Phytomyza astrantiae 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 : 31-33

Phytomyza astrantiae Hendel

( Figs. 59–61 , 227–234 )

Material examined. Ukraine: Transcarpathia: 32 km NNE Tiachiv, 48°17'N, 23°43'E, 19.vii.2017, Yu. Guglya (3♂) ; 2.3 km N Kvasy, 48°10'13"N, 24°18'18"E, 17.viii.2021 —pupation outside the mine, Yu. Guglya, ex Astrantia major (1♂ 2 puparia); Ivano-Frankivsk Region: near Zarosliak , 1400 m a. s. l., 48°10'10"N, 24°31'24"E, 19– 22.viii.2021 —pupation outside the mine, 2–9.ix.2021 —imago, Yu. Guglya, ex Astrantia major (9♂ 3♀) .

Hosts. Apiaceae : Astrantia major L. ( Hendel 1924).

Mine. ( Fig. 59 ) Larvae form solitary or gregarious greenish blotch upper surface leaf mines. Pupation takes place outside the mine.

Puparium. ( Figs. 60, 61 ) Blackish-brown, glossy, 2.0 mm long, with distinct but shallow segmentation; surface smooth, except for wide bands of fine spines. Posterior spiracles set on wide cylindrical protuberances that are entirely separate; black, glossy, with 12–17 sessile bulbs arranged in a narrow open ellipse. Anal plate slightly protruding above the surface of the puparium viewed from the side; directed ventrally.

Cephalopharingeal skeleton. ( Fig. 230 ) Right mouthhook larger dorsally than the left, with ventro-anterior portion acute and abducted ventro-anteriorly. Mouthhooks widened ventrally, bearing two finger-shaped teeth. Mouthhooks and intermediate sclerite ventrally and posteriorly are strongly sclerotized; intermediate sclerite dorso-anteriorly and dorsal cornu in anterior third and posterior third weakly so. Indentation index 90.

Female head. ( Figs. 227, 228 ) Dull yellow, ocellar tubercle brown; fronto-orbital plate not visible laterally; 2 ors, 1 ori; posterior ors the smallest, anterior ors the longest, ori of medium length; orbital setulae sparse, elongate, proclinate. Lunule very wide and low, scarcely reaching the level of ori. 1 st fl large, spherical, covered with thick pale pubescence. Gena wider at rear, in widest part 0.43× as wide as maximum height of eye. Vibrissa of medium length, straight, 0.3× as long as maximum height of eye.

Wing. ( Fig. 229 ) Hyaline, with beige veins; costa reaching R 3+4; second cross vein absent; second cross vein absent; calypter pale greyish-beige, margin and fringe black. Wing length 2.1 mm.

Female genitalia. ( Figs. 231–234 ) Spermathecae of medium size, 0.16× as high as height of anterior part of oviscape. Proctiger cylindrical, with two pairs of medium setae located on posterior margin between cerci. Cercus short and broadly rounded, 0.22× as long as proctiger; medium setae located subapically, several short setae located apically. Spermathecae unequal in size, brown, with wrinkled surface, wider than high and flattened basally and apically. Largest spermatheca tapering apically, smallest much less so. Internal duct invagination 0.63–0.69× as deep as height of spermatheca, slightly tapering apically. Spermathecal duct narrow and very weakly sclerotized. Ventral receptacle brown, compressed S-shaped, with weakly sclerotized tail. Body of receptacle spherical, with slightly curved basal connecting tube, strongly sclerotized. Opening located on narrow projection, 0.7× as wide as a diameter of spherical part of body.

Distribution. The Czech Republic, Germany, Great Britain, Poland, Turkey ( Papp & Černý 2019). Ukraine (first record).

Figures

FIGURES 55–61. Figures 55–58: Phytomyza agromyzina Meigen; 55: mines with larvae in Cornus sanguinea leaf; 56: dried empty mines in Cornus sanguinea leaf; 57: empty puparium viewed from the side; 58: posterior segments of puparium (posterior view). Figures 59–61: Phytomyza astrantiae Hendel; 59: mine in Astrantia major leaf; 60: empty puparium viewed from the side; 61: posterior segments of puparium (posterior view).

FIGURES 227–234. Phytomyza astrantiae Hendel; 227: frontal view of head; 228: head viewed from the side; 229: wing; 230: cephalopharingeal skeleton; 231: oviscape, ventral receptacle and spermathecae proportionally; 232: spermathecae; 233: proctiger; 234: ventral receptacle.