scholarly journals A new catfish of the genus Trichomycterus from the Rio Paraíba do Sul Basin, south-eastern Brazil, a supposedly migrating species (Siluriformes, Trichomycteridae)

2022 ◽  
Vol 98 (1) ◽  
pp. 13-21
Author(s):  
Wilson J. E. M. Costa ◽  
Axel M. Katz
Keyword(s):  
New Species ◽  
Morphological Traits ◽  
Morphological Character ◽  
South American ◽  
Caudal Fin ◽  
South Eastern ◽  
Eastern Brazil ◽  
Basal Portion ◽  
Yellow Stripe ◽  
A New Species

A new species of the catfish genus Trichomycterus is described from the Rio Paraíba do Sul, south-eastern Brazil. This species exhibits some morphological character states that are unique amongst congeners, including a robust opercle and a long interopercle with numerous odontodes (50–60 opercular and 90–100 interopercular), a black bar on the basal portion of the caudal fin and a dark brown flank with a well delimited dorsal yellow stripe. It also exhibits some morphological traits that are uncommon amongst congeners, such as the presence of nine pectoral-fin rays. The presence of a shallow hyomandibular outgrowth and a ventrally expanded pre-opercular ventral flap suggests that this species is closely related to T. melanopygius, T. pradensis and T. tete. The new species also differs from T. melanopygius, T. pradensis and T. tete by having an emarginate caudal fin and a single median supra-orbital pore S6. Anecdotal evidence suggests that T. largoperculatus and T. pradensis have migratory habits, a condition not previously reported for eastern South American trichomycterines.

scholarly journals A new species ofEugenia(Myrtaceae) from south-eastern Brazil

2008 ◽  
Vol 158 (2) ◽  
pp. 306-308
Author(s):  
MARCELO DA COSTA SOUZA ◽  
MARLI PIRES MORIM
Keyword(s):  
New Species ◽  
South Eastern ◽  
Eastern Brazil ◽  
A New Species

Relationships of a new species support multiple origin of melanism in Trichomycterus from the Atlantic Forest of south-eastern Brazil (Siluriformes: Trichomycteridae)

2020 ◽  
Vol 288 ◽  
pp. 74-83 ◽  
Author(s):  
Wilson J.E.M. Costa ◽  
José Leonardo O. Mattos ◽  
Pedro F. Amorim ◽  
Paulo J. Vilardo ◽  
Axel M. Katz
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
Multiple Origin ◽  
South Eastern ◽  
Eastern Brazil ◽  
A New Species

A new species of Anthurium (Araceae) from south-eastern Brazil

2008 ◽  
Vol 110 (7-8) ◽  
pp. 535-539 ◽  
Author(s):  
C. M. Sakuragui ◽  
S. J. Mayo
Keyword(s):  
New Species ◽  
South Eastern ◽  
Eastern Brazil ◽  
A New Species

A new species of Branchiomaldane (Polychaeta: Arenicolidae) from the State of São Paulo, south-eastern Brazil

2001 ◽  
Vol 81 (3) ◽  
pp. 415-421 ◽  
Author(s):  
João Miguel de Matos Nogueira ◽  
Alexandra Elaine Rizzo
Keyword(s):  
New Species ◽  
Sao Paulo ◽  
The State ◽  
The Other ◽  
São Paulo ◽  
Stony Coral ◽  
South Eastern ◽  
Eastern Brazil ◽  
A New Species

A new species of Branchiomaldane was identified in a collection of polychaetes living in colonies of a stony coral. Branchiomaldane maryae sp. nov. differs from all other species of the genus by the presence of lensed eyes and 1–3 branchial filaments per parapodium. Comparisons between B. maryae sp. nov. and the other species of the genus are provided, together with some phylogenetic considerations on the position of the genus.

