Morphology of the oxyurid nematodesTrypanoxyuris (T.) cacajaon. sp. andT. (T.) ucayaliin. sp. from the red uakari monkeyCacajao calvus ucayaliiin the Peruvian Amazon

2015 ◽  
Vol 90 (4) ◽  
pp. 483-493 ◽  
Author(s):  
D.F. Conga ◽  
E.G. Giese ◽  
N.M. Serra-Freire ◽  
M. Bowler ◽  
P. Mayor
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Sexual Dimorphism ◽  
Peruvian Amazon ◽  
Isolated Populations ◽  
North Eastern ◽  
Two New Species ◽  
Distinct Morphology ◽  
Scanning Electron

AbstractCacajao calvus ucayalii(Thomas, 1928) (Primates: Pitheciidae), a subspecies endemic to the Peruvian Amazon, occurs in patchy and sometimes isolated populations in north-eastern Peru and is in a vulnerable situation, mainly due to habitat loss and hunting. This rareness and remote distribution means that, until now, parasitical studies have been limited. Based on optical and scanning electron microscopy of specimens of both sexes, we report two new species ofTrypanoxyurispinworms occurring in the large intestine of the Peruvian red uakari, namelyTrypanoxyuris (Trypanoxyuris) cacajaoandTrypanoxyuris (Trypanoxyuris) ucayalii. Both species showed a distinct morphology of the lips and cephalic structure. Sexual dimorphism in the lateral alae was observed in both male and the female worms, with ventral ornamentation being shown in the oesophageal teeth. The finding of these new pinworm species highlights the possibility of discovering other species.

The genus Navicula (Bacillariophyceae, Naviculaceae) from the valley of the Adegoy River (Krasnodar Territory, Russia) and description of two new species

Phytotaxa ◽  
2021 ◽  
Vol 494 (2) ◽  
pp. 208-218
Author(s):  
DMITRY CHUDAEV ◽  
INGRID JÜTTNER ◽  
ZLATKO LEVKOV
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
River Valley ◽  
Similar Species ◽  
Taxonomic Study ◽  
The Caucasus ◽  
Caucasus Region ◽  
Two New Species ◽  
Scanning Electron

This is the first detailed taxonomic study of the genus Navicula in the Krasnodar Territory of the Caucasus region, Russia. During the study of the genus in waterbodies of the Adegoy River valley 15 taxa were recorded. Two species, N. adegoyensis sp. nov. and N. pseudocryptofallax sp. nov., are described as new to science. Their morphology is studied by light and scanning electron microscopy, and comparisons with morphologically similar species are provided. The use of the name N. avenacea for N. lanceolata sensu auct. is discussed. Navicula diversity was higher in the Adegoy River than in pools elsewhere in the river valley.

Comparison of two new species of astogloia Bacillariophyceae) with other small members of section Ellipticae

Phytotaxa ◽  
2013 ◽  
Vol 126 (1) ◽  
pp. 1 ◽  
Author(s):  
CHIARA PENNESI ◽  
MICHEL POULIN ◽  
FRIEDEL HINZ ◽  
TIZIANA ROMAGNOLI ◽  
MARIO DE STEFANO ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Geographical Distribution ◽  
New Taxa ◽  
Related Species ◽  
The World ◽  
Two New Species ◽  
Scanning Electron

In this study, seven Mastogloia species belonging of the section Ellipticae are morphologically described through scanning electron microscopy, including two new taxa M. matthaei and M. stellae. They were collected as epiphytes on seagrasses from several tropical (Indonesia), subtropical (Egypt, Greece, Republic of Malta, Turkey) and temperate (Slovenia, Italy) regions of the world. All these species show typical characters of the Hustedt’s section Ellipticae: elliptical valve outline, a flat valve surface and rounded apices. Moreover, this study provides novel information on the frustule ultrastructure and gives update of their current geographical distribution. Some nomenclatural inconsistencies have been resolved with the typification of M. ovulum and the related species, M. emarginata, from the original Miang Besar material in the Hustedt collection.

