New species and records of Chasmogenus Sharp, 1882 from the southwestern margin of the Guiana Shield (Coleoptera: Hydrophilidae: Acidocerinae)

Zootaxa ◽  
2021 ◽  
Vol 5048 (3) ◽  
pp. 435-443
Author(s):  
RACHEL D. GLYNN ◽  
ANDREW EDWARD Z. SHORT
Keyword(s):  
New Species ◽  
Male Genitalia ◽  
French Guiana ◽  
Molecular Data ◽  
Integrative Approach ◽  
Guiana Shield ◽  
Adult Morphology ◽  
Northern Brazil ◽  
Southwestern Margin ◽  
Three New Species

The Neotropical water scavenger beetle genus Chasmogenus Sharp, 1882 is a diverse lineage with 34 described species. Here, three new species from the southwestern margin of the Guiana Shield are described using an integrative approach combining adult morphology and molecular data: Chasmogenus clinatus sp. n. (Brazil: Amazonas, Venezuela: Amazonas), C. gironae sp. n. (Venezuela: Amazonas), and C. inpa sp. n. (Brazil: Amazonas). Examination of the male genitalia is essential for confident identifications and thus unassociated females may prove extremely difficult to identify. New distributional records in Brazil for C. acuminatus Smith & Short, 2020 are provided as well as habitus images of newly described species and an updated key to the species from Venezuela, Suriname, Guyana, French Guiana and northern Brazil.  

scholarly journals Review of the genus Chasmogenus Sharp, 1882 of northeastern South America with an emphasis on Venezuela, Suriname, and Guyana (Coleoptera, Hydrophilidae, Acidocerinae)

ZooKeys ◽  
2020 ◽  
Vol 934 ◽  
pp. 25-79
Author(s):  
Rachel R. Smith ◽  
Andrew Edward Z. Short
Keyword(s):  
New Species ◽  
South America ◽  
Cytochrome C Oxidase ◽  
Endemic Species ◽  
French Guiana ◽  
Molecular Data ◽  
Integrative Approach ◽  
Cytochrome C Oxidase I ◽  
Northern Brazil ◽  
Single Locality

The water scavenger beetle genus Chasmogenus Sharp, 1882 is reviewed in northeastern South America using an integrative approach that combines adult morphology and molecular data from the gene cytochrome c oxidase I (COI). Eighteen new species are described: Chasmogenus acuminatussp. nov. (Brazil, French Guiana, Guyana, Suriname), C. ampliussp. nov. (Venezuela), C. berbicensissp. nov. (Guyana), C. brownsbergensissp. nov. (Suriname), C. castaneussp. nov. (Venezuela), C. clavijoisp. nov. (Venezuela), C. cuspifersp. nov. (Venezuela), C. flavomarginatussp. nov. (Venezuela), C. gatosp. nov. (Venezuela), C. guianensissp. nov. (Suriname, Guyana), C. ignotussp. nov. (Brazil), C. ligulatussp. nov. (Suriname), C. lineatussp. nov. (Venezuela), C. pandussp. nov. (Brazil, French Guiana, Suriname), C. schmitssp. nov. (Suriname), C. sinnamarensissp. nov. (French Guiana), C. tafelbergensissp. nov. (Suriname), and C. undulatussp. nov. (Guyana). We found genetic support for an additional new species in Guyana which is currently only known from females that we refer to as Chasmogenus sp. C. We examined the holotypes of the four species previously known from the region, and found that C. occidentalis García syn. nov. and C. yukparum García syn. nov. are conspecific with C. bariorum García, 2000 and are synonymized with that species, which is here redescribed. We redescribe C. australis García and expand the range of this species to include northern Brazil, Guyana, and French Guiana. All species are aquatic, with most being associated with forested streams and forest pools. Of the 21 species, more than half (11) are only known from a single locality indicating the genus may have many more micro-endemic species yet to be discovered in the region. Characters of the male genitalia are essential for confirming the identity of some species, consequently it is not always possible to make positive identifications of unassociated female specimens based on morphology alone. Habitus images are provided as well as a revised key to the genus for northeastern South America.

