Pub Date : 2022-01-01DOI: 10.1590/1806-9665-rbent-2022-0081
Flávia Fagundes de Paula, B. Souza, C. Bezerra
{"title":"Compatibility between the predators Cryptolaemus montrouzieri (Coleoptera: Coccinellidae) and Chrysoperla externa (Neuroptera: Chrysopidae) in the control of Planococcus citri (Hemiptera: Pseudococcidae) associated with rose crop","authors":"Flávia Fagundes de Paula, B. Souza, C. Bezerra","doi":"10.1590/1806-9665-rbent-2022-0081","DOIUrl":"https://doi.org/10.1590/1806-9665-rbent-2022-0081","url":null,"abstract":"","PeriodicalId":49622,"journal":{"name":"Revista Brasileira de Entomologia","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67162827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1590/1806-9665-rbent-2022-0016
Luana Karoline Ribeiro, C. de Lara, Aloisio Coelho Junior, P. S. Ferreira, J. Resende, J. Bento, C. Nardi
{"title":"Morphology of immature stages, biological parameters and life table of Microtechnites bractatus (Hemiptera: Miridae) on different host plants","authors":"Luana Karoline Ribeiro, C. de Lara, Aloisio Coelho Junior, P. S. Ferreira, J. Resende, J. Bento, C. Nardi","doi":"10.1590/1806-9665-rbent-2022-0016","DOIUrl":"https://doi.org/10.1590/1806-9665-rbent-2022-0016","url":null,"abstract":"","PeriodicalId":49622,"journal":{"name":"Revista Brasileira de Entomologia","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67162349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1590/1806-9665-rbent-2021-0085
Giovanna Silva Viana, M. C. Paula, A. D. Eulalio, Poliana Galvão dos Santos, S. E. Lima-Júnior, W. Antonialli-Júnior
T R A C T Corpses in Brazil are commonly hidden in sugarcane plantations in the attempt to delay their finding and hinder the solution of the crime. On the other hand, these plantations are regularly sprayed with insecticides for pest control. Until now no study has reported the effects of insecticides on ant fauna. This study aimed to test the hypothesis that if a body hidden in a monoculture is accidentally contaminated by an insecticide, both the carcass decomposition pattern and the Formicidae fauna will be affected. To accomplish this, pig carcasses contaminated and non-contaminated were placed in a sugarcane monoculture environment and subsequently examined for data collection every 24 hours. The concentration used to contaminate the carcasses was 20 grams per liter of thiamethoxam. The decomposition patterns of contaminated carcasses were changed, in turn affecting the behavior of Formicidae fauna. A total of 5318 ants were collected, 3397 in contaminated carcasses and 1919 in non-contaminated carcasses, and 30 species of 11 genera were identified. According to the analysis, there are no differences between the composition of species between contaminated and non-contaminated carcasses, however, a significant difference was observed in the composition of species along the stages of decomposition between the two types of carcasses. Therefore, our hypothesis has been confirmed, contaminated carcasses undergo changes in their normal pattern of decomposition and the fauna of ants that act on them. As this group of insects has great importance for forensic sciences, the analysis of the experts should
{"title":"Formicidae fauna in pig carcasses contaminated by insecticide: implications for forensic entomology","authors":"Giovanna Silva Viana, M. C. Paula, A. D. Eulalio, Poliana Galvão dos Santos, S. E. Lima-Júnior, W. Antonialli-Júnior","doi":"10.1590/1806-9665-rbent-2021-0085","DOIUrl":"https://doi.org/10.1590/1806-9665-rbent-2021-0085","url":null,"abstract":"T R A C T Corpses in Brazil are commonly hidden in sugarcane plantations in the attempt to delay their finding and hinder the solution of the crime. On the other hand, these plantations are regularly sprayed with insecticides for pest control. Until now no study has reported the effects of insecticides on ant fauna. This study aimed to test the hypothesis that if a body hidden in a monoculture is accidentally contaminated by an insecticide, both the carcass decomposition pattern and the Formicidae fauna will be affected. To accomplish this, pig carcasses contaminated and non-contaminated were placed in a sugarcane monoculture environment and subsequently examined for data collection every 24 hours. The concentration used to contaminate the carcasses was 20 grams per liter of thiamethoxam. The decomposition patterns of contaminated carcasses were changed, in turn affecting the behavior of Formicidae fauna. A total of 5318 ants were collected, 3397 in contaminated carcasses and 1919 in non-contaminated carcasses, and 30 species of 11 genera were identified. According to the analysis, there are no differences between the composition of species between contaminated and non-contaminated carcasses, however, a significant difference was observed in the composition of species along the stages of decomposition between the two types of carcasses. Therefore, our hypothesis has been confirmed, contaminated carcasses undergo changes in their normal pattern of decomposition and the fauna of ants that act on them. As this group of insects has great importance for forensic sciences, the analysis of the experts should","PeriodicalId":49622,"journal":{"name":"Revista Brasileira de Entomologia","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67162377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-29DOI: 10.1590/1806-9665-rbent-2021-0057
