Chamaepsila buccata (Fallén, 1826)

Shatalkin & Merz, 2010: Chamaepsila buccata, Ch. sardoa (Rondani, 1876) and Ch.rozkosnyi Carles-Tolrá, 1993, form a morphologically uniform group. Ch. sardoa has an entirely black antenna (basal segments yellowish in Ch. buccata), 2 dorsocentral setae (1 dorsocentral seta in Ch. buccata), is on average smaller (3-4 mm, Ch. buccata 4-6 mm) and differs in the structure of the male terminalia (Shatalkin, 1986, plate 2, fig. 5 for Ch. buccata (as Ch. gracilis Meigen) and plate 3, fig. 1 for Ch. sardoa). Ch. rozkosnyi is characterized by the presence of 2 fronto-orbital setae (1 fronto-orbital seta in Ch. buccata and Ch. sardoa) and in details of the structure of the male terminalia with a longer aedeagus (Carles-Tolrá, 1993b)
Key: Séguy, 1934

Distribution

Europe: Countries (published), online at Fauna Europaea, Occurrences at GBIF
UK: Recording Scheme map of occurrences 2016 (verified.) Online (NBN Atlas) via Easy maps or Interactive Atlas