More than previous years, this years hazelnut harvest has been hit by the hazelnut weevil (Hazelnootboorder / Curculio nucum) a member of the Curculionoidea family.The weevil lays its eggs in the young, soft hazelnut in June. The nut is devoured by the larvae from the inside out. Infestation is only noticed at an advanced stage, as the nut initially develops normally. The fully developed, up to 15 mm long, larvae actively emerge from the nut and spend the winter in the soil, near the roots. The roughly 2 mm large exit hole produced by the larvae of the hazelnut weevil is a typical sign of damage.All though they are a pest, I hope to make some photos of the adult weevils. They are funny looking beetles.Canon 40DCanon EF100mm f/2.8 Macro USMCanon extension tube EF25 IIISO 100, 1/100 sec., f/16,0+0 EVFlash using a reflector
Familie: Curculionidae Grösse: 6-8,5 mm Verbreitung: Europa bis Westasien, Nordafrika Ökologie: Entwicklung in den Nüssen von Haselsträuchern Fundort: Germania, Bayern, Oberfranken, Kulmbach leg.det. U.Schmidt, 1972 Foto: U.Schmidt, 2005
Summary[edit] Description: Haselnussbohrer auf einer Linde. Länge 8 mm ohne Rüssel. Date: 15 May 2010. Source: Own work. Author: Hedwig Storch. Other versions: .
