Phytomyza senecionis Kaltenbach

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 : 85-87

Phytomyza senecionis Kaltenbach

( Figs. 270–273 , 652–656 )

Material examined: Ukraine: Transcarpathia: near Lubnya, Uzhanskyi National Park, 49°00’N, 22°43’E, 23.vi.2019, Yu. Guglya, ex Senecio nemorensis (1♀ 3puparia); “Peremychka”, the Carpathian Biosphere Reserve, 1530 m a. s. l., 48°09’34”N, 24°28’06”E, 16.viii.2019, Yu. Guglya, ex Senecio nemorensis (1 puparium).

Hosts. Asteraceae : Senecio spp. ( Spencer 1990) .

Mine. ( Fig. 270 ) The larva forms a white linear steadily widening upper surface mine along the leaf veins. Pupation takes place outside the mine.

Puparium. ( Figs. 271–273 ) Black, semi-glossy, 2.0 mm long, with distinct but shallow segmentation; surface finely wrinkled except for narrow bands of fine spines. Posterior spiracles set on wide cylindrical protuberances that are entirely separate; with 20 sessile bulbs arranged in an irregular open ellipse. Ventral portion of last abdominal segment distinctly protruding posteriorly viewed from the side. Anal plate directed ventro-posteriorly.

Cephalopharyngeal skeleton. ( Fig. 652 ) Right mouthhook much larger than the left, each bearing two accessory teeth. Intermediate sclerite long and narrow, with small, sharp protuberance located ventrally; sclerite 1.82× as long as maximum height of left mouthhook. The mouthhook, the intermediate sclerite and the pharyngeal sclerite anteriorly are strongly sclerotized; the dorsal and ventral cornua are much less so. The ventral cornu bears an oval “closed” window located in the posterior half. Indentation index 84. See also P. senecionis ravasternopleuralis Sasakawa in Sasakawa (1961: Fig. 144 l ).

Female head. ( Figs. 653, 654 ) Yellow, with only antenna, oc tr and postgena posteriorly black; orbit not projecting above eye in profile; 1–2 orb s, 2 fr s; lunule of medium height, broad, flattened posteriorly, reaching the level of the posterior fr s; pped of medium size, flattened apically; gena medially 0.3× as high as maximum height of eye.

Female genitalia. ( Figs. 655, 656 ) Capsule of spermatheca medium-sized, 0.25× as high as height of anterior part of oviscape. Spermathecae unequal in size, brown, flattened and concave basally and apically, wider than high. Internal duct invagination cylindrical, 0.85× as deep as maximum height of spermatheca. Spermathecal duct weakly sclerotized. Ventral receptacle S-shaped, with well sclerotized tail that is bowl-shaped basally. Body of receptacle spherical with slightly curved basal connecting tube, strongly sclerotized, 0.72× as wide as capsule of the smallest spermatheca; with opening located on narrow projection, 0.58× as wide as diameter of spherical part of body. Proctiger see P. senecionis ravasternopleuralis Sasakawa in Sasakawa (1961: Fig. 144 h ).

Distribution. Austria, Belgium, Bulgaria, the Czech Republic, Denmark, Germany, Hungary, Poland, Slovakia, the Netherlands, Switzerland ( 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 652–656. Phytomyza senecionis Kaltenbach; 652: cephalopharyngeal skeleton; 653: frontal view of head; 654: head viewed from the side; 655: oviscape, ventral receptacle and spermathecae proportionally; 656 a–b: spermatheca and ventral receptacle proportionally; a: spermathecae; b: ventral receptacle.

FIGURES 138–149. Figures 138–142: Liriomyza bryoniae (Kaltenbach); 138–139: mines in Gypsophyla paniculata: 138: leaf and stem (indicated by arrow); 139: in leaf. 140–141: posterior segments of puparium; 140: lateral view; 141: posterior view. 142: posterior spiracles (posterior view). Figures 143–146: L. cicerina (Rondani); 143: mines in Cicer arietinum leaf; 144–145: posterior segments of puparium; 144: lateral view; 145: posterior view. 146: posterior spiracles (posterior view). Figures 147–149: L. congesta (Becker); 147–148: posterior segments of puparium; 147: lateral view; 148: posterior view. 149: posterior spiracles (posterior view).