Because of its heterogeneity in ecoregions and its varied topography, the Mexican peninsula of Baja California (BCP) is an area of high diversity for many taxa, including spiders. However, a paucity of studies means that the diversity of BCP’s spiders is generally poorly known. The North American jumping spider genus Phidippus comprises over 60 species, of which approximately 45% are found in Mexico. Among those, 6 have been recorded to date from the BCP but adding up the species recorded in nearby states, up to 20 more can be expected. As part of a larger study on the evolution and biogeography of the North American genus Phidippus, the aim here was to explore the diversity of the genus in the BCP using an integrative taxonomic approach and to present new distributional records. Until now, at least ten species have been collected from the BCP, one of which is a new record for Mexico, three new records for the BCP, and at least one undescribed species.

G. (2017). Eficiencia de trampas "pitlight" con LED para el muestreo de Coleoptera nocturnos (Insecta) en selvas tropicales. Acta Zoológica Mexicana (n.s.) 33(2), 314-327. RESUMEN.Se evaluó el uso de trampas de caída con luz portables ("pitlight") con diodos emisores de luz (LED) para la captura de Coleoptera nocturnos en una selva tropical, con la finalidad de proveer herramientas eficientes para el monitoreo de insectos. Se comparó la diversidad de familias y morfoespecies recolectada con trampas de caí-da pasivas ("pitfall") y con trampas de caída con luz ("pitlight") de tres distintas longitudes de onda (azul, blanca y amarilla), bajo la hipótesis de que las trampas pitlight son más eficientes, y que los insectos serán más atraídos por las longitudes de onda más cortas y de alta frecuencia. Además, el muestreo se dividió en dos períodos nocturnos de cinco horas, con el objetivo de analizar el tiempo necesario para obtener una colecta significativa. Las recolectas con trampas pitlight fueron notablemente superiores a las pitfall pasivas, y aunque no se encontraron diferencias significativas entre los valores de riqueza, abundancia y diversidad de coleópteros obtenidos con tres colores de LED (azul, blanco, amarillo), ni entre los horarios nocturnos de recolecta, sí se observó una alta disimilitud en la composición de morfoespecies entre los distintos tratamientos. Las trampas pitlight con LED son un méto-do sencillo, portátil y económico que es capaz de obtener una captura eficiente y representativa en periodos de tiempo muy cortos, por lo que se recomienda su uso para el inventario de comunidades de insectos. Palabras clave: Coleoptera, diodos emisores de luz, bosque tropical perennifolio. ABSTRACT. In this study, with the aim to provide more efficient tools for insect monitoring, we test the efficiency of pitlight traps with light-emitting diodes (LED) in captures of nocturnal Coleoptera from a tropical forest. Under the hypothesis that pitlights are more efficient and that insects would be mainly attracted by shorter and higher frequency wavelengths, families and morphospecies diversity obtained with passive pitfall and pitlight traps of three different colors (blue, white and yellow light) was compared. In addition, with the purpose to analyze the necessary time to obtain a significant sample of Coleoptera, sampling was carried out in two nocturnal periods of five hours. Captures with pitlight traps were noticeably superior to that with passive pitfalls and, even though there were no significant differences between richness, abundance and diversity values obtained for three color of LED (blue, white, yellow), not even among both nocturnal sampling periods, we found a high dissimilarity in morphospecies composition among them. Pitlight traps with LED are a simple, portable and inexpensive method able to obtain an efficient and significant capture in short time periods, so we recommend their use for the inventory of Coleoptera communities. Pérez