Neotropical Entomology (NEOTROP ENTOMOL)

Publisher: Sociedade Entomológica do Brasil

Journal description

Publication of the Sociedade Entomológica do Brasil. Mission is to publish results of original research on the several specialties of entomology, like: bionomics, systematics, morphology, physiology, behavior, ecology, biological control, crop protection and on acarology. Extensive reviews or articles concerning current issues in entomology presented in a thought-provoking form are published in the Forum Section, by invitation. Former Title: Anais Da Sociedade Entomologica Do Brasil.

Current impact factor: 0.85

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 0.85
2012 Impact Factor 0.675
2011 Impact Factor 0.603
2010 Impact Factor 0.646
2009 Impact Factor 0.586
2008 Impact Factor 0.46
2007 Impact Factor 0.546
2006 Impact Factor 0.413

Impact factor over time

Impact factor
Year

Additional details

5-year impact 0.84
Cited half-life 6.30
Immediacy index 0.04
Eigenfactor 0.00
Article influence 0.27
Website Neotropical Entomology website
ISSN 1519-566X
OCLC 60622301
Material type Document, Periodical, Internet resource
Document type Internet Resource, Computer File, Journal / Magazine / Newspaper

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: We undertook a panbiogeographic analysis of 23 species of the Epicauta maculata group of America—Epicauta abeona Pinto, Epicauta adspersa (Klug), Epicauta andersoni Werner, Epicauta atomaria (Germar), Epicauta apache Pinto, Epicauta cavernosa (Courbon), Epicauta dilatipennis Pic, Epicauta fulvicornis (Burmeister), Epicauta horni Champion, Epicauta jeffersi Pinto, Epicauta koheleri Denier, Epicauta lizeri Denier, E. maculata (Say), Epicauta magnomaculata Martin, Epicauta minutepunctata Borchmann, Epicauta nigropunctata (Blanchard), Epicauta normalis Werner, Epicauta ocellata (Dugès), Epicauta pardalis LeConte, picauta phoenix Werner, Epicauta pluvialis Borchmann, Epicauta proscripta Werner, Epicauta rubella Denier, and Epicauta ventralis Werner—with the purpose of analyzing the distributional data for taxa, to establish patterns of distribution of an ancestral biota and areas where these groups have interacted. Based on the overlap of 20 individual tracks, four generalized tracks constituted by different numbers of species were identified; two of them are located in the Nearctic region and the Mexican transition zone (tracks “A” and “B”), and the other two are distributed in the Neotropical region and the South America transition zone (“C”, “D”). Six nodes were recognized: Two of them are included in the Nearctic Region, node ‘I’ located in northern USA and node ‘II’ located in southwestern USA, both at the intersection of the tracks “A” and “B”. The other four are included in the Neotropical Region at the intersection of the tracks “C” and “D”: Node ‘III’ is located in Chaco province; node ‘IV’ is located in Parana Forest province; node ‘V’ is located in the northwest of Argentina in Puna province, and node ‘VI’ is located in Monte province.
    Neotropical Entomology 08/2015; 44(4). DOI:10.1007/s13744-015-0287-4
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    ABSTRACT: In tropical freshwaters, different species of water bugs (Heteroptera) constitute a guild sharing similar prey resources including chironomid and mosquito larvae. Assuming possibilities of intraguild predation (IGP) among the constituent members, an attempt was made to evaluate the effects of prey and predator density on the mortality of mosquito and chironomid larvae (shared prey), using Laccotrephes griseus Guérin-Méneville (Hemiptera: Nepidae) and Ranatra filiformis Fabricius (Hemiptera: Nepidae) as IG predators and Anisops bouvieri Kirkaldy (Hemiptera: Notonectidae) as IG prey. The predation on mosquito and chironomid larvae varied with the density and combinations of the predators. When present as conspecific IG predators, L. griseus exhibited greater effect on the prey mortality than R. filiformis. The effects on shared prey suggest that the two predators are not substitutable in terms of the effect on the shared prey mortality. The mortality of A. bouvieri (IG prey) at low shared prey density was significantly different (p < 0.05) from high shared prey density. In view of predatory effect of the heteropteran predators on the dipteran larvae, the results suggest possible interference by the presence of A. bouvieri as an intermediate predator. It seems that the presence of heteropteran predators including A. bouvieri as IG prey may benefit the dipteran prey under situations when the density is low in tropical waters. The intensity of the predatory effect may differ based on the species composition at IG predator level. For mosquito biological control, the interactions between the predators may not be substitutable and are independent in their effects.
