scholarly journals Amazonopsis, an unusual new genus of riffle beetle from South America with two new species (Coleoptera, Elmidae, Elminae)

ZooKeys ◽  
2018 ◽  
Vol 803 ◽  
pp. 71-92 ◽  
Author(s):  
Cheryl B. Barr
Keyword(s):  
New Species ◽  
Sexual Dimorphism ◽  
South America ◽  
Male Genitalia ◽  
French Guiana ◽  
New Genus ◽  
Male And Female ◽  
Two New Species ◽  
Secondary Sexual Dimorphism ◽  
Secondary Sexual

Amazonopsisgen. n.is described to includeA.theranyisp. n.from Peru, Venezuela and French Guiana, andA.camachoisp. n.from Venezuela. The descriptions are accompanied by figures illustrating the male and female habitus ofA.theranyi, the male habitus ofA.camachoi, and male genitalia of both species.Amazonopsistheranyiexhibits pronounced secondary sexual dimorphism which likewise may be a characteristic of the genus.Amazonopsismales have modified protarsal and mesotarsal claws, a pair of small spines on the anterior prosternum, and a pair of ventrally directed processes on the posterior metaventrite. Females ofA.theranyidisplay a pair of unique, oval perforations in the cuticle of the pronotum and have unmodified claws; females ofA.camachoiare unknown. Descriptions are furnished of the stream habitats and microhabitats where the study specimens were collected.

scholarly journals Two new species of Characidium Reinhardt (Characiformes: Crenuchidae) from northeastern Brazilian coastal drainages

2015 ◽  
Vol 13 (3) ◽  
pp. 487-498 ◽  
Author(s):  
Angela M. Zanata ◽  
Priscila Camelier
Keyword(s):  
New Species ◽  
Sexual Dimorphism ◽  
Posterior Margin ◽  
The Other ◽  
Caudal Fin ◽  
Two New Species ◽  
Black Blotch ◽  
Secondary Sexual Dimorphism ◽  
Secondary Sexual

Two new species of Characidium , onefrom the rio Pardo basin, and anotherfrom the rio Paraguaçu basin, Bahia, Brazil, are described. The first new speciesis distinguished from its congeners by having conspicuous black vertical traces on body, formed by the concentration of melanophores along posterior margin of scales. The species further differs from most congeners by the presence of a conspicuous 3-shaped black blotch on the caudal fin and isthmus not covered by scales. The other new species is distinguished from congeners by having irregular dark blotches on dorsum alternating elongation to one or the other side of body, usually not connected to lateral blotches. The species can be further characterized by the absence of conspicuous blotches or bars on fins and the presence of secondary sexual dimorphism, such as pelvic fins of mature males longer than in females and with bony hooks.

Revision of Australian Parathyginus with description of two new species, along with first detailed description of aedeagus in the family Heterogastridae (Hemiptera: Heteroptera: Lygaeoidea)

Zootaxa ◽  
2021 ◽  
Vol 5016 (4) ◽  
pp. 503-522
Author(s):  
M. B. MALIPATIL
Keyword(s):  
New Species ◽  
Male Genitalia ◽  
Type Species ◽  
Female Genitalia ◽  
Male And Female ◽  
Australian Species ◽  
The Family ◽  
Two New Species

The Australian species of the small heterogastrid genus Parathyginus Scudder, 1957 have been reviewed, resulting in the establishment of the junior subjective synonymy of P. doddi (Distant, 1918) with P. signifer (Walker, 1872), and the description of two new species, P. australis sp. nov. and P. acuminatus sp. nov. A redescription of the genus is provided with emphasis on male and female genitalia characters, along with a key to all included Australian species. Male genitalia, particularly the details of the aedeagus, have been rarely studied in this genus or for that matter the family Heterogastridae particularly due to the difficulty in inflating the inflatable sections. In this study, therefore, an attempt was made to fully inflate and describe the aedeagus of all the species included in this contribution, as well as of Heterogaster urticae (Fabricius, 1775), the type species of the oldest genus Heterogaster Schilling, 1829, of the family Heterogastridae.  

