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Neotropical Entomology

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https://www.readbyqxmd.com/read/29032439/the-application-of-chironomid-pupal-exuvial-technique-cpet-for-ecological-analysis-in-a-neotropical-large-river-system
#1
A P Mestre, A C Paggi, L Montalto
This field ecological study, based on the chironomid pupal exuvial technique (CPET), is new for the Paraná River and proposes an efficient tool to be used in future ecological approaches and biomonitoring. Drifting of pupal exuviae in a river-floodplain system of the Middle Paraná River floodplain was represented by 34 Chironomidae taxa, being the characteristic association obtained from the CPET: Lopescladius, Onconeura, Paralauterborniella, Polypedilum, and Harnischia complex. Diversity, richness, dominance, total density, and density of dominant taxa were different between the longitudinal and lateral dimensions but not between hydrologic phases, with a greater diversity and richness in the main channel of the river and higher density and dominance in floodplain habitats...
October 14, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/29022252/biological-data-on-anovia-punica-gordon-coleoptera-coccinellidae-a-predator-of-crypticerya-multicicatrices-kondo-unruh-hemiptera-monophlebidae
#2
E C Pinchao, P Sotelo, G González, T Kondo
The coccinellid beetle Anovia punica Gordon (Coleoptera: Coccinellidae: Noviini) is an important predator of the Colombian fluted scale, Crypticerya multicicatrices Kondo & Unruh (Hemiptera: Monophlebidae). In order to gather information on the biological traits of A. punica, we conducted a series of studies, including of the developmental time of each life history stage, estimation of life table parameters, and predation rates under laboratory conditions [25.1 ± 1.6°C, with 70.5 ± 7.3% RH, and natural light regime, approx...
October 12, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28971353/uncovered-diversity-of-a-predominantly-andean-butterfly-clade-in-the-brazilian-atlantic-forest-a-revision-of-the-genus-praepedaliodes-forster-lepidoptera-nymphalidae-satyrinae-satyrini
#3
T W Pyrcz, A V L Freitas, P Boyer, F M S Dias, D R Dolibaina, E P Barbosa, L M Magaldi, O H H Mielke, M M Casagrande, J Lorenc-Brudecka
The genus Praepedaliodes Forster, 1964, the only representative of the mega-diverse mostly Andean Pedaliodes complex lineage in the Brazilian Atlantic Forest, is revised. Prior to this study, four species were known, P. phanias (Hewitson, 1862), P. granulata (Butler, 1868), P. amussis (Thieme, 1905) and P. exul (Thieme, 1905). Here, a further six are described, all from SE Brazil, expanding to 10 the number of species in this genus. Lectotypes are designated for P. phanias, P. granulata and P. amussis. The genus is most diverse in the Serra da Mantiqueira (São Paulo, Rio de Janeiro, Minas Gerais) and in the Serra Geral (Paraná, Santa Catarina) with seven species occurring in both ranges...
October 2, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28971341/the-gall-associates-of-asphondylia-poss-swaedicola-kieffer-j%C3%A3-rgensen-diptera-cecidomyiidae-on-suaeda-divaricata-moq-amaranthaceae-in-the-semiarid-argentina-and-summary-of-parasitic-hymenoptera-associated-with-suaeda-worldwide
#4
M W Gates, J Torrens, P Fidalgo, R R Kula, M L Buffington, D Adamski
We report on Asphondylia poss. swaedicola Kieffer & Jörgensen inducing apical stem galls on Suaeda divaricata Moquin-Tandon in the Monte region of Argentina. The putative inquiline gelechiid Scrobipalpula patagonica Povolný is confirmed as an associate of A. poss. swaedicola galls. The following hymenopteran parasitoids are associated with this system: Torymus nr swaedicola (Kieffer & Jörgensen), Aprostocetus sp., Horismenus sp., Bracon (Bracon) sp., Chelonus (Microchelonus) sp., Apanteles sp., Zaeucoila robusta (Ashmead), and Goniozus nigrifemur Ashmead...