M. F. Mendes, M. S. Gottschalk, R. Halinski, Henrique R. Moreira, Camila Dalmorra, V. L. S. Valente-Gaiesky
ABSTRACT The use of robust sample methodologies to estimate the highest number of species with different ecological requirements and traits is essential to the knowledge construction of the biodiversity and to establish wildlife assessment and monitoring programs. Our aims were to study the performance of colored pan traps in the capture of Drosophilidae (Diptera), a method never used for sampling this taxon. During six months, colored pan traps (blue, yellow and white) were tested in three areas in Southern Brazil. We captured 375 individuals of 30 species belonging to four genera of Drosophilidae. The most abundant species were Drosophila lutzii (n=215) p=0.58, Scaptomyza sp. (n=55) p=0.15 and D. bromelioides (n=17) p=0.04, all of them, anthophilous species. All colored pan traps captured a high quantify species of Drosophilidae, mainly anthophilous species.
{"title":"First report of colored pan traps to capture Drosophilidae (Diptera)","authors":"M. F. Mendes, M. S. Gottschalk, R. Halinski, Henrique R. Moreira, Camila Dalmorra, V. L. S. Valente-Gaiesky","doi":"10.1590/1806-9665-rbent-2021-0057","DOIUrl":"https://doi.org/10.1590/1806-9665-rbent-2021-0057","url":null,"abstract":"ABSTRACT The use of robust sample methodologies to estimate the highest number of species with different ecological requirements and traits is essential to the knowledge construction of the biodiversity and to establish wildlife assessment and monitoring programs. Our aims were to study the performance of colored pan traps in the capture of Drosophilidae (Diptera), a method never used for sampling this taxon. During six months, colored pan traps (blue, yellow and white) were tested in three areas in Southern Brazil. We captured 375 individuals of 30 species belonging to four genera of Drosophilidae. The most abundant species were Drosophila lutzii (n=215) p=0.58, Scaptomyza sp. (n=55) p=0.15 and D. bromelioides (n=17) p=0.04, all of them, anthophilous species. All colored pan traps captured a high quantify species of Drosophilidae, mainly anthophilous species.","PeriodicalId":49622,"journal":{"name":"Revista Brasileira de Entomologia","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45919056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-17DOI: 10.1590/1806-9665-rbent-2021-0037
Nathan Rodrigues Batista, Vinicius Edson Soares de Oliveira, W. Antonialli-Júnior
ABSTRACT For eusocial insects, the nest is a place where the main social interactions occur. The nest architecture ensures protection from predators and the environment, as well as suitable conditions for brood rearing, food storage, and in some cases the cultivation of fungus farms. Variations in nest architecture can occur, according to the environmental conditions. In order to elucidate the internal organization of nests, most studies use 2D schemes and photographs to illustrate the nest architecture models. However, 3D models can provide a different and more realistic view of the nest architecture. The aim of this study was to describe the nest architecture and colony size of the grass-cutting ant Acromyrmex balzani (Emery), using 3D models to illustrate these features. The structures of eight colonies were measured and the data were used to create a 3D model of each nest. Externally, the nests had one or more piles of loose soil and waste, with a single straw turret over the entrance. Underground, the nests had from 2 to 6 chambers, at a maximum depth of 122 cm. It could be concluded that the observed nest architecture of Acromyrmex balzani followed, at least in part, the pattern already reported in the literature. However, this is the first report of connection between two chambers made by two shafts, as well as the presence of the turret at the nest entrance/exit, regardless of the season of the year. These differences evidence that the nest structures may vary, depending on intrinsic or local environmental conditions.
