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1.
In the context of an ongoing revision of the orchid genus Liparis in Thailand, we describe and illustrate a new species under the name L. rubescens Tetsana, H. A. Pedersen & Sridith. Morphologically, it is particularly similar to L. dumaguetensis Ames from the Philippines, but it differs in the shape of the lateral sepals and in several characters of the labellum. Among the Liparis species already known from Thailand, L. atrosanguinea Ridl. bears a certain resemblance to the new species, but not so much as to make misidentifications likely. So far, L. rubescens is only known from Khao Nan National Park in the southern Thai province of Nakhon Si Thammarat, but we suggest that it should also be searched for in other parts of peninsular Thailand, southernmost Myanmar and Peninsular Malaysia. 相似文献
2.
Summary In the literature, arctic snailfish of the genus Liparis are often identified as L. liparis, primarily due to the wide morphological variation reported for this species. Recent morphological studies have, however, identified separate arctic Liparis species. Electrophoretic studies of the genetic relationship between two such species (L. fabricii and L. gibbus), from deepwater localities west of Spitsbergen revealed significant differences in allozyme mobility at a series of gene-loci and thus supported the evidence that they are valid species. Their extremely low intra-specific variability, with average heterozygosities well below one percent, is comparable to measures for other polar teleosts. No protein coding locus was found suitable for studies of possible population structuring of L. gibbus due to the very low frequencies of all but the commonest allele. 相似文献
3.
To elucidate the evolution of epiphytes in Liparis section Liparis, we examined the phylogenetic relationships of 16 species by using internal transcribed spacer regions of 18S–26S nuclear
ribosomal DNA (ITS) and three chloroplast DNA regions (trnS-trnG spacer, trnL with trnL-trnF spacer, and partial matK). Results showed that the epiphytic L. fujisanensis is sister to the terrestrial L. koreana and L. kumokiri, while another epiphyte, L. truncata, is sister to the terrestrial L. krameri. Therefore, the two epiphytic species evolved from terrestrial species independently in section Liparis. Comparative seed morphology revealed that the epiphytes have larger embryos than their closely related terrestrial counterparts.
A similar trend toward the increase of embryo size in the two epiphytic species belonging to closely related, but distinct
clades suggests that the large embryo may have an advantage in the epiphytic lifestyle. The two epiphytic species share another
character state, smaller air spaces in the seed than that of closely related terrestrial species, suggesting possible low
dispersibility of the epiphytes.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. 相似文献
4.
Four unusual masses of adhesive fish eggs surrounding limbs of the octocoral Primnoa sp. were collected in Seguam Pass in the Aleutian Island Archipelago at a depth of 397 m. The eggs contained embryos in the
flexion stage of development. When dissected and cleared and stained, counts of dorsal and anal fin rays and vertebrae allowed
identification of the eggs as those of Allocareproctus unangas Orr and Busby, a newly described snailfish species. This is first report of snailfishes of the genus Allocareproctus, and of liparids other than those in the genus Liparis, spawning outside of lithodid crabs. 相似文献
5.
Validity of the species Liparis schantarensis (Lindberg and Dulkeit, 1929) (Scorpaeniformes: Liparidae) is confirmed and redescribed based on six new specimens collected
in Avacha Bay on the southeastern Kamchatka Peninsula. These specimens are the first records of this species reported in more
than 70 years and the first outside the Sea of Okhotsk. Distinguished from almost all other members of the genus Liparis by a comblike anteriormost part of the dorsal fin, both males and females have 5–7 elongated anterior dorsal fin rays, with
the distal ends free of the membrane for about one-half to two-thirds the length of the ray. 相似文献
6.
Larvae and juveniles of Liparis ochotensis, L. latifrons, L. tartaricus, L.brashnikovi, and L. kusnetzovi (Liparidae) are described for the first time based on ichthyoplankton catches carried out in the northwestern Sea of Japan in the decade 1992–2002. Our earlier published data on the larval development of L. agassizii and juveniles of L. punctulatus are supplemented. It is shown that larval development in the Liparis includes a planktonic stage. The larvae of different species turn into juveniles at a different lengths: under 15 mm in the case of littoral species and at about or over 20 mm in the case of sublittoral species. The major morphological characteristics of larvae of different Liparis species—body height and shape, pelvic disk length, preanal length, presence of a notch in the dorsal fin, pigmentation pattern, and others—have been distinguished. Original illustrations of larvae and juveniles are provided. 相似文献
7.
R. V. Gorjunova 《Paleontological Journal》2010,44(1):21-35
Based on the study of the neotype and the astogeny of the type specimens of the species Ascopora nodosa (Fischer von Waldheim, 1837), the diagnosis and species composition of the genus Ascopora Trautschold, 1876 are emended. The genus Ascopora and three species out of the five included in this genus—A. nodosa (Fischer von Waldheim, 1837); A. sokolovae Schulga-Nesterenko, 1955; and A. latiaxis Schulga-Nesterenko, 1955—are described. A new genus, Tetrasella gen. nov., with the type species T. blanda sp. nov. is described. This genus comprises five species, transferred from the composition of the genus Ascopora. An emended diagnosis of the genus Ascoporella Krutchinina, 1986, is provided. This genus comprises nine species, of which two, A. lecta sp. nov. and A. mera sp. nov., are described as new species. 相似文献
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9.
A powdery mildew fungus on leaves of Dalbergia cultrata var. cultrata (Fabaceae) collected at the Queen Sirikit Botanical Garden in northern Thailand is proven to be a new species of the genus Brasiliomyces and is described as B. chiangmaiensis sp. nov. with light and SEM micrographs. Differences in known Brasiliomyces species are discussed, and a key to species of this genus is provided. 相似文献
10.
