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: 0.77

Impact Factor Rankings

2015 Impact Factor Available summer 2016
2014 Impact Factor 0.772
2013 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

Additional details

5-year impact 0.87
Cited half-life 7.60
Immediacy index 0.25
Eigenfactor 0.00
Article influence 0.28
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

  • Neotropical Entomology 10/2015; DOI:10.1007/s13744-015-0336-z
  • [Show abstract] [Hide abstract]
    ABSTRACT: The bean flower thrips, Megalurothrips usitatus (Bagrall) (Thysanoptera: Thripidae), is an important pest of legume crops in South China. Yellow, blue, or white sticky traps are currently recommended for monitoring and controlling thrips, but it is not known whether one is more efficient than the other or if selectivity could be optimized by trap color. We investigated the response of thrips and beneficial insects to different-colored sticky traps on cowpea, Vigna unguiculata. More thrips were caught on blue, light blue, white, and purple traps than on yellow, green, pink, gray, red, or black traps. There was a weak correlation on the number of thrips caught on yellow traps and survey from flowers (r = 0.139), whereas a strong correlation was found for blue traps and thrips' survey on flowers (r = 0.929). On commercially available sticky traps (Jiaduo®), two and five times more thrips were caught on blue traps than on white and yellow traps, respectively. Otherwise, capture of beneficial insects was 1.7 times higher on yellow than on blue traps. The major natural enemies were the predatory ladybird beetles (63%) and pirate bugs Orius spp. (29%), followed by a number of less representative predators and parasitoids (8%). We conclude the blue sticky trap was the best to monitor thrips on cowpea in South China.
    Neotropical Entomology 10/2015; DOI:10.1007/s13744-015-0334-1
  • [Show abstract] [Hide abstract]
    ABSTRACT: We characterized individual morphological types of the rose sawfly, Arge ochropus (Gmelin) (Hymenoptera: Argidae), hemocytes for the first time by means of light and differential interference contrast microscopy and scanning and transmission electron microscopy. Four types of hemocytes were identified in the hemolymph of larvae and pupae of A. ochropus: prohemocytes, plasmatocytes, granulocytes, and oenocytoids. Prohemocytes are the smallest type of hemocytes, rounded to ovoid cells with large nuclei. Plasmatocytes are polymorphic and variable in size. Granulocytes are oval and spherical cells variable in size, with variable number of rough endoplasmic reticulum, mitochondria, and microtubules in the cytoplasm. Oenocytoids contain eccentric nucleus and cytoplasm with small mitochondria and few rough endoplasmic reticula. Differential hemocyte counts indicated that plasmatocytes are the most abundant hemocyte type during early instars while granulocytes are the most abundant hemocyte type in the last instar. The pattern of total hemocyte count changed during rose sawfly development and reached its peak in prepupae and then declined slowly in the pupal stage.
    Neotropical Entomology 10/2015; DOI:10.1007/s13744-015-0339-9
  • [Show abstract] [Hide abstract]
    ABSTRACT: [PROVISIONAL, ACCEPTED PUBLICATION] We evaluated the directional asymmetry between right and left wings, and quantified the intraspecific and interspecific variation of the wing shape of 601 specimens of the genus Diachlorus to determine at what extent the geometrical variation discriminates six species distributed in six protected areas of Colombia. Geometric analyses were performed, integrating Procrustes methods, principal component analyses, cluster analyses, linear- and quadratic discriminant analyses, and evaluation of shape changes. In Diachlorus, left and right wings did not present significant asymmetry, but geometrical analysis allowed species identification and in some cases the origin of the specimens using the variation of wing shape; the best assigned species was Diachlorus leticia Wilkerson & Fairchild, while the worst was Diachlorus jobbinsi Fairchild, that also had the highest intraspecific variation, while Diachlorus fuscistigma Lutz had the lowest variation. Diachlorus fuscistigma and Diachlorus leucotibialis Wilkerson & Fairchild were the most similar species, while D. leucotibialis and Diachlorus nuneztovari Fairchild & Ortiz were the most alike. The specimens with the most different wing shape belonged to Chocó (especially those of D. jobbinsi), the geographically farthest area from the others in study; however, no correlation was observed between geometric and geographical distances. Linear discriminants were better than non-linear (quadratic) discriminant analyses in predicting species membership, but the opposite was true for predicting area membership. Based on our data, we hypothesized that other species of Diachlorus could also be discriminated using geometric morphometry of the wing shape.
    Neotropical Entomology 09/2015;
  • [Show abstract] [Hide abstract]
    ABSTRACT: Based on a reexamination of specimens of Crepititermes Emerson deposited in the Museu de Zoologia da Universidade de São Paulo, São Paulo, Brasil (MZUSP), we characterize the morphology and coiling in situ of the digestive tube of workers of Crepititermes verruculosus Emerson for the first time. We provide additional notes on the imago and soldier and present digital images and illustrations for all castes. We also update the currently known geographical distribution of C. verruculosus, adding some biological remarks.
    Neotropical Entomology 08/2015; 44(5):457-465.
  • [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
  • [Show abstract] [Hide abstract]
    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
  • [Show abstract] [Hide abstract]
    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
  • [Show abstract] [Hide abstract]
    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; 44(5). DOI:10.1007/s13744-015-0306-5
  • [Show abstract] [Hide abstract]
    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
  • [Show abstract] [Hide abstract]
    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
  • [Show abstract] [Hide abstract]
    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
  • [Show abstract] [Hide abstract]
    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