A New Mayfly Species of Epeorus (Caucasiron) from Southwestern China (Ephemeroptera: Heptageniidae)

Zootaxa ◽  
2010 ◽  
Vol 2527 (1) ◽  
pp. 61 ◽  
Author(s):  
PING CHEN ◽  
YU-YU WANG ◽  
CHANG-FA ZHOU
Keyword(s):  
New Species ◽  
Aquatic Insects ◽  
Head Capsule ◽  
Color Pattern ◽  
Dorsal Side ◽  
Southwestern China ◽  
Anterior Portion ◽  
The Family ◽  
Lateral Margins ◽  
A New Species

The mayflies of the subgenus Epeorus (Caucasiron) are lotic aquatic insects in Heptageniidae. They are unique in the family because their gills form a disc, gills 1 are strongly expanded anteriorly and contiguous under thorax, gills 7 have a longitudinal fold and are contiguous under apex of abdomen and the pairs of gill 2–6 or 7 have a distinct projection on anterior-dorsal side of leading margin as well as imaginal tubular, diverging penis lobes with titillators. A new species, Epeorus (Caucasiron) extraordinarius sp. nov., collected from southwestern China, is described here. The strongly expanded anterior portion and the concave lateral margins of the nymphal head capsule, the color pattern of nymphs and imagos, and the structure of the male genitalia with relatively small titillators distinguish the new species from previously described members of the subgenus.

A new record of the family Isonychiidae (Insecta: Ephemeroptera) from the Western Ghats, India with a description of new species

Zootaxa ◽  
2019 ◽  
Vol 4586 (1) ◽  
pp. 162
Author(s):  
M. VASANTH ◽  
C. SELVAKUMAR ◽  
K. A. SUBRAMANIAN ◽  
R. BABU ◽  
K. G. SIVARAMAKRISHNAN
Keyword(s):  
New Species ◽  
Western Ghats ◽  
New Record ◽  
Tamil Nadu ◽  
Abdominal Segment ◽  
Uniformly Convex ◽  
The Family ◽  
Lateral Margins ◽  
The Western Ghats ◽  
A New Species

A new species belonging to the subgenus Isonychia, of the genus Isonychia Eaton, 1871, is described based on larvae and imagoes collected from Moyar River, Nilgiri District, Tamil Nadu, India. The imagoes of I. moyarensis n. sp. can be distinguished from other described Oriental species of Isonychia (Isonychia) by the combination of characters: (i) forewing with rusty brown maculae in the costal, subcostal, and median areas; (ii) femur and tibia brown, fore leg pale, apices of tarsal segments brownish; (iii) males with distal angles of penes rounded, without serrations; (iv) second segment of gonostylus uniformly convex; and (v) sterna of tenth abdominal segment in female deeply cleft. Isonychia (Isonychia) moyarensis n. sp. can be distinguished in the larval stage from other known Oriental species by the following combination of characters: (i) abdominal terga II–IX with median dark brown maculae progressively larger with dark brown slanting streaks in lateral margins; (ii) trachea of abdominal gills I–VII unbranched; (iii) posterolateral projections on abdominal segments I–VII blunt and progressively longer than those of segments VIII–IX, sharp and distinct; and (iv) abdominal terga X pale yellow in anterior ⅓, and dark brown in the posterior ⅔. A key to the known larvae of Oriental species of Isonychia is also provided. 

A new species of deropristid trematode from the sterlet Acipenser ruthenus (Actinopterygii: Acipenseridae) and revision of superfamily affiliation of the family Deropristidae

2020 ◽  
Vol 190 (2) ◽  
pp. 448-459 ◽  
Author(s):  
Sergey Sokolov ◽  
Ekaterina Voropaeva ◽  
Dmitry Atopkin
Keyword(s):  
New Species ◽  
Dorsal Side ◽  
The Body ◽  
Phylogenetic Study ◽  
Rrna Gene ◽  
28S Rrna ◽  
Acipenser Ruthenus ◽  
The Family ◽  
A New Species ◽  
Sterlet Acipenser Ruthenus

