scholarly journals Characterization of Female External Genitalia and Eggs of Four South American Species of the Triatoma Laporte, 1832 Genus (Hemiptera: Reduviidae: Triatominae)

Insects ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 537
Author(s):  
Tiago Belintani ◽  
Jader Oliveira ◽  
Heloisa Pinotti ◽  
Kaio Cesar Chaboli Alevi ◽  
Juliana Damieli Nascimento ◽  
...  
Keyword(s):  
Vector Potential ◽  
External Genitalia ◽  
Sensu Stricto ◽  
Female Genitalia ◽  
South American ◽  
South American Species ◽  
Female External Genitalia

Triatoma is the most diversified and one of the most important genera from an epidemiological perspective. Given the difficulty in identifying some species of the Triatoma genus, morphological, histological, and morphometric studies were performed to provide new characters that make it possible to differentiate T. garciabesi, T. guasayana, T. patagonica, and T. sordida sensu stricto, triatomines that overlap geographically and have vector potential. Through the external female genitalia, as well as morphology, morphometry, and histology of eggshells, it was possible to discriminate the four species. In addition, this study reinforces the taxonomic validity of T. garciabesi and provides new data for discussion on systematic issues of T. guasayana and T. patagonica.

scholarly journals Two new species of the genus Oryctopterus (Orthoptera: Stenopelmatidae: Oryctopinae) from India, with some notes on biology

2021 ◽  
Vol 748 ◽  
Author(s):  
S.R. Hiremath ◽  
K.D. Prathapan
Keyword(s):  
New Species ◽  
Food Habits ◽  
External Genitalia ◽  
Female Genitalia ◽  
Male And Female ◽  
Two New Species ◽  
And Behavior ◽  
First Time ◽  
Female External Genitalia

The genus Oryctopterus Karny, 1937 (Orthoptera, Stenopelmatidae, Oryctopinae) is reported from India for the first time and two new species, Ot. varuna sp. nov. and Ot. yeshwanthi sp. nov. are described. Male and female external genitalia of Ot. varuna sp. nov. and female genitalia of Ot. yeshwanthi sp. nov. are figured and described. Notes on seasonality, food habits and behavior of Ot. varuna sp. nov. are provided.

scholarly journals Characterization of the Buccula, Rostrum, Stridulatory Sulcus, Scutellum, and External Female Genitalia of Triatoma carcavalloi (Jurberg, Rocha & Lent, 1998), Triatoma circummaculata (Stål, 1859), and Triatoma rubrovaria (Blanchard, 1843) (Hemiptera, Reduviidae, Triatominae)

2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Margareth Alves Ribeiro Cardozo de Almeida ◽  
Simone Patrícia Carneiro Freitas ◽  
Maria Luiza Ribeiro de Oliveira ◽  
Nathanielly Rocha Casado de Lima ◽  
Elizabeth Ferreira Rangel ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
External Genitalia ◽  
Female Genitalia ◽  
Ventral Region ◽  
Important Species ◽  
Wide Geographical Distribution ◽  
Morphological Differences ◽  
Scanning Electron

In Brazil, Triatoma rubrovaria (Blanchard, 1843) is the most important species in epidemiological terms in the State of Rio Grande do Sul, due to its wide geographical distribution in this state, followed by T. carcavalloi (Jurberg, Rocha & Lent, 1998) and T. circummaculata (Stål, 1859). Structural analysis of the ventral region of the head (rostrum and buccula), thorax (stridulatorium sulcus and scutellum), and external female genitalia of adults of T. rubrovaria, T. carcavalloi, and T. circummaculata is described here. Scutellum, head, rostrum, and part of the thorax (prosternum) containing the stridulatory sulcus, in both male and female, and the sixth abdominal segment of the female, containing the external genitalia, were processed for scanning electron microscopy studies as routine. Morphological differences in the analyzed structures for all the three Triatoma species studied were detected under scanning electron microscopy. This study confirms the grouping of the T. rubrovaria, T. carcavalloi, and T. circummaculata in ‘T. rubrovaria subcomplex’ by their morphological similarities.

