A new species of the gopher Gregorymys (Rodentia, Geomyidae) from the early Oligocene (Arikareean 1) of southern Mexico

2020 ◽  
Vol 94 (6) ◽  
pp. 1191-1201
Author(s):  
Elizabeth Ortiz-Caballero ◽  
Eduardo Jiménez-Hidalgo ◽  
Victor M. Bravo-Cuevas
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
North America ◽  
Central America ◽  
Southern Mexico ◽  
Early Oligocene ◽  
Wide Geographic Distribution ◽  
Mexican Species ◽  
A New Species ◽  
Competition For Resources

AbstractA new species of gopher, Gregorymys mixtecorum n. sp., is described from the Arikareean 1 (early Oligocene) of Oaxaca, southern Mexico. Phylogenetic analysis indicates that it is the sister species of G. veloxikua, which was also recently described from southern Mexico. Both species were collected from sediments of the Chilapa Formation that crop out in northwestern Oaxaca. Gregorymys mixtecorum n. sp. and G. veloxikua show differences in size and proportions that possibly reduced competition for resources, exploiting different microhabitats. Both Mexican species represent the oldest and the most southern records of Gregorymys in North America. The Mexican record of Gregorymys suggests that at least some entoptychine rodents diversified in southern Mexico or Central America, and that Geomyidae has had a wide geographic distribution in North America since the early Oligocene.UUID: http://zoobank.org/0f4ad549-2f59-442b-87fa-5c9be0573ea4

scholarly journals A new species of Moraria (Crustacea: Copepoda: Harpacticoida) from the Laurentian Great Lakes

Zootaxa ◽  
2003 ◽  
Vol 205 (1) ◽  
pp. 1 ◽  
Author(s):  
JANET W. REID ◽  
LYNN T. LESKO
Keyword(s):  
North Carolina ◽  
New Species ◽  
North America ◽  
South America ◽  
Central America ◽  
Lake Michigan ◽  
Lake Huron ◽  
Laurentian Great Lakes ◽  
Southern Mexico ◽  
A New Species

Moraria hudsoni n. sp. is described from Trails End Bay in Lake Michigan and Prentiss Bay in Lake Huron, Michigan, USA. The new species differs from its congeners in chaetotaxy, body ornamentation, and other characters. We review published records of members of Moraria from North and Central America; no species is known from South America. Species of this genus have been found in the mountains of southern Mexico, Guatemala, and Honduras, but none of these has been validly described. In North America, eight species have been recorded from Alaska, Canada, and the conterminous USA as far south as North Carolina. We report new geographical records of M. affinis from Virginia, and of both M. cristata and M. virginiana from Maryland and Virginia. We provide a tabular key to aid in identification of the named species of Moraria in North America.

Revision of the Ambrysus pudicus Stål species complex (Heteroptera: Nepomorpha: Naucoridae) with the description of a new species from southern Mexico

Zootaxa ◽  
2018 ◽  
Vol 4491 (1) ◽  
pp. 1
Author(s):  
DANIEL REYNOSO-VELASCO ◽  
ROBERT W. SITES
Keyword(s):  
United States ◽  
New Species ◽  
Costa Rica ◽  
North America ◽  
Central America ◽  
Species Complex ◽  
Species Level ◽  
Southern United States ◽  
Southern Mexico ◽  
A New Species

The Ambrysus pudicus Stål species complex is revised, its species diagnosed, and an illustrated key is presented. The complex includes A. abortus La Rivers, A. amargosus La Rivers, A. funebris La Rivers, A. hungerfordi Usinger, A. parviceps Montandon, A. pudicus Stål, and A. relictus Polhemus & Polhemus. A new species, A. chinanteco, belonging to this complex is described from southern Mexico. The subspecies A. hungerfordi angularis La Rivers, A. h. spicatus La Rivers, and A. h. triunfo La Rivers are herein elevated to full species level and considered members of this species complex. The subspecies A. pudicus barberi Usinger is synonymized with the nominate subspecies. Based on specific combinations of morphological features, two subcomplexes of species are recognized within the complex. The species A. funebris is transferred from the subgenus Acyttarus La Rivers to the subgenus Ambrysus Stål. In order to fix the identity of three species in the complex, neotypes for A. amargosus and A. spicatus and a lectotype for A. pudicus are designated here. The species in the A. pudicus complex are distributed in North America from the southwestern and southern United States to northern Costa Rica. New country records from Central America are presented for A. parviceps and A. pudicus. New state records from Mexico are presented for A. abortus, A. angularis, A. hungerfordi, A. parviceps, A. pudicus, and A. spicatus. 

scholarly journals A late-surviving apatemyid (Mammalia: Apatotheria) from the latest Oligocene of Florida, USA

PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1509 ◽  
Author(s):  
Nicholas J. Czaplewski ◽  
Gary S. Morgan
Keyword(s):  
New Species ◽  
North America ◽  
Coastal Plain ◽  
Eastern North America ◽  
Gulf Coastal Plain ◽  
Early Oligocene ◽  
Alachua County ◽  
The Family ◽  
Distal Edge ◽  
A New Species

A new species of Apatemyidae,Sinclairella simplicidens, is based on four isolated teeth that were screenwashed from fissure fillings at the late Oligocene Buda locality, Alachua County, Florida. Compared to its only congenerSinclairella dakotensis, the new species is characterized by upper molars with more simplified crowns, with the near absence of labial shelves and stylar cusps except for a strong parastyle on M1, loss of paracrista and paraconule on M2 (paraconule retained but weak on M1), lack of anterior cingulum on M1–M3, straighter centrocristae, smaller hypocone on M1 and M2, larger hypocone on M3, distal edge of M2 continuous from hypocone to postmetacrista supporting a large posterior basin, and with different tooth proportions in which M2 is the smallest rather than the largest molar in the toothrow. The relatively rare and poorly-known family Apatemyidae has a long temporal range in North America from the late Paleocene (early Tiffanian) to early Oligocene (early Arikareean). The new species from Florida significantly extends this temporal range by roughly 5 Ma to the end of the Paleogene near the Oligocene-Miocene boundary (from early Arikareean, Ar1, to late Arikareean, Ar3), and greatly extends the geographic range of the family into eastern North America some 10° of latitude farther south and 20° of longitude farther east (about 2,200 km farther southeast) than previously known. This late occurrence probably represents a retreat of this subtropically adapted family into the Gulf Coastal Plain subtropical province at the end of the Paleogene and perhaps the end of the apatemyid lineage in North America.

A new species of the genus Mahanarva Distant, 1909 (Hemiptera: Cercopoidea: Cercopidae), with a key to the species from Central America and Mexico

2018 ◽  
Vol 6 (2) ◽  
pp. 1
Author(s):  
Ulises Castro-Valderrama ◽  
Daniel C. Peck ◽  
Gervasio Silva Carvalho ◽  
Jorge Manuel Valdez–Carrasco ◽  
Jesús Romero–Nápoles
Keyword(s):  
New Species ◽  
North America ◽  
Central America ◽  
The North ◽  
Pasture Grasses ◽  
A New Species

The genus Mahanarva Distant, 1909 (Hemiptera: Cercopoidea: Cercopidae) currently includes two subgenera: Mahanarva Distant, 1909 with 38 species and six subspecies, and Ipiranga Fennah, 1968 with nine species. The Manaharva species are all from the Americas, and a few species are important pests in pasture grasses and sugarcane. There are no reports of any Manaharva species from North America, including Mexico and areas to the north. Here, a new species is described from Mexico and a key to the species of Mahanarva from Central America and Mexico is proposed.

A New Species of Bark Beetle, Dendroctonus mesoamericanus sp. nov. (Curculionidae: Scolytinae), in Southern Mexico and Central America

2015 ◽  
Vol 108 (3) ◽  
pp. 403-414 ◽  
Author(s):  
F. Armendariz-Toledano ◽  
A. Nino ◽  
B. T. Sullivan ◽  
L. R. Kirkendall ◽  
G. Zuniga
Keyword(s):  
New Species ◽  
Central America ◽  
Bark Beetle ◽  
Southern Mexico ◽  
A New Species

A new species of Cephalocereus (Cactaceae) from southern Mexico

Phytotaxa ◽  
2019 ◽  
Vol 392 (2) ◽  
pp. 147
Author(s):  
SALVADOR ARIAS ◽  
HÉCTOR J. TAPIA ◽  
ULISES GUZMÁN
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Distinct Species ◽  
Sister Species ◽  
Molecular Evidence ◽  
Southern Mexico ◽  
Cpdna Markers ◽  
A New Species

Cephalocereus parvispinussp. nov. (Cactaceae) from the Mixtecan region (Oaxaca state, Mexico) is described and illustrated. The morphological and molecular evidence support its recognition as a distinct species within the genus Cephalocereus. The new species is characterized by arborescent habit up to 8 m in height, acrotonic branching, stems with 15−23 ribs; flowers 3.5−4 cm long, pericarpel and receptacular tube without podaria nor spines; fruit 1.7−2.2 cm long, dark red, with white flesh; seeds ca. 1.4 ×0.6 mm, dark brown, with a rugose micro-relief. The phylogenetic analysis usingseven cpDNA markers,shows that C. parvispinusis the sister species of C. polylophusand C. euphorbioides.

scholarly journals Species review of the genus Boreophilia Benick from North America (Coleoptera, Staphylinidae, Aleocharinae, Athetini): Systematics, habitat, and distribution

