Updated information on genus Gomphidictinus (Odonata: Gomphidae) in China with description of Gomphidictinus tongi sp. nov. 

Zootaxa ◽  
2017 ◽  
Vol 4344 (2) ◽  
pp. 321
Author(s):  
HAO-MIAO ZHANG ◽  
ZHAO-YING GUAN ◽  
WEN-ZHI WANG
Keyword(s):  
Junior Synonym ◽  
Hainan Province ◽  
The Third ◽  
Basal Spine ◽  
Holotype Male

A new gomphid species, named as Gomphidictinus tongi sp. nov. (Holotype male, Mt. Diaoluoshan, altitude 930m a.s.l., Lingshui County, Hainan Province, China) is described here. It is regarded as the third species of Gomphidictinus based on the presence of the basal spine on median segment of the penis organ. Gomphidia interruptistria Zha, Zhang & Zheng, 2005 is regarded as a junior synonym of Gomphidictinus perakensis (Laidlaw, 1902), which is recorded from Yunnan, China.  

An additional new species of Peltoperlopsis Illies, 1966 (Plecoptera: Peltoperlidae) from China

Zootaxa ◽  
2019 ◽  
Vol 4686 (3) ◽  
pp. 429-434
Author(s):  
JINJUN CAO ◽  
RAORAO MO ◽  
WEIHAI LI ◽  
DÁVID MURÁNYI
Keyword(s):  
New Species ◽  
Yunnan Province ◽  
Southwestern China ◽  
The Third ◽  
Holotype Male

The holotype male of Peltoperlopsis sagittata sp. n. is described from Yunnan Province of southwestern China. The new species represents the third taxon of this peltoperlid genus known from China. 

A review of the Drepanosticta carmichaeli-group, with the description of D. wildermuthi sp. nov. from the Central Highlands of Vietnam (Odonata: Zygoptera: Platystictidae)

Zootaxa ◽  
2021 ◽  
Vol 5067 (2) ◽  
pp. 187-210
Author(s):  
QUOC TOAN PHAN ◽  
NAOTO YOKOI ◽  
NOPPADON MAKBUN ◽  
SHANTANU JOSHI ◽  
K.A. SUBRAMANIAN ◽  
...  
Keyword(s):  
Junior Synonym ◽  
Central Highlands ◽  
Definition Of ◽  
First Time ◽  
Holotype Male

A modified and expanded definition of the Drepanosticta carmichaeli-group is given. This includes the species: D. annandalei Fraser, 1924, D. brownelli Tinkham, 1938, D. carmichaeli (Laidlaw, 1915), D. emtrai Dow, Kompier & Phan, 2018, D. hongkongensis Wilson, 1997, D. jurzitzai Hämäläinen, 1999, D. sumatrana Sasamoto & Karube, 2007, D. tenella Lieftinck, 1935, D. vietnamica Asahina, 1997 and D. wildermuthi sp. nov.). The species of the group are reviewed and in most cases illustrated, diagnostic notes are given wherever possible. Drepanosticta polychromatica Fraser, 1931 is considered to be a junior synonym of D. carmichaeli and variation in D. carmichaeli is discussed. Drepanosticta wildermuthi sp. nov. from the Central Highlands of Vietnam (holotype male from Bao Loc district, Lam Dong Province) is described. The female of D. jurzitzai Hämäläinen, 1999 is described for the first time. A key to the males of the Drepanosticta carmichaeli-group is provided.  

Three new Brazilian species of the sharpshooter genus Amblyscarta Stål, 1869 and redescription of A. unifasciata (Fabricius, 1803) comb. nov. (Insecta: Hemiptera: Cicadellidae: Cicadellini)

Zootaxa ◽  
2019 ◽  
Vol 4711 (2) ◽  
pp. 379-392
Author(s):  
GABRIEL MEJDALANI ◽  
ALEXANDRE C. DOMAHOVSKI ◽  
RODNEY R. CAVICHIOLI
Keyword(s):  
Atlantic Forest ◽  
Rio De Janeiro ◽  
Minas Gerais ◽  
Junior Synonym ◽  
Amazon Forest ◽  
Mato Grosso ◽  
The Third ◽  
Brazilian Species ◽  
Northern Brazil

Three new Brazilian species of the sharpshooter genus Amblyscarta Stål, 1869 are described and illustrated: A. elianeae sp. nov. (states of Paraná and Minas Gerais), A. souzalopesi sp. nov. (State of Rio de Janeiro), and A. pinna sp. nov. (State of Mato Grosso). The first two species are from the Atlantic Forest, whereas the third is from the Amazon Forest. Cicada unifasciata Fabricius, 1803 is redescribed and transferred to Amblyscarta based on specimens from Guyana and northern Brazil (Amazon Forest). This Fabrician species is the type of the monobasic genus Strictogonia Melichar, 1926, which is thus considered a junior synonym of Amblyscarta. A diagnosis of Amblyscarta is added, as well as brief notes on the phenology of A. elianeae. This paper provides the first detailed descriptions and illustrations of the female terminalia of Amblyscarta species. 

