Aprostocetus minimus

Aprostocetus minimus (Ratzeburg, 1848) Figs 28, 29 Geniocerus minimus Ratzeburg, 1848: 175. Tetrastichus minimus: Dalla 1898: 598. Material examined. 2 females: [2 females on cards], China, Heilongjiang Province, Hegang City, Wuzhishan Park, 22. VII. 2020, Ming-Rui Li, by sweeping, deposited in YCTU. Diagnosis. Female. Body small (Figs 28, 29), length 1.3 mm. Thorax with superficial reticulation, median line of mid lobe of mesoscutum distinct; mid lobe of mesoscutum with three to four adnotaular setae on each side; propodeum medially shorter than dorsellum. Forewing with four dorsal setae on SMV, speculum small, MV 3.5 × STV. Body black, head and thorax with bluish metallic tint. Hosts. Unknown from China. Non-Chinese records include Rabdophaga nervorum (Kieffer, 1895), R. salicis (Schrank, 1803), and R. rosaria (Loew, 1850) (Diptera: Cecidomyiidae) (Domenichini 1966). Distribution. China (Heilongjiang [new record], Gansu), Germany, Netherlands (Graham 1987), Sweden (Hedqvist 2003), Russia (Yegorenkova et al. 2007).