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Coleoptera Histeridae from French Guiana. IX. A new species of the genus Operclipygus Marseul, 1870 (Histerinae, Exosternini). A new species, Operclipygus dogueti n. sp., is described from one specimen collected by a flight interception trap in French Guiana. It belongs to the informal group of Operclipygus sulcistrius. It is distinguished from other species in the group by its dorsal striation, the surface sculpture of its pronotum, and its more elongated form., Une espèce nouvelle, Operclipygus dogueti n. sp., est décrite à partir d’un exemplaire récolté au piège d’interception de vol en Guyane française. Cette espèce appartient au groupe informel d’Operclipygus sulcistrius. Elle se distingue des autres taxons du groupe par sa striation élytrale, la sculpture de surface de son pronotum et sa forme plus allongée., Degallier Nicolas. Coleoptera Histeridae de Guyane. IX. Une nouvelle espèce du genre Operclipygus Marseul, 1870 (Histerinae, Exosternini). In: Bulletin de la Société entomologique de France, volume 123 (2),2018. pp. 193-196.

Three Hololepta (Leionota) Marseul, 1853 (Coleoptera: Histeridae) species associated as predators of the agave weevil, Scyphophorus acupunctatus Gyllenhal, 1838 (Coleoptera: Dryophthoridae), were determined after field collections in agaves crops from Guerrero, Jalisco, and Morelos, Mexico. An illustrated taxonomic key is provided for easy recognition of Hololepta polita (Marseul, 1853), H. vicina LeConte, 1851, and H. yucateca (Marseul, 1853). Hololepta vicina is recorded for the first time from the Mexican states of Jalisco, and Guerrero.

OBJECTIVE: To estimate the basic reproduction number (R0) of dengue fever including both imported and autochthonous cases. METHODS: The study was conducted based on epidemiological data of the 2003 dengue epidemic in Brasília, Brazil. The basic reproduction number is estimated from the epidemic curve, fitting linearly the increase of initial cases. Aiming at simulating an epidemic with both autochthonous and imported cases, a "susceptible-infectious-resistant" compartmental model was designed, in which the imported cases were considered as an external forcing. The ratio between R0 of imported versus autochthonous cases was used as an estimator of real R0. RESULTS: The comparison of both reproduction numbers (only autochthonous versus all cases) showed that considering all cases as autochthonous yielded a R0 above one, although the real R0 was below one. The same results were seen when the method was applied on simulated epidemics with fixed R0. This method was also compared to some previous proposed methods by other authors and showed that the latter underestimated R0 values. CONCLUSIONS: It was shown that the inclusion of both imported and autochthonous cases is crucial for the modeling of the epidemic dynamics, and thus provides critical information for decision makers in charge of prevention and control of this disease.OBJETIVO: Estimar el número de reproducción básica (R0) de la fiebre del dengue incluyendo casos importados y autóctonos. MÉTODOS: El estudio fue realizado basándose en datos epidemiológicos de la epidemia del dengue ocurrida en Brasilia, Districto Federal de Brasil, en el 2003. El número de reproducción básica es estimado de la curva epidémica, fijando el incremento lineal de los casos iniciales. Señalando casos importados y autóctonos en una simulación epidémica, fue diseñado un compartimiento "infeccioso-susceptible-resistente", en el cual los casos importados fueron considerados una fuerza externa. La tasa entre R0 de casos importados versus casos autóctonos fue usado como una estimación real de R0. RESULTADOS: La comparación de ambos números de reproducción (sólo autóctonos versus todos los casos) mostró que considerando todos los casos como autóctonos produjo un R0 por encima de uno, a pesar de que el valor real de R0 era menor que uno. Los mismos resultados fueron obtenidos cuando se aplicó el método a epidemias simuladas con valor fijo de R0. Este método fue también comparado con métodos propuestos anteriormente por otros autores y mostró los mismos valores subestimados de R0. CONCLUSIONES: Fue demostrado que la inclusión de casos importados y autóctonos es crucial para el modelaje de dinámicas epidémicas, y que provee información crítica para aquellos que participan en la toma de decisiones en la prevención y control de esta enfermedad.OBJETIVO: Estimar o número básico de reprodução da dengue (R0), com base nos casos importados, além dos casos autóctones. MÉTODOS: O estudo foi feito sobre dados epidemiológicos da epidemia de dengue em Brasília, 2003. O número básico de reprodução é determinado a partir da curva epidêmica, ajustando uma reta ao crescimento inicial do número de casos. Para simular uma epidemia com casos autóctones e importados, foi criado um modelo compartimentado do tipo "suscetíveis-infectados-resistentes". O R0 real foi estimado pela fração entre R0 dos casos autóctones e dos importados. RESULTADOS: A comparação de ambos valores de reprodução (apenas autóctones versus todos os casos) mostrou que considerando todos casos como autóctones, o valor de R0 foi superior a um, enquanto o R0 real era inferior a um. O mesmo resultado foi obtido com o conjunto de dados simulando uma epidemia com R0 fixo. O método foi também comparado a outros, observando-se que estes últimos subestimaram os valores do R0. CONCLUSÕES: A inclusão de tanto casos autóctones como os importados é essencial para modelar a dinâmica da epidemia, possibilitando informação crítica aos tomadores de decisão, responsáveis pelo controle da doença.