{"title":"A 3D model to illustrate the nest architecture of Acromyrmex balzani (Hymenoptera; Formicidae)","authors":"Nathan Rodrigues Batista, Vinicius Edson Soares de Oliveira, W. Antonialli-Júnior","doi":"10.1590/1806-9665-rbent-2021-0037","DOIUrl":"https://doi.org/10.1590/1806-9665-rbent-2021-0037","url":null,"abstract":"ABSTRACT For eusocial insects, the nest is a place where the main social interactions occur. The nest architecture ensures protection from predators and the environment, as well as suitable conditions for brood rearing, food storage, and in some cases the cultivation of fungus farms. Variations in nest architecture can occur, according to the environmental conditions. In order to elucidate the internal organization of nests, most studies use 2D schemes and photographs to illustrate the nest architecture models. However, 3D models can provide a different and more realistic view of the nest architecture. The aim of this study was to describe the nest architecture and colony size of the grass-cutting ant Acromyrmex balzani (Emery), using 3D models to illustrate these features. The structures of eight colonies were measured and the data were used to create a 3D model of each nest. Externally, the nests had one or more piles of loose soil and waste, with a single straw turret over the entrance. Underground, the nests had from 2 to 6 chambers, at a maximum depth of 122 cm. It could be concluded that the observed nest architecture of Acromyrmex balzani followed, at least in part, the pattern already reported in the literature. However, this is the first report of connection between two chambers made by two shafts, as well as the presence of the turret at the nest entrance/exit, regardless of the season of the year. These differences evidence that the nest structures may vary, depending on intrinsic or local environmental conditions.","PeriodicalId":49622,"journal":{"name":"Revista Brasileira de Entomologia","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45639388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-09DOI: 10.1590/1806-9665-rbent-2020-0119
C. P. Moraes, L. A. Foerster
ABSTRACT The small tomato fruit borer Neoleucinodes elegantalis is a pest of wild and cultivated solanaceous of economic importance, such as tomatoes, eggplant, peppers and scarlet eggplant. We compared the development, survival and reproduction of N. elegantalis in cultivated and wild Solanaceae as alternative hosts in the absence of tomato plants in the field. The development time was significantly affected by the host plant and was longer in larvae feeding on eggplant. Survival of the immature stages was higher in larvae fed on tomato and eggplant, although the development cycle was completed in all hosts. Fecundity was also influenced by the host plant and was lower when the larvae fed on scarlet eggplant and the wild solanaceae Solanum paniculatum (jurubeba). The net reproductive rate was lower in jurubeba and the intrinsic growth rate was higher in Solanum sp. The results show that both wild Solanum species can act as alternative hosts for N. elegantalis during the intercropping of tomato in winter and autumn and may thus act as larval reservoirs for infestations on cultivated species. The large number of hosts able to sustain the development of N. elegantalis is another factor, together with world’s climate changes, to increase the invasive potential of N. elegantalis into tomato-producing countries.
