The temporal variation in a community of nocturnal and diurnal Lepidoptera was studied in a Mediterranean mid-mountain area of the SW Iberian Peninsula between 2017 and 2019. Monthly samplings that allowed for the identification of 3528 specimens, belonging to 373 species from 40 different families, also provided data on the temporal and seasonal variation in richness and the abundance (dominated by Geometridae and Noctuidae), diet type (mainly oligophagous), voltinism (mostly univoltine) and biogeography of the community, primarily Mediterranean in scope. Richness, abundance and diversity were also found to be highly positively correlated with temperature and solar radiation, and less negatively correlated with precipitation and humidity. Canonical correspondence analyses (CCAs) also indicate that temperature and radiation are the climatic variables with the greatest influence on species occurrence over the different months of the year. The CCAs gave a cumulative variance value of 84.79% when using the monthly mean values of temperature, solar radiation and minimum relative humidity, and 86.4% if only monovoltine species were considered. Guidelines to maintain diversity in the environment of the study area are provided. It is possible that the area may function as a refuge area for Lepidoptera in the face of climate change and deforestation that are occurring in the geographical environment.

The Immature stages of Nemapogon nevadella (Caradja, 1920), are described and illustrated, as well as a sample of wings patterns, their biological cycle and its distribution in the province of Huelva (Spain).

The first record of Bucculatrix alaternella Constant, 1890, in the Sierra de Aracena and Picos de Aroche Natural Park and in the province of Huelva (Spain) are presented. We also provide data on its biology in the study area and the genitalia of the female is described.

The monospecific genus Lourdesiella Bernabé, Huertas & Vives, gen. nov. (Stathmopodidae), and the species Lourdesiella falcatum Bernabé, Huertas & Vives, sp. nov. (Stathmopodidae) are described. Analysis of the mitochondrial cytochrome oxidase I (COI) gene, DNA barcode for the new species, is performed. Data on its biology are given.

Se describen e ilustran los estados inmaturos de Nyctegretis ruminella (La Harpe, 1860), que vuela en Huelva (España), así como su ciclo biológico, su alimentación (detritus de diversas plantas), su genitalia y su distribución.

Se muestran los registros recabados durante las prospecciones sistemáticas llevadas a cabo con frecuencia mensual a lo largo de 2017, 2018 y 2019, en un recinto de 0,5 hectáreas, localizado en un área de media montaña (600 m.s.n.m.) del suroccidente de la Península Ibérica y en el interior de los límites del Parque Natural de la Sierra de Aracena y Picos de Aroche (PNSAPA), al norte de la provincia de Huelva. Se actualizan los datos de especies adquiridos en estudios previos, relativos al periodo 2003-2016 (Bernabé-Ruiz & Huertas-Dionisio, 2018) y a los años 2017 y 2018 (Bernabé-Ruiz et al. 2019, 2020). A lo largo de 2019 se han determinado un total de 1.389 imagos de 258 especies, pertenecientes 37 familias diferentes. Entre ellas, 75 se consideran nuevas para la parcela estudiada, 53 para el PNSAPA, 23 para la provincia de Huelva y 11 para Andalucía. La diversidad total de los 3.528 ejemplares de Lepidoptera identificados durante las tres anualidades 2017-2019 se cifra en 373 especies de 40 familias diferentes. La diversidad total registrada en la parcela de estudio, desde 2003, incluye 414 especies agrupadas en 42 familias, un 83% de las 497 registradas en el PNSAPA hasta el momento. Se describen los imagos y la genitalia de los ejemplares hembra capturados de la especie Agnoea corteganensis Bernabé, Huertas, Jiménez & Vives, sp. nov. (Lypusidae). Se realiza el análisis del gen mitocondrial Citocromo oxidasa I (COI), AND código de barras para la nueva especie.