Partial revision of the genus Robinsonia Grote 1866: description of five new species for the Neotropical fauna (Lepidoptera, Erebidae, Arctiinae, Phaegopterina)

Zootaxa ◽  
2021 ◽  
Vol 4990 (1) ◽  
pp. 65-80
Author(s):  
MICHEL LAGUERRE
Keyword(s):  
New Species ◽  
Costa Rica ◽  
Male Genitalia ◽  
French Guiana ◽  
Dna Barcode ◽  
Female Genitalia ◽  
Species Status ◽  
Neotropical Fauna ◽  
Three New Species ◽  
Partial Revision

The genus Robinsonia Grote, 1866 is partially reviewed following a large DNA barcode campaign. In the Robinsonia praphoea Dognin, 1906 group three new species are described: R. simulans sp. n. from French Guiana, up to now confused with R. praphoea itself and then R. decaensi sp. n. and R. maranhensis sp. n. both from the lower Amazon. R. drechseli sp. n. is described from Paraguay and R. inexpectata sp. n., a species close to R. mera (Schaus, 1910) from Costa Rica, is described as new from Peru and Bolivia. Finally the full species status is confirmed for R. flavicorpus Dognin, 1910 which is found to be differentiable from R. marginata Rothschild, 1909. All types are figured along with the male genitalia for most and some female genitalia for all studied species.

Revision of the Neotropical genus Domodon Reemer (Diptera: Syrphidae), with description of three new species

Zootaxa ◽  
2019 ◽  
Vol 4648 (3) ◽  
pp. 523-536
Author(s):  
FERNANDO DA SILVA CARVALHO-FILHO ◽  
MARLÚCIA BONIFÁCIO MARTINS ◽  
MATHEUS TAVARES DE SOUZA ◽  
MENNO REEMER
Keyword(s):  
New Species ◽  
Costa Rica ◽  
South America ◽  
Central America ◽  
Male Genitalia ◽  
French Guiana ◽  
Type Material ◽  
Key To Species ◽  
Northern South America ◽  
Three New Species

The Syrphidae genus Domodon Reemer, 2013 so far included two species, D. zodiacus Reemer, 2013 and D. peperpotensis Reemer, 2014, both recorded only from Suriname. Additional specimens belonging to this genus have been collected in many other localities in South and Central America. In this paper, the genus is revised and three new species are described: D. caxiuana sp. nov. (northern South America), D. inaculeatus sp. nov. (northern South America), and D. sensibilis sp. nov. (Costa Rica). The distribution of D. peperpotensis is extended to include French Guiana. Photographs of the type material of the new species and illustrations of male genitalia of all species are provided, as well as a key to species. 

scholarly journals Diversity and distribution of Epeorus (Caucasiron) (Ephemeroptera, Heptageniidae) in Iran, with descriptions of three new species

ZooKeys ◽  
2020 ◽  
Vol 947 ◽  
pp. 71-102
Author(s):  
Ľuboš Hrivniak ◽  
Pavel Sroka ◽  
Jindřiška Bojková ◽  
Roman J. Godunko ◽  
Javid Imanpour Namin ◽  
...  
Keyword(s):  
New Species ◽  
Habitat Preferences ◽  
Molecular Data ◽  
Central Iran ◽  
Integrative Approach ◽  
Northern Iran ◽  
Coi Sequences ◽  
Morphological And Molecular Data ◽  
Three New Species ◽  
First Time

Combining morphological and molecular data in an integrative approach, three new mayfly species of Epeorus (Caucasiron) are described. These include Epeorus (Caucasiron) alborzicus Hrivniak & Sroka, sp. nov. and Epeorus (Caucasiron) shargi Hrivniak & Sroka, sp. nov. from northern Iran, and Epeorus (Caucasiron) zagrosicus Hrivniak & Sroka, sp. nov. from central Iran. They are unambiguously delimited using both distance-based and likelihood-based approaches in the analyses of barcode COI sequences. Each new species is compared with other species of the subgenus and morphological diagnostic characters are provided. Based on extensive sampling of streams throughout the country, the distribution and habitat preferences of all Caucasiron species in Iran are assessed. Altogether, there are now six species recorded, among them also E. (C.) nigripilosus Sinitshenkova, 1976 is reported for the first time in Iran. Five species are distributed in the Alborz Mts. in northern Iran, one species was found in the Zagros Mts. in central Iran.