{"title":"Development and survival of Neoleucinodes elegantalis (Lepidoptera: Crambidae) on wild and cultivated solanaceae","authors":"C. P. Moraes, L. A. Foerster","doi":"10.1590/1806-9665-rbent-2020-0119","DOIUrl":"https://doi.org/10.1590/1806-9665-rbent-2020-0119","url":null,"abstract":"ABSTRACT The small tomato fruit borer Neoleucinodes elegantalis is a pest of wild and cultivated solanaceous of economic importance, such as tomatoes, eggplant, peppers and scarlet eggplant. We compared the development, survival and reproduction of N. elegantalis in cultivated and wild Solanaceae as alternative hosts in the absence of tomato plants in the field. The development time was significantly affected by the host plant and was longer in larvae feeding on eggplant. Survival of the immature stages was higher in larvae fed on tomato and eggplant, although the development cycle was completed in all hosts. Fecundity was also influenced by the host plant and was lower when the larvae fed on scarlet eggplant and the wild solanaceae Solanum paniculatum (jurubeba). The net reproductive rate was lower in jurubeba and the intrinsic growth rate was higher in Solanum sp. The results show that both wild Solanum species can act as alternative hosts for N. elegantalis during the intercropping of tomato in winter and autumn and may thus act as larval reservoirs for infestations on cultivated species. The large number of hosts able to sustain the development of N. elegantalis is another factor, together with world’s climate changes, to increase the invasive potential of N. elegantalis into tomato-producing countries.","PeriodicalId":49622,"journal":{"name":"Revista Brasileira de Entomologia","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41571357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-30DOI: 10.1590/1806-9665-rbent-2020-0100
Everton E. Nazaré-Silva, F. Silva
ABSTRACT This paper provides a revision of the three smallest subgenera of Deltochilum, all endemic to the Atlantic Forest of South America. Deltochilum (Euhyboma) and D. (Rubrohyboma) are monospecific taxa, composed of D. brasiliense (Castelnau, 1840) and D. rubripenne (Gory, 1831), respectively, whereas D. (Parahyboma) is composed of two allopatric species, D. furcatum (Castelnau, 1840) and D. granulosum Paulian, 1933. Lectotypes for D. brasiliense and D. rubripenne are designated. Each species is analyzed as follows: a detailed literature review, a diagnosis, description, illustrations of key morphological characters, list of material examined, and geographic distribution. An improved identification key to the subgenera of Deltochilum is presented.
{"title":"A revision of the subgenera Euhyboma Kolbe, 1893, Parahyboma Paulian, 1938, and Rubrohyboma Paulian, 1939 of Deltochilum Eschscholtz, 1822 (Coleoptera: Scarabaeidae: Scarabaeinae)","authors":"Everton E. Nazaré-Silva, F. Silva","doi":"10.1590/1806-9665-rbent-2020-0100","DOIUrl":"https://doi.org/10.1590/1806-9665-rbent-2020-0100","url":null,"abstract":"ABSTRACT This paper provides a revision of the three smallest subgenera of Deltochilum, all endemic to the Atlantic Forest of South America. Deltochilum (Euhyboma) and D. (Rubrohyboma) are monospecific taxa, composed of D. brasiliense (Castelnau, 1840) and D. rubripenne (Gory, 1831), respectively, whereas D. (Parahyboma) is composed of two allopatric species, D. furcatum (Castelnau, 1840) and D. granulosum Paulian, 1933. Lectotypes for D. brasiliense and D. rubripenne are designated. Each species is analyzed as follows: a detailed literature review, a diagnosis, description, illustrations of key morphological characters, list of material examined, and geographic distribution. An improved identification key to the subgenera of Deltochilum is presented.","PeriodicalId":49622,"journal":{"name":"Revista Brasileira de Entomologia","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42462073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-23DOI: 10.1590/1806-9665-rbent-2021-0025
C. Oliveira, C. M. Oliveira, A. Specht, M. R. Frizzas
ABSTRACT Coleoptera order in Brazil presents 105 families with approximately 28,000 species. The life cycle and diversity of Coleoptera are strongly influenced by climate and vegetation. The objective of this study was to evaluate the seasonality and distribution of Coleoptera families in an area of the Cerrado in the Federal District (DF) of Brazil. The insects were collected monthly, between June 2015 and May 2016, using a light trap activated only in nights with a new moon, in an area of cerrado sensu stricto in Planaltina/DF, Brazil. The data were correlated with climatic variables. A total of 21,100 Coleoptera specimens belonging to 34 families were collected, with Melolonthidae (n = 11,075), Carabidae (n = 2,522), Scarabaeidae (n = 2,506), Bostrichidae (n = 1,196), and Chrysomelidae (n = 1,086) being the most abundant. Coleoptera were significantly more abundant in the first half of the rainy season. There was a significant and positive correlation between the abundance of Coleoptera and the climatic variables temperature and precipitation. The data presented in this study are related to an atypical year under the strong influence of the El Nino phenomenon, which may influence the abundance of Coleoptera. Circular analysis revealed that Coleoptera, and the most abundant families, presented seasonality throughout the year with a grouped distribution at the beginning of the rainy season (October to December). This study demonstrates that the richness and abundance of the Coleoptera order, in the Cerrado, is strongly influenced by the characteristic climatic seasons of the biome.
