Aprostocetus gratus ( Giraud, 1863 )

Aprostocetus gratus ( Giraud, 1863) View in CoL

Figs 24–27 View Figures 24–27

Tetrastichus gratus Giraud, 1863: 1275. View in CoL

Tetrastichus deplanatus Thomson, 1878: 291. [Synonymized by Graham 1961: 49] View in CoL

Tetrastichus thomsonii Dalla Torre, 1898: 23. [Synonymized by Graham 1961: 49] View in CoL

Geniocerus gratus View in CoL : Erdös 1956: 51.

Aprostocetus gratus View in CoL : Graham 1961: 49.

Tetrastichus badulini Kostjukov, 1977: 191. [Synonymized by Graham 1987: 283] View in CoL

Material examined.

• 2 females: [2 females on cards], China, Jiangsu Province, NanTong City, Coastal Levee , 4. VI. 2023, Wen-Jian Li, by sweeping, deposited in YCTU .

Diagnosis.

Female. Antenna (Fig. 27 View Figures 24–27 ) with F 1 distinctly longer than F 2, 2.5 × as long as broad, F 3 apical margin oblique, dorsal edge distinctly longer than ventral edge, clava quite short, solid, obtuse apically, terminal spine downward curved and slender, ~ 0.5 × as long as the clava itself, apical seta of spine rudimentary. Forewing (Fig. 26 View Figures 24–27 ) narrow, 2.5–2.6 × as long as broad; MV 3.9–4.0 × STV; SMV with four dorsal setae; speculum very narrow. Body (Figs 24 View Figures 24–27 , 25 View Figures 24–27 ) black with bright blue metallic tint; legs yellowish with terminal tarsus brown; gaster basal 1 / 4 yellow.

Male. Unknown for Chinese material.

Hosts.

Unknown from China. Non-Chinese records include Giraudiella inclusa (Frauenfeld, 1862) , Lasioptera arundinis Schiner, 1854 ( Diptera : Cecidomyiidae ) ( Graham 1987).

Distribution.

China ( Jiangsu [new record], Gansu [ Zhang et al. 2007]), Moldova ( Bouček 1966), Romania ( Tudor and Roman 1973), Austria, Netherlands, former Czechoslovakia, Denmark, Germany, Finland, France, Ireland, Hungary, Italy, Sweden, United Kingdom, Russia ( Graham 1987).

Comments.

This species can be distinguished from other Aprostocetus species by the unique F 3 and clava.