Hydrodessus ducke sp. n. and new records of other species of the genus (Coleoptera, Dytiscidae, Bidessini)

Zootaxa ◽  
2020 ◽  
Vol 4743 (1) ◽  
pp. 47-60
Author(s):  
CESAR J. BENETTI ◽  
MARIANO C. MICHAT ◽  
NEUSA HAMADA
Keyword(s):  
New Species ◽  
Body Size ◽  
Male Genitalia ◽  
French Guiana ◽  
New Records ◽  
New Taxon ◽  
Key To Species ◽  
Northern Brazil ◽  
Amazonas State ◽  
First Time

Hydrodessus ducke sp. n. is described and illustrated based on specimens collected in Amazonas State (northern Brazil), bringing the total number of Hydrodessus species to 33. The new species can be distinguished from other species in the genus by body size and shape, coloration, and characteristics of the elytral carina, prosternal process, metaventral carina, and male genitalia. The male of H. latotibialis Miller, 2016 is described and illustrated for the first time from specimens collected in Pará State, northern Brazil. New records for 17 species from Brazil, French Guiana and Suriname are provided, and the newest existing key to species is updated to accommodate the new taxon. 

scholarly journals Cryptic diversity and phylogeography of high alpine Sattleria—a case study combining DNA barcodes and morphology (Lepidoptera: Gelechiidae)

Zootaxa ◽  
2011 ◽  
Vol 2981 (1) ◽  
pp. 1 ◽  
Author(s):  
PETER HUEMER ◽  
PAUL D. N. HEBERT
Keyword(s):  
New Species ◽  
Male Genitalia ◽  
High Mountain ◽  
Sequence Information ◽  
Cryptic Diversity ◽  
Dna Barcodes ◽  
Adult Morphology ◽  
Mountain Systems ◽  
Three New Species

The taxonomy of Sattleria, a genus restricted to European high mountain systems, is critically revised based on morphology, DNA barcodes and phylogeography. Adult morphology combined with sequence information for the barcode region of COI supports the existence of 14 species. The full 658bp fragment of COI was obtained from 43 specimens representing 11 species and three shorter sequences were obtained from another two species. An illustrated key to the male genitalia of all species is provided. Three new species are described: Sattleria karsholti sp. nov. (Alpi Orobie, Adamello and Monte Baldo, Prov. Bergamo, Trento and Verona, Italy), Sattleria cottiella sp. nov. (Cottian Alps, Prov. Cuneo, Italy), and Sattleria graiaeella sp. nov. (Alpi Graie, Prov. Aosta, Italy; Savoie, France). Sattleria basistrigella Huemer, 1997 bona sp., stat. rev. is raised from subspecies rank of Sattleria triglavica Povolný, 1987 to species rank.

Three new species of Lamprigera Motschulsky (Coleoptera, Lampyridae) from China, with notes on known species

Zootaxa ◽  
2021 ◽  
Vol 4950 (3) ◽  
pp. 441-468
Author(s):  
ZHIWEI DONG ◽  
VOR YIU ◽  
GUICHUN LIU ◽  
JINWU HE ◽  
RUOPING ZHAO ◽  
...  
Keyword(s):  
New Species ◽  
Male Genitalia ◽  
Morphological Traits ◽  
New Records ◽  
Molecular Data ◽  
Number Of Species ◽  
Three New Species ◽  
First Time ◽  
The Himalaya ◽  
Diagnostic Traits

Lamprigera is found only in those countries from the Himalaya–Karakoran –Tibet region to SE Asia where 17 species have been previously recorded. These 17 include four species from China. In this work, combined molecular data (COI) and morphological traits identified eight species in our collections. Among these, we found three Chinese species (Lamprigera alticola Dong & Li, sp. nov., Lamprigera luquanensis Dong & Li, sp. nov. and Lamprigera magnapronotum Dong & Li, sp. nov.) that are new to science, bringing the total number of species of Lamprigera to 20 (17+3), and four other known species that are herein newly recorded for the first time in China. These four new records, the three new species, and the four previously known records bring the total number of Chinese species to 11. The morphological traits, especially the male genitalia and pronotum, are described for all eight species. We conclude that male genitalia and pronotum are the most important diagnostic traits for separating species of Lamprigera, and this is confirmed by COI data. 

scholarly journals Guianacara dacrya, a new species from the rio Branco and Essequibo River drainages of the Guiana Shield (Perciformes: Cichlidae)

