Scolytinae y Platypodinae (Coleoptera: Curculiondae) de Tabasco, México

Abstract

RESUMEN. El objetivo del presente estudio fue evaluar la diversidad de Scolytinae y Platypodinae en cinco localidades de Tabasco de diciembre de 2012 y abril de 2013. Se utilizaron diez trampas de intercepción de vuelo con alcohol etílico como atrayente para recolectar a los insectos en cada sitio. Se recolectaron en total 4,232 especímenes de 62 especies, de las cuales 57 pertenecen a Scolytinae y cinco a Platypodinae. La mayor diversidad de especies se obtuvo en Malpasito (MP) con un valor de H´=2.11 y la menor en Boca del cerro (BC) con un valor de H´=0.78, la mayor riqueza de especies la registró MP con 39 y la mayor abundancia Francisco Rueda (FR) con 1,500 especímenes. Los géneros Hypothenemus y Xyleborus presentaron la mayor riqueza de especies con diez y siete respectivamente. Las especies Premnobius cavipennis Eichhoff, Xyleborus volvulus (Fabricius), Sampsonius dampfi Schedl, Hypothenemus interstitialis (Hopkins) y Corthylus papulans Eichhoff registraron la mayor abundancia con 2,962 especímenes, lo que representa el 69.99% del total. Las especies Cnesinus elegans Blandford, C. gracilis Blandford, Corthylocurus barbatus (Blandford), Chramesus crenatus Wood, H. effeminatus Wood, H. inaequalis Wood, H. columbi Hopkins y M. robustum (Schedl) son nuevos registros para Tabasco. La lista de especies de estos insectos en Tabasco, México continúa creciendo conforme se incrementan los muestreos, lo que sugiere que no ha sido posible recolectar la diversidad real que albergan los ecosistemas del estado.ABSTRACT. The aim of the present study was to evaluate the diversity of Scolytinae and Platypodinae in five localities of Tabasco between December 2012 and April 2013. Ten flight intercept traps were used with ethyl alcohol as an attractant to collect insects in each site. A total of 4,232 specimens were collected from 62 species, of which 57 belong to Scolytinae and five to Platypodinae. The greatest diversity of species was obtained in Malpasito (MP) with a value of H´=2.11 and the lowest in Boca del Cerro (BC) with a value of H´=0.78, the highest species richness was recorded MP with 39 and the highest species abundance Francisco Rueda (FR) with 1,500 specimens. The genera Hypothenemus and Xyleborus presented the highest species richness with 10 and 7 respectively. The species Premnobius cavipennis Eichhoff, Xyleborus volvulus (Fabricius), Sampsonius dampfi Schedl, Hypothenemus interstitialis (Hopkins) and Corthylus papulans Eichhoff showed the highest abundance with 2,962 specimens, representing 69.99% of the total. The especies Cnesinus elegans Blandford, C. gracilis Blandford, Corthylocurus barbatus (Blandford), Chramesus crenatus Wood, H. effeminatus Wood, H. inaequalis Wood, H. columbi Hopkins and M. robustum (Schedl) are new records for Tabasco. The list of species of these insects in Tabasco, México continues to grow as new samples are taken, suggesting that it has not been possible to collect the real diversity supported by the ecosystems of the state.

Chemical Attractants in a Scolytinae1 Trap System in Avocado Orchards

“…2). Results also agree with those of Falcón et al (2018) who recommended ethanol to monitor borer and ambrosia beetles. The treatments did not significantly attract C. detrimentosus ( P = 0.2562), a species collected in traps baited with ethanol (Atkinson 2022).…”

“…However, Wood (1982), Miller and Rabaglia (2009), and Ranger et al (2010) reported the best attractant for Scolytines was ethanol recommended especially for traps. Similar results were reported by Equihua (1988, 1992), Falcón et al (2018), and Estrada et al (2021) who used it to monitor Scolytine. The attraction effect for combination of commercial attractants corresponds to the synergic effect reported by Kendra et al (2018) and Owens et al (2019).…”

“…Equihua (1988Equihua ( , 1992 mentioned that ethanol was very efficient in collecting Scolytinae, especially species with ambrosial habits. Falcón et al (2018) recommended ethanol for monitoring borer and ambrosia beetles. Ethanol, among other attractants, was used successfully to monitor ambrosia beetles in avocado orchards at Nayarit (Estrada et al 2021).…”

Nuevos registros de Scolytinae (Coleoptera: Curculionidae) en bosques templados de Durango

“…La baja riqueza que mostraron los sitios dos y cinco, así como las altas abundancias de Monarthrum tuberculatum y M. huachucae, presentan relación con el grado de perturbación del ecosistema, ya que esta región presenta daño y disminución en la cobertura vegetal por efecto de brotes epidémicos de insectos descortezadores ocurridos entre 2011 y 2012 (CONAFOR, 2018). Así pues, de acuerdo con lo mencionado por Falcón-Brindis et al (2018), bajos niveles de diversidad de escolitinos y la presencia de especies generalistas están en función de la perdida de vegetación.…”

Diversity of insects associated with the fruits of four tree species of Lauraceae from Los Tuxtlas region, Mexico: an annotated and illustrated taxonomic list

“…Gerónimo-Torres et al (2015) reported very few individuals in the mangrove ecosystem in Tabasco. Similarly, Falcón-Brindis et al (2018) reported few individuals of H. interstitialis in tropical rainforests of Tabasco; however, its abundance increased in disturbed areas such as grasslands and forest crops that are likely advantageous for generalist insects (Falcón-Brindis et al, 2018). This beetle has been reported in Campeche in secondary tropical semideciduous forests in several plant families, being avocado the only Lauraceae (Estrada & Atkinson, 1988).…”