scholarly journals Chromosomal characterization of three native and one cultivated species of Lathyrus L. in Southern Brazil

1999 ◽  
Vol 22 (4) ◽  
pp. 557-563 ◽  
Author(s):  
Alice Battistin ◽  
Elaine Biondo ◽  
Liliana Gressler May Coelho
Keyword(s):  
Interphase Nucleus ◽  
Nucleolar Organizer ◽  
Chromosome Length ◽  
Nucleolar Organizer Regions ◽  
South American ◽  
South American Species ◽  
Metaphase Chromosomes ◽  
Interphase Nuclei ◽  
Cultivated Species

Mitotic metaphase chromosomes and interphase nuclei of nine populations of three South American species of Lathyrus (L. pubescens, L. nervosus and L. crassipes) and six populations of the cultivated species L. odoratus were analyzed. All populations had 2n = 2x = 14 chromosomes. There were significant differences among populations within each species and among species in the number of metacentric, submetacentric and subtelocentric chromosomes, the number and location of secondary constrictions, chromosome length (longest and shortest), total haploid complement, arm ratio, and centromeric index. L. odoratus showed the highest tendency towards karyotype symmetry whereas the three South American species showed a moderate tendency towards asymmetry, with L. pubescens being the most asymmetrical. Silver staining was used to identify the nucleolar organizer regions (NORs) and the number of nucleoli per interphase nucleus in each species. In L. pubescens and L. nervosus, the NORs were located on the secondary constriction of the long arm of pair 7, in L. crassipes, the NOR was proximal being located in the pair of metacentric chromosomes, and in L. odoratus there were four terminal NORs on the short arms of pairs 4 and 5. The four species had a maximum of four nucleoli per interphase nucleus, indicating the presence of four regions with active ribosomal genes in each case.

Taxonomy of five neglected South American species of Dargida Walker (Lepidoptera: Noctuidae)

Zootaxa ◽  
2020 ◽  
Vol 4853 (2) ◽  
pp. 199-217
Author(s):  
DIEGO RODRIGO DOLIBAINA ◽  
GERMAN SAN BLAS ◽  
ALEXANDRE SPECHT ◽  
MIRNA MARTINS CASAGRANDE ◽  
OLAF HERMANN HENDRIK MIELKE
Keyword(s):  
Junior Synonym ◽  
Female Genitalia ◽  
South American ◽  
South American Species ◽  
Male And Female ◽  
New Synonyms ◽  
First Time ◽  
Lepidoptera Noctuidae

The taxonomy of five South American species of Dargida Walker currently allocated in Leucania Ochsenheimer (four species) and in Lasionycta Aurivillius (one species) is revised. Leucania roseilinea (Köhler, 1947), Leucania phaeoneura Hampson, 1913, Leucania mocoides Dognin, 1897, Leucania alboradiata (Hampson, 1905) and Lasionycta radiata (Köhler, 1966), are here combined with the genus Dargida Walker for the first time (comb. nov.). Two new synonyms are proposed, Leucania roseilineoides Poole, 1989 is an objective junior synonym of Borolia roseilinea Köhler, 1947 (syn. nov.) (ICZN 51.4), and B. lilloana Köhler, 1947 is a subjective junior synonym of Leucania phaeoneura Hampson, 1913 (syn. nov.). Lectotype for Borolia lilloana is designated to ensure nomenclatural stability and recognizability of the taxon. All species are redescribed and discussed, and the habitus and male and female genitalia (when available) are given, as well as an updated geographical map. 

Exaggerated female genitalia in two new spider species (Araneae: Pholcidae), with comments on genital evolution by female choice versus antagonistic coevolution

2005 ◽  
Vol 36 (3) ◽  
pp. 285-292 ◽  
Author(s):  
Cristina Rheims ◽  
Bernhard Huber ◽  
Antonio Brescovit
Keyword(s):  
Female Choice ◽  
External Genitalia ◽  
Female Genitalia ◽  
Cooperative Behaviour ◽  
Male And Female ◽  
Spider Species ◽  
Antagonistic Coevolution ◽  
Morphological Findings ◽  
Competing Models ◽  
Female External Genitalia

AbstractTwo new species are described that are remarkable in having exaggerated female genitalia: Mesabolivar samatiaguassu sp. n. and M. cuarassu sp. n.. Comparative evidence as well as size measurements of male and female structures suggest that the exaggerated female external genitalia correlate functionally with elongated male cheliceral apophyses. These morphological findings are discussed in the light of competing models of genital evolution. Luring mating acts, female cooperative behaviour and morphology, as well as the probable costs associated with the female structures argue against the antagonistic coevolution model and favour sexual selection by cryptic female choice.