2011 ◽  
Vol 9 (1) ◽  
pp. 87-96 ◽  
Author(s):  
Jessica H Arbour ◽  
Hernán López-Fernández
Keyword(s):  
New Species ◽  
River Basins ◽  
Guiana Shield ◽  
Dorsal Fin ◽  
White Spots ◽  
Tooth Plate ◽  
Northern Brazil ◽  
Pharyngeal Jaw ◽  
River Drainages ◽  
A New Species

A new species of Guianacara is described from tributaries of the Essequibo River and the rio Branco in Guyana and northern Brazil. Guianacara dacrya, new species, can be diagnosed from all congeners by the possession of a unique infraorbital stripe and by the shape of the lateral margin of the lower pharyngeal jaw tooth plate. Guianacara dacrya can be further distinguished from G. geayi, G. owroewefi, G. sphenozona and G. stergiosi by the possession of a thin midlateral bar, from G. cuyunii by the possession of dusky branchiostegal membranes and from G. oelemariensis by the possession of two supraneurals. This species differs from most congeners by the presence of white spots on the spiny portion of the dorsal fin, the placement of the midlateral spot, the presence of filaments on the dorsal, anal and in rare cases the caudal-fin and from at least the Venezuelan species by several morphometric variables. Guianacara dacrya is known from the Essequibo, Takutu and Ireng River basins of Guyana and possibly from the rio Uraricoera in the rio Branco basin in Brazil. A key to the species is provided.

Three new species of Sectonema Thorne, 1930 (Dorylaimida: Aporcelaimidae) from Vietnam

Nematology ◽  
2016 ◽  
Vol 18 (5) ◽  
pp. 517-536 ◽  
Author(s):  
Sergio Álvarez-Ortega ◽  
Thi Anh Duong Nguyen ◽  
Joaquín Abolafia ◽  
Thi Thanh Tam Vu ◽  
Michael Bonkowski ◽  
...  
Keyword(s):  
New Species ◽  
Phylogenetic Relationship ◽  
Ventral Side ◽  
Molecular Data ◽  
Evolutionary Tree ◽  
Neck Length ◽  
Natural Habitats ◽  
Line Drawings ◽  
Close Phylogenetic Relationship ◽  
Three New Species

Three new species of the genus Sectonema collected from natural habitats in Vietnam are studied, described and illustrated, including line drawings, LM and/or SEM pictures. Sectonema birrucephalum sp. n. is characterised by its 2.73-4.35 mm long body, lip region 18-20 μm broad and offset by deep constriction, odontostyle 10.0-11.5 μm long on its ventral side, 659-989 μm long neck, pharyngeal expansion occupying 63-68% of total neck length, uterus a simple tube, 221-277 μm long, pars refringens vaginae present, V = 54-56, tail short (31-43 μm, c = 85-111, c′ = 0.6-0.8) and rounded, spicules 72-75 μm long, and four or five irregularly spaced ventromedian supplements beyond the range of the spicules. Sectonema buccociliatum sp. n. is distinguished by its 2.00-2.46 mm long body, lip region offset by constriction, 19-20 μm broad and bearing perioral cilia-like structures, odontostyle 13-14 μm long at its ventral side, 530-625 μm long neck, pharyngeal expansion occupying 62-69% of total neck length, uterus a simple tube, 116-152 μm long, pars refringens vaginae present, V = 56-62, tail short (23-31 μm, c = 72-104, c′ = 0.6-0.8) and rounded, spicules 56-68 μm long, and 3-5 spaced and weakly developed ventromedian supplements beyond the range of the spicules. Sectonema ciliatum sp. n. is characterised by its 2.79-3.13 mm long body, lip region offset by constriction, 21-22 μm broad and bearing perioral cilia-like structures, odontostyle 14-15 μm long at its ventral side, 699-722 μm long neck, pharyngeal expansion occupying 60% of total neck length, uterus a simple tube, 201-244 μm long, pars refringens vaginae present, V = 52-53, tail short (33-35 μm, c = 82-92, c′ = 0.6-0.7) and rounded, spicules 70-72 μm long, and three or four spaced and weakly developed ventromedian supplements beyond the range of the spicules. Molecular data obtained for S. ciliatum sp. n. and the derived evolutionary tree show a close phylogenetic relationship with other species of the genus.

Sign in / Sign up

Export Citation Format

Share Document