Liriomyza hieracii (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 : 54

Liriomyza hieracii (Kaltenbach)

( Figs. 159–162 , 493–498 )

Material examined: Ukraine: Transcarpathia: Nova Stuzhytsa, Uzhanskyi National Park , 49°02’N, 22°34’E, 6.vii.2019, Yu. Guglya (1♂ 1♀) ; Vinnytsa Region: near Demivka , 48°10’51”N, 29°34’26”E, 10.v.2019, Yu. Guglya (1♂) ; Kharkiv Region: near Rubizhne , 50°07’N, 36°46’E, 2, 5.viii.2020, Yu. Guglya, ex Pilosella officinarum (1♂ 3♀) .

Hosts. Asteraceae : Hieracium lachenalii C. C. Gmel. , H. laevigatum Willd. , H. murorum L., H. sparsum Friv. ( Papp & Černý 2017) . Pilosella officinarum Vaill. —a newly recorded host plant.

Mine. ( Fig. 159 ) The solitary larva forms a yellowish and brown blotch leaf mine. Pupation takes place outside the mine.

Puparium. ( Figs. 160–162 ) Yellow, translucent, glossy, 2.2 mm long, with distinct segmentation; surface quite smooth except for narrow spine bands. Posterior spiracles set on stout conical protuberances that are entirely separate; brown, with numerous minute sessile bulbs in an 8-shaped arrangement. Anal plate brown, not protruding above the surface of the puparium viewed from the side and directed ventrally.

Cephalopharyngeal skeleton. ( Fig. 493 ) Right mouthhook larger than the left, each with rounded abducted portion directed ventrally and bearing two accessory teeth. Intermediate sclerite massive, 1.07× as long as maximum height of left mouthhook. The mouthhook and the intermediate sclerite ventro-anteriorly are strongly sclerotized, the rest of the sclerites much less so. Indentation index 91.

Female head. ( Figs. 494, 495 ) Head bright yellow to orange, with only arista, oc tr and postgena posteriorly black; orbit not projecting above eye in profile, 2 orb s, 2 fr s and lunule of medium height, narrowing posteriorly, reaching the level of the anterior fr s; pped large, rounded; gena medially 0.28× as high as maximum height of eye.

Thorax viewed from the side. ( Fig. 496 ) Mostly bright yellow, with kepst in ventral two-thirds black; pprn dorsally, anepist medially, anepm medially and mr ventro-posteriorly are blackish. Calypter ditry-yellow, with margin and fringe black.

Female genitalia. ( Figs. 497, 498 ) Capsule of spermatheca relatively small, 0.16× as high as height of anterior part of oviscape. Spermathecae equal in size, dark brown, spherical, flattened basally, with wide, plate-shaped basal collar. Neck of spermatheca 0.5× as wide as width of spermathecal duct. Spermathecal duct weakly sclerotized.

Distribution. European species recorded from Bulgaria, British Isles, the Czech Republic, Finland, France, Germany, Greece, Hungary, Lithuania, the Netherlands, Norway, Poland, Slovakia, Sweden and Switzerland ( Papp & Černý 2017). Ukraine (first record).

Figures

FIGURES 159–167. Figures 159–162: Liriomyza hieracii (Kaltenbach); 159: mines in Pilosella officinarum leaf; 160–161: posterior segments of puparium; 160: lateral view; 161: posterior view. 162: posterior spiracles (posterior view). Figures 163– 167: L. tragopogonis de Meijere; 163: mine in Tragopogon podolicus leaf; 164: puparium in stem of T. podolicus; 165–166: posterior segments of puparium; 165: lateral view; 166: posterior view. 167: posterior spiracles (posterior view).

FIGURES 493–498. Liriomyza hieracii (Kaltenbach); 493: cephalopharyngeal skeleton; 494: frontal view of head; 495: head viewed from the side; 496: thorax viewed from the side; 497: oviscape and spermathecae proportionally; 498: spermatheca.