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1.
Nineteen species of chromodorid nudibranchs are described including three new species of Chromodoris , two of Glossodoris and one each of Noumea, Cadlina and Thorunna from the Indo-West Pacific. The colour of all species is white with either a single yellow or gold band at the edge of the mantle or a double band of red and yellow, or orange and red or purple. All previously described species with similar colour patterns, from both the Indo-West Pacific and other regions are discussed.  相似文献   

2.
The full anatomy of over fifty species of the Chromodorididae is described including the type species of all but one of the nominal genera. The holotype material of the type species of Ehrenberg's problematic genera Glossodoris, Actinodoris and Pterodoris is described. Sixteen genera are recognized within the family Chromodorididae including four new monotypic genera. Glossodoris is shown to be a senior synonym of Casella , not Chromodoris , and Ceratosoma and Verconia are shown to be members of the Chromodorididae. The separation of Cadlina, Tyrinna and Cadinella into a separate sub-family Cadlininae is considered unnecessary.
A large suite of characters including features of the external shape, mantle glands, gills, foregut, jaw-plates, radula and reproductive system are used to define the genera. A tentative phylogeny of the family is proposed.  相似文献   

3.
The genus Glossodoris Ehrenberg is reviewed and 28 species are placed in the genus. Seventeen species are fully described and of these, seven are named as new species. Four others are considered new to science, but insufficient material is available to name them. Published information on a further 11 species is included as is a discussion on phylogenetic trends within the genus.  相似文献   

4.
5.
The Chromodorididae is a large and colourful family of nudibranch sea slugs distributed across the world's oceans. Most diversity is centred in the Indo-Pacific, but several genera are present in multiple ocean basins, or across regions separated by biogeographical barriers. The monophyly of these widespread genera had not been tested previously. We used 18S rDNA, 16S rDNA and COI sequence data to generate a molecular phylogeny for this group. We recovered evidence of paraphyly or polyphyly in all of the widespread genera examined ( Hypselodoris , Mexichromis , Chromodoris and Glossodoris ). East Atlantic Hypselodoris and west Atlantic + east Pacific Mexichromis species were more closely related to each other than they were to their Indo-Pacific congeners. The addition of Southern Ocean species of Digidentis demonstrated an interesting alternative to this relationship, becoming the sister group for the east Atlantic Hypselodoris on the basis of 16S and 18S data, but not COI data. Sister group relationships were recovered for most monotypic or enigmatic genera. Ardeadoris is linked to Glossodoris , as is Diversidoris ; Pectenodoris is sister to the Indo-Pacific Mexichromis clade, and Verconia is the sister to Noumea haliclona . Controversy surrounding the placement of the three most basal genera was only partially resolved. Using Actinocyclus to root the mitochondrial trees, Cadlinella was the unsupported sister to the Chromodorididae (excluding Cadlina ), and Tyrinna occupied a relatively basal position, although this also did not receive significant statistical support. Adding nuclear 18S data gave support for Cadlina as the sister group to the rest of the Chromodorididae s.s. Otherwise, like previous molecular studies, mitochondrial genes supported an alternative position for Cadlina (with other dorid genera).  相似文献   

6.
Abstract The tribe Trypetimorphini, the genus Ommatissus , and its two subgenera and eleven species are redescribed or described as new. Evidence for the monophyly of both the genus and of the tribe to which it belongs is examined; it is concluded that while the genus is monophyletic, the monophyly of the tribe is in doubt. Keys for the separation of the three genera of the tribe and for all of the known species of Ommatissus are presented. A new subgenus of Ommatissus is described: O.(Opatissus) , with the type-species O.vietnamicus . Four new species are described: Ommatissus magribus from Morocco, O.kamerunus from Cameroon, O.natalensis from South Africa and O.vietnamicus from Vietnam. The 'Dubas bug', Ommatissus lybicus Bergevin, formerly regarded as a variety of O.binotatus Fieber, is raised to full species status. Trichoduchus is synonymized with Trypetimorpha resulting in the new combinations Trypetimorpha biermani Dammerman, T.china Wu and T.japonicus Ishihara. Trichoduchus japonicus Fennah is synonymized with Trypetimorpha japonicus Ishihara.  相似文献   