October 2, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28965311/dna-barcoding-for-identification-of-sugarcane-borers-in-china
#5
J- D Wang, W- Z Wang, Z- L Lin, A Ali, H- Y Fu, M- T Huang, S- J Gao, R Wang
Sugarcane borers are economically damaging insects with species that vary in distribution patterns both geographically and temporally, and vary based on ecological niche. Currently, identification of sugarcane borers is mostly based on morphological characters. However, morphological identification requires taxonomic expertise. An alternative method to identify sugarcane borers is the use of molecular data. DNA barcoding based on partial cytochrome c oxidase subunit 1 (COI) sequences has proven to be a useful tool for rapid and accurate species determination in many insect taxa...
September 30, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28956278/effects-of-starvation-and-thermal-stress-on-the-thermal-tolerance-of-silkworm-bombyx-mori-existence-of-trade-offs-and-cross-tolerances
#6
A H Mir, A Qamar
Organisms, in nature, are often subjected to multiple stressors, both biotic and abiotic. Temperature and starvation are among the main stressors experienced by organisms in their developmental cycle and the responses to these stressors may share signaling pathways, which affects the way these responses are manifested. Temperature is a major factor governing the performance of ectothermic organisms in ecosystems worldwide and, therefore, the thermal tolerance is a central issue in the thermobiology of these organisms...
September 27, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28929439/parasitism-of-spodoptera-litura-lepidoptera-noctuidae-by-microplitis-prodeniae-hymenoptera-braconidae
#7
Z Yan, J J Yue, C H Zhang, B Q Lu, Y L Xie, L X Zhang, Z Q Peng
Spodoptera litura Fabricius is a major vegetable pest that is widely distributed throughout tropical, subtropical and temperate regions. Microplitis prodeniae Rao and Chandry is a solitary endoparasitoid of S. litura. To assess the potential use of this parasitoid as a biological control agent, the reproductive schedule, fecundity and functional response of M. prodeniae were investigated under conditions of 28 ± 1°C and 70 ± 10% relative humidity with a 14:10-h L:D photoperiod. The parasitoid's average lifetime fecundity was 171...
September 19, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28905324/the-diatraea-complex-lepidoptera-crambidae-in-colombia-s-cauca-river-valley-making-a-case-for-the-geographically-localized-approach
#8
G Vargas, L A Lastra, G D Ramírez, M A Solís
The sugarcane stem borers Diatraea saccharalis (Fabricius) and D. indigenella Dyar & Heinrich are common pests of sugarcane crops in Colombia's Cauca river valley (CRV). In 2012, however, D. tabernella Dyar was recorded for the first time in northern CRV and just 1 year later, D. busckella Dyar & Heinrich was detected, also for the first time, in central CRV. The Diatraea outbreak in the CRV was studied, its distribution and population in the region was analyzed, and levels of larval parasitism were observed...
September 13, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28905263/the-cricotopus-oliveiriella-diptera-chironomidae-of-the-high-altitude-andean-streams-with-description-of-a-new-species-c-o-rieradevallae
#9
N Prat, A Paggi, C Ribera, R Acosta, B Ríos-Touma, C Villamarín, F Rivera, P Ossa, M Rieradevall
The genus Oliveiriella (Chironomidae, Orthocladiinae) was erected by Wiedenbrug & Fittkau (1997). The adults have characteristic black spots on their wings and other characteristics similar to the genus Cricotopus. Pupal skins are very characteristic with strong short spines in the anal lobe instead of setae, while larvae are distinguishable by the long anal papillae and the intense blue color of their body. However, Andersen et al (2013) consider Oliveiriella as a subgenera of Cricotopus. In this paper, using the sequences of the cox1 gene, we conclude that Oliveiriella should be considered a subgenus within Cricotopus, confirming its status in Andersen et al (2013)...
