scholarly journals Notes on the Genus Rhipicephalus, with the Description of New Species, and the Consideration of some Species hitherto described

Parasitology ◽  
1912 ◽  
Vol 5 (1) ◽  
pp. 1-20 ◽  
Author(s):  
Cecil Warburton

The identification of species of Rhipicephalus is likely to give more trouble than is the case with any other genus of Ixodidae, for while, on the one hand, there are few species which depart greatly from the general type, on the other hand the range of variation within the species is extremely great. In no genus is it so dangerous to describe a new species from a single individual, especially if the specimen be a female.

Zootaxa ◽  
2018 ◽  
Vol 4482 (1) ◽  
pp. 151 ◽  
Author(s):  
NUKUL SAENGPHAN ◽  
BHINYO PANIJPAN ◽  
SAENGCHAN SENAPIN ◽  
PARAMES LAOSINCHAI ◽  
PINTIP RUENWONGSA ◽  
...  

A small freshwater prawn in Thailand has been found to be a new species and is named Macrobrachium suphanense (Decapoda: Palaemonidae). Fully grown male M. suphanense appeared very different from the most closely related male of M. sintangense: size smaller, second pereiopod smaller and less robust, rostrum form different and, in females, fewer eggs. Less closely related, fully grown M. dolatum has sharper distal cutting edge on fixed finger and M. hungi has longer rostrum than M. suphanense. DNA analyses put M. suphanense, M. sintangense and M. nipponense in the same clade with M. nipponense sister to the other two. Two more clades consist of M. dienbienphuense and M. niphanae on the one hand and M. lanchesteri and M. rosenbergii on the other. The relationship among the three clades is not clearly resolved. 


Phytotaxa ◽  
2014 ◽  
Vol 184 (2) ◽  
pp. 115 ◽  
Author(s):  
Marina Potapova

A new species of Encyonema was found in several rivers and reservoirs in Western Pennsylvania, USA, in 2013. The new species, E. appalachianum, has only very slightly dorsiventral valves, which is one of the characters separating the genus Encyonopsis from Encyonema. On the other hand, the long, sharply bent terminal raphe fissures and lateral raphe indicate that it should be placed in Encyonema. Some valves with occasionally biseriate striae have been observed in the type population of the new species. The finding of this species that apparently combines features of both Encyonema and Encyonopsis highlights the problem of poorly defined boundaries between some genera of cymbelloid diatoms.


1871 ◽  
Vol 8 (90) ◽  
pp. 540-544 ◽  
Author(s):  
William Carruthers

It is a singular coincidence that in a former communication to this Magazine (Vol. VI., p. 1) I described, among other Coniferous fruits, two from the Gault at Folkestone, the one the cone of a pine, and the other of a Wellingtonia, and that in this communication I propose to describe two hitherto unknown fruits from the same deposit and found at the same locality, belonging also the one to a Wellingtonia and the other to a pine. Although the small pinecone already described (Pinites gracilis) differs in form and in the arrangement of the scales from any known cone, recent or fossil, it is more nearly related to that group of the section Pinea, the members of which are now associated with the Wellingtonias in the west of North America, than with any other member of the great genus Pinus. I, however, hesitated to refer to this interesting fact, because the occurrence of the two cones in the Gault might have been due to their being accidentally brought into the same silt by rivers having widely separated drainage areas. And it is easier to keep back generalizations based on imperfect data, than to suppress them after publication, when in the progress of investigation they are shown to be false. But I have now to describe a second pinecone more closely related to the Californian species of Pinea, and with it a new species of Wellingtonia. These surely point with tolerable certainty to the existence of a Coniferous vegetation on the high lands of the Upper Cretaceous period having a fades similar to that now existing in the mountains on the west of North America, between the thirtieth and fortieth parallels of latitude. No fossil referable to Sequoia has hitherto been found in strata older than the Gault, and here on the first appearance of the genus we find it associated with pines of the same group that now flourish by its side in the New World.


Phytotaxa ◽  
2015 ◽  
Vol 219 (1) ◽  
pp. 58 ◽  
Author(s):  
Itzi Fragoso-Martínez ◽  
Martha Martínez-Gordillo ◽  
Efraín De Luna

A new species of Salvia section Lavanduloideae from the Estado de México is described and illustrated. Salvia semiscaposa is a procumbent plant morphologically similar to S. scaposa and S. helianthemifolia. It differs from the former by having mostly obovate leaf blades, more than six flowers per verticillaster and posterior calyx lobes narrower and apiculate. On the other hand, S. helianthemifolia differs from the new species by the presence of an erect stem, ovate leaves and trichomes on the calyx surface distributed only on the veins.


