A new Chrysomelid-Pinaceae relationship: Calomicrus foveolatus (Coleoptera, Chrysomelidae) feeding on the Andalusian fir, Abies pinsapo (Pinaceae) in the Sierra de las Nieves National Park (Málaga, Spain)

Abstract

Aim of study: A defoliating insect, Calomicrus foveolatus, feeding on the Andalusian endemic fir Abies pinsapo (Pinaceae) is herein reported for the first time. Until now, this chrysomelid beetle was known to feed exclusively on Quercus spp. (Fagaceae).
 Area of study: The study was carried out in the forests of A. pinsapo, restricted to protected mountainous areas of western Málaga and eastern Cádiz in southern Spain.
 Material and methods: Since 2001 we carried out monitoring for potentially damaging insects at five sites of the pinsapo forests at least once a year. The monitoring visits were increased to 2-3 times a year at the sites that contained the phytophagous species.
 Main results: Calomicrus foveolatus was observed feeding on pinsapo needles in sites of Sierra de las Nieves National Park, in Málaga province. Besides, damaged pinsapos were also observed in Sierra de Grazalema Natural Park in Cádiz Province. Feeding activity consisted of partial and superficial damage from gnawing on the upper side of the needles; eventually producing death of the needles and finally death of the entire shoot. The recognition characteristics of the beetle and its injury on the needles and branches are described.
 Research highlights: It is described, for the first time, the attack of a phytophagous leaf beetle, C. foveolatus, to the endemic conifer A. pinsapo, in the National Park “Sierra de las Nieves” in the province of Málaga, Spain. Further monitoring of this beetle is necessary for the sustainable management of this protected fir endemic to the Baetic regions.