Abstract: A checklist of carrion-related arthropods collected in association to pig carcasses in Aiako Harria Natural Park (Basque Country, northern Spain) is presented. Leaving aside the subphylum Myriapoda, there are 16 orders represented in 7837 specimens, being the most important those of the class Insecta (7667 specimens; 98%). The moment in which they were present during the decomposition of a piglet carcass is detailed, and an analysis of the diversity of each decomposition stage was performed. Fresh stage is the moment when a higher degree of dominance and less diversity were found, being the dry stage the most diverse one. It should be stressed out the huge amount of new records: 2 new species for Science [Crossopalpus sp. n. (nr. nigritellus and aeneus) and Drapetis sp. n. (group exilis) (Diptera: Hybotidae)]; 1 genus (Alloborborus) and 8 species new for the Iberian Peninsula (Crossopalpus humilis, Meroplius fukuharai, Nemopoda speiseri, Sepsis luteipes, Alloborborus pallifrons, Phthitia empirica, Spelobia cambrica, Trachyopella kuntzei); 7 new species for Spain (Siphunculina aenaea, Siphunculina quinquangula, Megaselia citrinella, Megaselia meconicera, Megaselia tama, Pseudacteon formicarium, Ischiolepta denticulata); 1 new species for the peninsular Spain (Telomerina levifrons); 2 family, 12 genus and 29 species new for the Basque Country; and 1 family, 4 genus and 3 species new for Guipúzcoa. This study may serve as a reference for future forensic studies in the Basque Country and other similar biogeoclimatic areas.

Díaz-Martín, B., Saloña-Bordas, M.I., 2015. Arthropods of forensic interest associated to pig carcasses in Aiako Harria natural park (Basque Country, Northern Spain). Ciencia Forense 12, 211-232.