Revalidation of Ogyrides occidentalis (Ortmann, 1893) (Decapoda: Caridea: Ogyrididae) from Brazil based on morphological and mtDNA evidences

2020 ◽  
Vol 40 (5) ◽  
pp. 627-633
Author(s):  
Mariana Terossi ◽  
Fernando L Mantelatto
Keyword(s):  
Distal Part ◽  
Morphological Characteristics ◽  
Molecular Data ◽  
Junior Synonym ◽  
Brazilian Coast ◽  
The Third ◽  
16S Gene ◽  
Morphological And Molecular Data ◽  
Antennular Peduncle

Abstract The genus OgyridesStebbing, 1914 comprises 12 recognized species of small marine shrimps distributed in tropical and temperate waters worldwide. Ogyrides occidentalis (Ortmann, 1893), described for Brazil, was considered a junior synonym of Ogyrides alphaerostris (Kingsley, 1880). The aim of this study was to revalidate O. occidentalis from the Brazilian coast based on morphological and molecular data (16S gene), and to provide a redescription, illustrations and a comparison with congeners. As expected, O. occidentalis is close to O. alphaerostris but can be separated by molecular data, the proportional size of the second article of the antennular peduncle in relation to the third article (3–4 times as long as the former, and 2–2.5 times as long as the latter), and the size of the scaphocerite (not reaching the distal part of the second article of the antennular peduncle in O. occidentalis, while always reaching or sometimes overreaching the distal part of the second article of the antennular peduncle in O. alphaerostris). We also provided a table comparing key morphological characteristics of all known species of the genus, and discuss the validity of thelycum-like characters in the taxonomy of Ogyrides.

Revision of the genus Polyeunoa McIntosh, 1885 (Polychaeta, Polynoidae)

Zootaxa ◽  
2012 ◽  
Vol 3523 (1) ◽  
pp. 25 ◽  
Author(s):  
RUTH BARNICH ◽  
MARIA CRISTINA GAMBI ◽  
DIETER FIEGE
Keyword(s):  
Southern Ocean ◽  
Cold Water ◽  
Junior Synonym ◽  
Type Material ◽  
Valid Species ◽  
Similar Species ◽  
The Third ◽  
The Past

Long-bodied polynoids, like Polyeunoa laevis McIntosh, 1885 and similar species which are often associated with cold-water corals, are regularly reported from Antarctic, Subantarctic and adjacent cold-temperate waters. The taxonomy ofthese species is confused and has been subject to various discussions in the past. For the revision presented here weexamined the available type material and additional specimens of the following species: Polynoe antarctica Kinberg,1858, Polyeunoa laevis McIntosh, 1885, Enipo rhombigera Ehlers, 1908, Hololepidella flynni Benham, 1921, Polyeunoedubia Hartmann-Schröder, 1965, Polyeunoa monroi Averincev, 1978, and Polynoe thouarellicola Hartmann-Schröder,1989. As a result we consider Polyeunoa laevis McIntosh, 1885, Parapolyeunoa flynni (Benham, 1921) n. comb., andNeopolynoe antarctica (Kinberg, 1858) n. comb. as valid species. Enipo rhombigera Ehlers, 1908, Polyeunoe dubiaHartmann-Schröder, 1965, and Polynoe thouarellicola Hartmann-Schröder, 1989 are junior synonyms of Polyeunoalaevis. Polyeunoa monroi Averincev, 1978 is a junior synonym of Hololepidella flynni Benham, 1921 for which the newgenus Parapolyeunoa n. gen. is erected. Polynoe antarctica Kinberg, 1858 is transferred to the genus NeopolynoeLoshamn, 1981 and represents the third known species within this genus. Three comprehensive tables illustrating the distinctive characters of the considered genera and species are given to facilitate the identification of the valid species.Keywordstaxonomy, Polyeunoa, Parapolyeunoa n. gen., Neopolynoe, Southern Ocean, SOAP workshop, cold-water corals

Heptacarpus Pictus (Stimpson) Synonymized With Heptacarpus Sitchensis (Brandt) (Decapoda, Hippolytidae)

Crustaceana ◽  
1996 ◽  
Vol 69 (1) ◽  
pp. 71-75 ◽  
Author(s):  
Michael Fagarason ◽  
Robyn Flynn ◽  
Mary K. Wicksten
Keyword(s):  
British Columbia ◽  
Baja California ◽  
Junior Synonym ◽  
Monterey Bay ◽  
The Third ◽  
Point Conception ◽  
The Right

AbstractHeptacarpus pictus (Stimpson, 1871) has been thought to be distinct from H. sitchensis (Brandt, 1851) based on the epipods: the former having epipods on the third maxillipcds and first and second pereopods, the latter having epipods on the third maxillipeds and first pereopods but not the second pereopods. The relative lengths of the antennular and antennal peduncles and the third maxillipeds to each other have been mentioned to be different in the two species. However, the description by Stimpson states that epipods of H. pictus were present on the first pereopods, not the second; the existing syntype of the species does not have epipods on the second pereopods. Study of over 280 specimens from British Columbia, Canada; California, U.S.A. and Baja California, Mexico, shows that individuals with epipods on the third maxillipeds and first pereopods occur throughout the range and that specimens also with epipods on the second pereopods occur in Monterey Bay and south of Point Conception, California. One individual was found with epipods on the third maxillipeds and first pereopods on both sides and an epipod on the second pereopod on the right side only. No other consistent differences in habitat, color or morphology were found between the specimens. We conclude that H. pictus is a junior synonym of H. sitchensis, and that shrimp with epipods on the second pereopods as well as the third maxillipeds and first pereopods constitute a morph of H. sitchensis.

