Original scientific paper

https://doi.org/10.17971/ec.23.1.5

Polyodaspis rufi cornis (Macquart, 1835) (Diptera: Chloropidae) not wellknown walnut insect pest in Bosnia and Herzegovina

Mladen Zovko orcid.org/0000-0001-9740-6610 ; Faculty of Agriculture and Food technology University of Mostar, Mostar, Bosnia and Herzegovina *
Ivan Ostojić ; Faculty of Agriculture and Food technology University of Mostar, Mostar, Bosnia and Herzegovina
Danijela Petrović ; Faculty of Agriculture and Food technology University of Mostar, Mostar, Bosnia and Herzegovina
Helena Brekalo orcid.org/0000-0002-7358-6829 ; Faculty of Agriculture and Food technology University of Mostar, Mostar, Bosnia and Herzegovina
Jurica Primorac orcid.org/0009-0005-0697-1590 ; Faculty of Agriculture and Food technology University of Mostar, Mostar, Bosnia and Herzegovina

* Corresponding author.

Abstract

Polyodaspis ruficornis is a species widely distributed in the Palearctic and Oriental regions. Larvae of this species are extremely polyphagous, preferring foods rich in proteins. They develop as saprophages, caprophages, phytophages, and parasites in the preimaginal stages of insects. In the literature, the species is also mentioned as a pest of walnut fruit. The larvae of this fly develop in the green shell (exocarp) of the walnut fruit. As a result of the feeding of the larvae, the green lupine of the walnut fruit becomes soft, due to the release of tannin, turns black over time, and sticks to the shell of the walnut, from which it is difficult to separate. Damage to walnut fruits is
very similar to damage caused by the larvae of the walnut husk fly Rhagoletis completa. Through monitoring carried out during August and September 2023, the infection of walnut fruits by P. ruficornis was determined in numerous localities in the municipalities of Žepče, Kiseljak, Prozor-Rama, Mostar, Čitluk, and Neum. Depending on the locality, the intensity of infection ranged from 3% in the locality of Ripci (Prozor-Rama) to 32% in the locality of Donja Papratnica (Žepče). The pest is often found in walnut fruits together with the larvae of the codling moth Cydia pomonella, but also in fruits that were not visibly attacked by another pest or disease agent.

Keywords

Polyodaspis ruficornis; Juglans regia L.; damage intensity; distribution; Bosnia and Herzegovina

Hrčak ID:

318740

URI

https://hrcak.srce.hr/318740

Publication date:

25.6.2024.

Article data in other languages: croatian

Visits: 514 *