Arcifrons arcifrontalis Ding & Yang, 1986. 5 head and throad, dorsal view 6 frons and clypeus 7 the same, lateral view 8 tegmen 9 male genitalia, posterior view 10 the same, lateral view 11 aedeagus 12 genital style, posterior view 13 the same, left lateral view 14 female genitalia, posterior view 15 gonapophysis IX. Scale bars: 0.2 mm (5–10, 14, 15); 0.1 mm (11–13).