Colydium elongatum (Fabricius, 1787) Distribution Azerbaijan, Albania, Armenia, Austria, Belgium, Bosnia and Herzegovina, Bulgaria, Belarus, Croatia, Czechia, Denmark, Finland, France, Great Britain, Germany, Greece, Hungary, Italy, Lithuania, North Macedonia, The Netherlands, Poland, Romania, Russia (European and Asian Territory), Slovakia, Slovenia, Spain, Sweden, Switzerland, Ukraine, Serbia and Montenegro, European and Asian Türkiye, Cyprus, Iran, Syria, Algeria, Morocco, Tunisia (Schuh 2020). Notes In Bulgaria, C. elongatum has been previously recorded from Sarnena Sredna Gora Mountains (Joakimov (1904): 16), from the vicinity of Ropotamo River mouth (Black Sea coast) (Dajoz (1971): 100), from Kresnenski Prolom Gorge, Maslen Nos Cape, Strandzha Mountains (Węgrzynowicz 1999: 287) and from north-eastern Bulgaria (without exact localities) (Parmain et al. (2024): 300 (map)). Colydium elongatum is similar in habitus to recently described C. noblecourti Parmain, Eckelt & Schuh, 2024 and some of the earlier records may, in fact, refer to the second species. Both specimens found in the historical collection of Dimitar Joakimov (NMNHS) and previously identified as C. elongatum, after revision of the identification turned out to be C. noblecourti (Fig. 5).

Published as part of Gradinarov, Denis, Petrova, Yana, Sivilov, Ognyan & Stefanov, Vladimir Stefanovich, 2026, Checklist of the family Zopheridae (Coleoptera, Tenebrionoidea) of Bulgaria, pp. e 192174 in Biodiversity Data Journal 14 on page e192174, DOI: 10.3897/BDJ.14.e192174