A new species of Omalodini, Omalodes atacamanus sp. nov., is described from Chile. A redefinition of Omalodini is proposed and an identification key to the genera is provided. The new species can be distinguished from other species of Omalodes mainly by all tibiae having a row of setae on outer submarginal region. Omalodini sensu nov. is herein restricted to a lineage of Ebonius Lewis, 1885 and Omalodes Dejean, 1833. The tribe has known distribution across Latin America with some species reaching the southern USA.

Morphological details are provided for the dorsal and ventral surfaces of both extremities and the micropylar area of eggs of Haemagogus (Haemagogus) capricornii Lutz, captured in the Biological Reserve of Tinguá, State of Rio de Janeiro, Brazil. The eggs were observed by scanning electron microscopy with a morphometrical analysis of the main structures. The outer chorionic cells on the ventral surface were extremely regular, such as those observed in Hg. equinus and Hg. janthinomys. The tubercles present differences in form, size, and distribution. Filaments to attach to the substrate were observed in this species.

OBJETIVO: Estudar o padrão de suscetibilidade do Aedes aegypti ao inseticida organofosforado temefós. MÉTODOS: Amostras de larvas de Ae. aegypti foram obtidas com armadilhas para oviposição, em oito cidades do Distrito Federal, nos anos 2000 e 2001. As larvas foram submetidas à dose diagnóstica de 0,012 mg/l de temefós, segundo metodologia padronizada pela Organização Mundial da Saúde. As populações de campo foram testadas em paralelo com a cepa de referência Rockefeller e a cepa DIVAL, do insetário da Diretoria de Vigilância Ambiental. A concentração e a pureza das soluções de temefós foram analisadas por cromatografia gasosa. Os cálculos de correlação foram determinados pelo programa StatView - SAS Institute Inc., versão 5. Utilizou-se o teste t de Student para verificar diferenças de suscetibilidade, com níveis de significância, alfa=0,05. RESULTADOS: Em 2000, as populações de larvas de Ae. aegypti nas cidades de Taguatinga, Guará e Núcleo Bandeirante apresentaram-se resistentes ao temefós, com mortalidade de larvas entre 54,1 e 63,4%. As populações do Gama, Planaltina e Sobradinho apresentaram alterações nos níveis de suscetibilidade (mortalidade de 83,6 a 92,8%). A população de Ceilândia foi a única suscetível, com 98% de mortalidade. Em 2001, todas as populações testadas mostraram-se resistentes (44,4 a 66,4% de mortalidade). Nenhuma correlação significativa foi encontrada entre a suscetibilidade das populações e a distância entre essas cidades ou a quantidade de inseticida aplicado nos anos anteriores ao estudo. CONCLUSÕES: Os níveis de suscetibilidade do Ae. aegypti ao temefós vêm se alterando no Distrito Federal. É essencial a continuidade de programas de monitoramento da resistência desse vetor aos inseticidas para se garantir a eficiência dos programas de controle e a proteção da saúde humana.OBJECTIVE: To study the susceptibility status of Aedes aegypti to the organophosphate insecticide temephos. METHODS: Samples of Ae. aegypti larvae were obtained, using ovitraps, from eight cities of the Federal District, central Brazil, in 2000 and 2001. Larvae were submitted to the diagnostic dose of 0.012 mg/l temephos, as recommended by standard World Health Organization methodology. Field populations were tested in parallel with reference strains Rockefeller and DIVAL, from the Environmental Surveillance Directory (DIVAL) insectary. The concentration and purity of temephos solutions were verified by gas chromatography. Correlation calculations were performed using StatView - SAS Institute Inc., version 5. Student's t test was used for detecting differences in susceptibility, with significance levels of alpha=0.05. RESULTS: In 2000, Ae. aegypti larvae populations from Taguatinga, Guará, and Núcleo Bandeirante showed resistance to temephos, with mortality ranging from 54.1 to 63.4%. The populations from Gama, Planaltina, and Sobradinho showed altered levels of susceptibility (mortality ranging from 83.6 to 92.8%). The population from Ceilândia was the only susceptible one, with 98% mortality. In 2001, all populations tested were resistant (44.4 to 66.4% mortality). No significant correlation was found between the susceptibility of populations and the distance between the cities of origin, or the amount of insecticide applied in the years preceding the study. CONCLUSIONS: Ae. aegypti susceptibility to temephos is changing in the Federal District. It is essential to continue monitoring the resistance of this vector to insecticides in order to ensure the efficiency of programs aimed at vector control and at the protection of human health.