First South American record of the rare ichneumonoid subfamily Masoninae van Achterberg (Hymenoptera: Ichneumonoidea: Ichneumonidae) with description of a new species from Brazil

Zootaxa ◽  
2019 ◽  
Vol 4664 (4) ◽  
pp. 587-593 ◽  
Author(s):  
DONALD L.J. QUICKE ◽  
JÚLIO CEZAR MÁRIO CHAUL ◽  
BUNTIKA A. BUTCHER
Keyword(s):  
New Species ◽  
South America ◽  
South American ◽  
Undescribed Species ◽  
Fossil Species ◽  
Cosmopolitan Distribution ◽  
Dominican Amber ◽  
South Eastern ◽  
Extant Species ◽  
A New Species

Masona popeye Quicke & Chaul sp. n. is described from Brazil, and differentiated from other species of the genus. Described extant species of Masona are known from Australia and south eastern U.S.A. (Georgia and Florida including the Key Islands). Two undescribed species are known from Tanzania and Cambodia. The new species is therefore the first representative of the subfamily Masoninae van Achterberg from South America, demonstrating the completely cosmopolitan distribution of this very poorly known group. The new species most closely resembles a fossil species, M. pyriceps van Achterberg, 2001, from Dominican amber with which it shares the plesiomorphic presence of a scutellum. 

scholarly journals Review of the mite genus Gaeolaelaps Evans & Till (Acari: Laelapidae), and description of a new species from North America, G. gillespiei n. sp.

Zootaxa ◽  
2009 ◽  
Vol 2158 (1) ◽  
pp. 33-49 ◽  
Author(s):  
FRÉDÉRIC BEAULIEU
Keyword(s):  
New Species ◽  
Morphological Traits ◽  
Morphological Character ◽  
Biocontrol Agent ◽  
Undescribed Species ◽  
Hypoaspis Aculeifer ◽  
Fungus Gnats ◽  
Species Descriptions ◽  
A New Species ◽  
Mite Family

The concept of the genus Gaeolaelaps of the mite family Laelapidae is reviewed, based on species descriptions in the literature and the examination of specimens of selected described and undescribed species. A short diagnosis and a description of the genus is presented, showing the range of morphological character states and indicating species that depart from the typical character states. Gaeolaelaps is restored from subgeneric to generic rank. A new species, G. gillespiei n. sp., is described from adult female and male specimens. This species shows promise in the control of fungus gnats and thrips on greenhouse cucumbers in British Columbia, Canada. It is a relative of the well known biocontrol agent Gaeolaelaps (or Hypoaspis) aculeifer, but presents a set of morphological traits that distinguish it from G. aculeifer and other related species. The diversity of soil-dwelling mesostigmatic mites remains poorly explored, and so is their potential for biological control.

Nothobranchius nikiforovi, a new species of seasonal killifish from the lower Matandu drainage in south-eastern coastal Tanzania (Cyprinodontiformes: Nothobranchiidae)

Zootaxa ◽  
2021 ◽  
Vol 4950 (1) ◽  
pp. 103-122
Author(s):  
BÉLA NAGY ◽  
BRIAN R. WATTERS ◽  
ALEXANDRA A. RASPOPOVA
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Distal Portion ◽  
Species Group ◽  
Colour Pattern ◽  
Caudal Fin ◽  
Light Blue ◽  
South Eastern ◽  
Median Fins ◽  
A New Species

Nothobranchius nikiforovi, a new species known from seasonal habitats in the lower Matandu drainage in south-eastern coastal Tanzania is described. It is distinguished from all other congeners, except N. eggersi, by males presenting two colour phenotypes: the blue phenotype having a bright iridescent light blue to blue-green body, with narrow red-brown scale margins creating irregular reticulated pattern, forming chevron-shaped crossbars on the posteroventral portion of body and light blue median fins with red-brown dotted pattern; the red phenotype has a dark red head, light blue dorsal and anal fins proximally and medially, dark red distally, with dark red stripes parallel to the fin rays, and a plain dark red caudal fin. Nothobranchius nikiforovi differs from N. eggersi by male colour pattern, the blue phenotypes having median fins with dark grey distal portion, some of the rays of dorsal and anal fins with white tips (vs. median fins with distinct slender white distal band), and the caudal fin lacking a spotted pattern (vs. dots arranged into irregular curved stripes); the red phenotype with golden stripe between the nape and dorsal-fin origin (vs. light-blue stripe), the dorsal and anal fins with a plain red distal portion and lacking a light distal band (vs. with distinct narrow white distal band), the pelvic fin lacking a distal band (vs. with distinct slender light blue to white distal band), and some morphometric differences. Phylogenetic analyses also support the genetic distinction of the new species from its closest known relative, N. eggersi, and confirm its position in the N. guentheri species group within the Adiniops subgenus. 