    Neotropical Entomology 08/2015; 44(4). DOI:10.1007/s13744-015-0286-5
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    ABSTRACT: The oriental fruit moth, Grapholita molesta (Busck), is the most serious pest in peach, and several insecticide applications are required to reduce crop damage to acceptable levels. Geostatistics and Geographic Information Systems (GIS) are employed to measure the range of spatial correlation of G. molesta in order to define the optimum sampling distance for performing spatial analysis and to determine the current distribution of the pest in peach orchards of southern Uruguay. From 2007 to 2010, 135 pheromone traps per season were installed and georeferenced in peach orchards distributed over 50,000 ha. Male adult captures were recorded weekly from September to April. Structural analysis of the captures was performed, yielding 14 semivariograms for the accumulated captures analyzed by generation and growing season. Two sets of maps were constructed to describe the pest distribution. Nine significant models were obtained in the 14 evaluated periods. The range estimated for the correlation was from 908 to 6884 m. Three hot spots of high population level and some areas with comparatively low populations were constant over the 3-year period, while there is a greater variation in the size of the population in different generations and years in other areas.
    Neotropical Entomology 08/2015; 44(4). DOI:10.1007/s13744-015-0288-3
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    ABSTRACT: Macaria mirthae Vargas et al (Lepidoptera: Geometridae) is a geometrid moth native to the northern Atacama Desert of Chile. Its oligophagous larvae are associated with native hosts of the plant family Fabaceae, the most important of which is Acacia macracantha. The invasive tree Leucaena leucocephala (Fabaceae) was recently recorded as a host plant for M. mirthae based on morphology. The taxonomic status of larvae collected on A. macracantha and L. leucocephala was assessed using sequences of the DNA barcode fragment of the cytochrome c oxidase subunit I (COI) gene. Genetic divergence between samples from the host plants was found to be 0%-0.8% (Kimura 2-parameter model). Neighbor-joining and maximum likelihood analyses were also performed, including additional barcode sequences of Neotropical geometrid moths from GenBank and BOLD databases. Sequences of the larvae from both host plants clustered in a single clade with high statistical support in both analyses. Based on these results, it is concluded that M. mirthae has effectively expanded its host range and its larvae are currently feeding on the exotic tree L. leucocephala. Additionally, the importance of this new host association in a highly disturbed habitat is briefly discussed in terms of the field biology of this native geometrid moth.
    Neotropical Entomology 08/2015; 44(4). DOI:10.1007/s13744-015-0289-2
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    ABSTRACT: In the present study, two experiments were designed to investigate the lethal and sublethal effects of methoxyfenozide on Spodoptera litura (F.). The first experiment was conducted to explore the fitness cost of methoxyfenozide resistance in a methoxyfenozide-resistant strain (selected with methoxyfenozide for 13 consecutive generations), leading to resistance ratio to methoxyfenozide 83.0- and 2359-fold higher when compared to the field and susceptible populations with a fitness cost of 0.17. In the second experiment, second instars of the susceptible strain were treated with sublethal doses of methoxyfenozide (LC30, LC20, and LC10) by diet incorporation for larval feeding for 3 days. It was observed that higher concentrations of methoxyfenozide significantly prolonged the larval and pupal development time of S. litura as compared to the control treatment. The number of eggs per female, egg hatching, sex ratio, and longevity of adults of methoxyfenozide-treated groups was greatly reduced as compared to untreated S. litura. Our data clearly indicated that fitness cost of methoxyfenozide and its sublethal effects on S. litura has an important impact on its population dynamics.
