A new species of Neoascaris from Rattus assimilis, with a redefinition of the genus

Parasitology ◽  
1957 ◽  
Vol 47 (3-4) ◽  
pp. 350-360 ◽  
Author(s):  
J. F. A. Sprent
Keyword(s):  
Small Intestine ◽  
New Species ◽  
Ventral Surface ◽  
Unequal Distribution ◽  
Oesophageal Gland ◽  
The Family ◽  
Primitive Species ◽  
A New Species

Neoascaris mackerrasae from the small intestine of the Australian allied rat (Rattus assimilis) is described. It is compared with Neoascaris vitulorum and found to differ as follows:(1) It is a considerably smaller species.(2) The vulva is situated more posteriorly.(3) The nucleus of the dorsal oesophageal gland is oval and situated in the dorsal sector of the ventriculus, whereas in N. vitulorum it is elongate and is situated in the sub ventral sectors.(4) The eggs are more coarsely pitted.(5) The spicules have two flanges which form a gutter on the ventral surface, whereas in N. vitulorum they are almost cylindrical.The genus Neoascaris is redefined so as to include the presence of rudimentary cervical alae and the unequal distribution of the oesophageal glands. The genus is placed in the family Toxocaridae Hartwich, 1954.Other ascaridoid parasites occurring in rodents are listed and differentiated from N. mackerrasae. It is suggested that on account of the arrangement in the ventriculus of the nuclei of the oesophageal glands, N. mackerrasae may represent a primitive species among the ascaridoid parasites of mammals.

A new species of the genus Isoperla (Plecoptera: Perlodidae) from TIANMU MOUNTAIN NATURE RESERVE, China

Zootaxa ◽  
2018 ◽  
Vol 4504 (2) ◽  
pp. 276
Author(s):  
QING-BO HUO ◽  
YU-ZHOU DU
Keyword(s):  
New Species ◽  
Nature Reserve ◽  
First Record ◽  
Ventral Surface ◽  
Zhejiang Province ◽  
The Family ◽  
A New Species ◽  
Coastal China

A species of the genus Isoperla Banks, 1906, I. oncocauda Huo & Du, sp. nov. is described as new to science and is the first record for the family Perlodidae from the Tianmu Mountain Nature Reserve, Zhejiang Province of eastern coastal China. Both sexes of the new species are characterized by tergum 10 with a developed process. The partially extruded aedeagus of the male is membranous without conspicuous larger sclerites and with the ventral surface covered with dense scale-like and nail-shaped spines. 

Notes on New Aspidogastrid Species, with a Consideration of the Phylogeny of the Group

Parasitology ◽  
1936 ◽  
Vol 28 (4) ◽  
pp. 487-501 ◽  
Author(s):  
Ernest Carroll Faust ◽  
Chung-Chang Tang
Keyword(s):  
Small Intestine ◽  
New Species ◽  
New Family ◽  
Spiral Valve ◽  
New Subgenus ◽  
The Family ◽  
A New Species

1. Cotylaspis sinensis and Lophotaspis orientalis are described as new species of trematodes from the small intestine of the turtle, Amyda tuberculata, from Foochow, Fukien Province, China.2. Stichocotyle cristata is described as a new species from the spiral valve of the cow-nosed ray, Rhinoptera quadriloba, from Biloxi Bay, Mississippi.3. A new subgenus, Multicalyx, is created for the species Stichocotyle cristata, while the species S. nephropis appropriately belongs to a new subgenus Stichocotyle.4. Evidence is provided that aspidogastrid worms are referable neither to the Monogenea nor the Digenea, but belong to an intermediate subclass group, Aspidogastrea, n.n.5. The genus Stichocotyle has been removed from the family Aspidogastridae Poche, 1907, and placed in a new family, Stichocotylidae.

scholarly journals A new species ofMetopocetus(Cetacea, Mysticeti, Cetotheriidae) from the Late Miocene of the Netherlands

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e1572 ◽  
Author(s):  
Felix Georg Marx ◽  
Mark E.J. Bosselaers ◽  
Stephen Louwye
Keyword(s):  
New Species ◽  
The Netherlands ◽  
Late Miocene ◽  
Ventral Surface ◽  
Baleen Whale ◽  
Infraorbital Foramen ◽  
Posterior Process ◽  
The Family ◽  
Phylogenetic Affinities ◽  
A New Species

