Abstract
The Orocantabrian phytogeographic Province is situated in Cantabrian Mountain Range in the north-weast of the Iberian Peninsula. It is the only phytogeographic Province which is exclusively Iberian in the Eurosiberian phytogeographic Region. The aphidfauna of the southern side of the Province has been studied from bibliographic and unpublished data from 92 localities within the province of Leon. Two hundred and sixtysix species of aphids (Hom. Aphididae) belonging to 9 subfamilies are recorded. Monaphis antennata is reported for the first time in Spain and Acyrthosiphon echinospartii for the second. Another 53 species are recorded for the first time in the area. Family distribution with regard to world fauna is discussed. The distribution of aphid species in the three phytogeographic Sectors of the Province is discussed: the richest Sector is “Ubinense-Picoeuropeano”, probably because of its greater floristic diversity. The height distribution of the species is discussed, paying special attention to the absence of some species at lower altitudes (less that 1,000 m) and of others at higher altitudes (1,600 m and higher). Taking into account phytogeographic-altitude inventories, a study of simalirity of the overall distribution of the aphids in the Province was carried out. The existence of an altitudinal gradient and up to a certain point of a longitudinal gradient (from east to west) is concluded.
Highlights
The Orocantabrian phytogeographic Province is situated in Cantabrian Mountain Range in the north-weast of the Iberian Peninsula
Further to the right the species belonging to the plot groups is shown, from what is staded in the text.- : exclusive to the group, : presence in the group
Consideramos que la situacion es lógica si tenemos en cuenta el elevado número de especies comunes que presentan esos inventarios con los de las clases II y III, especialmente en el sector LA, pues UP-I está algo separado del conjunto UP-II y UP-III
Summary
La Provincia fitogeográfica Orocantábrica (figura 1) es la única Provincia exclusivamente ibé-. Fig. 1.— Mapa de la parte noroeste de la Península Ibérica con los límites de la Provincia fitogeográfica Orocantábrica y de sus tres sectores fitogeográficos (Campurriano-Carrionés, CC, Ubiñense-Picoeuropeano, UP, y Laciano-Ancarense, LA), señalándose la vertiente Sur de la Provincia. Fig. 1.— Map of the North-west part of the Iberian Peninsula with the limits of the Orocantabrian phytogeographic Province and its phytogeographic sectors (Campurriano-Carrionés, CC, Ubiñense-Picoeuropeano, UP, y Laciano-Ancarense, LA), showing the southern slope of the province.
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