New phytoptids (Eriophyoidea, Phytoptidae) from southern African endemic dicotyledons: description of two new species of Solenocristus n. g. and updated key to world genera of the tribe Sierraphytoptini

2018 ◽  
Vol 23 (7) ◽  
pp. 1290 ◽  
Author(s):  
Philipp Chetverikov ◽  
Charnie Craemer ◽  
Stefan Neser ◽  
Sarah Zukoff
Keyword(s):  
Electron Microscopy ◽  
South Africa ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Western Cape ◽  
The World ◽  
Two New Species ◽  
Temperature Scanning ◽  
Scanning Electron ◽  
Conventional Light Microscopy

A new phytoptid genus and two new species, Solenocristus karooensis n. g. & n. sp. and S. searsius n. sp. (Phytoptidae, Sierraphytoptinae, Sierraphytoptini), were collected in the Eastern and Western Cape provinces of South Africa, from southern African endemic dicotyledonous trees Schotia afra (Fabaceae) and Searsia lucida (Anacardiaceae) respectively. They are described and illustrated with the aid of conventional light microscopy and low temperature scanning electron microscopy. Females of both new species possess a distinct pregenital plate divided into two parts by a subcuticular medial ridge. Additionally, in S. karooensis n. sp. the movable digit of the male chelicerae varies in length: among six observed males, three males had a movable digit (md) twice shorter than the fixed digit (fd), in one male it was slightly shorter than fd and in the remaining two males md and fd were of the same length. An updated key to the world genera of the tribe Sierraphytoptini is given. The key incorporates data on seven sierraphytoptine genera including three genera (Neoprothrix Reis & Navia, Solenoplatilobus Chetverikov & Craemer and Solenocristus n. g.) which were described since the last generic key of Eriophyoidea by Amrine et al. (2003) was published.

Nematodes from the Gulf of California. Part 1. The genera Ceramonema Cobb, 1920, Pselionema Cobb in Cobb, 1933 and Pterygonema Gerlach, 1954 (Nematoda: Ceramonematidae)

Nematology ◽  
2008 ◽  
Vol 10 (3) ◽  
pp. 347-373 ◽  
Author(s):  
Manuel Mundo-Ocampo ◽  
Irma Tandingan De Ley ◽  
Axayácatl Rocha-Olivares ◽  
James Baldwin ◽  
Oleksandr Holovachov ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
New Species ◽  
Sexual Dimorphism ◽  
Gulf Of California ◽  
Potential Source ◽  
The Family ◽  
Two New Species ◽  
Morphology And Morphometry ◽  
One New Species ◽  
Scanning Electron

AbstractThe morphology and morphometry of nematodes of six species of the family Ceramonematidae is described using light and scanning electron microscopy. In this paper, we describe two new species and redescribe two known species of Ceramonema and one new species each of Pselionema and Pterygonema. Ceramonema altogolfi sp. n. is characterised by the 0.8-1.3 mm long body, 187-247 body annules, weakly developed zygapophyses, presence of intracuticular vacuoles, sexual dimorphism in amphid shape, presence of vaginal sclerotisation, complex gubernaculum and relatively uniform anal and cloacal annules, whilst C. inguinispina sp. n. has a 0.8-1.1 mm long body, 135-191 body annules, weakly developed zygapophyses, presence of intracuticular vacuoles, sexual dimorphism in amphid shape, absence of vaginal sclerotisation, thorn-shaped precloacal projection, plate-like gubernaculum and double cloacal annule. Pselionema psednum sp. n. is distinguished by 1.4-1.7 mm long body, 251-292 body annules, weakly developed zygapophyses, absence of intracuticular vacuoles, sexual dimorphism in amphid shape and Pterygonema mexicanum sp. n. is characterised by having amphids lacking a central thorn-like projection and pharynx with a distinct posterior glandular bulb. Populations of Ceramonema rectum and Ceramonema cf. yunfengi are also described. The male cloacal region of the species examined appears to be a rich potential source of taxonomic characters that have as yet received insufficient attention for this family.