September 13, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28905235/two-new-species-of-xenotarsonemus-acari-tarsonemidae-from-the-atlantic-forest-brazil
#10
A C Lofego, A C C Cavalcante, P R Demite
Two new species, Xenotarsonemus quiriri n. sp. and Xenotarsonemus scorpius n. sp., are described and illustrated in this paper based on specimens collected on Myrtaceae plants in Atlantic Forest areas of the states of Bahia and Santa Catarina, Brazil. A key to identification of Xenotarsonemus species reported from Brazil is provided.
September 13, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28866859/toxin-gene-contents-and-activity-of-bacillus-thuringiensis-strains-against-two-sugarcane-borer-species-diatraea-saccharalis-f-and-d-flavipennella-box
#11
L M Silva, M C Silva, S M F A Silva, R C Alves, H A A Siqueira, E J Marques
Bacillus thuringiensis (Berliner) bears essential characteristics in the control of insect pests, such as its unique mode of action, which confers specificity and selectivity. This study assessed cry gene contents from Bt strains and their entomotoxicity against Diatraea saccharalis (F.) and Diatraea flavipennella (Box) (Lepidoptera: Crambidae). Bioassays with Bt strains were performed against neonates to evaluate their lethal and sublethal activities and were further analyzed by PCR, using primers to identify toxin genes...
September 2, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28852987/drosophila-suzukii-in-southern-neotropical-region-current-status-and-future-perspectives
#12
REVIEW
F Andreazza, D Bernardi, R S S Dos Santos, F R M Garcia, E E Oliveira, M Botton, D E Nava
Non-native insect pests are often responsible for important damage to native and agricultural plant hosts. Since Drosophila suzukii Matsumura (Diptera: Drosophilidae) has become an important pest in North America and Europe (i.e., in 2008), the global production of soft thin-skinned fruits has faced severe production losses. In the southern Neotropical region, however, the first record of D. suzukii occurred in 2013 in the south of Brazil. It has also been recorded in Uruguay, Argentina, and Chile. Despite its recent occurrence in the southern Neotropical region, the fast dispersion of D...
August 30, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28840501/notes-on-the-occurrence-of-oligonychus-milleri-mcgregor-and-oligonychus-ununguis-jacobi-acari-tetranychidae-in-brazil
#13
E B Castro, O C Zanardi, J Garlet, R Ochoa, R J F Feres
We verified infestation of Oligonychus milleri (McGregor) on plantations of Pinus caribaea (Pinaceae) and of Oligonychus ununguis (Jacobi) on plantations of Eucalyptus urophylla x Eucalyptus grandis (Myrtaceae) in State of Rondônia, Northern region of Brazil. This represents the first record of O. milleri in Brazil. Oligonychus ununguis was recorded previously, on cypress. The damage caused by these two spider mites in the plantations is described herein.
August 24, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28823108/temperature-effect-on-the-development-of-tropical-dragonfly-eggs
#14
F Z Mendonça, J V Bernardy, C E K Oliveira, P B G Oliveira, P De Marco
Physiological constraints in insects are related to several large-scale processes such as species distribution and thermal adaptation. Here, we fill an important gap in ecophysiology knowledge by accessing the relationship between temperature and embrionary development time in four dragonfly species. We evaluated two questions (1) what is the effect of temperature on the development time of Odonata eggs, and (2) considering a degree-day relationship, could a simple linear model describe the dependence of embrionary development time on temperature or it is better described by a more complex non-linear relation...
August 19, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28823094/impact-of-insecticides-used-in-soybean-crops-to-the-egg-parasitoid-telenomus-podisi-hymenoptera-platygastridae
#15
C S Stecca, A F Bueno, A Pasini, D M Silva, K Andrade, D M Zirondi Filho
The objective of this study was to evaluate possible side effects of insecticides used in soybean crops on pupae and adults of the egg parasitoid Telenomus podisi Ashmead (Hymenoptera: Platygastridae) under laboratory conditions. The protocol was adapted from standard methodology stablished by the Pesticides and Beneficial Organisms Working Group of the International Organization for Biological and integrated Control (IOBC) for Trichogramma cacoeciae (Marchal) (Hymenoptera: Trichogrammatidae). All tested benzoylureas, diacylhydrazines, diamides and spinosins as well as pyrethroid beta-cyfluthrin were harmless to T...
