Liriomyza demeijerei Hering

Liriomyza demeijerei Hering View in CoL

( Figs. 41–43 View FIGURES 41–46 , 188–195 View FIGURES 188–195 )

Material examined. Ukraine: Kharkiv Region: N Kharkiv, Piatykhatky , 50°05'42"N, 36°15'38"E, 7–8.vi.2020 — pupation outside the mine, 18–20.vi.2020 —imago, Yu. Guglya, ex Artemisia vulgaris (2♂ 2♀); same locality, 21– 23.vi.2021 —pupation outside the mine, 2–6.vii.2021 —imago, Yu. Guglya, ex Artemisia vulgaris (3♂ 5♀) GoogleMaps .

Hosts. Asteraceae : Artemisia L. ( Benavent-Corai et al. 2005).

Mine. ( Fig. 41 View FIGURES 41–46 ) The solitary larva forms a yellowish-green upper surface linear leaf mine with long strips of frass arranged along both mine margins. Pupation takes place outside the mine.

Puparium. ( Figs. 42, 43 View FIGURES 41–46 ) Yellow, glossy, 2.0 mm long, with distinct segmentation; surface quite smooth. Posterior spiracles brown, set on yellow, stout, separated conical protuberances; with four hook-like sessile bulbs set in a circular configuration. Anal plate scarcely protruding above the surface of the puparium viewed from the side; directed ventrally. Two shallow round appendages developed between the anal plate and posterior spiracles viewed from the side and posteriorly.

Cephalopharingeal skeleton. ( Fig. 192 View FIGURES 188–195 ) Right mouthhook larger dorsally than the left, both with ventro-anterior portion flattened and abducted anteriorly. Both mouthhooks bear two large accessory teeth; all sharp, uniformly curved ventrally. Mouthhooks are strongly sclerotized, intermediate sclerite, dorsal and ventral cornua much less so. Intermediate sclerite straight and wide. Dorsal and ventral cornua equal in width; ventral more weakly sclerotized bearing an elongated small “closed” window posteriorly. Indentation index 84.

Female head. ( Figs. 188, 189 View FIGURES 188–195 ) Yellow, with only arista, ocellar tubercle and post gena posteriorly black; ov s and iv s on the yellow ground; fronto-orbital plate visible laterally; 2 ors, 2 ori; lunule of medium heigh, narrowing posteriorly, reaching the level between ori a and ori p; 1 st fl of medium size, ovate; gena medially 0.38× as high as maximum height of eye.

Thorax viewed from the side. ( Fig. 191 View FIGURES 188–195 ) Mostly yellow, with kepst in ventral two-thirds, mr ventro-posteriorly and anatg ventro-posteriorly black.

Wing. ( Fig. 190 View FIGURES 188–195 ) Hyaline, with yellowish undertone; with veins brown; costa reaching M 1; last section of CuA 1 2.15× as long as penultimate; calypter yellow, margin wide black, fringe yellowish-grey. Wing length 1.8 mm.

Female genitalia. ( Figs. 193–195 View FIGURES 188–195 ) Spermathecae relatively large, 0.27–0.33× as high as anterior part of oviscape. Proctiger generally cylindrical, weakly sclerotized in anterior half except sternite 10; pair of long setae located on the posterior margin between cerci. Cercus angulate, 0.26× as long as proctiger; medium setae located laterally and subapically, brush of short thin setae located apically. Spermathecae unequal in size, brown, ovate, with narrow plate-shaped basal collar. Neck of spermatheca distinctly narrower than spermathecal base. Spermathecal duct weakly sclerotized; slightly wrinkled; slightly swollen near the neck of spermatheca.

Distribution. Belgium, Great Britain, the Czech Republic, Denmark, Finland, France, Germany, Hungary, Italy, Lithuania, Slovakia, Poland, Russia, Sweden, Switzerland, North Korea ( Papp & Černý 2017). Ukraine (first record).