Liriomyza galiivora (Spencer)

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 : 27-28

Liriomyza galiivora (Spencer)

( Figs. 47–50 , 204–210 )

Material examined. Ukraine: Volyn Region: near Shatsk , 51°28'28"N, 23°48'27"E, 23.v.2019, Yu.Guglya (1♂) ; Transcarpathia: Uzhhorod, Botanical Garden , 48°37'N, 22°18'E, 4.vii.2019, Yu. Guglya (3♂ 1♀) ; near Nevytske , 48°41'N, 22°24'E, 17.vii.2017, Yu. Guglya (1♀) ; 1 km E Rakhiv Center , 830 m a.s.l., 48°03'N, 24°13'E, 21vii.2017, Yu. Guglya (1♀) ; 1 km SEE Rakhiv , 730 m a.s.l., 48°03'N, 24°13'E, 22.vii.2017, Yu. Guglya (1♂) ; Vinnytsa Region: near Dochno , 48°16’N, 29°18’E, 2.vii.2019, Yu. Guglya (1♂) ; K yiv Region: Rzhyshchiv , deciduous forest, 49°58'25"N, 31°06'20"E, 23.vii.2021 —pupation outside the mine, 4.viii.2021 —imago, Yu. Guglya, ex Galium odoratum (1♂ 3 puparia) ; Rzhyshchiv , 49º57'41"N, 31º07'34"E, 23.vii.2021, Yu. Guglya (1♀) ; S Rzhyshchiv , 49º56'13"N, 31º02'46"E, 20.vii.2021, Yu. Guglya (1♀) ; Kharkiv Region: near Petrivske , 49°10'N, 36°58'E, 7.vi.2020, Yu. Guglya (1♀) ; near Rubizhne , 50°07'N, 36°46'E, 19.vii.2014, Yu. Guglya (2♂) .

Hosts. Rubiaceae : Galium boreale L., G. triflorum Michx. , G. rubioides (syn. broterianum Boiss & Reut. , valantioides M. Bieb. , G. verum L. and G. boreale L.), G. rotundifolium L. ( Spencer 1969), G. asprellum Michx. , circaezans Michx. Diodia virginiana L. ( Eiseman & Lonsdale 2018), Galium odoratum (L.) Scop.—a newly recorded host plant.

Mine. ( Fig. 47 ) The solitary larva forms a white upper surface linear leaf mine. Pupation takes place outside the mine.

Puparium. ( Figs. 49, 50 ) Bright yellow, glossy, with brown posterior spiracles, 1.8–2.0 mm long, with distinct segmentation; surface quite smooth. Posterior spiracles 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; directed ventrally. Two round ventral tubercles developed between the anal plate and posterior spiracles viewed from the side and posteriorly.

Cephalopharingeal skeleton. ( Fig. 207a, b ) Mouthhooks equal in size, with ventro-anterior portion wide; right rounded and abducted anteriorly, left flattened and abducted ventro-anteriorly. Both mouthhooks bear two rather large accessory teeth; left ventral tooth is less acute. Mouthhooks and intermediate sclerite are strongly sclerotized, dorsal and ventral cornua much less so. Intermediate sclerite convex dorsally. Indentation index 89.

Female head. ( Figs. 204, 205 ) Yellowish-brown, with contrasting yellow 1 st fl; fronto-orbital plate not visible laterally (as in Fig. 48 ); 2 ors, 2–3 ori (ocasionaly slender ori a present); 1 st fl of medium size, round. Gena wider at rear, in widest part 0.33× as wide as maximum height of eye. Vibrissa slender, 0.28× as long as maximum height of eye.

Wing. ( Fig. 206 ) Hyaline, with pale beige undertone; with brown veins; costa reaching M 1; last section of CuA 1 2.25× as long as penultimate; calypter, margin and fringe grey. Wing length 2.0 mm.

Female genitalia. ( Figs. 207–209 ) Spermathecae relatively large, 0.27× as high as anterior part of oviscape. Proctiger generally cylindrical, gradually widening posteriorly; pair of long setae located on the posterior margin between cerci. Cercus oval, 0.36× as long as proctiger; medium setae located laterally and subapically, brush of short thin setae located apically. Spermathecae equal in size, brown, spherical, with narrow rim-shaped basal collar. Spermathecal duct weakly sclerotized; slightly wrinkled; swollen near the capsule of spermatheca.

Distribution. Belgium, Czech Republic, France ( Corsica), Germany, Greece, Hungary, Italy, Lithuania, Poland, Slovakia and Switzerland ( Papp & Černý 2017), Canada, USA ( Lonsdale 2021). Ukraine (first record).

Comments. Spencer (1969) provide Galium rubioides without species authorship as a host of Praspedomyza galiivora sp.n. which later was transferred to the genus Liriomyza Mik by Lonsdale (2017).According POWO (2019) G. rubioides L. is a valid species, G. rubioides Brot is a synonym of G. broterianum Boiss & Reut. , G. rubioides Pollich ia a synonym of G. valantioides M.Bieb. , G. rubioides Suter is a synonym of G. verum L. and finally G. rubioides Willd. ex Ledeb is a synonym of G. boreale L. So , it’s hard to say what species of host exactly meant Kennet A.Spencer.

Figures

FIGURES 47–54. Figures 47–50: Liriomyza galiivora (Spencer); 47: mine in Galium odoratum leaf; 48: female viewed from the side; 49: empty puparium viewed from the side; 50: posterior segments of puparium (posterior view). Figures 51–54: Phytomyza aconiti Hendel; 51: empty communal mine in Aconitum sp. leaf; 52: communal mine in Aconitum sp. leaf with larvae; 53: empty puparium viewed from the side; 54: posterior segments of puparium (posterior view).

FIGURES 204–210. Liriomyza galiivora (Spencer); 204: frontal view of head; 205: head viewed from the side; 206: wing; 207 a, b: cephalopharingeal skeleton; a: total viewed from the side; b: right mouthhook; 208: oviscape and spermathecae proportionally; 209: spermathecae; 210: proctiger.