Citrogramma clarum (Hervé-Bazin)
In his original description, Hervé-Bazin (1923a) gave a short diagnosis of his new species, Olbiosyrphus clarus, based on material from Laos, Tonkin (Vietnam) and Java. In 1926, Hervé-Bazin redescribed this species, providing more details about adult morphology and included three figures (habitus, head and pleuron), and the type material. His illustrations showed perfectly the abdominal pattern and coloration of legs, pleuron pattern and, the most diagnostic character, the angle between eyes. He designated a male type from Chapa, Tonkin (now Vietnam) collected on 8.vi.1916, and designated a male cotype from the same location (Chapa, 11.vii.1918) and three more male cotypes from Laos (Louang-Prabang, 12.ii.1915; Nan-Long, 28.iv.1918; Dang-Hé, 29.iv.1918). He also mentioned in his collection another male from Java in poor condition.
Sysnonyms:
Xanthogramma fasciatum Shiraki, 1930: 402 (ident. key), 410 (descr.), fig. 94 (head, abd. and antenna); Hull, 1949: 290 (cit.).
Xanthogramma fasciata of Knutson et al., 1975: 320 (cat. cit.).