips; and the other group presents rows of transverse plicae on the inner surface of lips. The first group has two species: L. lineatus and L. weeksii. One synonymy is proposed: L. lineatus (partim) = L. weeksii. In the second group, 10 species have been identified: L. longipinnis, L. degeni, L. barbatus, L. macrostoma, L. falcipinnis, L. cyclorhynchus, L. parvus, L. greenii, L. nasus and L. sorex. One unidentified taxon apparently represents a species new to science, but this must be confirmed by a wider revision of the genus which is the subject of further research. Some synonymies in this group are proposed: L. brichardi (partim) = L. barbatus; L. lineatus (partim) = L. degeni. Other synonymies already established by Reid (1985), have been confirmed: L. lividus = L. barbatus; L. brichardi (partim) = L. macrostoma; L. variegatus = L. cyclorhynchus. One synonymy has been restored: L. velifer = L. longipinnis. Finally, one synonymy remains in question: L. chariensis = L. parvus. A key to species is provided.