Coleoptera Histeridae from French Guiana. IV. Myrmécophiles and termitophiles of the subfamily Hetaeriinae : collecting, faunistic and taxonomic notes. Practical tips are described for collecting myrmecophilous histerid beetles ; among five methods, three were much more productive : the flight interception trap, the progressive flooding of whole ants'nests and the exhaustive collecting of ants' nests ; the catalogue of Hetaeriinae from French Guiana accounts for 20 genera, at least 23 species or subspecies, of which 15 are new for this french department., Des informations spécifiques sont fournies pour la récolte des Histéridés myrmécophiles ; trois méthodes sur les cinq décrites sont les plus productives : le piège d'interception, l'immersion lente de fourmilières et la récolte de nids entiers ; de nouveaux taxa sont proposés. La Guyane française compte 20 genres et au moins 23 espèces ou sous-espèces d'Hetaeriinae dont 15 sont nouvelles pour ce département., Degallier Nicolas. Coleoptera Histeridae de Guyane française. IV. Myrmécophiles et termitophiles de la sous-famille des Hetaeriinae : notes techniques, faunistiques et taxonomiques. In: Bulletin de la Société entomologique de France, volume 109 (3), août 2004. pp. 293-316.

Revision of the genus Degallierister Gomy, 2001 (Coleoptera, Histeridae, Dendrophilinae). New distributional and morphological data and illustrations are given for the nine species already known in the neotropical genus Degallierister Gomy, 2001 : D. barberoi Gomy, 2001, D. diquis Gomy, 2013, D. hamatus (Lewis, 1888), D. hielkemai Gomy, 2013, D. penatii Gomy, 2001, D. peruvianus (Mazur, 1988), D. pseudohamatus (Kanaar, 1981), D. pusillus (Wenzel, 1944) and D. surinamensis Gomy, 2013. Ten new species are described : D. antoinei n. sp., D. bihamatus n. sp., D. greglamarrei n. sp., D. kanaari n. sp., D. lewisi n. sp., D. lissosternum n. sp., D. parenthesis n. sp., D. rogeri n. sp., D. striatus n. sp. and D. yvesi n. sp. D. peruvianus is newly recorded from Bolivia. D. barberoi is newly recorded from Costa Rica and Peru. D. penatii is newly recorded from Brazil, French Guiana, Guyana and Panama. D. diquis is newly recorded from Brazil and Panama. D. hielkemai is newly recorded from Brazil, Guyana and Peru. D. surinamensis is newly recorded from Brazil, French Guiana, Guyana and Peru. An identification key is presented for all known species., Les descriptions et la distribution sont complétées pour les neuf espèces déjà connues du genre néotropical Degallierister Gomy, 2001 : D. barberoi Gomy, 2001, D. diquis Gomy, 2013, D. hamatus (Lewis, 1888), D. hielkemai Gomy, 2013, D. penatii Gomy, 2001, D. peruvianus (Mazur, 1988), D. pseudohamatus (Kanaar, 1981), D. pusillus (Wenzel, 1944) et D. surinamensis Gomy, 2013. Dix espèces nouvelles sont décrites : D. antoinei n. sp., D. bihamatus n. sp., D. greglamarrei n. sp., D. kanaari n. sp., D. lewisi n. sp., D. lissosternum n. sp., D. parenthesis n. sp., D. rogeri n. sp., D. striatus n. sp. et D. yvesi n. sp. D. peruvianus est nouvellement cité de Bolivie. D. barberoi est nouvellement cité du Costa Rica et du Pérou. D. penatii est nouvellement cité du Brésil, du Guyana, de Guyane française et du Panama. D. diquis est nouvellement cité du Brésil et du Panama. D. hielkemai est nouvellement cité du Brésil, du Guyana et du Pérou. D. surinamensis est nouvellement cité du Brésil, du Guyana, de Guyane française et du Pérou. Une clé d’identification est fournie pour toutes les espèces du genre., Degallier Nicolas, Orousset Jean, Lemoine Michel. Révision du genre Degallierister Gomy, 2001 (Coleoptera, Histeridae, Dendrophilinae). In: Bulletin de la Société entomologique de France, volume 120 (3),2015. pp. 341-372.

