Determination of the species of Curculionoidea superfamily on alfalfa fields (Medicago sativa L.) and their distribution in Bursa Province of Turkey

This study was carried out to determine superfamily species of Curculionoidea which is living in the alfalfa areas of Bursa province of Turkey during 2004-2005. Insect samplings were collected by sweep net over a 7-12 day period, on alfalfa fields. In this study, among determined species, Hypera postica (Gyllenhal 1813), Apion pisi (Fabricius 1801), Sitona macularius (crinitus) (Marsham 1802), Sitona hispidulus (Fabricius 1777) and Sitona humeralis Stephens 1831 were recorded as important pests and widespread. The most abundance species rates were Apion pisi 85.0%, Hypera postica 7.2%, S. humeralis 3.4%, S. macularis 2.1%, S. hispidulus 1.3 % respectively. Nonetheless Sitona lineatus (Linneaus 1758), Sitona flavescens (Marshall 1802), Ceutorhynchus pallidactylus (Marsham 1802), Ceutorhynchus anatolicus Schultze, 1900, Phyllobius sp., Protapion trifolii (Linnaeus 1768), Ceratapion gibbirostre (Gyllenhal 1813), Gymnetron rotundicolle Gyllenhal 1838 were also found in towns of Bursa province. S. flavescens, Ceutorhynchus pallidactylus, C. anatolicus, Protapion trifolii, C. gibbirostre were the first record in Bursa province.