7.
Revision of the dolichoderine ant genus Turneria (Hymenoptera: Formicidae)   总被引:1,自引:0,他引:1  
Abstract. The Australasian ant genus Turneria is revised. T.bidentata Forel, T.dahlii Forel and T.pacifica Mann are redescribed and a lectotype designated for T.bidentata. T.frenchi Forel is transferred to Stigmacros (comb.n.), and T.butteli Forel is transferred to Iridomyrmex (comb.n.). Three new species, T.arbusta, T.collina and T.postomma, are described from Papua New Guinea. Males of the genus are described for the first time. A key to the workers of recognized species and a distribution map are provided. The group is analysed cladistically and the resulting species relationships are discussed, along with a comment on the use of polymorphic characters.  相似文献   

8.
The larval stage of Tortopus is redescribed based on three species: T. puella from North America, the only species of the genus previously known from larva, and the larvae of T. obscuripennis and T. sarae from South America described here. Generic characters of the larva include: relatively large finger-like gill near base of maxilla, inner margin of mandibular tusks with a subdistal tubercle, straight or weakly convex frontal ridge present between antennae, reduced unilamellated gill on abdominal segment I. Additionally the male imagines of both Neotropical species are described for the first time, and T. obscuripennis is recorded from Bolivia. Diagnoses, SEM photographs, and illustrations are given for the new stages described and for the identification of the three Tortopus species known as larvae.  相似文献   

9.
Abstract

Six genera and 11 species of Orthotylinae are now known from New Zealand. Zanchius Distant is newly recorded. One new genus, Tridiplous, and seven new species of endemic New Zealand Orthotylini are described and illustrated. Four new species are described in Tridiplous: T. burrus, T. parvapiatus, T. penmani, and T. virens, and three new species are described in Zanchius: Z. ater, Z. rubicrux, and Z. totus. Keys are provided to identify New Zealand taxa of the tribes of Orthotylinae, genera and species of Halticini, genera of Orthotylini, and species of Tridiplous and Zanchius. The bugs are illustrated with colour habitus photos, and drawings including male and female genitalia. Economic importance is discussed.  相似文献   

10.
Corinne A.  Lynch 《Journal of Zoology》1989,219(4):545-567
Two new species of Tyrophagus Oudemans, 1924, are described. One species, T. Savasi , has been discovered in several habitats of economic importance. It closely resembles T putrescentiae (Schrank) and T. neiswander Johnston & Bruce. The second, T. rebertsonae , has so far been discovered in only two, soil and tree bark. It differs from other species of Tyrophagus by a number of character. Both new species have pigmented 'eyespots' on the prodorsal shield. A new character used to differentiate these species is the shape of the sclerotized neck of receptaculum semins.
The position of the new species in three commonly used keys to adults of the genus Tyrophagus is indicated  相似文献   

11.
A new species of the genus Tylototriton is described,from Yuexi county,Anhui province,in the south of the Dabie Mountains.It is based on morphological and molecular analysis.The new species is identified as belonging to the Tylototriton asperrimus group and shares a number of similarities with T.wenxianensis,T.broadoridgus and T.dabienicus.The diagnostic characteristics of the new species are as follows: the head length is greater than the width of the head; bony ridges on the head are prominent and necked-in; the distal digit ends,ventral digits,peripheral area of the cloaca and the tail's lower edge are orange.The result from the molecular analysis of the genus Tylototriton(including the type specimen of the new species) based on three mitochondrial genes(ND1,ND2 and CYTB) indicated that the new species was close to T.wenxianensis,T.dabienicus,and T.broadoridgus,but formed an independent clade.This result was consistent with the morphological analysis above,which supports the theory that the population distributed in the south of the Dabie Mountains,namely in from Yuexi county,Anhui province,represented a distinct species,Tylototriton anhuiensis sp.nov.  相似文献   

12.
A collection of thambematids (Crustacea, Isopoda, Asellota) from depths of 1400–2900 m in the Rockall Trough, west of the British Isles, is considered. The type species of the genus Thambema Stebbing, T. amicorum Stebbing, is rediagnosed and three new species, T. golanachum, T. tanum , and T. fiatum , are described. The genera Thambema and Microthambema Birstein are contrasted and taxonomic characters separating these genera are provided. The difficulty of providing effective definitions for higher category taxa is discussed and a new definition is provided for the Asellota.  相似文献   

