Encyonema appalachianum (Bacillariophyta, Cymbellaceae), a new species from Western Pennsylvania, USA

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.

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.


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.


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.


1961 ◽  
Vol S7-III (5) ◽  
pp. 468-473
Author(s):  
Gerard Thomel

Abstract The lower Cretaceous of the vicinity of Nice in southeastern France is very thin, and has many stratigraphic breaks in the Valanginian and Aptian stages. Ammonites of the Hauterivian, Barremian, and Albian stages, on the other hand, are diversified and well represented. A new species of ammonite, Lyticoceras corroyi n. sp., was found in the Hauterivian of Rayet, near Falicon, Maritime Alps.


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.


Zootaxa ◽  
2011 ◽  
Vol 2804 (1) ◽  
pp. 25 ◽  
Author(s):  
BRYAN L. STUART ◽  
JODI J. L. ROWLEY ◽  
DAO THI ANH TRAN ◽  
DUONG THI THUY LE ◽  
HUY DUC HOANG

We sampled two forms of Leptobrachium in syntopy at the type locality of L. pullum at upper elevations on the Langbian Plateau, southern Vietnam. The two forms differed in morphology (primarily in coloration), mitochondrial DNA, and male advertisement calls. One form closely agrees with the type series of L. pullum (but not to its original description due to error), and the other is described as new. Leptobrachium leucops sp. nov. is distinguished from its congeners by having small body size (males with SVL 38.8–45.2), the upper one-third to one-half of iris white, a blue scleral arc, a dark venter, and sexually active males without spines on the upper lip. Leptobrachium pullum and L. mouhoti, a recently described species from low-elevation slopes of the Langbian Plateau in eastern Cambodia, are morphologically divergent but genetically similar, warranting further investigation into geographic variation in the red-eyed Leptobrachium of southern Indochina.


Phytotaxa ◽  
2016 ◽  
Vol 257 (3) ◽  
pp. 280 ◽  
Author(s):  
Hao Zhou ◽  
Si-rong Yi ◽  
Qi Gao ◽  
Jie Huang ◽  
Yu-jing Wei

Aspidistra revoluta (Asparagaceae) is described and illustrated as a new species from limestone areas in southern Chongqing Municipality, China. The new species can be distinguished from the other Aspidistra species by its unique umbrella-like pistil with large revolute stigma lobes that bent downwards and touch the base of the perigone. A detailed morphological comparison among A. revoluta, A. nanchuanensis and A. carnosa is provided. The pollen grains of A. revoluta are subspherical and inaperturate, with verrucous exine. The chromosome number is 2n = 38, and the karyotype is formulated as 2n = 22m + 6sm + 10st. The average length of chromosome complement is 4.50 μm, and the karyotype asymmetry indexes A1 and A2 are respectively 0.37±0.03 and 0.49±0.01.


1953 ◽  
Vol 27 (1-2) ◽  
pp. 81-94 ◽  
Author(s):  
T. Goodey

1. A detailed morphological study has been made of certain nematodes occurring in the basidiomycetous fungi, Entoloma rhodipolium, Pleurotus corticalus, P. ostreatus, Hygrophorus virgineus and Tricholoma cunifolium.2. From the first three of these, males and females of two species of eelworms have been obtained which are placed in the genus Iotonchium Cobb, 1920. One of these is Iotonchium fungorum (Butschli, 1878) n. comb., originally described by Butschli under the name of Tylenchus fungorum', the other is a new species which is named I. bifurcatum n. sp.3. The males of both species have peculiar lobed, dorso-ventrally flattened heads and a poorly developed mouth spear. The bursa is very large, the spicules have posterior prolongations which arc extruded through the cloaca and ventral post-anal papillae are present. A gubernaculum is absent.


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