Progress report on 21-cm observations at low latitude between longitudes (l 11) 0° and 66°

1967 ◽  
Vol 31 ◽  
pp. 177-179
Author(s):  
W. W. Shane
Keyword(s):  
Preliminary Report ◽  
Progress Report ◽  
Galactic Centre ◽  
Low Latitude ◽  
The Third ◽  
Introductory Lecture ◽  
Centre Region

In the course of several 21-cm observing programmes being carried out by the Leiden Observatory with the 25-meter telescope at Dwingeloo, a fairly complete, though inhomogeneous, survey of the regionl11= 0° to 66° at low galactic latitudes is becoming available. The essential data on this survey are presented in Table 1. Oort (1967) has given a preliminary report on the first and third investigations. The third is discussed briefly by Kerr in his introductory lecture on the galactic centre region (Paper 42). Burton (1966) has published provisional results of the fifth investigation, and I have discussed the sixth in Paper 19. All of the observations listed in the table have been completed, but we plan to extend investigation 3 to a much finer grid of positions.

The orbit of Pluto over a long interval of time

1966 ◽  
Vol 25 ◽  
pp. 227-229 ◽  
Author(s):  
D. Brouwer
Keyword(s):  
Periodic Orbit ◽  
Numerical Integration ◽  
Restricted Problem ◽  
Three Dimensional ◽  
The Third ◽  
Circular Restricted Problem ◽  
Resonance Relation

The paper presents a summary of the results obtained by C. J. Cohen and E. C. Hubbard, who established by numerical integration that a resonance relation exists between the orbits of Neptune and Pluto. The problem may be explored further by approximating the motion of Pluto by that of a particle with negligible mass in the three-dimensional (circular) restricted problem. The mass of Pluto and the eccentricity of Neptune's orbit are ignored in this approximation. Significant features of the problem appear to be the presence of two critical arguments and the possibility that the orbit may be related to a periodic orbit of the third kind.

Monte Carlo Algorithms for Moments of Transition Arrays

1988 ◽  
Vol 102 ◽  
pp. 79-81
Author(s):  
A. Goldberg ◽  
S.D. Bloom
Keyword(s):  
Monte Carlo ◽  
State Vector ◽  
Basis Vector ◽  
Collective State ◽  
Dispersion Characteristics ◽  
Dipole Strength ◽  
The Third ◽  
Monte Carlo Algorithms ◽  
Third Moment ◽  
Very High

AbstractClosed expressions for the first, second, and (in some cases) the third moment of atomic transition arrays now exist. Recently a method has been developed for getting to very high moments (up to the 12th and beyond) in cases where a “collective” state-vector (i.e. a state-vector containing the entire electric dipole strength) can be created from each eigenstate in the parent configuration. Both of these approaches give exact results. Herein we describe astatistical(or Monte Carlo) approach which requires onlyonerepresentative state-vector |RV> for the entire parent manifold to get estimates of transition moments of high order. The representation is achieved through the random amplitudes associated with each basis vector making up |RV>. This also gives rise to the dispersion characterizing the method, which has been applied to a system (in the M shell) with≈250,000 lines where we have calculated up to the 5th moment. It turns out that the dispersion in the moments decreases with the size of the manifold, making its application to very big systems statistically advantageous. A discussion of the method and these dispersion characteristics will be presented.

Probe size and 5th-order aberration

1987 ◽  
Vol 45 ◽  
pp. 134-135 ◽  
Author(s):  
Zhifeng Shao
Keyword(s):  
Electron Probe ◽  
Spherical Aberration ◽  
Wave Length ◽  
Cylindrical Symmetry ◽  
Electron Wave ◽  
Third Order ◽  
The Third ◽  
Probe Radius ◽  
Small Probe ◽  
Probe Size

A small electron probe has many applications in many fields and in the case of the STEM, the probe size essentially determines the ultimate resolution. However, there are many difficulties in obtaining a very small probe.Spherical aberration is one of them and all existing probe forming systems have non-zero spherical aberration. The ultimate probe radius is given byδ = 0.43Csl/4ƛ3/4where ƛ is the electron wave length and it is apparent that δ decreases only slowly with decreasing Cs. Scherzer pointed out that the third order aberration coefficient always has the same sign regardless of the field distribution, provided only that the fields have cylindrical symmetry, are independent of time and no space charge is present. To overcome this problem, he proposed a corrector consisting of octupoles and quadrupoles.

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