Брухине (Coleoptera: Chrysomelidae; Bruchinae) – штеточине семена дрвенастих махунарки и биопотенцијал багремчевог жишка у редукцији инвазивне врсте Amorpha fruticosa L. у Србији

Five species of Bruchinae (Coleoptera: Chrysomelidae, Bruchinae), were determined in Serbia, which are seed pests of six wild and cultivated woody species from the Fabaceae family (Amorpha fruticosa L., Gleditcia triachanhos L., Cercis siliquastrum L., Laburnum anagyroides 17, Gimnocladus dioicus (L.) K. Koch and Albizia jullibrissin Durazz. 1772 non sensu Baker, 1876). During the research it was found that the genus Acanthoscelides Schilsky, 1905 is represented with one species – Acanthoscelides pallidipennis Motschulsky in 1874; genus Bruchidius Schilsky, 1905 is represented with three species: Bruchidius siliquastri Delobel, 2007, Bruchidius terrenus Sharp, 1886 and Bruchidius villosus Fabricius, 1792, genus Megabruchidius (Borowiec, 1984) is represented by one species, Megabruchidius tonkineus (Pic, 1904.). The species A. pallidipennis and B. terrenus were recorded for the first time in the fauna of Serbia. Plant material was collected from 2006 to 2016. Sampling was carried out in a total of 51 localities in Serbia. The study used standard entomological methods. A. pallidipennis has been confirmed to be a monophag of the species A. fruticosa; B. terrenus is monophagus of A. jullibrissin, while B. siliquastri , B. villosus and M. tonkineus are comfirmed as oligophagus. The imago of M. tonkineus found in G. triachanhos pods, was also capable of infesting G. dioicus seeds as well, thereby a new genus of the host of Gimnocladus Lam has been reported(M. tonkineus found feeding within seeds of G. dioicus plant). The morphology, biology, distribution, as well as the trophic preferences of the insect species were studied. The biology of the investigated spermatophagus species of Bruchinae was found to be related solely to the plant-feeding species and synchronized with its phenology. The flight dynamics of seed beetles was monitored in the external environment during five years of research. Based on the established biology, calendars of development of the studied species of Bruchinae were made. To determine the effectiveness of A. fruticosa seed beetles as a potential bioagents, the percentage of seed parasitization as well as the percentage of germination of the attacked leguminous seed was determined. The rates of infestation of pods were up to 55, 67%. At the same time, the presence of the most common false indigo bush seed beetles parasitoids were recorded: Eupelmus urosonus (Dalman 1820) and Eupelmus vesicularis (Retzius, 1783) (Chalcidoidea: Eupelmidae) and Dinarmus acutus (Thomson, 1878)) (Chalcidoidea: Pteromalidae), as predators of false indigo bush seed beetles – Pyemotes ventricosus, Newport, 1853 (Acari: Pyemotidae). The dependence between seed infestation and habitat categories was statistically determined; infestation was significantly higher in dry than in flooded habitats. The rest of false indigo bush entomofauna has also been determined: Cetonia aurata (Linnaeus, 1761) (Coleoptera: Scarabaeidae), Tropinota (Epicometis) hirta (Poda, 1761) (Coleoptera: Scarabaeidae), Anomala errans (Fabricius, 1775), (Coleoptera: Scarabaeidae), Megachile rotundata (Fabricius, 1787) (Hymenoptera: Apidae), Metcalpha pruinosa (Say, 1830) (Homoptera: Flatidae), Parthenolecanium corni (Bouché, 1844) (Hemiptera: Coccidae) and Pseudaulacaspis pentagona (Targioni Tozzetipida, 1886) ). False indigo bush bean has been shown to exhibit host specificity, mobility and adaptability to changing environmental conditions, suggesting its biopotential for controlling the A. fruticosa as introduced and aggressive weed species. The topic of using False indigo bush seed weevil as a bioagent is under-researched, indicating the need for further studies.