    Neotropical Entomology 06/2015; DOI:10.1007/s13744-015-0306-5
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    ABSTRACT: The spatial distribution and temporal variation of 11 species of Tropisternus were analyzed in two permanent ponds located in the province of Corrientes, Argentina. Samples were collected every 15 days, between October 2010 and March 2011. The species recorded were Tropisternus collaris (Fabricius), Tropisternus ovalis Castelnau, Tropisternus laevis (Sturm), Tropisternus lateralis limbatus (Brullé), Tropisternus longispina Fernández & Bachmann, Tropisternus carinispina Orchymont, Tropisternus bourmeisteri Fernández & Bachmann, Tropisternus apicipalpis (Chevrolat), Tropisternus dilatatus Bruch, Tropisternus obesus Bruch, and Tropisternus ignoratus Knisch. The first four were present in higher proportions than the remaining during most of the study period. The spatial distribution of individuals was mostly related to the homogeneity or heterogeneity of the ecosystem in relation to microhabitats with aquatic vegetation: In ponds with different microhabitats, individuals were mainly aggregated, whereas in ponds with homogenous features, individuals were randomly distributed. However, when species were analyzed individually, the spatial distribution and the use of microhabitat by each species were different with respect to preference and behavior.
    Neotropical Entomology 06/2015; 44(3). DOI:10.1007/s13744-015-0281-x
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    ABSTRACT: Ichneumonidae (Hymenoptera) is one of the largest families of Insecta, but information on family diversity and distribution in Brazil is limited. The aim of the study was to assess the abundance, richness and seasonal distribution of Ichneumonidae in an urban secondary semideciduous montane forest. Insect specimens were captured in a Malaise trap placed within a restored sub-evergreen forest and sampling was performed every week during three non-consecutive 12-month periods. Of the 507 specimens collected, 338 were captured between May 1991 and May 1992, 95 between May 2000 and May 2001, and 74 between May 2007 and May 2008. Specimens were distributed among the subfamilies Pimplinae (n = 444), Anomaloninae (n = 42), Metopiinae (n = 16), Poemeniinae (n = 3) and Rhyssinae (n = 2). Species richness was highest in 1991-1992 with 33 rare and eight common species captured, followed by 2000-2001 with 31 rare and one common species captured, and 2007-2008 with 24 rare and one common species captured. The Shannon-Wiener diversity index (H') and Jackknife 1 species richness (S) values for the respective periods were 2.75/59.6, 3.15/35.8 and 2.83/35.8. In the 1991-1992 and 2000-2001 periods, parasitoid abundance was higher during the rainy season, while in 2007-2008 abundance was higher during the dry season. Colpotrochia mexicana (Cresson), Colpotrochia neblina Gauld & Sithole and Exochus izbus Gauld & Sithole were recorded for the first time in Brazil.
    Neotropical Entomology 06/2015; 44(3). DOI:10.1007/s13744-015-0275-8
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    ABSTRACT: In landscape mosaics, species may use different vegetation types or be restricted to a single vegetation type or land-use feature highlighting the importance of the interaction of species requirements and environmental heterogeneity. In these systems, the determination of the overall pattern of β-diversity can indicate the importance of the environmental heterogeneity on diversity patterns. Here, we evaluate leaf beetles (Coleoptera: Chrysomelidae) as habitat quality bioindicators in a system with varying intensities of human impacts and different phyto-physiognomies (from open field to forests). We collected 1117 leaf beetles belonging to 245 species, of which 12 species and 5 genus were considered possible bioindicators based on IndVal measures. Higher species richness was observed in forests and regenerating fields, and habitats with lower species richness included pastures, mines, and veredas. Natural fields, regenerating fields, natural cerrado, and forest had higher values of β-diversity. Bioindicator systems that include not only species richness and abundance but also assemblage composition are needed to allow for a better understanding of Chrysomelidae response to environmental disturbance.
    Neotropical Entomology 06/2015; 44(3). DOI:10.1007/s13744-015-0280-y