{"title":"Seasonality and distribution of Coleoptera families (Arthropoda, Insecta) in the Cerrado of Central Brazil","authors":"C. Oliveira, C. M. Oliveira, A. Specht, M. R. Frizzas","doi":"10.1590/1806-9665-rbent-2021-0025","DOIUrl":"https://doi.org/10.1590/1806-9665-rbent-2021-0025","url":null,"abstract":"ABSTRACT Coleoptera order in Brazil presents 105 families with approximately 28,000 species. The life cycle and diversity of Coleoptera are strongly influenced by climate and vegetation. The objective of this study was to evaluate the seasonality and distribution of Coleoptera families in an area of the Cerrado in the Federal District (DF) of Brazil. The insects were collected monthly, between June 2015 and May 2016, using a light trap activated only in nights with a new moon, in an area of cerrado sensu stricto in Planaltina/DF, Brazil. The data were correlated with climatic variables. A total of 21,100 Coleoptera specimens belonging to 34 families were collected, with Melolonthidae (n = 11,075), Carabidae (n = 2,522), Scarabaeidae (n = 2,506), Bostrichidae (n = 1,196), and Chrysomelidae (n = 1,086) being the most abundant. Coleoptera were significantly more abundant in the first half of the rainy season. There was a significant and positive correlation between the abundance of Coleoptera and the climatic variables temperature and precipitation. The data presented in this study are related to an atypical year under the strong influence of the El Nino phenomenon, which may influence the abundance of Coleoptera. Circular analysis revealed that Coleoptera, and the most abundant families, presented seasonality throughout the year with a grouped distribution at the beginning of the rainy season (October to December). This study demonstrates that the richness and abundance of the Coleoptera order, in the Cerrado, is strongly influenced by the characteristic climatic seasons of the biome.","PeriodicalId":49622,"journal":{"name":"Revista Brasileira de Entomologia","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43575445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-16DOI: 10.1590/1806-9665-rbent-2021-0029
R. A. D. Silva, P. Degrande, Matheus Dalla Cort Pereira, Ellen Patrícia de Souza
ABSTRACT Cotton is an alternative host for Edessa meditabunda (Hemiptera: Pentatomidae), especially after the soybean harvest in surrounding areas, when large numbers of insects invade cotton fields and damage reproductive structures such as flowers and developing bolls. However, no studies on its occurrence and spatial distribution have been conducted in cotton. Therefore, this study was aimed to assess the temporal variation and spatial distribution of E. meditabunda in the alternative host plant, Gossypium hirsutum. The study was carried out in an area of 1.1 ha planted with cotton that was divided in 64 plots of 169 m2 each, where entire cotton plants were examined weekly and E. meditabunda nymphs and adults were counted. Dispersion rates and theoretical frequency distributions were calculated and analyzed with significance level at 5%. Assessments were carried out from seedling emergence until the appearance of bolls, but E. meditabunda was present only during the reproductive stage of cotton plants. This study detected the dispersal of this stink bug from late-cycle soybean fields to cotton, indicating cotton’s potential as an alternative host plant, providing shelter and food. Based on aggregation indices, the spatial distribution of nymphs and adults in cotton was aggregated at the beginning of the infestation, but tended toward randomness as bolls reached maturity. The occurrence of E. meditabunda in cotton was best described by the Poisson distribution with significance level at 5%.
