New Zealand Journal of Agricultural Research abstracts

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Short communication
The life history of the capitulum weevil, Larinus latus (Herbst) (Coleoptera, Curculionidae)

Levent Gültekin
Şaban Güçlü

Atatürk Üniversitesi
Ziraat Fakültesi
Bitki Koruma Bölümü
25240, Erzurum
Turkey
email: sguclu@atauni.edu.tr

Olga N. Nikulina

A. N. Severtsov Institute of Ecology and Evolution
Russian Academy of Sciences
Moscow, Russia

Abstract   The biology of Larinus latus (Herbst) (Coleoptera, Curculionidae), a weevil associated to one of the most serious pasture weeds in Turkey, Onopordum bracteatum, has been studied in Erzurum during 1999-2001. Adults migrated to lowlands at the beginning of June and fed on the leaves, capitula, and pollen of O. bracteatum. Females laid eggs on bracts, in the florets, and in stems of capitula. The larvae hatched at the beginning of July and fed on the base of capitula, florets, and seed. Mature larvae produced pupal cells in the margins of capitula and then pupated after the third week of July. The new generation of adults emerged from pupae from early August to the beginning of September, and 3-5 days after emergence migrated to higher altitudes approximately 2400 m for overwintering. The species completed one generation per year in Erzurum conditions.

Keywords   Onopordum bracteatum; Larinus latus; life history

A02047; Received 17 July 2002; accepted 26 February 2003; online publication date 9 September 2003
New Zealand Journal of Agricultural Research, 2003, Vol. 46: 271-274
0028-8233/03/4603-0271 $7.00/0 © The Royal Society of New Zealand 2003

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