New records and two new species of Xiphocentron Brauer 1870 (Trichoptera, Xiphocentronidae) from southern Atlantic Forest, Brazil

Zootaxa ◽  
2020 ◽  
Vol 4851 (2) ◽  
pp. 386-400
Author(s):  
ALBANE VILARINO ◽  
PITÁGORAS C. BISPO
Keyword(s):  
New Species ◽  
South America ◽  
Atlantic Forest ◽  
Male Genitalia ◽  
New Records ◽  
Ventral Margin ◽  
Diagnostic Characters ◽  
Morphological Variations ◽  
Two New Species

Xiphocentron is the most species-rich genus of the pantropical family Xiphocentronidae. Among its five subgenera, Antillotrichia is the most diverse and the only one to occur in South America and Antilles. In the present study, two new species of Xiphocentron (Antillotrichia) are described from southern Atlantic Forest, Brazil. Xiphocentron gwarakeraba sp. nov. is diagnosed by the very elongate inferior appendage not bearing spines and with a simple mesal sclerite; X. muelleri sp. nov. is diagnosed by the inferior appendage with its ventral margin produced posterad and distinctly truncate. New distributional records are provided for X. acqualume, X. jaguare, X. kamakan, and X. maracanan. Additional non-genital diagnostic characters are presented for X. jaguare, and intraspecific morphological variations of forewing fork II (R3 and R4) and male genitalia are described for X. maracanan. 

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. 

Parakari a New Genus of the Family Baetidae (Insecta: Ephemeroptera) from Guyana Highlands

Zootaxa ◽  
2011 ◽  
Vol 3032 (1) ◽  
pp. 47 ◽  
Author(s):  
CAROLINA NIETO ◽  
TOMÁŠ DERKA
Keyword(s):  
New Species ◽  
South America ◽  
New Genus ◽  
The Other ◽  
Obtuse Angle ◽  
Diverse Families ◽  
The Family ◽  
Two New Species ◽  
High Level ◽  
Table Mountains

Baetidae is one of the most diverse families of Ephemeroptera. In South America this family now encompasses 27 genera and more than 130 species. The Guyana region is known for its extraordinary diversity and high level of endemism, which is, above all, remarkable at the tops of the isolated flat-topped table mountains – tepuis. Recently various international speleological expeditions to Churí-tepui explored the cave systems of this mountain. Here we describe a new genus of Baetidae recently found during the mentioned expeditions to Churí-tepui and Auyán-tepui. Parakari n. gen. can be distinguish from the other genera of this family, among other characters, in the nymphs by the absence of abdominal gills I, tarsal claws with subapical denticle larger than the others, right mandible with prostheca bifid and pectinate and with incisors positioned in obtuse angle to mola area, lingua with a tuft of setae, segment II of maxillary palpi with a concavity and a hole apically and segment II of labial palpi with a strong distomedial projection. In the adults the hind wings are absent and genitalia with segment II of forceps with a constriction, segment III elongate and long. Two new species are included in this genus; each one was collected at different tepui. A key and illustrations are included.

A new highly dimorphic genus of Sminthuridae (Collembola: Symphypleona) from Brazil

Zootaxa ◽  
2020 ◽  
Vol 4729 (1) ◽  
pp. 25-46 ◽  
Author(s):  
DOUGLAS ZEPPELINI ◽  
RONIERE A. BRITO ◽  
ROBSON ZAMPAULO ◽  
ESTEVAM C.A. LIMA
Keyword(s):  
New Species ◽  
Sexual Dimorphism ◽  
New Genus ◽  
Antennal Segment ◽  
Apical Organ ◽  
Two New Species

A new genus and two new species of Sminthurinae are described. Keratosminthurus tapigu gen. nov. sp. nov. and K. calamitosus sp. nov. show a combination of features that redefines the subfamily Sminthurinae, such as a pair of sminthuroid chaetae, unguis without cavity, nine apical chaetae on tibiotarsus, 11 or more anterior dental chaetae, fourth antennal segment clearly subdivided into many (18 or more) subsegments, and asymmetric apex of mucro. The new genus also presents a striking sexual dimorphism, with modifications on male apical organ of antennal segment III, spines on the clypeus and special organs on the interocular area. 

New euophryine jumping spiders from Central and South America (Araneae: Salticidae: Euophryinae)

Zootaxa ◽  
2012 ◽  
Vol 3578 (1) ◽  
pp. 1 ◽  
Author(s):  
JUN-XIA ZHANG ◽  
WAYNE P. MADDISON
Keyword(s):  
New Species ◽  
South America ◽  
Central America ◽  
New Genus ◽  
The Other ◽  
Jumping Spiders ◽  
Two New Species