Freshwater Bryozoa of Okinawa, Japan, with descriptions of Rumarcanella gen. nov. (Phylactolaemata: Plumatellidae) and two new species

Zootaxa ◽  
2011 ◽  
Vol 2732 (1) ◽  
pp. 1 ◽  
Author(s):  
MASATO HIROSE ◽  
SHUNSUKE F. MAWATARI
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
New Genus ◽  
First Record ◽  
Molecular Study ◽  
Okinawa Island ◽  
Two New Species ◽  
Freshwater Bryozoa ◽  
Scanning Electron

We identified nine species of phylactolaemate bryozoans collected from ponds and dams on Okinawa Island, Japan. This is the first report on freshwater bryozoans from Okinawa and includes the first record of Plumatella javanica from Japan. Phylactolaemate species were identified on the basis of colony and statoblast morphology and are illustrated by light microscopy and scanning electron microscopy (SEM). We detected two new plumatellid species that, like Plumatella minuta and Plumatella vorstmani, have a transparent, weakly chitinized colony and hypertubercles on the floatoblast fenestra. A previous molecular study showed these four species to form a clade separate from Plumatella and Hyalinella. We here establish the new genus Rumarcanella to accommodate these species and describe Rumarcanella gusuku n. sp. and R. yanbaruensis n. sp. We discuss the dispersal of bryozoans to and from Japan by birds carrying statoblasts and provide a key to the Phylactolaemata of Japan.

Xyala finneyae sp. n. (Nematoda: Xyalidae) from the intertidal region of the eastern Gulf of California, Mexico

Nematology ◽  
2010 ◽  
Vol 12 (5) ◽  
pp. 673-680 ◽  
Author(s):  
Ian King ◽  
Manuel Mundo-Ocampo ◽  
Paul De Ley
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Sexual Dimorphism ◽  
Intertidal Zone ◽  
Gulf Of California ◽  
Type Species ◽  
Optical Section ◽  
Anterior Position ◽  
Scanning Electron

Abstract Xyala finneyae sp. n. from the intertidal zone in the northern Gulf of California, Mexico, is described using light and scanning electron microscopy. The new species is characterised by the first ring of cuticular crests being at least twice as long as the crests on the remaining annules, vulva at 70-76% of body length from anterior end, sexual dimorphism in amphid fovea size with females having a smaller amphidial opening. Xyala finneyae sp. n. is most similar to the type species, X. striata, and to X. oxybiotica. It differs from the former in having the first ring of crests markedly longer than all subsequent ones, in having shorter outer labial and cephalic setae on the lip region (8-9 and 15-18 vs 12 and 22 μm, respectively), in a more anterior position of vulva (V = 70-76 vs 79-81) and in shorter spicules (29-31 vs 44-47 μm). From X. oxybiotica, it differs in the more spherical lip region with thinner cuticle on the lips (vs lips more protruding anteriad and with thicker cuticle in optical section), shorter outer labial and cephalic setae on the lip region (8-9 and 15-18 vs 13 and 23 μm, respectively), a more anterior vulva (V = 70-76 vs 81-89) and shorter spicules (29-31 vs 35 μm).

Two new species of the genus Panorpa (Mecoptera: Panorpidae)  from Shaanxi, China with notes on their biology

Zootaxa ◽  
2007 ◽  
Vol 1542 (1) ◽  
pp. 59-67 ◽  
Author(s):  
XUE LI ◽  
BAOZHEN HUA ◽  
LIJUN CAI ◽  
PENGYING HUANG
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Larval Stage ◽  
Male Genitalia ◽  
Shaanxi Province ◽  
Type Specimens ◽  
Two New Species ◽  
Scanning Electron

Two new species of scorpionflies, Panorpa byersi Hua et Huang and Panorpa brevicornis Hua et Li, from Shaanxi Province, China, are described and illustrated. Their male genitalia were observed under scanning electron microscopy. Their biology is briefly noticed with larval stage obtained through rearing. The type specimens are preserved in the Entomological Museum, Northwest A & F University.

