Agromyza dipsaci Hendel

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 : 6

Agromyza dipsaci Hendel

( Figs. 3–6 , 100–106 )

Material examined. Ukraine: Kharkiv Region: Kharkiv, City Center , Botanical Garden , 50°01'N, 36°14'E, 11.vi.2020 —pupation outside the mine, x.2021 —dead imago found inside the puparia, Yu. Guglya, ex Dipsacus pilosus (1♂, 1♀ 2 puparia); Donetsk Region: Kryva Luka, 48°52'34"N, 37°54'37"E, 04.vi.2019 —pupation outside the mine, x.2019 —dead imago found inside the puparia, Yu. Guglya, ex Dipsacus pilosus (1♀ 2 puparia) .

Hosts. Dipsacaceae : Dipsacus fullonum L. ( Spencer 1972). Dipsacus pilosus L.—a newly recorded host plant.

Mine. ( Fig. 3 ) The solitary larva develops in a greenish-brown blotch mine along the margin of the leaf. Pupation takes place outside the mine in the soil.

Puparium. ( Figs. 4–6 ) Brown, matt, 3.3 mm, with shallow but distinct segmentation; surface dorsally and ventrally uniformly covered with numerous fine brown spines; several irregular rows of the same spines located along junctures of segments laterally. Posterior spiracles set on dark yellow short stout conical protuberances; yellowish-brown, with 8 minute spherical sessile bulbs in a circular configuration. Ventral portion of last abdominal segment not protruding posteriorly viewed from the side. Anal plate brown and directed ventro-posteriorly.

Cephalopharingeal skeleton. ( Fig. 101 ) Right mouthhook slightly larger dorsally than the left, both with ventro-anterior portion distinctly abducted. Both mouthhooks bear two long sharp accessory teeth uniformly curved ventrally. Mouthhooks and intermediate sclerite are strongly sclerotized, dorsal cornua and ventral cornu much less so. Indentation index 83.

Male genitalia. ( Figs. 102–104 ) Only lateral and ventral views of the phallus are depicted in Spencer (1990: figs 913, 914). Other structures are illustrated here. Epandrium is hemispherical. Cercus narrow, elongated with slightly curved anteriorly apical parts. Surstilus elongated with field of numerous prensisetae. Hypandrium is V-shaped with narrow arms. Postgonites massive, with egg-shaped apical half. Ejaculatory apodeme small, with triangular blade. Sperm sac relatively large, drop-shaped, in equal size with blade.

Female head. ( Fig. 100 ) Black; fronto-orbital plate visible laterally; 2 ors, 2 ori; lunule of medium height, flattened posteriorly, not reaching the level of the ori a; 1 st fl small. Other features discussed in Spencer (1972) and Papp & Černý (2015).

Female genitalia. ( Figs. 105, 106 ) Capsule of spermatheca is relatively of medium size, 0.4–0.5× as high as anterior part of oviscape. Spermathecae not equal in size, brown, oval, without basal collar. Spermathecal duct is very weakly sclerotized.

Distribution. Rare European species recorded from Austria, Czech Republic, France, Germany, Great Britain, Slovakia, presumably Hungary ( Papp & Černý 2015), Sweeden ( Lonsdale 2021). Ukraine (first record).

Figures

FIGURES 1–7. Figures 1, 2: Agromyza abiens Zetterstedt; 1: mine in Cerinthe minor leaf; 2: numerous mines in Echium vulgaris leaves. Figures 3–6: Agromyza dipsaci Hendel; 3: mine in Dipsacus pilosus leaf; 4: puparium viewed from the side; 5: posterior segments of puparium (posterior view); 6: posterior spiracles (posterior view). Figure 7: numerous mines of Amauromyza (Amauromyza) carlinae (Hering) in Carlina biebersteini leaves.

FIGURES 100–106. Agromyza dipsaci Hendel; 100: head viewed from the side; 101: cephalopharingeal skeleton; 102: epandrium; 103: hypandrium; 104: male genitalia proportionally viewed from the side; 105: oviscape and spermathecae proportionally; 106: spermathecae.