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    ABSTRACT: Increasing plant diversity within crops can be beneficial for pest control. In this field study, the effects of two wheat and pea associations (mixed cropping and strip cropping) on aphid populations were compared with pure stands of both crops by observations on tillers and plants. Pea was more susceptible to infestations than wheat. As expected, the density of aphid colonies was significantly higher in pure stands during the main occurrence periods, compared with associations. Additionally, flying beneficials, such as not only aphidophagous adult ladybirds but also parasitoid, hoverfly and lacewing species that feed on aphids at the larval stage, were monitored using yellow pan traps. At specific times of the sampling season, ladybirds and hoverflies were significantly more abundant in the pure stand of pea and wheat, respectively, compared with associations. Few parasitoids and lacewings were trapped. This study showed that increasing plant diversity within crops by associating cultivated species can reduce aphid infestations, since host plants are more difficult to locate. However, additional methods are needed to attract more efficiently adult beneficials into wheat and pea associations.
    Neotropical Entomology 06/2015; 44(3). DOI:10.1007/s13744-015-0282-9
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    ABSTRACT: The determinants of diversity are a central issue in ecology, particularly in Andean forests that are known to be a major diversity hotspot for several taxa. We examined the effect of abiotic (elevation and precipitation) and biotic (flowering plant diversity) factors considered to be decisive causal factors of diversity patterns on anthophyllous insect communities on mountain forest. Sampling was carried out in 100-m transects at eight elevational levels and during a period of 8 months. All flowering plants in the understory and their flowering visitors were recorded. Species richness and diversity were estimated for each elevation and month. Diversity of flowering plants, elevation, and precipitation were used as independent variables in multiple regressions against insect diversity. The evaluated abiotic and biotic factors had contrasting effects on insect diversity: a significant decrease on insect diversity occurred at high elevation and dry months (i.e., threshold effect), while it showed a positive relationship with flowering plant diversity through time (i.e., linear effect), but not along elevation. Rapid turnover of species of both interacting guilds was observed every 100-m altitude and month. Local insect communities were also divided functionally depending on the plant family they visit. These results indicate that each insect community is distinctive among elevations and months and that diversity of flowering plants, precipitation, and elevation influence their structure and composition. Thus, conservation strategies should involve protection of forest cover at the whole elevation gradient, in order to preserve common and exclusive components of diversity and consequently, the mosaic of plant-pollinator interactions.
    Neotropical Entomology 06/2015; 44(3). DOI:10.1007/s13744-014-0265-2
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    ABSTRACT: The small tomato borer Neoleucinodes elegantalis (Guenée) (Lepidoptera: Crambidae) is one of the major pests of solanaceous in Central and South America. Little is known about the role of temperature on the biological traits of this species. Development time of the immature stages and longevity and reproduction of adults of N. elegantalis at constant temperatures (15, 20, 25, 27, and 30 ± 1°C) were determined when larvae were fed on fruits of the tomato hybrid “Paronset.” Neoleucinodes elegantalis completed its life cycle at temperatures between 15°C and 27°C, indicating that it can remain active throughout the year in the subtropical region of Brazil. The temperature threshold (T t) was 8.8°C for the egg stage and 7.7°C for the larval and pupal stages. The small tomato borer required 588.2 degrees-day for its full development. At 30°C, the eggs were infertile, indicating that temperatures above 27°C are deleterious to the fertilization/embryonic development of the studied population of N. elegantalis. The number of generations of N. elegantalis per year in the Brazilian subtropical region is lower than for populations developing in warmer tropical areas. A relationship was found between the number of generations and the increase in latitude.
    Neotropical Entomology 05/2015; 44(4). DOI:10.1007/s13744-015-0293-6