August 19, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28822099/insecticide-toxicity-to-the-borer-neoleucinodes-elegantalis-guen%C3%A3-e-lepidoptera-crambidae-developmental-and-egg-laying-effects
#16
R S Silva, L P Arcanjo, J R S Soares, D O Ferreira, J E Serrão, J C Martins, Á H Costa, M C Picanço
Neoleucinodes elegantalis (Guenée) (Lepidoptera: Crambidae) is one of the major pests of solanaceous plants in South America. It is considered a great threat by the European and Mediterranean Plant Protection Organization due to the serious economic damage that it causes on tomato farms; therefore, controlling this pest is a challenging task in South America. Controlling N. elegantalis at the egg stage is the best way to prevent it from damaging crops; however, thorough studies about the effectiveness of chemicals on the different life stages of this insect pest are lacking...
August 18, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28804859/fertility-life-table-of-tetranychus-palmarum-flechtmann-noronha-acari-tetranychidae-in-oil-palm
#17
A C S Noronha, C T Ferreira, E J M Tavares, D B Lima
Some species of spider mites belonging to the Tetranychidae family are known to associate with oil palm (Elaeis guineensis Jacq. - Arecaceae). The occurrence of Tetranychus palmarum Flechtmann & Noronha (Acari, Tetranychidae) was verified on oil palm seedlings under greenhouse conditions in the State of Pará in Northern Brazil. Plants with colonies of T. palmarum presented yellowish spots on leaflets and leaves with chlorosis. The objective of this study was to access the biology and fertility life table of T...
August 13, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28803406/does-wolbachia-infection-change-the-overwintering-ability-of-trichogramma-brassicae-hymenoptera-trichogrammatidae
#18
S Rahimi-Kaldeh, A Ashouri, A Bandani
The overwintering ability of a biological control agent helps predict potential survival and establishment in natural conditions. Here, we compared the overwintering ability in sexual and asexual Trichogramma brassicae Bezdenko, a key natural enemy of Lepidopteran pests in Iran over two consecutive winters in central Alborz Mountains. Our aim was to investigate the effect of Wolbachia infection on the overwintering rate of T. brassicae after emergence in the subsequent year. We also wanted to know whether there is any difference in the overwintering capacity of T...
August 12, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28776180/fresh-and-dry-mass-estimates-of-hermetia-illucens-linnaeus-1758-diptera-stratiomyidae-larvae-associated-with-swine-decomposition-in-urban-area-of-central-amazonia
#19
L M Barros, R T Martins, R L Ferreira-Keppler, A L N Gutjahr
Information on biomass is substantial for calculating growth rates and may be employed in the medicolegal and economic importance of Hermetia illucens (Linnaeus, 1758). Although biomass is essential to understanding many ecological processes, it is not easily measured. Biomass may be determined by directly weighing or indirectly through regression models of fresh/dry mass versus body dimensions. In this study, we evaluated the association between morphometry and fresh/dry mass of immature H. illucens using linear, exponential, and power regression models...
August 4, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28762217/acute-toxicity-and-sublethal-effects-of-terpenoids-and-essential-oils-on-the-predator-chrysoperla-externa-neuroptera-chrysopidae
#20
R V Castilhos, A D Grützmacher, J R Coats
The search for new safer insecticides has increased in recent agriculture. Botanical compounds such as terpenoids and plant essential oils with insecticidal activity could represent important tools in pest management, and their risk assessment against non-target organisms is necessary since they may serve as a precursor for the synthesis of new insecticide active ingredients. For this study, the acute toxicity and sublethal effects of seven terpenoids and three essential oils with recognized insecticidal activity were evaluated on the predator Chrysoperla externa (Hagen) (Neuroptera: Chrysopidae) in laboratory bioassays...
July 31, 2017: Neotropical Entomology
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