Marietta picta ( Andre, 1878 )

Suh, Soo-Jung, 2019, Notes on some parasitoids (Hymenoptera: Chalcidoidea) associated with Acanthococcus lagerstroemiae (Kuwana) (Hemiptera: Eriococcidae) in the Republic of Korea, Insecta Mundi 690, pp. 1-5 : 2

Marietta picta ( Andre, 1878) [ Aphelinidae ] ( Fig. 2 )

Agonioneurus pictus Andre, 1878: 85 . Female, France.

Diagnosis. Female. Body about 0.5 mm long, brownish yellow. Head and thorax with black spots. Antenna light yellow; scape with two black oblique bands; base of pedicel and antennal funicle III (F3) black; F1–F2 and clava black. Legs light yellow, femora and tibia with black transverse bands. Dorsum and venter of abdomen in central portion brown; both sides of abdomen with segmentally arranged dark reticulate strips. Fore wing relatively short, its length less than 2.5 × its width; wing disc with contrasting areas of dark and hyaline setae with fuscated patterns.

Male. Similar to the female except for the antenna and genitalia: tip of antennal clava and F3 pale; dorsum of gaster reticulate; genitalia 4× as long as wide ( Li et al. 2001).

Material examined. Korea. CN: Techno 4-ro, Ryuseong-gu, Daejeon-si, 1 female, ex. A. lagerstroemiae on L. indica , 31-V-2014 (S.J. Suh).

Distribution. Canada, China, Europe, Korea, Mexico, Peru ( Noyes 2018).

Hosts. Recorded from 50 species of scale insects (Coccoidea), aphids ( Aphididae ), and psyllids ( Psyllidae , Triozidae ) ( Noyes 2018).

Remarks. This species is a hyperparasitoid ( Li et al. 2001).

Figures

Figures 1–6. Three species of parasitoids associated with Acanthococcus lagerstroemiae (Kuwana) in Korea. 1) Parasitoid emergence holes in scale covers of A. lagerstroemiae (crapemyrtle scale). 2) Marietta picta (Andre), female. 3–4) Metaphycus eriococci (Timberlake), female and head. 5–6) Zaomma eriococci (Ferrière), female and mesoscutum.