New species of small, bathypelagic calanoid copepods from the Arctic Ocean: Brodskius arcticus sp. nov. (Tharybidae) and three new species of Pertsovius gen. nov. (Discoidae)

Zootaxa ◽  
2011 ◽  
Vol 2809 (1) ◽  
pp. 33 ◽  
Author(s):  
VLADIMIR N. ANDRONOV ◽  
KSENIA N. KOSOBOKOVA

A new calanoid copepod species, Brodskius arcticus sp. nov. (family Tharybidae Sars, 1902), and three new species of a new genus Pertsovius gen. nov. (family Discoidae Gordejeva, 1975) are described from deep waters of the Arctic Canada Basin. The female of Brodskius arcticus differs from five of the other six known species of this genus in the absence of rostral filaments, the lack of which it shares with B. abyssalis Markhaseva & Schulz, 2007. This new species differs from B. abyssalis in having two very short outer proximal spines at the distal segment of the fifth swimming legs (P5). The length of these spines is less than half the width of the segment, whereas in B. abyssalis they are longer than the width of the segment. The new genus Pertsovius is created here for a group of seven species within the family Discoidae which have one-segmented endopods of Р 2-Р4. In contrast, the other genera of this family have three-segmented endopods of Р 2-Р4. The three new species of Pertsovius differ from each other in the appearance of the genital field, and in the number of outer border spines on the distal exopodal segment of P2. In Pertsovius tridentatus sp. nov. this segment bears three external spines on both left and right P2. The left Р 2 of P. heterodentatus sp. nov. has three spines, while the right Р 2 bears two spines only. The distal segments of both left and right Р 2 of P. serratus sp. nov. have two external spines, but the proximal part of the external margin on the left Р 2 bears three relatively large denticles. The distal exopodal segments of Р 2 of the other four species here transferred to the genus Pertsovius are smooth with no external spines or denticles, but each bears two outer border spines.

Diversity ◽  
2018 ◽  
Vol 10 (3) ◽  
pp. 71
Author(s):  
Debbie Jennings ◽  
Rolf Oberprieler

This paper presents the results of a study that was largely initiated to describe a genus and species of weevil damaging macadamia fruits in plantations in New South Wales and Queensland, Australia. This taxon is described as Kuschelorhynchus macadamiae gen. et sp. n., the genus named in honour of the late Guillermo (Willy) Kuschel (1918–2017). The related genus Menechirus Hartmann is also revised, resulting in the description of three new species, M. howdenae sp. n., M. parryi sp. n. and M. mundus sp. n. The other genera of the small Australian weevil tribe Cryptoplini, Cryptoplus Erichson, Haplonyx Schoenherr, Sigastus Pascoe and Zeopus Pascoe, are diagnosed and their host associations summarised, and a revised diagnosis of the tribe Cryptoplini is presented, together with a key to its six genera. The extraordinary aedeagus of Cryptoplini, featuring a tectal plate as is characteristic of more primitive weevils, is discussed and illustrated.


Zootaxa ◽  
2011 ◽  
Vol 3020 (1) ◽  
pp. 1
Author(s):  
CHUN-XIANG LIU ◽  
XIAN-WEI LIU

Elimaea Stål is a comparatively large genus in the subfamily Phaneropterinae, which is mostly characterized by symmetric exposed tibial tympana and commonly distributed in Asia. The genus includes 6 subgenera and 131 valid species. However, species diversity of the genus Elimaea has been occasionally investigated in China. Here we provide a checklist of 53 species in the genus Elimaea and its relative from China, among which 23 species are new to science. We also establish one new subgenus Rectielimaea subgen. nov. for the type species Elimaea (Rectielimaea) percauda sp. nov., which is distinguished from other subgenera by the phallus with a long log-like sclerite horizontally produced outwards. In addition, we consider that proximal part of MP+CuIP vein in tegminal dorsal part is possibly more or less different among species and subgenera: (a) straight in the subgenera Elimaea and Rectielimaea subgen. nov. and in the species Elimaea (Schizelimaea) mira Gorochov, 2009, or (b) more or less convex laterad in the other subgenera without exception of other species in the subgenus Schizelimaea. Necessary illustrations are provided.