{"title":"Temporal variation and spatial distribution of the pest insect Edessa meditabunda in cotton (Gossypium hirsutum) as an alternative host plant","authors":"R. A. D. Silva, P. Degrande, Matheus Dalla Cort Pereira, Ellen Patrícia de Souza","doi":"10.1590/1806-9665-rbent-2021-0029","DOIUrl":"https://doi.org/10.1590/1806-9665-rbent-2021-0029","url":null,"abstract":"ABSTRACT Cotton is an alternative host for Edessa meditabunda (Hemiptera: Pentatomidae), especially after the soybean harvest in surrounding areas, when large numbers of insects invade cotton fields and damage reproductive structures such as flowers and developing bolls. However, no studies on its occurrence and spatial distribution have been conducted in cotton. Therefore, this study was aimed to assess the temporal variation and spatial distribution of E. meditabunda in the alternative host plant, Gossypium hirsutum. The study was carried out in an area of 1.1 ha planted with cotton that was divided in 64 plots of 169 m2 each, where entire cotton plants were examined weekly and E. meditabunda nymphs and adults were counted. Dispersion rates and theoretical frequency distributions were calculated and analyzed with significance level at 5%. Assessments were carried out from seedling emergence until the appearance of bolls, but E. meditabunda was present only during the reproductive stage of cotton plants. This study detected the dispersal of this stink bug from late-cycle soybean fields to cotton, indicating cotton’s potential as an alternative host plant, providing shelter and food. Based on aggregation indices, the spatial distribution of nymphs and adults in cotton was aggregated at the beginning of the infestation, but tended toward randomness as bolls reached maturity. The occurrence of E. meditabunda in cotton was best described by the Poisson distribution with significance level at 5%.","PeriodicalId":49622,"journal":{"name":"Revista Brasileira de Entomologia","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46786019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-30DOI: 10.1590/1806-9665-rbent-2021-0040
H. Vargas
Abstract The integration of field work with DNA barcoding is useful to disentangle lepidopteran interactions in nature. Adults of the little-known geometrid moth Cosmophyga cortesi Vargas, 2008 (Lepidoptera: Geometridae) were reared from folivorous larvae collected on the native tree Schinus areira L. (Anacardiaceae) at about 260 and 1500 m elevation in the transverse valleys of the Atacama Desert of northern Chile. Similarity of two DNA barcodes of C. cortesi was 99.7 and 100% with one sequence of an unidentified geometrid larva previously collected in a cell of the potter wasp Hypodynerus andeus (Packard, 1869) (Hymenoptera: Vespidae). This finding represents the first host plant record for C. cortesi, expands its previously documented altitudinal range by more than 1200 m and confirms that its larvae are captured by females of a potter wasp.
{"title":"On the natural history of Cosmophyga cortesi Vargas (Lepidoptera: Geometridae), a little-known geometrid moth of the Atacama Desert","authors":"H. Vargas","doi":"10.1590/1806-9665-rbent-2021-0040","DOIUrl":"https://doi.org/10.1590/1806-9665-rbent-2021-0040","url":null,"abstract":"Abstract The integration of field work with DNA barcoding is useful to disentangle lepidopteran interactions in nature. Adults of the little-known geometrid moth Cosmophyga cortesi Vargas, 2008 (Lepidoptera: Geometridae) were reared from folivorous larvae collected on the native tree Schinus areira L. (Anacardiaceae) at about 260 and 1500 m elevation in the transverse valleys of the Atacama Desert of northern Chile. Similarity of two DNA barcodes of C. cortesi was 99.7 and 100% with one sequence of an unidentified geometrid larva previously collected in a cell of the potter wasp Hypodynerus andeus (Packard, 1869) (Hymenoptera: Vespidae). This finding represents the first host plant record for C. cortesi, expands its previously documented altitudinal range by more than 1200 m and confirms that its larvae are captured by females of a potter wasp.","PeriodicalId":49622,"journal":{"name":"Revista Brasileira de Entomologia","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49539065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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