Diversity of spiders (Arachnida: Araneae) in a rural coffee landscape in the department of Risaralda, Colombia

109 p. Recurso ElectrónicoSe evaluó la diversidad de arañas en un paisaje rural cafetero ubicado en El Brillante, municipio de La Celia, Risaralda en diferentes coberturas vegetales. Se realizaron muestreos diurnos en tres cafetales de sol y tres bosques remanentes (siete puntos de muestreo por cobertura), mediante colecta manual de suelo (0 – 0,5 m), colecta manual aérea (0,5 – 2 m) y agitación de follaje (2 – 5 m). Se colectaron 1425 individuos adultos pertenecientes a 16 familias, agrupados en 87 morfoespecies (mfsp) de las cuales 28 fueron determinadas a nivel de especie y 29 de ellas a género. Las familias más abundantes fueron Linyphiidae (473 indv.) y Pholcidae (266), y las de mayor riqueza Theridiidae (27 mfsp) y Araneidae (18). Los cafetales fueron la cobertura que presentó mayor abundancia, riqueza y diversidad con 848 individuos y 62 mfsp (H’= 2.83, 1-D= 0.12), respecto de los bosques que presentaron 577 individuos y 47 mfsp (H’= 2.60, 1-D= 0.18). Las coberturas comparadas con Chao-Jacard presentaron una baja similitud (0.45). El gremio dominante fue el de las arañas constructoras de telas tridimensionales. A pesar de tener una menor extensión, los remanentes de bosque albergan cerca del 50% de la composición de arañas; sin embargo, es interesante que el resto de la riqueza está asociada a una cobertura vegetal altamente homogénea (Cafetal), lo que indica el potencial de este elemento del paisaje rural cafetero para la conservación y estudio de la biodiversidad de arácnidos en Colombia.Spider diversity in coffee countryside located in El Brillante, municipality of La Celia, Risaralda in different coverages was evaluated. Diurnal samples were taken in three sun coffee plantations and three remaining forests (seven sampling points for each coverage) using looking down (0 - 0.5 m), looking up (0.5 - 2 m) and beating (2-5 m). 1425 adult individuals distributed in 16 families and 87 morphospecies (mpsp), of which 28 were determinanted until species and 29 until genre, were collected. Linyphidae (473 indv.) and Pholcidae (266) were the most abundant families while Theridiidae (27 mpsp) and Araneidae (18) were the most richest. Coffe plantations were the coverage with the highest abundance, richness and diversity with 848 individuals and 62 mpsp (H '= 2.83, 1-D = 0.12), with respect to forests that had 577 individuals and 47 mpsp (H' = 2.60, 1-D = 0.18). According to Chao-Jacard index the coverages had low similarity value between them (0.45). Space web builders spiders were the most dominant guild for this study. Despite having a lesser extent, the remnants of forest are home to nearly 50% of the composition of spiders; however, it is interesting that the rest of wealth is associated with a highly homogeneous vegetation cover (Cafetal), indicating the potential of this element of the coffee countryside for conservation and study of biodiversity of arachnids in Colombia. Keywords: coffee plantations, agroecosystem, secondary forest, conservation