Phytomyza ranunculi

(Figs. 261–264, 640–645)

Material examined: Belgium: Province of Antwerp: Edegem, Kattenbroch sporthall, 51°11’N, 4°30’E, 20.v.2018, 13.vi.2018, I. Moskalets, ex Ranunculus sp. (2♂ 3♀); Germany: Baden-Württeimberg State: Öhringen, 49°12’N, 9°30’E, 21.ix.2018, I. Moskalets, ex Ranunculus sp. (2 puparia); Ukraine: Transcarpathia: Shyrokyi Luh, 550 m a. s. l., 48°18’N, 23°43’E, 19.vii.2017, Yu. Guglya (1♂ 1♀); Rakhiv, 600 m a. s. l., 48°05’N, 24°08’E, 11.v.2018, Yu. Guglya, ex Ranunculus sp. (2 puparia); Volyn Region: near Shatsk, The Shatsk National Nature Park, 52°34’N, 23°54’E, 25.v.2019, Yu. Guglya, ex Ranunculus sceleratus (1 puparium); the same location, 27.v.2019, Yu. Guglya, ex Ranunculus repens (1 puparium).

Hosts. Ranunculaceae: Ranunculus L. (Benavent-Corai et al. 2005), Anemone L. (Warrington 2021).

Mine. (Fig. 261) The larva forms a white irregular linear upper surface leaf mine. Pupation takes place outside the mine in the soil.

Puparium. (Figs. 262–264) Greyish, translucent, 2.8 mm long, with weak segmentation; surface finely wrinkled except for wide bands of fine spines. Posterior spiracles set on wide cylindrical protuberances that are entirely separate; black, glossy, with 17 sessile bulbs arranged in a narrow open ellipse. Anal plate distinctly protruding above the surface of the puparium viewed from the side and directed ventro-posteriorly.

Cephalopharyngeal skeleton. (Fig. 640) Right mouthhook larger than the left, each bearing two accessory teeth. Intermediate sclerite long and straight, with two small, sharp protuberances located dorsally and ventrally; sclerite 1.36× as long as maximum height of left mouthhook. The mouthhook, intermediate sclerite and the dorsal cornu medially and anteriorly are strongly sclerotized and the rest of the pharyngeal sclerite is much less so. The ventral cornu bears a narrow “closed” window located centrally. Indentation index 81. See also P. ranunculi albipes in Sasakawa (1961: Fig. 142 l).

Female head. (Figs. 641, 642) Bright yellow, with only arista, pped and oc tr medially black; with orbit projecting above eye in profile; 1 orb s, 1 fr s; lunule broad, narrowing posteriorly, reaching the level of fr s; pped of medium size, rounded; gena medially 0.33× as high as maximum height of eye.

Female genitalia. (Figs. 643–645) Capsule of spermatheca relatively small, 0.18× as high as height of anterior part of oviscape. Spermathecae equal in size, brown, flattened basally and rounded apically, wider than high. Internal duct invagination trapezoid, 0.95× as deep as height of spermatheca. Spermathecal duct weakly sclerotized. Ventral receptacle S-shaped, with thin, short, well sclerotized tail that is bowl-shaped in basal half. Body of receptacle spherical, with sharply curved, rather long basal connecting tube, strongly sclerotized, 0.7× as wide as diameter of capsule of spermatheca; with opening 0.8× as wide as diameter of spherical part of body. Proctiger see P. ranunculi albipes in Sasakawa (1961: Fig. 142 h).

Distribution. Holarctic and Oriental Regions (Papp & Černý 2019). Ukraine (first record).