Abstract
Simuliidae family in Spain has been studied irregularly: some enclaves have been widely investigated by both national and foreign experts, while others have been merely mentioned or addressed indirectly for various reasons. The Madrid Region in Spain has been recurrently investigated in this respect, yet many geographical areas remain to be studied regarding Simuliidae taxonomy, geographical distribution, and ecology. In this study, a thorough sampling was conducted based on searching for preimaginal stages of larva and pupa attached or fixed to any suitable support in different lotic water systems. The latter were chosen for their favourable conditions for hosting new and valuable information. The collected material was identified based on morphological characteristics. A total of 16 species were identified. The following is an update of the simuliid fauna and its altitudinal ranges from Spain’s central geographical area, including seven new records for the Madrid Region: Prosimulium rufipes (Meigen, 1830); Simulium (Nevermannia) naturale Davies, 1966; Simulium (Nevermannia) quasidecolletum Crosskey, 1988; Simulium (Nevermannia) urbanum Davies, 1966; Simulium (Simulium) trifasciatum Curtis, 1839; Simulium (Simulium) maximum (Knoz, 1961); Simulium (Simulium) variegatum Meigen, 1818. Following the update, the species with the narrowest altitudinal distribution were: S. (N.) naturale and S. (N.) urbanum: 1843-1844 meters (m), while Simulium (Nevermannia) cryophilum (Rubtsov, 1959) and Simulium (Simulium) intermedium Roubaud, 1906 presented the widest distribution: 870-2000 m. In this study, S. (N.) naturale and S. (N.) urbanum also displayed the narrowest altitudinal range, with 1 m, whereas S. (N.) cryophilum presented the broadest, with 603 m. The present study contributes to the knowledge of Spanish blackflies generally and from the Madrid Region in particular, providing new insights into the species composition and their altitudinal distribution. It thus lays the foundations for future works.
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