Phytomyza lycopi Nowakowski

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 : 71-73

Phytomyza lycopi Nowakowski

( Figs. 211–215 , 588–593 )

Material examined: Ukraine: Kharkiv Region: near Haidary, The National Nature Park “Homilshanski Lisy”, 49°37’N, 36°19’E, 8–18.viii.2020, Yu. Guglya, ex Lycopus europaeus (6♂ 4♀) .

Host. Lamiaceae : Lycopus europaeus L. ( Nowakowski 1959).

Mine. ( Fig. 211 ) The larva forms brown leaf mine that is initially linear, later forming a secondary blotch. The mine can be located apically or marginally. Pupation takes place within the mine on the underside of the leaf ( Fig. 212 ).

Puparium. ( Figs. 213–215 ) Orange, 2.5 mm long, with distinct segmentation; surface quite smooth except for wide bands of fine spines and the last two abdominal segments finely wrinkled. Posterior spiracles set on wide and short conical protuberances that are entirely separate; black, glossy and two-horned. Ventral portion of last abdominal segment distinctly protruding posteriorly viewed from the side. Anal plate orange, distinctly protruding above the surface of the puparium viewed from the side and directed ventro-posteriorly.

Cephalopharyngeal skeleton. ( Fig. 588 ) Right mouthhook much larger than the left, each bearing two strong accessory teeth. Intermediate and pharyngeal sclerites very slender in comparison with mouthhooks. Intermediate sclerite narrow and straight, 1.16× 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 especially the ventral cornu. Indentation index 95.

Female head. ( Figs. 589, 590 ) Brown, with antenna and postgena black; orbit not projecting above eye in profile; 2 orb s, 2 fr s; lunule broad, high, narrowing posteriorly, reaching the level of the posterior fr s; pped of medium size, flattened apically; gena medially 0.15× as high as maximum height of eye.

Female genitalia. ( Figs. 591–593 ) Capsule of spermatheca relatively very small, 0.1× as high as height of anterior part of oviscape. Spermathecae equal in size, dark brown, slightly concave basally and rounded apically, higher than wide. Internal duct invagination widened apically, 0.07× as high as height of spermatheca. Neck of spermatheca cylindrical, strongly sclerotized, 0.15× as high as height of spermatheca. Spermathecal duct weakly sclerotized. Ventral receptacle S-shaped, with weakly sclerotized tail that is two-bladed and widening in basal half. Tail sharply narrowed medially. Body of receptacle flattened cylindrical, with sharply curved basal connecting tube, strongly sclerotized, 2.3× as wide as capsule of spermatheca; with opening equal to the diameter of spherical part of body.

Distribution. Albania, Bulgaria, the Czech Republic, Denmark, Germany, Hungary, Lithuania, Poland, Slovakia ( Papp & Černý 2019). Ukraine (first record).

Figures

FIGURES 211–220. Figures 211–215: Phytomyza lycopi Nowakowski; 211: mine in Lycopus europaeus leaf; 212: puparium (indicated by arrow) in mine; 213: empty puparium (lateral view); 214: posterior segments of puparium (posterior view); 215: posterior spiracles (posterior view). Figures 216–220: P. medicaginis Hendel; 216–217: mines in Pulmonaria mollis leaf; 216: initial mine with feeding larva (indicated by arrow); 217: fully developed; 218: empty puparium viewed from the side; 219: posterior segments of puparium (posterior view); 220: posterior spiracles (posterior view).

FIGURES 588–593. Phytomyza lycopi Nowakowski; 588: cephalopharyngeal skeleton; 589: frontal view of head; 590: head viewed from the side; 591: oviscape, ventral receptacle and spermathecae proportionally; 592: spermatheca; 593: ventral receptacle.