A new species of Dichelops (Diceraeus) Dallas and the so-far unknown male of Dichelops (Prodichelops) divisus (Walker, 1867) are described, based upon morphological characters. D. (Dice.) caatinguensis sp. nov. is compared to the other four species of Diceraeus. Revised keys to separate the subgenera of Dichelops and the species of Diceraeus are also presented. D. (P.) divisus male is described and compared to the type species. Comparative illustrations of external and internal genitalia of the species are provided.
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http://dx.doi.org/10.11646/zootaxa.3609.1.4 | DOI Listing |
Braz J Biol
July 2022
Universidade Estadual de Londrina - UEL, Departamento de Agronomia, Programa de Pós-graduação em Agronomia, Londrina, PR, Brasil.
Entomopathogenic nematodes (EPNs) from Heterorhabditidae and Steinernematidae families are extensively used to control insect pests. In Brazil, however, relatively few studies have identified and characterized these entomopathogens. The objective of this study was to identify and characterize an EPN isolate obtained from soil samples collected in the state of Paraná, Brazil.
View Article and Find Full Text PDFJ Econ Entomol
April 2022
Department of Plant Protection, Universidade Regional Integrada do Alto Uruguai e Missões (URI), Universidade das missões avenue 464, Santo Ângelo, Rio Grande do Sul 98802-470, Brazil.
This study evaluated intra- and interspecific variation regarding the susceptibility to insecticides of key pentatomid pests of soybean (Glycine max L.) and maize (Zea mays L.) crops in Brazil.
View Article and Find Full Text PDFPest Manag Sci
June 2022
Instituto de Investigaciones en Biociencias Agrícolas y Ambientales (INBA-CONICET), Buenos Aires, Argentina.
Over the last decades, Argentine and Brazilian farmers have adopted no-tillage cultivation systems and multiple cropping, which have decreased the abundance of traditional pests, such as Nezara viridula, and favored the development of some stink bugs of secondary importance, like Dichelops furcatus, D. melacanthus and Euschistus heros. No-till farming leaves the soil undisturbed, to mitigate erosion, and sufficient crop residue on the field, which is used by D.
View Article and Find Full Text PDFPest Manag Sci
May 2021
Instituto de Investigaciones en Biociencias Agrícolas y Ambientales-CONICET, Buenos Aires, Argentina.
Background: Recently, in temperate and neotropical regions of South America the generalist stink bug Dichelops furcatus (Hemiptera: Pentatomidae) became a new pest of corn (Zea mays) seedlings. Implementation of no-tillage cultivation system left organic matter covering the soil, which shelters adults of stink bugs during winter. In spring, corn is sowed under soybean stubble and D.
View Article and Find Full Text PDFComp Cytogenet
November 2020
Universidade Estadual de Londrina (UEL), Rodovia Celso Garcia Cid, PR 445, Km 380, Caixa Postal 10.011, 86057-970, Londrina, PR, Brazil Universidade Estadual de Londrina Londrina Brazil.
In this paper, we present new cytogenetic data for three species of the family Pentatomidae: (Dallas, 1851), (Palisot de Beauvois, 1805), and (Dallas, 1851). All studied species presented holocentric chromosomes and inverted meiosis for the sex chromosomes. has 2 = 12 (10A + XY); showed 2 = 14 (12A + XY); and showed 2 = 14 (12A + XY).
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