To study the susceptibility status of Aedes aegypti to the organophosphate insecticide temephos.Samples of Ae. aegypti larvae were obtained, using ovitraps, from eight cities of the Federal District, central Brazil, in 2000 and 2001. Larvae were submitted to the diagnostic dose of 0.012 mg/l temephos, as recommended by standard World Health Organization methodology. Field populations were tested in parallel with reference strains Rockefeller and DIVAL, from the Environmental Surveillance Directory (DIVAL) insectary. The concentration and purity of temephos solutions were verified by gas chromatography. Correlation calculations were performed using StatView - SAS Institute Inc., version 5. Student's t test was used for detecting differences in susceptibility, with significance levels of alpha=0.05.In 2000, Ae. aegypti larvae populations from Taguatinga, Guara, and Nucleo Bandeirante showed resistance to temephos, with mortality ranging from 54.1 to 63.4%. The populations from Gama, Planaltina, and Sobradinho showed altered levels of susceptibility (mortality ranging from 83.6 to 92.8%). The population from Ceilandia was the only susceptible one, with 98% mortality. In 2001, all populations tested were resistant (44.4 to 66.4% mortality). No significant correlation was found between the susceptibility of populations and the distance between the cities of origin, or the amount of insecticide applied in the years preceding the study.Ae. aegypti susceptibility to temephos is changing in the Federal District. It is essential to continue monitoring the resistance of this vector to insecticides in order to ensure the efficiency of programs aimed at vector control and at the protection of human health.

Coleóptera Histeridae from French Guiana. III. Additions to the catalogue and systematic notes. The catalogue of Histeridae which are present in French Guiana accounts for 44 genera, at least 118 species, 24 of which are new for this french department. Twenty-three species known only from old citations, and those with special niche-dwelling habits deserve further collecting efforts., Le catalogue des Histeridae de Guyane française compte 44 genres, au moins 118 espèces dont 24 sont nouvelles pour ce département français. Vingt-trois espèces, connues que par des récoltes anciennes et d'autres ayant des modes de vie particuliers devront faire l'objet de récoltes futures., Degallier Nicolas, Kanaar Piet. Coleoptera Histeridae de Guyane française. III. Compléments au catalogue et notes systématiques. In: Bulletin de la Société entomologique de France, volume 106 (2), juin 2001. pp. 199-214.

Over 60,500 dengue cases were reported in the state of Espírito Santo (ES), Brazil, between 1995 and 1998. The study's purpose was to identify whether Aedes albopictus was transmitting the dengue virus during an epidemic in the locality of Vila Bethânia (Viana County),Vitória, ES. From April 3 to 9, 1998, blood and serum samples were collected daily for virus isolation and serological testing. Four autochthonous cases were confirmed through DEN 1 virus isolation and two autochthonous cases through MAC ELISA testing. Of 37 Ae. aegypti and 200 Ae. albopictus adult mosquitoes collected and inoculated, DEN1 virus was isolated only from a pool of two Ae. aegypti female mosquitoes. The study results suggest that Ae. albopictus still cannot be considered an inter-human vector in dengue epidemics in Brazil.Mais de 60.500 casos de dengue foram notificados no Espírito Santo, entre 1995 e 1998. Realizou-se estudo com o objetivo de averiguar se o mosquito Aedes albopictus estava transmitindo o vírus durante uma epidemia em Vila Bethânia (Viana), no sudeste de Vitória, capital capixaba. De 3 a 9 de abril de 1998, amostras de sangue e (ou) soro de pacientes foram coletadas e os mosquitos foram capturados diariamente, tanto para isolamento viral como para testes sorológicos. Em onze casos autóctonos, quatro foram confirmados por isolamento do vírus DEN 1, e dois por reação MAC ELISA Dos 37 Ae. aegypti e 200 Ae. albopictus adultos capturados e inoculados, apenas uma amostra de vírus DEN 1 foi obtida de um lote de duas fêmeas de Ae. aegypti. Os resultados sugerem que a espécie Ae. albopictus ainda não pode ser considerada um vetor inter-humano durante epidemias de dengue no Brasil.

Degallier Nicolas. Coleoptera Histeridae de Guyane française. In: Bulletin de la Société entomologique de France, volume 84 (7-8), Septembre-octobre 1979. pp. 177-184.