Zootaxa ◽  
2018 ◽  
Vol 4514 (3) ◽  
pp. 301 ◽  
Author(s):  
BRUNO V. B. RODRIGUES ◽  
IGOR CIZAUSKAS ◽  
CRISTINA A. RHEIMS

Paracymbiomma gen. nov. is proposed to include six new species from Brazil: P. angelim sp. nov. (♂ ♀) from São Paulo, P. carajas sp. nov. (♂ ♀), P. bocaina sp. nov. (♂ ♀) and P. caecus sp. nov. (♂ ♀) from Pará, P. doisirmaos sp. nov. (♂) from Pernambuco and P. pauferrense sp. nov. (♂) from Paraíba. The genus is included in Theuminae by having the sternum with posterior region without rebordered margins, strongly protruding between coxae IV and with numerous long and erect setae, and by the vulva with highly convoluted ducts. It can be distinguished from the other members of the subfamily by the male palp with paracymbium, single RTA, bulb with sclerotized conductor and partly sclerotized median apophysis, and by the female epigyne with posteromedian atrium and sclerotized margin, and vulva with copulatory ducts long, strongly convoluted laterally with proximal part (closest to copulatory openings) translucent. Paracymbiomma carajas sp. nov., P. bocaina sp. nov. and P. caecus sp. nov. occur exclusively in ferruginous caves. We provide a discussion on specializations and adaptations of Paracymbiomma gen. nov. and other species of Prodidomidae to the subterranean environment. 


Zootaxa ◽  
2012 ◽  
Vol 3345 (1) ◽  
pp. 1 ◽  
Author(s):  
TERUE C. KIHARA ◽  
PEDRO MARTÍNEZ ARBIZU

Considered one of the most common harpacticoid families in deep-sea benthos, the Aegisthidae can be found in varioustypes of marine sediments and at different depths. During the fourth leg of the ninth expedition of RV Polarstern in theArctic Ocean (ARK-IX/4) in September 1993, three new representatives of the genus Cerviniella were collected in mul-ticorer samples from the Laptev Sea at depths of 760-2017 m. The new species have a close relationship, as indicated by thecombination of shared characters: distal segment of antennule with aesthetasc, antennary endopod with two setae and one spinelaterally, and four spines and three setae apically; and the same number of armature elements on the maxillula and maxilla.Cerviniella danae sp. nov. and C. hitoshii sp. nov. can be easily distinguished from their congeners primarily by the reductionof the antennules to only five segments, which is common to both species but unique in Cerviniella. Cerviniella danae sp. nov.is most readily separated from other described species by the armature of the antennule and maxilliped, and the spine and setaformulae of the swimming legs. For C. hitoshii sp. nov., major diagnostic differences are found in the maxilliped, segmentationand setation of P3 and P4 endopods, and P6 represented by three setae. Cerviniella arctica sp. nov. is unique in the combinationof the following characters: caudal rami extremely elongated, armature of the antennules and mandible, and the spine and setaformulae of the swimming legs. Based on a review of the literature, an updated listing of the P1-P4 armature and a key to species of the genus are presented.


2018 ◽  
Vol 94 ◽  
Author(s):  
L. Boudaya ◽  
L. Neifar ◽  
L. Euzet

AbstractThe spiral intestines of a total of 16 round fantail stingraysTaeniurops grabatafrom the Mediterranean Sea off Tunisia were examined for cestodes. A new genus is erected in the Anthocephaliidae (Rhinebothridea) asAlveobothriumgen. n., withAlveobothrium grabatumsp. n. as its type species; the new genus differs from the other genera in the order in that its members possess bothridia with an apical sucker, marginal loculi and multiple staggered rows of facial loculi.Alveobothrium zarzisensesp. n. is also described. The species differ in the number of marginal loculi and in proglotid anatomy. Another anthocephaliid belonging to the genusAnthocephalumis also described fromT. grabata. Anthocephalum jeancadenatisp. n. is most similar toA. alicaeandA. michaeli, but differs in size of terminal proglottid and number of proglottids. All these new species are also found in formalin-preserved cestodes fromT. grabatacollected at Gorée Island (Senegal) between 1946 and 1954 by the French ichthyologist J. Cadenat and conserved in the personal collection of the late L. Euzet. The presence of the same rhinebothriideans species parasitizingT. grabatain both the Mediterranean (Tunisia) and the eastern Atlantic (Senegal) is discussed.


