Phytomyza spinaciae Hendel

Guglya, Yuliia, 2021, Rearing mining flies (Diptera: Agromyzidae) from host plants as an instrument for associating females with males, with the description of seven new species, Zootaxa 5014 (1), pp. 1-158 : 87

Phytomyza spinaciae Hendel

( Figs. 274–277 , 657–661 )

Material examined: Ukraine: Kharkiv Region: near Petrivske , 49°10’N, 36°58’E, 28–30.vi.2011, Yu. Guglya, ex Carduus crispus (3♂ 2♀) .

Hosts. Asteraceae : Carduus L., Centaurea L., Leontodon L., Onopordum L., Serratula L. ( Benavent-Corai et al. 2005), Cirsium Mill. , Cnicus L. ( Warrington 2021).

Mine. ( Figs. 274 ) The larva forms a yellow linear steadily widening upper surface leaf mine. The larva moves to the underside of the leaf before pupation and pupates there subepidermally ( Fig. 275 ).

Puparium. ( Figs. 276, 277 ) Milky-white, opaque, 2.5 mm long, with deep segmentation; surface quite smooth. Posterior spiracles set on wide conical protuberances that are entirely separate; yellow and matt. Anal plate white, distinctly protruding above the surface of the puparium viewed from the side and directed posteriorly.

Cephalopharyngeal skeleton. ( Fig. 657 ) Right mouthhook much higher than the left, each bearing two accessory teeth. Intermediate sclerite long and narrow, with small, sharp protuberance located ventrally; sclerite 1.83× as long as maximum height of left mouthhook. The mouthhook and the intermediate sclerite are strongly sclerotized and the pharyngeal sclerite is much less so. The ventral cornu bears a narrow “closed” window located centrally. Indentation index 82.

Female head. ( Figs. 658, 659 ) Yellow, with antenna, postgena and palpus black, frons yellowish-rose; orbit not projecting above eye in profile; 1 orb s, 2 fr s; lunule low, broad, semicircular, reaching the level of the posterior fr s; pped of medium size, flattened apically; gena medially 0.23× as high as maximum height of eye.

Female genitalia. ( Figs. 660, 661 ) Capsule of spermatheca relatively very small, 0.1× as high as height of anterior part of oviscape. Spermathecae equal in size, brown, spherical. Spermathecal duct weakly sclerotized. Ventral receptacle S-shaped, with well sclerotized tail that widens basally. Body of receptacle stout, with very short basal connecting tube, well sclerotized, 1.45× as wide as capsule of spermatheca; with opening as wide as diameter of spherical part of body.

Distribution. Belgium, British Isles, the Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Italy, Latvia, Lithuania, Norway, Slovakia, Spain, Sweden ( Papp & Černý 2019). Ukraine (first record).

Figures

FIGURES 270–277. Figures 270–273: Phytomyza senecionis Kaltenbach; 270: mine with exit slit (indicated by arrow) in Senecio nemorensis leaf; 271: empty puparium viewed from the side; 272: posterior segments of puparium (posterior view); 273: posterior spiracles (posterior view). Figures 274–277: P. spinaciae Hendel; 274: mine with larva (indicated by arrow) in Carduus crispus leaf; 275: puparium (indicated by arrow) on lower leaf surface; 276: posterior segments of puparium (lateral view); 277: posterior spiracles (posterior view).

FIGURES 657–661. Phytomyza spinaciae Hendel; 657: cephalopharyngeal skeleton; 658: frontal view of head; 659: head viewed from the side; 660: oviscape, ventral receptacle and spermatheca proportionally; 661: ventral receptacle.