RHYCHOPHORINI Schönherr, 1833. The average lifespan is about one year. Sitophilus granarius (Linnaeus, ... Life cycle. All larval stages and the pupal stage occur within the grain. Reis-Kornkäfer leben in den Tropen im Freiland und befallen hier Getreidekörner auf den Äckern. Similar species: Sitophilus oryzae and Sitophilus zeamais. Adult granary weevil (Sitophilus granarius) Courtesy of Degesch Inc. Sitophilus granarius (Linnaeus, 1758) Suborder: Superfamily: Family: Subfamily: Tribe: Genus: POLYPHAGA Emery, 1886. Die einzelnen Sitophilus-Arten besitzen zwar Vorlieben für jeweils bestimmte Körner, kommen aber ggf. Life cycle: The life cycle of the weevil is highly dependent on temperature and relative humidity (r.h.). They are rarely seen outside of the grain kernel. The larvae feed inside the grain until pupation, after which they bore a hole out of the grain and emerge. However, since colonizing human-stored grains, S. granarius is likely to have experienced strong selection for traits that facilitate survival in the very different conditions of granaries. Sitophilus granarius . The development from egg to adult grain weevil depends on temperature and relative humidity, and is possible between 11 and 30 ºC. CURCULIONOIDEA Latreille, 1802 CURCULIONIDAE Latreille, 1802 DRYOPHTHORINAE Schönherr, 1825. Besonders für landwirtschaftliche Betriebe, die Getreide lagern, und Mühlen ist ein Schädlingsbefall ein ernstzunehmendes Problem, da die Schädlinge sich sehr schnell vermehren, großen Schaden anrichten und eine gesamte Ernte zerstören können. They possess a long slender snout and cannot fly. Originally native to eastern Mediterranean regions this species has become established throughout … There are small oval pits on the elytra in contrast to round pits found in rice-weevil. The maize weevil (Sitophilus zeamais), known in the United States as the greater rice weevil, is a species of beetle in the family Curculionidae.It can be found in numerous tropical areas around the world, and in the United States, and is a major pest of maize. Lebensweise. In small grains, such as millet or milo maize, weevils are small in size, however in grains such as corn they are larger. It is quite similar in appearance to the rice- weevil, but lacks the light reddish spot on the wing covers. In Mitteleuropa vermögen sie aber ausschließlich in beheizten Gebäuden zu überleben. Female wheat weevils lay between 36 and 254 eggs and usually one egg is deposited in each grain kernel. The grain weevil (Sitophilus granarius) appears to have evolved to feed on grains stored by ants and rodents and thus was preadapted to make the transition to grains stored by humans [35]. Description The granary weevil (Sitophilus granarius) is dark brown-black in colour and is about 2.5 - 5 mm in length. Life Cycle: The granary weevil, Sitophilus, granarius is closely related to rice weevil, Sitophilus oryzae in habits, hosts and life history. an einer Vielzahl von Getreidekörnern vor. SITOPHILUS Schönherr, 1838. Der Kornkäfer (Sitophilus granarius) ist einer der bedeutendsten Getreide- und Vorratsschädlinge.