Twenty-two new species and one new genus of euophryine jumping spiders from Central America and South America aredescribed. The new genus is Ecuadattus (E. elongatus sp. nov., E. napoensis sp. nov., E. pichincha sp. nov. and the typespecies E. typicus sp. nov.). The other new species belong to the genera Amphidraus (A. complexus sp. nov.), Belliena (B.ecuadorica sp. nov.), Chapoda (C. angusta sp. nov., C. fortuna sp. nov. and C. gitae sp. nov.), Ilargus (I. foliosus sp. nov.,I. galianoae sp. nov., I. macrocornis sp. nov., I. moronatigus sp. nov., I. pilleolus sp. nov. and I. serratus sp. nov.), Maeota(M. dorsalis sp. nov., M. flava sp. nov. and M. simoni sp. nov.), Soesilarishius (S. micaceus sp. nov. and S. ruizi sp. nov.)and Tylogonus (T. parvus sp. nov. and T. yanayacu sp. nov.). Diagnostic illustrations are provided for all new species. Photographs of living spiders are also provided for some new species.

A new Oriental genus of Iassini leafhoppers (Hemiptera: Cicadellidae: Iassinae) with description of four new species

Zootaxa ◽  
2010 ◽  
Vol 2641 (1) ◽  
pp. 15 ◽  
Author(s):  
WU DAI ◽  
XINMIN ZHANG ◽  
Yalin Zhang ◽  
C. H. DIETRICH
Keyword(s):  
New Species ◽  
Male Genitalia ◽  
Type Species ◽  
New Genus ◽  
Key To Species ◽  
Two New Species ◽  
One New Species

Sinojassus gen. nov. of tribe Iassini is described based on: two new species from China, S. loberus Dai, Zhang & Zhang sp. nov. (type species), S. aspinus Dai, Zhang & Zhang sp. nov.; one new species from China and Thailand, S. compressus Dai, Zhang & Zhang sp. nov.; and one new species from Vietnam, S. webbi Dai & Dietrich sp. nov. Detailed morphological descriptions, illustrations and a key to species are provided. The new genus resembles Coriojassus Evans, Hyalojassus Evans and Trocnadella Singh-Pruthi in the structure of the male genitalia. The style has an elongate apodeme and short apophysis, the connective is absent, and the aedeagus is simple, without processes, and connected to other parts of the genitalia by membranous ligaments. A key to Oriental genera of Iassini is also provided.

On the genus Gastrodynerus Bohart, 1984 (Hymenoptera: Vespidae: Eumeninae)

Zootaxa ◽  
2019 ◽  
Vol 4671 (2) ◽  
pp. 240-250
Author(s):  
YURI CAMPANHOLO GRANDINETE ◽  
GUSTAVO BELLINI CORTES ◽  
JAMES MICHAEL CARPENTER
Keyword(s):  
New Species ◽  
South America ◽  
Central America ◽  
Male Genitalia ◽  
New World ◽  
New Genus ◽  
Taxonomic Revision ◽  
Identification Key ◽  
External Morphology

The genus Gastrodynerus is here revised based on external morphology and male genitalia. Bohart (1984) proposed Gastrodynerus as a new genus with three species: G. vanduzeei (Bohart 1948), G. searsi Bohart, 1984, and G. stangei Bohart, 1984. Later, Rodriguez-Palafox (1996) added G. tacubayae (de Saussure, 1857). Herein, we describe four new species from Central America and South America: G. guatemalensis sp. nov.; G. barretti sp. nov.; G. aimara sp. nov. and G. yungaensis sp. nov. After this taxonomic revision, the Gastrodynerus includes eight species widely distributed in the New World. An identification key is provided for all of the species. 

Chromatophotina, a remarkable new genus of praying mantid from the Neotropical Region and its two new species (Mantodea: Mantidae, Photinainae)

Zootaxa ◽  
2010 ◽  
Vol 2415 (1) ◽  
pp. 22 ◽  
Author(s):  
JULIO RIVERA
Keyword(s):  
New Species ◽  
Male Genitalia ◽  
New Genus ◽  
Neotropical Region ◽  
Bright Yellow ◽  
Two New Species ◽  
Yellow Orange ◽  
Praying Mantid

A new genus and two new species of Neotropical praying mantids are described: Chromatophotina awajun from Peru and Chromatophotina cofan from Ecuador. Study of the male genitalia suggests that Chromatophotina is a member of the tribe Photinaini, subfamily Photinainae, family Mantidae. Chromatophotina is distinguishable from other Photinainae by several unique characters, including the bright yellow-orange coloration of the metathoracic wings of the females, unique among the Photinainae. Additional remarks on the distribution and systematics of the new genus are also provided.

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