1914 ◽  
Vol 1 (1) ◽  
pp. 5-8 ◽  
Author(s):  
W. D. Lang

In a report on a visit of the Geologists' Association to the exhibits of Polyzoa and Corals in the Geological Department of the British Museum in February, 1913, the author had occasion to mention two related and unnamed species of uniserial Chalk Polyzoa that hitherto had appeared in records as Hippothoa dispersa (von Hagenow). neither of which was this species, nor did either belong to the genus Hippothoa, Lamouroux. Since one of these two forms is very common in the English Chalk and the other not rare, it is time for a description of them to be published, that collectors may have distinctive names for them. In addition, a third form that has occurred in England is described, and the rest of the species included in the genus are mentioned, so that an idea of the genus as a whole may be formed.


Taxonomy ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 60-68
Author(s):  
Jun Souma ◽  
Shûhei Yamamoto ◽  
Yui Takahashi

A total of 14 species in seven tingid genera have been described from the mid-Cretaceous Burmese (Kachin) amber from northern Myanmar, with very distinct paleofauna. Here, a new species of a new genus, Burmavianaida anomalocapitata gen. et sp. nov., is described from Kachin amber. This new species can be readily distinguished from the other described tingid taxa by the apparently smaller body and the structures of the pronotum and hemelytron. Burmavianaida gen. nov. shares the diagnostic characters with two clades composed of three extant subfamilies (Cantacaderinae + Tinginae) and Vianaidinae and may represent an extinct clade distinct from them. To the best of our knowledge, B. anomalocapitata sp. nov. is the smallest species of Tingidae among over 2600 described species. Our new finding supports the hypothesis of the miniaturization phenomenon of insects in Kachin amber, as suggested by previous studies.


2016 ◽  
Vol 90 (5) ◽  
pp. 981-1011 ◽  
Author(s):  
Gregg F. Gunnell ◽  
John-Paul Zonneveld ◽  
William S. Bartels

AbstractFieldwork conducted in the Wasatch Formation in and around Fossil Butte has yielded a diverse assemblage of early Eocene vertebrates. Fossil vertebrates are distributed through three discrete stratigraphic intervals within the uppermost 180 m of the main body of the Wasatch Formation underlying the Green River Formation. These assemblages were derived primarily from fluvial overbank mudstone units overprinted with variably well-developed paleosols. The lowest (20 m) and highest (60 m) sections are characterized by less mature and more hydromorphic paleosols, whereas the middle section (100 m) is typified by more mature paleosols and more abundant channel sandstones.The combined assemblages contain at least 46 species of mammals. Faunal characteristics include high abundances of equid perissodactyls and a relatively high abundance and diversity of notharctines primates, an apparent absence of omomyid primates, relatively high rodent diversity, and relatively diverse and abundant artiodactyls. One new genus (Eoictopsnew genus) and three new species (Eoictops novacekinew species,Palaeosinopa lacusnew species, and ?Notoparamys blochinew species) are included in the Fossil Butte assemblage. Also recorded are late occurrences of two hyopsodontid condylarths and an early occurrence of a rare phenacodontid condylarth. The relatively high abundances of equids and notharctines suggest that vertebrate samples were derived from relatively open paleohabitats that included forested areas along water courses.All three assemblages contain characteristic Lysitean (Wasatchian biochron Wa-6) elements, but the occurrence of the palaeotheriid perissodactylLambdotheriumin the uppermost horizon indicates a Lostcabinian (Wa-7) age for at least the top of the Wasatch Formation. The overlying predominantly fish-bearing Fossil Butte Member of the Green River Formation also containsLambdotheriumand is therefore Wa-7 in age as well.


2011 ◽  
Vol 143 (6) ◽  
pp. 594-611
Author(s):  
Stephen D. Gaimari

AbstractThe unusual new Neotropical genus Exalla is described and illustrated, along with three new species, E. browni, E. macalpinei, and E. shewelli. A key to the species is provided. The species are known from wet montane rainforest habitats in Colombia and Ecuador at elevations above 1500m.


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