Liriomyza heringi 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 : 52-54

Liriomyza heringi Nowakowski

( Figs. 155–158 , 487–492 )

Material examined: Ukraine: Kyiv Region: Kyiv , location “Lysa Hora”, 50°23’N, 30°32’E, 9–10.viii.2019, Yu. Guglya, ex Centaurea jacea (6♂ 4♀) ; Kyiv, Trukhaniv Island , 50°28’14”N, 30°32’52”E, 10.viii.2019, Yu. Guglya, ex Euphorbia e sula (1♂ 1♀) ; Kharkiv Region: near Haidary, The National Nature Park “Homilshanski Lisy”, 49°37’N, 36°19’E, 26–27.vi.2011, Yu. Guglya, ex Euphorbia esula L. (4♂) ; near Petrivske , 49°10’N, 36°58’E, 17.vi.2019, Yu. Guglya, ex Euphorbia esula L. (1♂) ; same locality, 16.vii.2020, Yu. Guglya, ex Euphorbia esula (1♀) ; near Rubizhne 50°06’N, 36°46’E, 5.viii.2020, Yu. Guglya, ex Euphorbia esula L. (3♂ 4♀) .

Hosts. Euphorbiaceae : Euphorbia L. ( Benavent-Corai et al. 2005). Asteraceae : Centaurea jacea L.—a newly recorded host plant.

Mine. ( Fig. 155 ) On Euphorbia , an upper surface blotch containing one to several larvae; on Centaurea jacea the larva is solitary and forms a linear mine. Pupation takes place outside the mine, in the soil.

Puparium. ( Figs. 156–158 ) Yellow, translucent, glossy, 2.4 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 a kidney-shaped arrangement. Anal plate brown, not protruding above the surface of the puparium viewed from the side and directed ventro-posteriorly.

Cephalopharyngeal skeleton. ( Fig. 487 ) Right mouthhook larger than the left, each with sharp abducted portion ventrally and bearing two accessory teeth. Intermediate sclerite massive, 1.04× as long as maximum height of left mouthhook. The mouthhook, the intermediate sclerite centrally and anterior portion of the pharyngeal sclerite are strongly sclerotized; the intermediate sclerite dorso-anteriorly and ventro-posteriorly and the dorsal and ventral cornua are much less so. Indentation index 90. See also in Nowakowski (1961: Fig. 4 a, b ).

Female head. ( Figs. 488, 489 ) Bright yellow, with arista darkened and oc tr black; orbit slightly projecting above eye in profile; 2 orb s, 2 fr s; lunule low, narrow, semicircular, reaching the level of the anterior fr s; pped small, rounded; gena medially 0.2× as high as maximum height of eye.

Thorax viewed from the side. ( Fig. 490 ) Mostly bright yellow, with kepst in ventral two-thirds, mr ventro-posteriorly and anatg black; anepist ventrally, anepm medially and mtkepst posteriorly bear elongated blackish spots. Calypter dirty-yellow, with dark margin and yellow fringe. Cx 2 and cx 3 blackish-yellow proximally.

Female genitalia. ( Figs. 491, 492 ) Capsule of spermatheca relatively small, 0.14× as high as height of anterior part of oviscape. Proctiger relatively wide, 2.56× as long as the maximum width, cylindrical, with narrow and sharply abducted anterior portion; cercus stout, slightly curved medially. Spermathecae equal in size, brown, spherical, sometimes invaginated laterally, with narrow rim-shaped basal collar. Spermathecal duct wide, weakly sclerotized, bent at an angle of 90° near base of spermatheca and strongly narrowed between spermatheca and the bend.

Distribution. Lithuania, Romania, the Republic Moldova ( Pape 2014). Ukraine (first record).

Comments. Hitherto this species was known as a blotch-miner on Euphorbia ( Nowakowski 1961b) . It was unexpected to rear it from another type of mine on a plant of another order, but comparison of male and female genitalia of specimens reared from Centaurea and Euphorbia showed that they are completely identical in shape and size. The specimens are also identical externally. Comparison of puparia and the cephalopharyngeal skeleton gave the same result.

Figures

FIGURES 150–158. Figures 150–154: L. pusilla (Meigen); 150–151: mines; 150: “f. eupatorii” in Centaurea jacea leaf; 151: “f. pusilla” in Galeopsis bifida leaf. 152–153: posterior segments of puparium; 152: lateral view; 153: posterior view. 154: posterior spiracles (posterior view). Figures 155–158: Liriomyza heringi Nowakowski; 155: mine in Euphorbia esula leaf; 156–157: posterior segments of puparium; 156: lateral view; 157: posterior view. 158: posterior spiracles (posterior view).

FIGURES 487–492. Liriomyza heringi Nowakowski; 487: cephalopharyngeal skeleton; 488: frontal view of head; 489: head viewed from the side; 490: thorax viewed from the side; 491: oviscape and spermatheca proportionally; 492 a–b: spermatheca and proctiger proportionally; a: spermatheca; b: proctiger.

FIGURES 1–8. Figures 1–4: Agromyza abiens Zetterstedt; 1: mine in Cynoglossum officinale leaf; 2–3: posterior segments of puparium; 2: lateral view; 3: posterior view. 4: posterior spiracles (posterior view). Figures 5–8: A. albipennis Meigen; 5: mine with larva (indicated by arrow) in Elymus repens leaf; 6–7: posterior segments of puparium; 6: lateral view; 7: posterior view. 8: posterior spiracles (posterior view).