Amauromyza (Cephalomyza) verbasci (Bouchér)

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 : 20

Amauromyza (Cephalomyza) verbasci (Bouchér)

( Figs. 33–36 , 169–175 )

Material examined. Ukraine: Transcarpathia: Nova Stuzhytsa, 49°2'8"N, 22°34'39"E, 9–10.vii.2019 —pupation outside the mine, 24.viii.2019 —imago, Yu. Guglya, ex Verbascum nigrum (2♂ 2♀ 3 puparia); Kyiv Region: Kyiv, Irpin, 50°30'42"N, 30°15'40"E, 21.vii.2019 —pupation outside the mine, Yu. Guglya, ex Verbascum nigrum (1♂ 2 puparia); Kyiv, Lysa Hora location, 50°23'42"N, 30°32'53"E, vi.2019 —pupation outside the mine, A. Gumovski, ex Scrophularia nodosa (1 puparium); S Rzhyshchiv, 49°56'07"N, 31°02'50"E, 26.vi.2021 —pupation outside the mine, 2.ix.2021 —imago, Yu. Guglya, ex Scrophularia nodosa (1♂); Kharkiv Region: near Petrivske, 49°10'N, 36°58'E, 9.vi.2020 —pupation outside the mine, 29.vi.2020 —imago, Yu. Guglya, ex Verbascum densiflorum (1♀); same locality, 18.vi.2019 —pupation outside the mine, 8.viii.2019 —imago, Yu. Guglya, ex Verbascum densiflorum (1♀); same locality, 18.vi.2019 —pupation outside the mine, 20–23.viii.2019 —imago, Yu. Guglya, ex Verbascum densiflorum (3♀ 1 puparium); same locality, 29.vi.2020 —pupation outside the mine, 3.ix.2020 —imago, Yu. Guglya, ex Verbascum densiflorum (1♂ 1 puparium); same locality, 10.vi.2020 —pupation outside the mine, 21.ix.2020 —imago, Yu. Guglya, ex Verbascum densiflorum (1♀); same locality, 2.vii.2012 —pupation outside the mine, Yu. Guglya, ex Verbascum densiflorum (4 puparia); Stara Pokrovka, 49°48'N, 36°32'E, 20.vi.2012 — pupation outside the mine, Yu. Guglya, ex Verbascum densiflorum (1 puparium); near Rubizhne, 50°06'N, 36°46'E, 19.vii.2020 —dead larvae found inside the mine, Yu. Guglya, ex Scrophularia nodosa (3 larvae).

Hosts. Scrophulariaceae : Buddleja Houst. ex L., Scrophularia Turn. ex L., Verbascum L. ( Benavent-Corai et al. 2005).

Mine. The solitary larva forms a white linear-blotch mine ( Fig. 33 ), which the initial linear portion is sometimes obscured by the later blotch mine ( Fig. 34 ); on the upper leaf surface. Pupation takes place outside the mine in a soil.

Puparium. ( Figs. 35, 36 ) Dark orange, glossy, 3.2–3.5 mm long, with deep segmentation; surface quite smooth, glossy. Posterior spiracles brown, set on conical strongly separated protuberances; with four hook-like sessile bulbs set in a circular configuration. Anal plate protruding above the surface of the puparium viewed from the side; directed ventro-posteriorly.

Cephalopharingeal skeleton. ( Fig. 172 ) Right mouthhook larger dorsally than the left, both with ventro-anterior portion acute and abducted ventrally. Both mouthhooks bear two accessory teeth; all are long, sharp, uniformly curved ventrally. Parastomal bar narrow, long, 0.65× as long as length of intermediate sclerite. Mouthhooks and anterior ventral half of intermediate sclerite are strongly sclerotized, the remain of intermediate sclerite, parastomal bar and dorsal and ventral cornua much soles sclerotized. Intermediate sclerite straight, dramatically widening in posterior third. Indentation index 90.

Female head. ( Figs. 169, 170 ) Orange, with post gena brown, o vt s on brown ground, and i vt s between orange and brown; fronto-orbital plate visible laterally; 3 ors, 3 ori; 1 st fl small, round, covered by thick yellow pubescence directed anteriorly. Gena wider at rear, in widest part 0.3× as wide as maximum height of eye. Vibrissa short, straight, directed ventro-anteriorly, 0.27× as long as maximum height of eye.

Wing. ( Fig. 171 ) Hyaline, with yellow undertone, with beige veins; costa reaching M 1; last section of CuA 1 2.6× as long as penultimate; calypter and margin yellow, fringe black. Wing length 3.5 mm.

Female genitalia. ( Figs. 173–175 ) Spermathecae of medium size, 0.22× as high as anterior part of oviscape. Proctiger narrow and long, generally cylindrical, gradually widening posteriorly. Several long and medium setae located along posterior margin separately. Cercus oval, 0.15× as long as length of proctiger; patches of long and medium setae located internalaterally and apically. Spermathecae equal in size, brown, highly asymmetrical, drop-shaped, slightly wider than high and flattened basally. Internal duct invagination 0.45× as deep as height of spermatheca, shifted to the narrow part of spermatheca. Spermathecal duct dramatically widening near capsule of spermatheca; weakly sclerotized but distinctly wrinkled.

Distribution. European species which is reported from Great Britain to Romania and Moldova and from Spain and Italy to Sweden ( Papp & Černý 2016). Ukraine (first record).

Figures

FIGURES 33–40. Figures 33–36: Amauromyza (Cephalomyza) verbasci (Bouchér); 33: mine in Scrophularia nodosa leaf; 34: mine in Verbascum densiflorum leaf; 35: puparium viewed from the side; 36: posterior segments of puparium (posterior view). Figure 37: Cerodontha (Poemyza) incisa (Meigen) mines in Zea mays leaves. Figures 38–40: Chromatomyia primulae (Robineau-Desvoidy); 38: mine in Primula sp. leaf; 39: empty puparium viewed from the side; 40: posterior segments of puparium (posterior view).

FIGURES 169–175. Amauromyza (C.) verbasci (Bouché); 169: frontal view of head; 170: head viewed from the side; 171: wing; 172: cephalopharingeal skeleton; 173: oviscape and spermathecae proportionally; 174: spermatheca; 175: proctiger.