Abstract A new species, Skrjabinopsolus nudidorsalis sp. nov. is described from the sterlet Acipenser ruthenus, caught in the River Volga basin (Russia). This species differs from previously described congeners by the absence of vitelline follicles on the dorsal side of the body. The complete 18S rRNA and partial 28S rRNA gene sequences obtained for S. nudidorsalis are the first molecular data for the family Deropristidae. The results of phylogenetic analysis indicate that Deropristidae is sister to the Monorchiidae + Lissorchiidae group. The results of the phylogenetic study contradict the current taxonomic hypothesis that Deropristidae belongs to the superfamily Lepocreadioidea and allow inclusion of this family in Monorchioidea. The morphological similarity of deropristids to other monorchioids is recognizable from the presence of a bipartite internal seminal vesicle, spinous cirrus and a voluminous, armed metraterm.

scholarly journals Hydrolagus mccoskeri sp. nov., a new species of chimaeroid fish from the Galápagos Islands (Holocephali: Chimaeriformes: Chimaeridae)

Zootaxa ◽  
2006 ◽  
Vol 1328 (1) ◽  
pp. 27 ◽  
Author(s):  
LEWIS A.K. BARNETT ◽  
DOMINIQUE A. DIDIER ◽  
DOUGLAS J. LONG ◽  
DAVID A. EBERT
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Color Pattern ◽  
Equatorial Pacific ◽  
Galápagos Islands ◽  
Eastern Equatorial Pacific ◽  
Infraorbital Canal ◽  
The Family ◽  
Small Head ◽  
A New Species

A new species of chimaeroid, Hyd rolagus mccosker i sp. nov., is described from the Galápag os Islands. This species represents the second member of the family Chimaeridae known from the eastern equatorial Pacific. It can b e distinguis hed from its congeners by a combination of the following characters: small head with short, blunt snout; preopercu lar and oral lateral line canals branching from the same node off the infraorbital canal and sharing a short common b ranch; dorsum medium brown with numerous narrow, shar ply delineated circular and elongate white blotches; ventrum white to tan with extremely fine brown mottl ing. The species is compared to Hyd rolagus n ovaezealandiae and Hyd rolagus colliei , the most similar congeners in color pattern and morphology.

scholarly journals Redefinition of Mesoleptobasis Sjöstedt 1918 with the inclusion of Metaleptobasis cyanolineata (Wasscher 1998) comb. nov. and description of a new species, Mesoleptobasis elongata (Odonata: Coenagrionidae)

Zootaxa ◽  
2009 ◽  
Vol 2145 (1) ◽  
pp. 47-68 ◽  
Author(s):  
ROSSER W. GARRISON ◽  
NATALIA VON ELLENRIEDER
Keyword(s):  
New Species ◽  
Color Pattern ◽  
Wing Margin ◽  
Lateral Margins ◽  
Unbroken Line ◽  
Dorsal Stripe ◽  
A New Species

Metaleptobasis cyanolineata is transferred to Mesoleptobasis and a new species, Mesoleptobasis elongata, is described. The genus is diagnosed by the combination of rounded frons, highly modified pronotum with long processes at least in males, pterothoracic color pattern lacking dark mid-dorsal stripe, pretarsus with supplementary tooth vestigial or absent, vein descending from quadrangle forming an unbroken line to wing margin, and genital ligula with a small inner fold and with spine-like projections on lateral margins distal to flexure. Its species are illustrated, mapped, and keyed.

A new species of Dipsas Laurenti from the Atlantic Forest of Brazil (Serpentes: Dipsadidae)

Zootaxa ◽  
2010 ◽  
Vol 2691 (1) ◽  
pp. 57 ◽  
Author(s):  
DANIEL S. FERNANDES ◽  
OTAVIO A. V. MARQUES ◽  
ANTÔNIO J. S. ARGÔLO
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
Color Pattern ◽  
Species Group ◽  
External Morphology ◽  
Posterior Half ◽  
Anterior Portion ◽  
Posterior Portion ◽  
A New Species

