Knowledge of the fauna of jumping plant lice or psyllids in Bulgaria is rather scattered. So far, 113 species of psyllids have been recorded from Bulgaria in 51 publications. The aim of this study is to provide an up-to-date checklist of the Psylloidea species from Bulgaria, based on extensive fieldwork by the authors and examination of specimens mainly from the Zoological Collection of Sofia University (BFUS) and the Moravian Museum in Brno (MMBC). In addition, a thorough review of all relevant literature was undertaken to consolidate the existing records.<br> Twenty-five species of jumping plant lice are recorded here from Bulgaria for the first time. Of these, two species represent new records for Europe: Dyspersa kantshavelii (Gegechkori, 1977) and Heterotrioza kochiae (Gegechkori, 1975); and three additional species represent new records for the Balkan Peninsula: Arytainilla spartiicola (Šulc, 1912), Craspedolepta araneosa Loginova, 1962 and Eryngiofaga babugani (Loginova, 1964). A new synonymy is proposed: Colposcenia osmanica Vondráček, 1953 = Colposcenia kiritshenkoi Loginova, 1960, syn. nov. A lectotype is designated for C. osmanica to stabilise the nomenclature. Original drawings or photographs of diagnostic characters on male and female terminalia are provided for C. osmanica, D. kantshavelii, Heterotrioza eurotiae (Loginova, 1960) and H. kochiae. Distributional maps summarising all known records from Bulgaria are provided for each species. Where available, photographs of live or mounted specimens and information on host plants are also provided, including new host plant records for 10 species. The previously published records of Aphalara sauteri Burckhardt, 1983, Bactericera acutipennis (Zetterstedt, 1828), B. reuteri (Šulc, 1913), Dyspersa apicalis (Foerster, 1848), D. viridula (Zetterstedt, 1828), Eryngiofaga mesomela (Flor, 1861) and Trioza dispar Löw, 1878 from Bulgaria are considered doubtful and these species are deleted from the list of the Bulgarian fauna, which now comprises 130 species from 33 genera and six families of jumping plant lice. This diversity is compared with the known data on Psylloidea in other countries of the Balkan Peninsula and Turkey and the Bulgarian psyllid fauna is discussed from the perspective of biogeography.