The family Cetotheriidae has played a major role in recent discussions of baleen whale phylogenetics. Within this group, the enigmatic, monotypicMetopocetus durinasushas been interpreted as transitional between herpetocetines and other members of the family, but so far has been restricted to a single, fragmentary cranium of uncertain provenance and age. Here, we expand the genus and shed new light on its phylogenetic affinities and functional morphology by describingMetopocetus hunterisp. nov. from the Late Miocene of the Netherlands. Unlike the holotype ofM. durinasus, the material described here is confidently dated and preserves both the tympanic bulla and additional details of the basicranium.M. huntericlosely resemblesM. durinasus, differing primarily in its somewhat less distally expanded compound posterior process of the tympanoperiotic. Both species are characterised by the development of an unusually large fossa on the ventral surface of the paroccipital process, which extends anteriorly on to the compound posterior process and completely floors the facial sulcus. In life, this enlarged fossa may have housed the posterior sinus and/or the articulation of the stylohyal. Like other cetotheriids,Metopocetusalso bears a well-developed, posteriorly-pointing dorsal infraorbital foramen near the base of the ascending process of the maxilla, the precise function of which remains unclear.

Revision of Piceoerpeton Meszoely (Caudata: Scapherpetontidae) and description of a new species from the late Maastrichtian and ?early Paleocene of western North America

2012 ◽  
Vol 183 (6) ◽  
pp. 611-620 ◽  
Author(s):  
James D. Gardner
Keyword(s):  
New Species ◽  
North America ◽  
Articular Surface ◽  
Odontoid Process ◽  
Ventral Surface ◽  
Western North America ◽  
Articular Surfaces ◽  
The Family ◽  
Early Paleocene ◽  
A New Species

Abstract The scapherpetontid salamander Piceoerpeton is known from the latest Cretaceous to middle Paleogene of North America and was the last surviving member of that paedomorphic family. A suite of vertebral features differentiates Piceoerpeton from other scapherpetontids, including three atlantal features that are autapomorphic within the family: odontoid process reduced to an anteriorly short, nipple-like structure; ventral surface of odontoid process lacks an articular surface for contact with skull; and articular surfaces of anterior cotyles are deeply concave. Differences in inferred body size and vertebral structure permit the recognition of two congeners: P. willwoodense, a large-bodied species (estimated snout-vent length = 100 cm) from the late Paleocene of the Western Interior and early Eocene of the Canadian Arctic and the much smaller P. naylori new species from the late Maastrichtian and ?early Paleocene of Wyoming and Montana, USA. In terms of its older age, smaller size, and less derived vertebral features, P. naylori is potentially ancestral to P. willwoodense.

Coniosternum masneri sp. nov., a new species of the family Scathophagidae (Diptera) from Canada

2017 ◽  
Vol 186 (1) ◽  
pp. 113-116
Author(s):  
František Šifner
Keyword(s):  
New Species ◽  
Diagnostic Characters ◽  
The Family ◽  
A New Species

Abstract A new Nearctic species of the genus Coniosternum Becker, 1894, C. masneri sp. nov., is described from Canada, and its important diagnostic characters are illustrated.

A new species of the montane lacewing genus Rapisma McLachlan (Neuroptera, Ithonidae) from northwestern Yunnan, China

Zootaxa ◽  
2020 ◽  
Vol 4763 (3) ◽  
pp. 439-443
Author(s):  
XINGYUE LIU
Keyword(s):  
New Species ◽  
Southeast Asia ◽  
East Asia ◽  
South Asia ◽  
The Family ◽  
A New Species ◽  
Northwestern Yunnan

The genus Rapisma McLachlan, 1866 (montane lacewings) is a rare and little known group of the family Ithonidae (Insecta: Neuroptera). There have been 21 described species of Rapisma, and all of them are distributed from East Asia, South Asia and Southeast Asia. Here I report a new species of Rapisma from northwestern Yunnan, China, namely Rapisma weixiense sp. nov. The new species belongs to a group of Rapisma species with very short antennae. 

Description of a new species of Auriculostoma (Digenea: Allocreadiidae) from Characidium heirmostigmata (Characiformes: Crenuchidae) from Argentina, using morphological and molecular data

2021 ◽  
Vol 95 ◽  
Author(s):  
M.M. Montes ◽  
J. Barneche ◽  
Y. Croci ◽  
D. Balcazar ◽  
A. Almirón ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
National Park ◽  
Molecular Data ◽  
Rrna Gene ◽  
28S Rrna ◽  
The Family ◽  
Parasitological Survey ◽  
Morphological And Molecular Data ◽  
A New Species

