Aulagromyza populi (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 : 27-29

Aulagromyza populi (Kaltenbach)

( Figs. 71–74 , 377–382 )

Material examined: Ukraine: Kharkiv Region: Kharkiv, City Centre , 50°00’N, 36°14’E, 15.iii.2020, Yu. Guglya, ex Populus nigra (2♂ 3♀) .

Host. Salicaceae : Populus nigra L. ( Spencer 1976).

Mine. ( Fig. 71 ) The solitary larva forms a yellow wide irregular linear mine. When several larvae feed on one leaf, mines can unite and appear as a single blotch mine. Pupation takes place within the mine with the puparium overwintering.

Puparium. ( Figs. 72–74 ) Brownish-orange, glossy, 2.4 mm long, with weak segmentation; surface finely wrinkled except for wide spine bands. Posterior spiracles set on narrow and short conical protuberances entirely strongly separate; with numerous small sessile bulbs set around central larger bulb. Anal plate slightly protruding above the surface of the puparium viewed from the side and directed ventro-posteriorly.

Cephalopharyngeal skeleton. ( Fig. 377 ) Right mouthhook much larger than the left, each with ventral portion distinctly abducted and bearing two accessory teeth. Intermediate sclerite narrow and long, 1.32× as long as maximum height of left mouthhook. The mouthhook, the intermediate sclerite ventrally, anterior portion of the pharyngeal sclerite and the dorsal cornu posteriorly are strongly sclerotized; the intermediate sclerite dorsally, central portion of the dorsal cornu and ventral cornu are much less so. The dorsal cornu bears an oval “closed” window, and the ventral cornu bears a small and narrow “closed” window. Indentation index 80.

Female head. ( Figs. 378, 379 ) Yellowish-orange, with arista black and oc tr ginger medially; orbit strongly projecting above eye in profile, 2 orb s, 2 fr s; lunule higher than a semicircle, narrowing posteriorly, reaching the level of the posterior fr s; pped large, flattened anteriorly; gena medially 0.34× as high as maximum height of eye.

Female genitalia. ( Figs. 380–382 ) Anterior part of oviscape tube-shaped and connected with the posterior part at an angle of 135°. Body of ventral receptacle ovate and strongly sclerotized. Tail of ventral receptacle sinuate, very weakly sclerotized and scarcely visible. Proctiger stout, narrowing in apical half, length 3.25× as long as the maximum width.

Distribution. Widespread but uncommon Palaearctic species ( Papp & Černy 2019). Ukraine (first record).

Figures

FIGURES 67–74. Figures 67–70: Amauromyza (Cephalomyza) flavifrons (Meigen); 67: mine in Silene latifolia subsp. alba leaf; 68–69: posterior segments of puparium; 68: lateral view; 69: posterior view. 70: posterior spiracles (posterior view). Figures 71–74: Aulagromyza populi (Kaltenbach); 71: mines in Populus nigra leaf; 72–73: posterior segments of puparium; 72: lateral view; 73: posterior view. 74: posterior spiracles (posterior view).

FIGURES 377–382. Aulagromyza populi (Kaltenbach); 377: cephalopharyngeal skeleton; 378: frontal view of head; 379: head viewed from the side; 380: oviscape and spermatheca proportionally; 381: proctiger; 382 a–b: ventral receptacle; a: lateral view; b: view from behind.