Two new Orthoseira species (Bacillariophyceae) from lava tubes on Île Amsterdam and Big Island (Hawai΄i)

Phytotaxa ◽  
2013 ◽  
Vol 111 (1) ◽  
pp. 39 ◽  
Author(s):  
REX L. LOWE ◽  
J. PATRICK KOCIOLEK ◽  
BART VAN DE VIJVER
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Lava Tubes ◽  
Face Surface ◽  
Two New Species ◽  
Scanning Electron

Two new species of Orthoseira from lava tubes on Île Amsterdam and Big Island (Hawai΄i) are described using light and scanning electron microscopy: Orthoseira johansenii Lowe & Kociolek sp. nov., from Hawai’i, and O. verleyenii Van de Vijver sp. nov., from the subantarctic. Both species have flat valve surfaces, the striae on the mantle are composed of uniseriate areolae and the valve face areolae are small and more or less irregularly scattered, occupying almost 2/3 of the total valve face surface. The areolae in O. johansenii are occluded by an internal velum; no velum was detected in O. verleyenii. In the centre of the valve is a small central hyaline area with 1–6 carinoportulae in O. verleyenii, 2–4 in O. johansenii. A distinct ring of marginal linking spines or straight, non-linking spines are present at the valve face/mantle junction. No caverns or internal undulations are present. Internal valves have not been encountered. Both Orthoseira johansenii and O. verleyenii have valves of about the same dimensions. The two species differ in that O. verleyenii shows a rather regular striation pattern near the valve face/mantle junction is noted whereas this is not the case in O. johansenii. Moreover, O. johansenii short slits between the carinoportulae on the internal valve side are absent whereas in O. verleyenii most valves possesses these slits. The two new species are compared with others in this small (ca. 15 species) genus. The biogeographic implications of species separated by 15,000 km are discussed.

scholarly journals Two new species of rust fungi (Pucciniales) from the Brazilian Amazon: Aecidium margaritariae on Margaritaria and Uromyces amapaensis on Jatropha

2021 ◽  
Vol 51 (3) ◽  
pp. 244-249
Author(s):  
Patrícia Maria Piovezan OLIVEIRA ◽  
Helen Maria Pontes SOTÃO ◽  
Gabriely Serrão FREIRE ◽  
Josiane Santana MONTEIRO
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Brazilian Amazon ◽  
Rust Fungi ◽  
The State ◽  
Two New Species ◽  
Basal Portion ◽  
Jatropha Gossypiifolia ◽  
Scanning Electron

ABSTRACT Two new species of Pucciniales fungi on plants of the Fabid clade are described from samples deposited in the herbarium of Museu Paraense Emilio Goeldi, collected in the state of Amapá, in the Brazilian Amazon. They are Aecidium margaritariae found on Margaritaria nobilis (Phyllanthaceae), and Uromyces amapaensis on Jatropha gossypiifolia (Euphorbiaceae). The microstructures of the specimens were analyzed using optical and scanning electron microscopy. Aecidium margaritariae is characterized by the presence of globose, subglobose to slightly ellipsoid aeciospores with warty walls and smooth areas usually in the basal portion. Uromyces amapaensis is distinguished by the presence of uredinia with paraphyses which are thickened and rounded at the tip, and pedicellate and smooth teliospores. Descriptions, illustrations, and taxonomic comments are presented for each species.

scholarly journals The genus Luticola (Bacillariophyta) on Ile Amsterdam and Ile Saint-Paul (Southern Indian Ocean) with the description of two new species

2017 ◽  
Author(s):  
Barbora Chattová ◽  
Marc Lebouvier ◽  
Myriam De Haan ◽  
Bart Van de Vijver
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Indian Ocean ◽  
Saint Paul ◽  
Southern Indian Ocean ◽  
Two New Species ◽  
Diatom Genus ◽  
Volcanic Islands ◽  
Scanning Electron

Five species of the terrestrial diatom genus Luticola D.G.Mann were found during a taxonomic survey of two small volcanic islands, Ile Amsterdam and Ile Saint-Paul (Southern Indian Ocean). Apart from the two already known Luticola species L. beyensii Van de Vijver et al. and L. subcrozetensis Van de Vijver et al., two new species are described: L. ivetana Chattová & Van de Vijver sp. nov. and L. vancampiana Chattová & Van de Vijver sp. nov. Finally, one, up to now unknown, Luticola species is briefly discussed and illustrated. Detailed morphological descriptions of these taxa are provided based on both light and scanning electron microscopy observations. Morphological features of the new species are compared to morphologically similar taxa, and notes on their ecology and biogeography are added.

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