Liriomyza endiviae Hering

Guglya, Yuliia, 2025, Rearing mining flies (Diptera: Agromyzidae) from host plants as an instrument for associating females with males, with the description of two new species. Report 2, Zootaxa 5658 (1), pp. 1-86 : 25-27

Liriomyza endiviae Hering

( Figs. 44–46 , 196–203 )

Material examined. Ukraine: Kyiv Region: near Rzhyshchiv , ecostation “Hlyboki Balyky”, 49°57'44"N, 31°07'08"E, 24.vi.2021 —pupation outside the mine, 5.vii.2021 —imago, Yu. Guglya, ex Lapsana communis (1♂ 2♀) ; Kharkiv Region: Kharkiv, Velyka Danylivka , 50°2'43"N, 36°19'54"E, 19.vi.2020 —pupation outside the mine, 1.vii.2020 —imago, Yu. Guglya, ex Sonchus oleraceus (1♂ 2♀) ; near Mokhnach , 49°44'N 36°32'E, 11.vi.2023 — pupation outside the mine, 26–30.vi.2023 —imago, Yu. Guglya, ex Lapsana communis (1♂ 2♀) ; near Petrivske , 49°10'N, 36°58'E, 29.vi–4.vii.2020 —pupation outside the mine, 9 and 11.vii.2020 —imago, Yu. Guglya, ex Lactuca serriola (2♂ 1♀) .

Hosts. Asteraceae : Cichorium intybus L., Crepis biennis L., C. capillaris (L.) Wallr., C. paludosa (L.) Moench, Lactuca virosa L., Sonchus arvensis L., S. asper (L.) Hill, S. oleraceus L. ( Papp & Černý 2017). Lapsana communis L. ( Guglya 2023).

Mine. ( Fig. 44 ) The solitary larva forms a greenish-white upper surface blotch leaf mine. Pupation takes place outside the mine.

Puparium. ( Figs. 45, 46 ) Yellow, glossy, 2.0 mm long, with distinct segmentation; surface quite smooth. Posterior spiracles brown, set on yellow conical protuberances entirely strongly separate; 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 and directed ventrally. Two small conical appendages developed on the sides of the anal plate viewed from the side and posteriorly.

Cephalopharingeal skeleton. ( Fig. 200 ) Right mouthhook larger dorsally than the left, both with ventro-anterior portion acute and abducted ventro-anteriorly. Both mouthhooks bear two large accessory teeth; dorsal are sharp, uniformly curved ventrally; ventral are blunt. Mouthhooks are strongly sclerotized; intermediate sclerite, dorsal and ventral cornua much less so. Intermediate sclerite straight and wide, gradually narrowing posteriorly. Dorsal cornu slightly wider than ventral ones; ventral cornu bears a long “closed” window posteriorly. Indentation index 95.

Female head. ( Figs. 196, 197 ) Yellow, with only arista, ocellar tubercle and post gena dorsally black; iv s on the yellow ground, ov s between yellow and black; fronto-orbital plate visible laterally; 2 ors, 2 ori; lunule rather high, narrowing posteriorly, reaching the level between ori a and ori p; 1 st fl of medium size, spherical; gena medially 0.26× as high as maximum height of eye.

Thorax viewed from the side. ( Fig. 199 ) Moustly yellow, with kepst in ventral two-thirds, mr medially black; pprn dorsally, anepist in anterior half, anepm medially bear elongated blackish spots.

Wing. ( Fig. 198 ) Hyaline, with pale grey undertone; with beige veins; costa reaching M 1; last section of CuA 1 2.16× as long as penultimate; calypter yellowish-grey, margin black and fringe grey. Wing length 1.8 mm.

Female genitalia. ( Figs. 201–203 ) Spermathecae relatively large, 0.27× as high as anterior part of oviscape. Proctiger with relatively short and wide posterior two-half; dramatically narrowing anteriorly; two pairs of medium setae located on the posterior margin between cerci; addition several pairs of short and medium setae located along posterior margin. Cercus wide, oval, 0.36× as long as proctiger; medium setae located laterally and subapically, brush of short thin setae located apically. Spermathecae equal, dark brown, spherical, with narrow irregular plate-shaped basal collar. Neck of spermatheca distinctly narrower than spermathecal base. Spermathecal duct weakly sclerotized; distinctly swollen near the neck of spermatheca.

Distribution. The Czech Republic, France, Germany, Greece, Hungary, Lithuania, Malta, Spain, Canada, USA ( Papp & Černý 2017). Ukraine (first record).

Comments. Presence of this species in USA and Canada needs confirmation, beacause only females presumably of this species were collected there. Owen Lonsdale studied American specimens and didn’t include L. endiviae in the list of Agromyzidae of North America ( Lonsdale 2021).

Figures

FIGURES 41–46. Figures 41–43: Liriomyza demejerei Hering; 41: mine in Artemisia vulgaris leaf; 42: empty puparium viewed from the side; 43: posterior segments of puparium (posterior view). Figures 44–46: Liriomyza endiviae Hering; 44: mine in Lapsana communis leaf; 45: empty puparium viewed from the side; 46: posterior segments of puparium (posterior view).

FIGURES 196–203. Liriomyza endiviae Hering; 196: frontal view of head; 197: head viewed from the side; 198: wing; 199: thorax viewed from the side; 200: cephalopharingeal skeleton; 201: oviscape, proctiger and spermathecae proportionally; 202: spermathecae; 203: proctiger.