1995 ◽  
Vol 127 (2) ◽  
pp. 177-193 ◽  
Author(s):  
Joyce Cook ◽  
H.F. Howden ◽  
S.B. Peck

AbstractThe endemic Galápagos’ genus Neoryctes Arrow has had a confused nomenclatorial and taxonomic history. Evaluation of morphological variation in the 41 specimens now available confirms the distinctiveness of the genus and establishes the existence of four species, each restricted to a single island. The original Darwin specimen, named Oryctes galapagoensis by G.R. Waterhouse in 1845, is shown to be from Isla Santiago. Two other names are valid: N. linelli Mutchler for the population on San Cristobal and N. moreti Dechambre for the one on Santa Cruz. The population on Floreana is named as a new species, N. williamsi. Neoryctes most likely originated from a Pentodontini dynastine ancestor from lowland South or Central America. The ancestor first dispersed to Isla San Cristobal, one of the oldest islands. It is hypothesized that before hindwing reduction occurred, which is now characteristic of all members of the genus, individuals from San Cristobal spread to the other islands. Subsequently, possibly during periods of Pleistocene aridity, each population became restricted to its present range in the moist highland zone of an individual island.


Fossil Record ◽  
2020 ◽  
Vol 23 (1) ◽  
pp. 71-74
Author(s):  
Lu Chen ◽  
Dong Ren ◽  
Olivier Béthoux

Abstract. A new species of stem Orthoptera, namely Phtanomiamia gui gen. et sp. nov., is described from the Pennsylvanian Xiaheyan locality in China. Despite the intensive collecting efforts undertaken at this locality, a single forewing was recovered. It shares with the “lobeattid” Miamia spp. two peculiar traits, namely a broad ScP–R/RA area and a very early branching of CuA + CuPa. On the other hand, it displays a free portion of CuA (between its divergence from M + CuA and its fusion with CuPa), a trait allowing exclusion of the new species from Miamia, to which it is most likely very closely related.


PhytoKeys ◽  
2018 ◽  
Vol 113 ◽  
pp. 69-77 ◽  
Author(s):  
Paúl Gonzáles ◽  
Asunción Cano ◽  
Harold Robinson

A little herb from central Peru is recognised as a new species of a new genus. Centenariarupacquiana belongs to the tribe Eupatorieae, subtribe Piqueriinae. It has asymmetrical corollas with two inner lobes smaller, a flat and epaleaceous receptacle and the presence of pappus. In Peru, Centenaria is related to the genera Ferreyrella and Ellenbergia, but Ferreyrella is different by having no pappus and a paleate receptacle; and on the other hand, Ellenbergia is different by having symmetrical corollas.


2020 ◽  
Vol 35 ◽  
pp. 65-78
Author(s):  
Javier I. Arbea ◽  
Toni Pérez Fernández

A new species of cavernicolous Collembola belonging to the genus Hypogastrura Bourlet, 1839 from “Sima Miguel Ángel Blanco” (Jaén, Spain) is described: Hypogastrura herrerosvelaisp. nov. belongs to the H. monticola group of species within the genus and is easy to distinguish from its three relatives, Hypogastrura monticola Stach, 1946, H. hispanica Steiner, 1955 and H. dasiensis Selga, 1966, by the dorsal chaetotaxy. On the other hand, the presence of the species Hypogastrura socialis (Uzel, 1890) in the Iberian Peninsula is confirmed.


2005 ◽  
Vol 176 (6) ◽  
pp. 545-557 ◽  
Author(s):  
Jean-Christophe Dudicourt ◽  
Didier Neraudeau ◽  
Philippe Nicolleau ◽  
Luc Ceulemans ◽  
Frédéric Boutin

Abstract New investigations in the Pliocene deposits of Challans (Vendée) have allowed to collect more than 3000 marsupiate echinoids, remarkably preserved. So, apical systems, especially the marsupium of the breeding temnopleurids T. (V.) bigoti and C. bardini, have been described and figured for the first time with complete specimens. Two new marsupiate species have been described: Arbacina hugueti nov. sp., third marsupiate species of the genus Arbacina to be known in the Neogene of western France after A. emmae NÉRAUDEAU, 2003 from the Messinian of Brittany and A. pareyni ROMAN, 1983 from the Pliocene of Normandy; Tremaster romani, new species and genus of temnopleurid, characterised by an uncommon supra-ambital tuberculation, with excressences of the test surrounding scrobiculated tubercles. A third new marsupiate echinoid, Coptechinus sp. A, has been found too, but it is very difficult to know if it is a new species or a new morphotype of C. bardini. Contrarily to previous interpretations, this study points out the high diversity of western European Neogene marsupiate echinoids, a diversity comparable to the one of Australian Neogene marsupiate echinoids. However, breeding species from Australia and western Europe are clearly different and similarities exist between these two marsupiate echinofaunas at the family level only. Indeed, both in Australia and western Europe, the breeding species of echinoids mainly belong to the temnopleurid family, with the austral genus Paradoxechinus, on the one side, the north European genera Temnotrema and Coptechinus, on the other side. Moreover, the arbaciids consist of three marsupiate species of the genus Arbacina in Europe when no breeding species of this family exist in Australia. On the contrary, several breeding irregular echinoids have been found in the Australian Tertiary deposits (Spatangoids and Clypeasteroids) when not any marsupiate irregular echinoid has been discovered at present in the western Europe Neogene deposits.


Two distinct species appear to have been confused by James-Clark in his original description of Bicoeca lacustris . The two forms have been re-examined and photographed. It is suggested that the differences between them justify their separation into two species, as suggested by Stoic, the one form to retain the name B. lacustris , the other to receive that of B. vacillans Stoic. A new species, B. maris , is described, and the affinities of the Bicoecidae, Bodonidae and Craspedomonadidae are discussed.


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