A review of the South American species of Heilus Kuschel, 1955 (Curculionidae: Molytinae: Molytini: Hylobiina) with emphasis on those from Brazil

Zootaxa ◽  
2020 ◽  
Vol 4861 (2) ◽  
pp. 151-187
Author(s):  
ALINE DE OLIVEIRA LIRA ◽  
WESLEY OLIVEIRA DE SOUSA ◽  
GERMANO HENRIQUE ROSADO-NETO ◽  
GEANE BRIZZOLA DOS SANTOS ◽  
MARINÊZ ISAAC MARQUES
Keyword(s):  
Species Identification ◽  
Geographic Distribution ◽  
Type Species ◽  
Female Genitalia ◽  
Type Material ◽  
South American ◽  
South American Species ◽  
Male And Female ◽  
First Time ◽  
Eleven Species

The fourteen described South American species of Heilus (Curculionidae, Molytinae, Molytini, Hylobiina) are reviewed for the first time. Eleven species are redescribed based on specimens (almost exclusively from Brazil) examined by us: H. bistigma (Hustache, 1938), H. faldermanni (Boheman, 1836), H. fasciculatus (Boheman, 1843), H. freyreissi (Boheman, 1836), H. inaequalis (Boheman, 1836) [= type species of the genus], H. iniquus (Kirsch, 1874), H. myops (Boheman, 1836), H. ochrifer (Boheman, 1843), H. pupillatus (Olivier, 1790), H. rufescens (Boheman, 1836), and H. tuberculosus (Perty, 1832). Diagnoses of one additional Brazilian species, Heilus admixtus (Hustache, 1938), and two additional South American species, H. asperulus (Erichson, 1847), and H. inornatus (Kirsch, 1874), are presented based on the literature and by examination of images of the type material. Integument texture and the variations in the patterns of maculation are the main characteristics used for species identification. Geographic distribution, descriptions of male and female genitalia are provided for eleven redescribed species, together with habitus photographs, and an identification key to the fourteen described South American species. 

Oreiallagma gen. nov. with a redefinition of Cyanallagma Kennedy 1920 and Mesamphiagrion Kennedy 1920, and the description of M. dunklei sp. nov. and M. ecuatoriale sp. nov. from Ecuador (Odonata: Coenagrionidae)

Zootaxa ◽  
2008 ◽  
Vol 1805 (1) ◽  
pp. 1 ◽  
Author(s):  
NATALIA VON ELLENRIEDER ◽  
ROSSER W. GARRISON
Keyword(s):  
New Species ◽  
South America ◽  
Type Species ◽  
New Genus ◽  
Sensu Stricto ◽  
South American ◽  
South American Species ◽  
Diagnostic Characters ◽  
Distribution Maps ◽  
Two New Species

In this paper we re-evaluate Cyanallagma Kennedy 1920, which currently includes 15 species, and we address another five species that share diagnostic characters with some of them but are currently placed within Leptagrion Selys 1876, Mesamphiagrion Kennedy 1920, and Telagrion Selys 1876. A new genus, Oreiallagma, is described to include five species originally placed in Acanthagrion Selys 1876, Cyanallagma, and Telagrion. These species are O. thelkterion (De Marmels 1997) (type species), O. acutum (Ris 1918), O. oreas (Ris 1918), O. prothoracicum (Kimmins 1945), and O. quadricolor (Ris 1918). The last stadium larva of O. quadricolor is described. The remaining species currently includedin Cyanallagma are allocated to two separate genera: Cyanallagma sensu stricto and Mesamphiagrion. Cyanallagma sensu stricto comprises southern South American species including the type species, Cyanallagma interruptum (Selys 1876). Mesamphiagrion Kennedy 1920 includes a cluster of species from northwestern South America that are considered congeneric with the type species Mesamphiagrion occultum (Ris 1918). Two new species from Ecuador, M. dunklei and M. ecuatoriale, are described and Argia hebdomatica Navás 1934 is found to be a junior synonym of M. ovigerum (Calvert 1909). Synonymic lists, diagnoses, illustrations, keys, and distribution maps for the three genera are provided.