Dipsas sazimai sp. nov. is described from the Atlantic Forest of Brazil. The new species is distinguished from all congeners by showing anterior portion of body with rounded dorsal blotches wider than interblotches; median and posterior portion of body with blotches higher than long and narrower than interblotches; posterior body blotches lighter than anterior blotches; posterior blotches with conspicuous white edge in paraventral region; tiny and vertically oriented streaks in the interblotches from the posterior half of body; 187–209 ventral scales; 107–129 subcaudal scales; and the first blotch not reaching the rictus. Based on characters of external morphology and color pattern we suggest the new species is related to taxa of the recently proposed Dipsas incerta species group.

scholarly journals Thylakogaster namibiensis sp. nov. (Isopoda: Asellota: Janiroidea), a new species of Haplomunnidae from the southeast Atlantic deep sea

Zootaxa ◽  
2009 ◽  
Vol 2096 (1) ◽  
pp. 381-394
Author(s):  
NILS BRENKE ◽  
ANIKA BUSCHMANN
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Deep Sea ◽  
The Other ◽  
The Family ◽  
Lateral Margins ◽  
A New Species

Thylakogaster namibiensis sp. nov., a new deep-sea species belonging to the family Haplomunnidae Wilson, 1976 is described from the southeast Atlantic Ocean. The differences of the new species to the other species of the genus Thylakogaster Wilson and Hessler, 1974 are discussed. Main characters distinguishing T. namibiensis sp. nov. from its congeners are the presence of cuticular spines on the lateral margins of the pereonites 1–7, the low number of spines on the pleotelson, and the number of five terminal flagellar articles bearing aesthetascs on the antenna 1 of the copulatory male. The new species, T. namibiensis, is the first member of this genus found in the southeast Atlantic Ocean and at a depth of 5415 m, it is also the deepest which a member of the genus has ever been found.

scholarly journals A new species of Hexabdella (Acari: Bdellidae) from Brazil

Zootaxa ◽  
2007 ◽  
Vol 1501 (1) ◽  
pp. 57-63 ◽  
Author(s):  
FÁBIO A. HERNANDES ◽  
RODRIGO D. DAUD ◽  
REINALDO J.F. FERES
Keyword(s):  
New Species ◽  
Neotropical Region ◽  
Key To Species ◽  
The Family ◽  
Lateral Margins ◽  
A New Species

A new species of the genus Hexabdella Van der Schyff, Theron & Ueckermann, Hexabdella cinquaginta sp.n. is herein described, representing the second species of the family Bdellidae from the neotropical region. It can be distinguished from H. singula by its lobed striae on lateral margins of hysterosoma and by the leg chaetotaxy. A key to species of the genus is presented.

scholarly journals A new species of Moenkhausia (Characiformes: Characidae) from the rio Madeira basin, Brazil, with comments on the evolution and development of the trunk lateral line system in characids

2021 ◽  
Vol 19 (2) ◽  
Author(s):  
Manoela Maria Ferreira Marinho ◽  
Willian Massaharu Ohara ◽  
Fernando Cesar Paiva Dagosta
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Amazon Basin ◽  
Evolutionary Process ◽  
Color Pattern ◽  
Lateral Line System ◽  
Anterior Portion ◽  
Dark Line ◽  
Line System ◽  
A New Species

Abstract A new species of Moenkhausia is described from the rio Machado drainage, Amazon basin, Brazil. It is diagnosed from congeners by its color pattern, consisting of the concentration of chromatophores on the anterior portion of body scales, the horizontally elongate blotch on caudal peduncle, a bright golden coloration of the dorsal portion of eye when alive, and a dark line crossing the eye horizontally. The new species has variable morphology regarding trunk lateral-line canals. Most fully grown individuals do not have enclosed bony tube in many lateral line scales, resembling early developmental stages of tube formation of other species. This paedomorphic condition is interpreted as a result of developmental truncation. Such evolutionary process may have been responsible for the presence of distinct levels of trunk lateral line reductions in small characids. Variation in this feature is common, even between the sides of the same individual. We reassert that the degree of trunk lateral-line tube development must be used with care in taxonomic and phylogenetic studies, because reductions in the laterosensory system may constitute parallel loss in the Characidae. We suggest the new species to be categorized Near Threatened due to the restricted geographical distribution and continuing decline in habitat quality.

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. 

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