L. G. Bragina 《Paleontological Journal》2010,44(1):11-15
Diverse radiolarians from the Upper Cretaceous Perapedhi and Moni formations (southern Cyprus) are studied. Many representatives
of the genus Afens Riedel et Sanfilippo, 1974 are recognized. The diagnosis of the genus Afens is emended and three new species of this genus, Afens perapediensis sp. nov., Afens moniensis sp. nov., and Afens concinnus sp. nov., are described. In addition, the species Afens liriodes Riedel et Sanfilippo, 1974 is redescribed. 相似文献
11.
Summary A taxonomic revision of the palm genus Podococcus (Arecaceae) is presented. Two species are recognised: P. barteri, a species relatively widespread in a coastal band from Nigeria to the D. R. Congo and P. acaulis, a species previously considered conspecific to P. barteri, almost exclusively confined to Gabon. The taxonomic history, morphology, distribution and conservation status of the genus
and each species are discussed 相似文献
12.
The only two species of Choiromyces collected up to now in Spain, C. venosus and C. magnusii, were studied with both morphological and molecular methods. Phylogenetic inference of nrDNA ITS and LSU sequences showed
that they should be considered independent species in the genus Choiromyces. Choiromyces venosus is a hypogeous fungus, infrequent but naturally present in the Iberian Peninsula, that is imported into Spain from central
Europe without any indication of its origin or proper taxonomic identification. It is usually sold as highly-prized edible
species of the genus Tuber such as T. magnatum. Choiromyces magnusii is a more frequent hypogeous fungus in Spain that is commercialized in spring on a local scale together with different species
in the genus Terfezia. Additionally, the Australian species Reddellomyces westraliensis, which was introduced with Eucalyptus camaldulensis plantations, is cited here for the first time in Spain and Europe. 相似文献
13.
The liparid fish Liparis marmoratus is redescribed based on examination of two syntypes and two additional specimens. Liparis marmoratus is distinguished from other Sea of Okhotsk and Bering Sea Liparis by having a wide head, small mouth, short blunt snout, closely set chin pores, small gill opening, a firm body with slightly
developed subcutaneous gelatinous tissue, a nearly horizontal dorsal body profile, and unique body markings and coloration.
Liparis marmoratus was previously known only from the Sea of Okhotsk. A Liparis specimen collected near St. Lawrence Island in the northern Bering Sea was compared to the type series and determined to
be L. marmoratus.
Received: April 4, 2000 / Revised: November 2, 2000 / Accepted: January 11, 2001 相似文献
14.
V. G. Kaplin 《Entomological Review》2010,90(3):387-404
Five new species, Petrobius caucasicus sp. n., Trigoniophthalmus presimplex sp. n., T. divnogorski sp. n., T. kislovodski sp. n., and T. adigei sp. n. (Machilidae), are described from the Caucasus. A key to all the known species of the genus Trigoniophthalmus is given. Two subgenera (Trigoniophthalmus s. str., Trigoniocellus subgen. n.) in the genus Trigoniophthalmus are described. 2 + 2 retractile vesicles are present on abdominal segments II–IV in the species of Trigoniocellus subgen. n. and on II–V abdominal segments in Trigoniophthalmus s. str. Analysis of the evolution and phylogenetic relations between the species of the genus Trigoniophthalmus is performed for the first time. The formation of bristletails of the genus Trigoniophthalmus appears to occur in the Caucasian mountain province of the European area, from where they penetrated to the Central European
mixed province and the Mediterranean subarea. Among the described species of the genus, T. kislovodski is distinguished by the greatest number of plesiomorphic states of morphological characters. 相似文献
15.
We analysed the phylogenetic and phylogeographic relationships of four Mediterranean species of the rare slave-making ant
genus Chalepoxenus and eleven of its about 20 Temnothorax host species by sequencing the mitochondrial Cytochrome Oxidase I and II genes. Neighbour-Joining, Maximum Parsimony and
Bayesian analyses based on 1320 bp indicate that the genus Chalepoxenus constitutes a monophylum. In all three analyses, C. kutteri from Southwest Europe and the workerless, “degenerate slavemaker” C. brunneus from North Africa form a monophyletic group. C. muellerianus and C. tauricus, distributed in Southern Europe and Ukraine, respectively, form a monophylum in the Neighbour-Joining and the Maximum Parsimony
analysis. In our limited set of only 11 of several hundred Temnothorax species, T. flavicornis forms the sister group of Chalepoxenus. Our study further indicates paraphyly of the genus Temnothorax with respect to Chalepoxenus. Moreover, the results suggest that speciation in this slave-making genus is possibly caused by the formation of host races
as different Chalepoxenus species use different hosts, and some samples seem to cluster by host species rather than by geographical distance.
Received 5 September 2006; revised 17 March 2007; accepted 23 March 2007. 相似文献
16.
The first record of the sea snake Chitulia inornata from the Arabian Sea and its distribution data are reported. The species composition of the genus Chitulia is analyzed. A revised key to the species of the genus Chitulia is provided. 相似文献
17.
Apuleia Mart., a genus of the Leguminosae native to South America, is revised. Species limits within the genus were tested using
morphometrics and shape analysis of leaflets and fruits. Morphological evidence indicates that although there is great variation
in Apuleia, the genus cannot be reliably separated into different species or infraspecific taxa. Apuleia is monospecific, comprising the single species A. leiocarpa (Vogel) J. F. Macbr. 相似文献
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