scholarly journals Description of a new species of Rhinocoeta Burmeister, 1842 (Scarabaeidae, Cetoniinae) from the South African Northern Cape

ZooKeys ◽  
2019 ◽  
Vol 848 ◽  
pp. 41-56
Author(s):  
Renzo Perissinotto

Rhinocoetanamaquasp. nov. is recognised as a separate species from its closest relative, R.cornuta (Fabricius, 1781) after a review and close analysis of specimens recently collected in the semiarid region of the Northern Cape Province, South Africa. The new species can be readily separated from R.cornuta by the drastically reduced tubercle and associated depression on its anterior pronotal margin, particularly in the male. In addition, the general body shape of R.namaqua is more globose than that of R.cornuta, its average total length is larger, and its elytral costae are generally reduced and poorly visible, particularly at the level of the umbones. These characteristics make it practically impossible to separate the two sexes of R.namaqua, without inspection of the internal reproductive organs, as their external morphologies are virtually identical, unlike in R.cornuta. Finally, the aedeagal parameres of R.namaqua exhibit a narrower apex than those of R.cornuta and, in particular, lack the subapical hook-shaped lateral expansions that are so typical of all the other Rhinocoeta s. str. species. The new species appears to be restricted to specific bioregions of the Succulent and Nama Karoo biomes of the Northern Cape, and like all other species of the genus is generally found on or under mammal herbivore dung. Adult activity is limited to short periods immediately after rainfall events, during which individuals fly around and mate, but do not feed on either fruits or flowers.

2013 ◽  
Vol 88 (2) ◽  
pp. 166-172 ◽  
Author(s):  
A. Avenant-Oldewage ◽  
L.E. le Roux ◽  
S.N. Mashego ◽  
B. Jansen van Vuuren

AbstractA new species, Paradiplozoon ichthyoxanthon (Monogenea: Diplozoidae) is described from the gills of Labeobarbus aeneus (Cyprinidae) in the Vaal Dam and Vaal River Barrage in the Vaal River, South Africa. This species is the first in this genus from southern Africa; Paradiplozoon aegtyptense and Paradiplozoon ghanense have been described from northern Africa. The new species differs from all other Paradiplozoon species on the basis of the combination of morphological characteristics, namely disk-like haptor, eggs without filaments, clamp and central hook morphology and size of specimens. The species description is accompanied by a description of the reproductive organs. The internal transcribed spacer of the ribosomal gene (ITS2) was studied and the South African individuals formed a distinct clade, supporting the establishment of a new species.


Phytotaxa ◽  
2015 ◽  
Vol 219 (2) ◽  
pp. 174
Author(s):  
Fabiana Firetti Leggieri ◽  
DIEGO DEMARCO ◽  
LÚCIA G. LOHMANN

The Atlantic Forest of Brazil includes one of the highest species diversity and endemism in the planet, representing a priority for biodiversity conservation. A new species of Anemopaegma from the Atlantic Forest of Brazil is here described, illustrated and compared to its closest relatives. Anemopaegma nebulosum Firetti-Leggieri & L.G. Lohmann has been traditionally treated as a morph of Anemopaegma prostratum; however, additional morphological and anatomical studies indicated that A. nebulosum differs significantly from A. prostratum and is best treated as a separate species. More specifically, A. nebulosum is characterized by elliptic and coriaceous leaflets (vs. ovate to orbicular and membranaceous in A. prostratum), smaller leaflet blades (3.6–5.5 x 2.0–3.0 cm vs. 6.7–13.0 x 4.2–8.4 cm in A. prostratum), orbicular prophylls of the axillary buds (vs. no prophylls in A. prostratum), solitary flowers (vs. multi-flowered axillary racemes in A. prostratum) and a gibbous corolla (vs. infundibuliform corollas in A. prostratum). In addition, A. nebulosum differs from A. prostratum anatomically in having thicker leaflet blades composed of two to four layers of palisade parenchyma (vs. one to three layers in A. prostratum), and seven to eight layers in the spongy parenchyma (vs. six to eight layers in A. prostratum). A key for the identification of all species of Anemopaegma from the Atlantic Forest of Brazil is presented.


2021 ◽  
Vol 26 (2) ◽  
Author(s):  
Luan Pedro-Silva ◽  
Thaynara Sousa Silva ◽  
José Iranildo Miranda De Melo

Phytotaxa ◽  
2018 ◽  
Vol 344 (1) ◽  
pp. 99 ◽  
Author(s):  
ESTRELA FIGUEIREDO ◽  
GIDEON F. SMITH