Revision of the southern South American species of Philonthus Stephens (Coleoptera: Staphylinidae)

Zootaxa ◽  
2010 ◽  
Vol 2595 (1) ◽  
pp. 1 ◽  
Author(s):  
MARIANA CHANI-POSSE
Keyword(s):  
New Species ◽  
External Morphology ◽  
Female Genitalia ◽  
Valid Species ◽  
South American ◽  
New Combinations ◽  
South American Species ◽  
Male And Female ◽  
Distribution Maps ◽  
Two New Species

The southern South American species of the genus Philonthus Stephens, 1829 (Staphylininae: Staphylinini) are revised using characters of external morphology and male and female genitalia. Three species of Philonthus are transferred to the genus Belonuchus Nordmann, 1837 resulting in the following new combinations: B. aluticollis (Bernhauer, 1921), B. flavicoxis (Bernhauer, 1912) and B. weiserianus (Bernhauer, 1921). Twenty-five valid species are recognized for the region in the present study: Philonthus aeruginosus Nordmann 1837, P. argus Herman 2001, P. bicoloristylus ChaniPosse 2004, P. bonariensis Bernhauer 1909, P. convexicollis Lynch-Arribálzaga 1884, P. cribriventris Bernhauer 1912, P. discoideus (Gravenhorst, 1802), P. figulus Erichson 1840, P. flavolimbatus Erichson 1840, P. hepaticus Erichson 1840, P. jenseni Bernhauer 1912, P. longicornis Stephens 1832, P. lynchi Bernhauer & Schubert 1914, P. pallipes Blanchard 1842, P. pauxillus Solsky 1868, P. politus (Linnaeus, 1758), P. quadraticeps Boheman 1858, P. rectangulus Sharp 1874, P. rubromaculatus Blanchard 1842, P. ruficauda Bernhauer 1934, P. sericans (Gravenhorst, 1802), P. stenocephalus Scheerpeltz 1972, P. varians (Paykull, 1789). Two new species are described: P. floresi and P. bruchianus. Philonthus feralis Erichson 1840, previously recorded for this region, is also redescribed. Diagnoses, redescriptions or descriptions, illustrations, bionomic information and distribution maps for all species are presented. An identification key to the southern South American species of the genus is provided. Lectotypes are designated for Philonthus aeruginosus Nordmann 1837, P. aluticollis Bernhauer 1921, P. apicipennis Lynch-Arribálzaga 1884, P. convexicollis LynchArribálzaga 1884, P. figulus Erichson 1840, P. flavicoxis Bernhauer 1912, P. jenseni Bernhauer 1912, P. pallipes Blanchard 1842, P. rubromaculatus Blanchard 1842, P. stenocephalus Scheerpeltz 1972, P. tucumanensis Bernhauer 1934 and P. weiserianus Bernhauer, 1921.

Cnidochloa: A New Genus of Grasses from Brazil (Poaceae: Panicoideae: Paniceae)

2020 ◽  
Vol 105 (2) ◽  
pp. 183-194
Author(s):  
Fernando O. Zuloaga ◽  
Sandra S. Aliscioni ◽  
M. Amalia Scataglini
Keyword(s):  
New Genus ◽  
Phylogenetic Position ◽  
South American ◽  
The South ◽  
South American Species ◽  
Molecular Characters

Generic boundaries of the South American species Panicum longipedicellatum Swallen are explored and compared with allied genera of the tribe Paniceae. On the basis of morphological, anatomical, and molecular characters a new genus, Cnidochloa Zuloaga, is proposed. The phylogenetic position of the new genus within the Paniceae is evaluated.

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