Abstract During a parasitological survey of fishes at Iguazu National Park, Argentina, specimens belonging to the allocreadiid genus Auriculostoma were collected from the intestine of Characidium heirmostigmata. The erection of the new species is based on a unique combination of morphological traits as well as on phylogenetic analysis. Auriculostoma guacurarii n. sp. resembles four congeneric species – Auriculostoma diagonale, Auriculostoma platense, Auriculostoma tica and Auriculostoma totonacapanensis – in having smooth and oblique testes, but can be distinguished by a combination of several morphological features, hosts association and geographic distribution. Morphologically, the new species can be distinguished from both A. diagonale and A. platense by the egg size (bigger in the first and smaller in the last); from A. tica by a shorter body length, the genital pore position and the extension of the caeca; and from A. totonacapanensis by the size of the oral and ventral sucker and the post-testicular space. Additionally, one specimen of Auriculostoma cf. stenopteri from the characid Charax stenopterus (Characiformes) from La Plata River, Argentina, was sampled and the partial 28S rRNA gene was sequenced. The phylogenetic analysis revealed that A. guacurarii n. sp. clustered with A. tica and these two as sister taxa to A. cf. stenopteri. The new species described herein is the tenth species in the genus and the first one parasitizing a member of the family Crenuchidae.

A new species and further records of quill mites (Acari: Cheyletoidea: Syringophilidae) parasitic on birds (Aves) in England

Zootaxa ◽  
2009 ◽  
Vol 2133 (1) ◽  
pp. 49-54 ◽  
Author(s):  
BARRY NATTRESS ◽  
MACIEJ SKORACKI
Keyword(s):  
New Species ◽  
Length Ratio ◽  
Additional Species ◽  
Tawny Owl ◽  
Strix Aluco ◽  
Quill Mites ◽  
The Family ◽  
Transverse Branch ◽  
One New Species ◽  
A New Species

Four additional species of quill mites of the family Syringophilidae Lavoipierre have now been recorded in England. This includes one new species, Bubophilus aluconis sp. nov., which parasitizes the tawny owl Strix aluco (Strigiformes: Strigidae). It differs from other species of this genus, B. ascalaphus Philips et Norton, 1978 and B. asiobius Skoracki et Bochkov, 2002 by the number of chambers in transverse branch of the peritremes (2-3), the length ratio of setae vi and ve (1:1.6-2), and the lengths of the stylophore and aggenital setae ag1 (180 and 135-145, respectively).

Cryptofavognathus, a new genus of the family Cryptognathidae Oudemans (Acari: Raphignathoidea), with the description of a new species from Turkey

Zootaxa ◽  
2010 ◽  
Vol 2533 (1) ◽  
pp. 36 ◽  
Author(s):  
SALİH DOĞAN ◽  
GÜLDEM DÖNEL
Keyword(s):  
New Species ◽  
Adult Female ◽  
New Genus ◽  
The Family ◽  
A New Species

A new genus, Cryptofavognathus is proposed for two species, Cryptofavognathus afyonensis (Koç & Akyol, 2004) comb. nov. and C. anatolicus sp. nov. The adult female and male of C. anatolicus sp. nov. collected from moss and a bird’s nest are herein described and figured.

A new species of anapid spider (Araneae: Araneoidea, Anapidae) in Eocene Baltic amber, imaged using phase contrast X-ray computed micro-tomography

Zootaxa ◽  
2011 ◽  
Vol 2742 (1) ◽  
pp. 60 ◽  
Author(s):  
DAVID PENNEY ◽  
ANDREW MCNEIL ◽  
DAVID I. GREEN ◽  
ROBERT BRADLEY ◽  
YURI M. MARUSIK ◽  
...  
Keyword(s):  
New Species ◽  
Phase Contrast ◽  
Baltic Amber ◽  
X Ray ◽  
The Family ◽  
X Ray Computed ◽  
Micro Tomography ◽  
The Baltic ◽  
A New Species ◽  
Eocene Amber

A new species of the extant spider family Anapidae is described from a fossil mature male in Eocene amber from the Baltic region and tentatively assigned to the genus Balticoroma Wunderlich, 2004. Phase contrast X-ray computed micro-tomography was used to reveal important features that were impossible to view using traditional microscopy. Balticoroma wheateri new species is easily diagnosed from all other anapids by having clypeal extensions that run parallel to the ectal surface of the chelicerae and in having the metatarsus of the first leg highly reduced and modified into what is presumably a y-shaped clasping structure. Although only a single extant anapid species occurs in northern Europe, the family was diverse in the Eocene. The discovery of yet another anapid species in Baltic amber supports the idea that Eocene European forests may have been a hotspot of evolution for this family of spiders.

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