Centaurea crocata Franco (1984: 474, 572) is the name currently used for a species of Asteraceae that is endemic to a small area in the southwest of Portugal, extending from Monchique (Algarve) to Cercal (Baixo Alentejo). The plant was first collected by Friedrich Welwitsch in 1847, in Monchique, during his residence (1847–1848) in the province of Algarve (Trimen 1873: 3). The following year he collected it again but further north, in Baixo Alentejo. Welwitsch regarded it as a new species and informally named it ‘Centaurea crocea’, as is apparent from the name written on his specimens of this species that are held in LISU (Garcia Jacas & Susanna 1991). However, he never published this name. Later authors working on the flora of Portugal, such as Sampaio (1909: 60, 1947: 597) and Coutinho (1913: 657, 1939: 776) misidentified Welwitsch’s and other collectors’ material as C. prolongoi Boissier ex Candolle (1838: 303, originally published as ‘prolongi’, corrected to ‘prolongoi’ as it commemorates the Spanish botanist Pablo Prolongo y Garcia). It was only much later that Franco (1984), in the second volume of his Flora of Portugal, concurred with Welwitsch’s view that the material belonged to a separate species and described it as C. crocata, using an epithet similar to that of Welwitsch’s unpublished name. Both epithets ‘crocata’ and ‘crocea’ originate from Latin and mean saffron-coloured. Saffron is a product of a species of the genus Crocus Linnaeus (1753: 36), a name with the same origin.


Author(s):  
Maxim V. Nabozhenko

Ectromopsis merkli sp. n. (Coleoptera: Tenebrionidae: Helopini) is described from Central Anatolia (coast of Eğirdir Lake). The species is the most similar to E. tantilla Ménétriés, 1848 from the Caspian depression (European Russia, West Kazakhstan) and differs in the body shape, structure of genae, the shape of pronotum and elytral punctation. Brief information about a relic type of distribution, trophic associations and adaptations of Ectromopsis spp. are given, as well as a key to species from the eastern part of the range. With seven figures.


ZooKeys ◽  
2020 ◽  
Vol 973 ◽  
pp. 89-101
Author(s):  
Alexey V. Shavrin ◽  
Shûhei Yamamoto

An unusual new omaliine species, Anthobium alekseevisp. nov., is described and illustrated from Eocene Baltic amber, tentatively placed in the megadiverse genus Anthobium Leach, 1819. A new monotypic species-group is established. The new species can easily be distinguished from other species of the genus by the larger body, shape of the subrectangular pronotum, and the presence of a median carina on the prosternum and large, subtriangular tooth on the inner side of each mesotibia, likely exhibiting a peculiar sexual dimorphism in the male. Based on the study of the specimen with support of microtomographic images, a brief comparative analysis of a new species with described extant species of Anthobium is provided.


Phytotaxa ◽  
2015 ◽  
Vol 206 (1) ◽  
pp. 74 ◽  
Author(s):  
Jomar Gomes Jardim ◽  
CRISTINA BESTETTI COSTA

Standleya glomerulata, a new species and a first record for the semiarid region of Bahia, Brazil, is described and illustrated. It differs from all other known species of the genus by its prostrate decumbent and reptant habit, glomerulate sessile inflorescences, and a calyx with two unequal lobes. S. prostrata has a similar habit, but can be distinguished by the pedunculate inflorescences and a calyx with four equal lobes. The new species is known from only a few localities in two protected areas and must therefore be considered threatened.


Zootaxa ◽  
2017 ◽  
Vol 4258 (6) ◽  
pp. 581 ◽  
Author(s):  
FRANCIANE CEDROLA ◽  
ROBERTO JÚNIO PEDROSO DIAS ◽  
ISABEL MARTINELE ◽  
MARTA D’AGOSTO

To date the genus Diploplastron comprised only one species of ophryoscolecid ciliate, Diploplastron affine, which is characterized by having two retractable ciliary zones in the anterior end of the body, two slender and juxtaposed skeletal plates on the right side, a rod shape macronucleus, and two contractile vacuoles. During study on the characterization of rumen ciliate community composition in Brazilian domestic sheep, we observed ciliates with atypical morphology but with diagnostic features of genus Diploplastron. This study describes Diploplastron dehorityi, a new species of ophryoscolecid ciliate, that differs from D. affine, primarily, in the morphology of skeletal plates, morphology of nuclear apparatus and body shape. In addition to the similarities between the new species and congener species, D. dehorityi has some morphological similarities to species of genus Eremoplastron.


Crustaceana ◽  
2021 ◽  
Vol 94 (9) ◽  
pp. 1071-1084
Author(s):  
C. Nahxieli Reyes-González ◽  
Eduardo Suárez-Morales

Abstract A new species of the diverse and widely distributed symbiotic copepod genus Asterocheres is described from the sea star Nidorellia armata (Gray, 1840) in Mexican waters of the Eastern Tropical Pacific. The new species resembles various other congeners by sharing several characters including: (1) a siphon extending to the intersection of the maxilliped, (2) a 21-segmented antennule, and (3) a 2-segmented mandible palp. It can be distinguished by the unique structure and ornamentation of the maxilla, the armature and proportions of the fifth leg, and its body shape. This is the first documented record of Asterocheres from the Mexican Pacific and the first finding of a symbiotic copepod on this sea star host. Males, ovigerous females and copepodites were recorded from the host, thus suggesting a well-established symbiotic association. It is likely that copepods feed on the host’s tegument. Further studies will be needed to assess the reproductive traits and seasonality of this copepod as a symbiont.


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