Trogoderma granarium does not occur in Spain
Trogoderma granarium (Coleoptera: Dermestidae – EPPO A2 List) was recorded as present in the south of Spain (Seville province) in 1952. Another publication also mentioned its presence in southern Spain in the 1960s, but since then the establishment of the pest has remained doubtful. A survey was carried out in 2016/2017 by Castañé et al. in 15 mills and storage facilities across the Iberian Peninsula and did not detect the pest. Different types of grain storage facilities (animal feed warehouses, rice and wheat mills, wheat warehouses) were surveyed with traps baited with Trogoderma spp. pheromone: 13 in the eastern and southern parts of Spain (Barcelona, Cadiz, Cordoba, Huelva, Navarra, Sevilla, Tarragona, Valencia), 1 in La Rioja province, and 1 in Portugal, near Lisbon. In total, 4418 Trogoderma adult specimens were trapped in 12 out of the 15 facilities surveyed, and these specimens were identified morphologically and molecularly. No T. granarium was found. T. inclusum was found in most sampled premises, and T. variabile in one of them. The authors considered that the latest published report of T. granarium in Spain (Belda and Riudavets, 2013) was a misidentification, as coleopteran specimens caught during this study that was focusing on natural enemies of lepidopteran pests of stored products were not rigorously identified. In addition to the results of this survey, the absence of T. granarium has been officially confirmed by the NPPO of Spain.
The pest status of Trogoderma granarium in Spain is officially declared as: Absent, confirmed by survey.
NPPO of Spain (2020-09).
Belda C, Riudavets J (2013) Natural enemies associated with lepidopteran pests in food and feed processing companies. Journal of Stored Products Research 53, 54e60. https://doi.org/10.1016/j.jspr.2013.02.006
Castañé C, Agustí N, del Estal P, Riudavets J (2020) Survey of Trogoderma spp. in Spanish mills and warehouses. Journal of Stored Products Research 88, 101661. https://doi.org/10.1016/j.jspr.2020.101661