13.
G. Levy    P. Amitai 《Journal of Zoology》1982,196(1):81-131
Israeli thendiid spiders of the genera Theridion, Achaearanea and Anelosimus have been revised. A relative richness in species is presented providing thereby updated information on the little known Mediterranean spider fauna. All type and non-type material previously described from the Middle East, deposited in several European collections has been re-examined, along with species from adjacent regions considered pertinent to the study undertaken. Altogether 21 species are recognized. Systematic, ecologic and all available zoogeographic information on taxa treated are discussed along with recent, pertaining literature. The presence of seven species formerly reported from Israel has been confirmed and the occurrence of another four species unknown hitherto from this region, has been proved. Some of these have never been adequately described or illustrated.
Ten new species are described: Theridion ochreolus, T. agaricographus, T hierwhonticus, T. jordanensis, T. negebensis, T. gekkonicus, T. dafnensis, T. vallisalinarum, T. pustiliferus and Anelosimus giladensis. The male of Theridion melanostictum is described for the first time. Keys, illustrations of diagnostic characters and records of distribution are provided for each species, all readily applicable also in adjacent countries. These may provide clues for better understanding of zoogeographic patterns of the Palearctic fauna, including those of the Old World Desert belt extending south and east of the Mediterranean region.  相似文献   

14.
Six new species of Timonius (T. alius, T. bosaviensis, T. creber, T. cyathicalyx, T. insularis, and T. pullenii) are described from New Guinea and surrounding islands. The new species are illustrated and notes are provided on their habitat, distribution and phenology. None of the new species is readily assignable to any previously recognized subgenus or species-group.  相似文献   

15.
16.
A revision of the genus Trixa Meigen (Diptera: Tachinidae)   总被引:1,自引:0,他引:1  
The genus Trixa Meigen, 1824 is revised. Dexiotrix Villeneuve, 1936 and Trixella Mesnil, 1980, each of which was sometimes treated as a distinct genus, are treated as junior synonyms of Trixa Meigen. Two species from Sichuan and Yunnan, China, are described as new to science, viz. Trixa chinensis sp. nov. and T. chaoi sp. nov. T. alpina Meigen is treated as a junior synonym of T. caerulescens Meigen. T. nox (Shima) and T.pubiseta (Mesnil) are newly recorded from China. Males of T. pubiseta (Mesnil) and T.longipensis (Villeneuve) are described for the first time. Diagnoses, figures and a key to twelve species in Trixa are given.  相似文献   

17.
Chromodorid nudibranchs (Chromodorididae) are brightly coloured sea slugs that live in some of the most biodiverse and threatened coral reefs on the planet. However, the evolutionary relationships within this family have not been well understood, especially in the genus Glossodoris. Members of Glossodoris have experienced large‐scale taxonomic instability over the last century and have been the subject of repeated taxonomic changes, in part due to morphological characters being the sole traditional taxonomic sources of data. Changing concepts of traditional generic boundaries based on morphology also have contributed to this instability. Despite recent advances in molecular systematics, many aspects of chromodorid taxonomy remain poorly understood, particularly at the traditional species and generic levels. In this study, 77 individuals comprising 32 previously defined species were used to build the most robust phylogenetic tree of Glossodoris and related genera using mitochondrial genes cytochrome c oxidase subunit I and 16S, and the nuclear gene 28S. Bayesian inference, maximum likelihood, and maximum parsimony analyses verify the most recent hypothesized evolutionary relationships within Glossodoris. Additionally, a pseudocryptic and cryptic species complex within Glossodoris cincta and a pseudocryptic complex within Glossodoris pallida emerged, and three new species of Doriprismatica are identified.  相似文献   

18.
Three species of Tetraploa collected from Sasa, or bamboos, are described and illustrated. Among them, T. curviappendiculata on Sasa kurilensis and T. longissima on Pleioblastus chino are compared with hitherto known species and described as new species. In the nomenclature, T. javanica is substituted for T. biformis, formerly reported from the dead bark of a broad-leaved tree in Japan, as a correct name.  相似文献   

19.
Three new species of the genus Trachyandra are described, T. hantamensis Boatwr. & J.C.Manning, T. kamiesbergensis Boatwr. & J.C.Manning and T. sanguinorhiza Boatwr. & J.C.Manning. These species form part of a group of morphologically similar species referred to here as the T. thyrsoidea group and are distinguished by their generally small stature, filiform leaves (except for T. tortilis), and simple or shortly branched racemes of patent flowers with maculate tepals. Many of the species in the group have roots that contain abundant anthraquinones, visible as a red substance below the outer skin of the roots, and which is soluble in alcohol, thus often staining herbarium papers purple. A synopsis of the eight species that comprise the T. thyrsoidea group is presented, with maps of each species and illustrations of those described as new.  相似文献   

20.
The genus Thambemyia Oldroyd is revised. Five species are recognized. Three new species –T. bisetosa, T. bruneiensis and T. hui– are described, and T. pagdeni Oldroyd, 1956 is redescribed. A new subgenus is founded for one new Japanese species, T. (Prothambemyia) japonica. A key to all known species of the genus is provided. Their distributions are also discussed.  相似文献   

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