ZooKeys ◽  
2019 ◽  
Vol 848 ◽  
pp. 57-102 ◽  
Author(s):  
Jan Klimaszewski ◽  
Derek S. Sikes ◽  
Adam Brunke ◽  
Caroline Bourdon
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
North America ◽  
Color Image ◽  
Dna Barcode ◽  
Valid Species ◽  
Black And White ◽  
Sternite Viii ◽  
First Time ◽  
A New Species

Fourteen species of the genus Boreophilia Benick are now recognized in North America. Boreophiliainsecuta (Eppelsheim), reported by Lohse (1990) from North America, is a misidentification of a new species, which is described here as B.neoinsecuta Klimaszewski, sp. n., and the true B.insecuta (Epp.) does not occur in North America. An additional new species is found in Alaska, and described as B.beringi Klimaszewski & Brunke, sp. n. The following three species are synonymized (second name being valid): Boreophiliaherschelensis Klimaszewski & Godin, 2012, with Boreophiliavega (Fenyes, 1920); Boreophiliamanitobensis Lohse, 1990, with B.caseyi Lohse, 1990; and B.angusticornis (Bernahuer, 1907) with B.subplana (J Sahlberg, 1880), based on study of genital structures and external morphology. Athetagelida J Sahlberg, 1887, and Athetamunsteri Bernhauer, 1902, considered as Boreophilia in recent publications, are transferred to the genus Atheta Thomson, subgenus Dimetrota. Boreostibapiligera (J Sahlberg) is transferred to Boreophilia based on morphology and the results of our phylogenetic analysis. Boreophilianearctica is recorded from Alberta and B.nomensis is recorded from British Columbia for the first time. Each valid species is illustrated by color image of habitus, and black and white images of genitalia and tergite and sternite VIII. A new key to all Nearctic species of the genus is provided. DNA barcode data were available for nine of the 14 species, which we downloaded, analyzed, and used as additional evidence for the taxonomic conclusions reached herein.

Contribution to the knowledge of the genus Cylloceria (Hymenoptera: Ichneumonidae: Cylloceriinae) in Central America with description of a new species from Mexico

2012 ◽  
Vol 21 (1) ◽  
pp. 163-168 ◽  
Author(s):  
A.E. Humala
Keyword(s):  
New Species ◽  
Central America ◽  
The State ◽  
Southern Mexico ◽  
First Time ◽  
A New Species ◽  
Unknown Male

Cylloceria tropicana sp. nov. is described from Southern Mexico and the hitherto unknown male of C. alvaradoi Gauld is described from Honduras. Cylloceria arizonica Dasch is reported for the first time from the state of Morelos in Mexico.

scholarly journals A new species of Tetradesmus (Chlorophyceae, Chlorophyta) isolated from desert soil crust habitats in southwestern North America

2019 ◽  
Vol 64 (1) ◽  
pp. 25-32
Author(s):  
Elizaveta F. Terlova ◽  
Louise A. Lewis
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
North America ◽  
Cryptic Species ◽  
Soil Crust ◽  
Its2 Rdna ◽  
Desert Soils ◽  
As Species ◽  
Cryptic Taxa ◽  
A New Species

AbstractA new species of Tetradesmus (Tetradesmus adustus) is described from desert soils of southwestern North America. The identification is based on phylogenetic analysis of data from nuclear (ITS2 rDNA) and plastid (rbcL, tufA) barcode markers. This newly described species represents the fifth cryptic species of arid-adapted algae in Scenedesmaceae. A re-analysis of published sequences attributed to desert Tetradesmus in the context of our newly obtained data reiterates the importance of robust phylogenetic analysis in identification of cryptic taxa, such as species of Tetradesmus.

Platanthera fujianense (Orchidaceae, Orchideae), a putatively holomycotrophic orchid from eastern China

Phytotaxa ◽  
2016 ◽  
Vol 286 (2) ◽  
pp. 116
Author(s):  
BING-HUA CHEN ◽  
XIAO-HUA JIN
Keyword(s):  
New Species ◽  
North America ◽  
Central America ◽  
North Africa ◽  
Eastern China ◽  
Terrestrial Orchid ◽  
Floral Characters ◽  
A New Species

Platanthera consists about 150–200 species and is among the largest terrestrial orchid genera; it is distributed across Asia, North America and Europe with a few species extending into North Africa and Central America (Bateman et al. 2003, 2009, Chase et al. 2015, Chen et al. 2009, Luer 1975, Pearce & Cribb 2002, Pridgeon et al. 2001, Lang 1999, Efimov 2016, Raskoti et al. 2016). There are about 50 species of Platanthera in China, out of which 25 species are endemic (Lang 1999, Chen et al. 2009, Jin et al. 2012, 2013,2014,2015, Efimov 2016). During fieldwork in eastern China, a leafless but visibly green Platanthera was discovered. This species is sympatric and similar to Platanthera minor, but it is easy to distinguish from the latter on the basis of vegetative and floral characters. Here we considered this little known Platanthera as a new species.

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