Ampliación de la distribución conocida de odonatos amenazados en Castilla y León (España)

Improvement of known geographical distribution of threatened Odonata in Castilla y Leon (Spain) Abstract: This paper presents the results of field surveys carried out during the summer of 2014 in the largest riverbeds of Castilla y Leon, aimed at detecting Odonates. We describe new records of riverine Anisoptera species for this region, which are included in the Red List of Threatened Invertebrates of Spain. Specifically, the first records of Macromia splendens in Alberche and Tormes ri- vers, Oxygastra curtisii in Tormes, Manzanas, Negro and Alagon rivers, Gomphus graslinii in Alagon and Alberche rivers, Gomphus simillimus in Esla, Duero, Tormes and Alberche rivers and Gomphus vulgatissimus in the Duero river are provided. The presence of M. splendens populations, which located at higher altitudes than were previously considered for this species are described as well. Evidence of reproduction in this species has been recorded at an altitude of 1167 masl in the Alberche river.