A new species of Latrunculia (Biannulata) (Porifera: Demospongiae) from Rio de Janeiro, south-eastern Brazil

2012 ◽  
Vol 43 (2) ◽  
pp. 105-111
Author(s):  
Caroline Cordonis ◽  
Fernando Moraes ◽  
Guilherme Muricy
Keyword(s):  
New Species ◽  
Rio De Janeiro ◽  
South Eastern ◽  
Eastern Brazil ◽  
A New Species

Redescription of Leptotyphlops koppesi Amaral, 1954, and description of a new species of the Leptotyphlops dulcis group from Central Brazil (Serpentes: Leptotyphlopidae)

2006 ◽  
Vol 27 (3) ◽  
pp. 347-357 ◽  
Author(s):  
Paulo Passos ◽  
Ulisses Caramaschi ◽  
Roberta Pinto
Keyword(s):  
New Species ◽  
Original Description ◽  
Colour Pattern ◽  
South American ◽  
South American Species ◽  
Mato Grosso ◽  
Central Brazil ◽  
Group Data ◽  
Basal Portion ◽  
A New Species

AbstractA new species of Leptotyphlops dulcis group is described from the central Brazilian Cerrado, which is diagnosed by rostral shape, general colour pattern, and number of middorsal and subcaudal scales. This taxon has been commonly misidentified as L. koppesi in some Brazilian collections and by some authors. Leptotyphlops koppesi was described from the municipality of Terenos, State of Mato Grosso do Sul, Brazil, based on a single specimen. Since its original description, only three subsequent records appear in the literature reporting additional specimens of L. koppesi. We redescrib the holotype of Leptotyphlops koppesi, defining its geographic range and diagnose this from all species of L. dulcis group. Data on morphometric and meristic variation are reported for the new species and L. koppesi as well. Comparisons are made between the new species and all other South American species of the L. dulcis group. The hemipenis of the new species has a narrow basal portion and a series of lateral flounces. This general hemipenial morphology is unique among Neotropical leptotyphlopids, otherwise known only from Atlantic Rainforest species L. salgueiroi.

A new annual fish of the genus Simpsonichthys (Cyprinodontiformes: Cynolebiidae) from the upper Rio Jequitinhonha basin, Brazil

Zootaxa ◽  
2017 ◽  
Vol 4263 (1) ◽  
pp. 165 ◽  
Author(s):  
DALTON TAVARES BRESSANE NIELSEN ◽  
TIAGO CASARIM PESSALI ◽  
GUILHERME MOREIRA DUTRA
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Color Pattern ◽  
Pectoral Fin ◽  
Annual Fish ◽  
Caudal Fin ◽  
Eastern Brazil ◽  
Eye Diameter ◽  
Fin Length ◽  
A New Species

A new species of Simpsonichthys is described from the upper rio Jequitinhonha basin, Minas Gerais, eastern Brazil. It is diagnosed from all congeners by presenting an A-patterned frontal squamation. Additionally, males of the new species differs from all congeners by the color pattern of body, the color of iris, the absence of contact organs in the pectoral fin, presence of scales on anal-fin base, pectoral-fin length, caudal fin length, and eye diameter. Females of the new species can be diagnosed from remaining congeners by the pectoral-fin length. The conservation status of the new species is evaluated. Comments on the relationships of the new species within the genus Simpsonichthys are presented.

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