Agromyza hendeli Griffiths

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 : 9-10

Agromyza hendeli Griffiths

( Figs. 9–12 , 295–298 )

Material examind: Ukraine: Kharkiv Region: near Petrivske , 49°10’N, 36°58’E, 10.vii.2020, Yu. Guglya, ex Glyceria maxima (1♀). The rest of material see in Guglya (2020) .

Hosts. Poaceae : Phragmites australis (Cav.) Trin. ex Steud. ( Spencer 1976) . Phalaris L. ( Warrington 2021). Glyceria maxima (Hartm.) Holmb. newly recorded host plant.

Mine. ( Fig. 9 ) The solitary larva forms a wide linear leaf mine. Pupation takes place within the mine (according to my own data) or outside the mine with the puparium frequently remaining attached to the leaf ( Spencer 1976).

Puparium. ( Figs. 10–12 ) Yellowish-orange, glossy, 3.8 mm long, with deep segmentation; surface quite smooth except for one-row spine bands. Spines are minute and black. Posterior spiracles set flat on the body cuticle, entirely separate; blackish-brown, with three straight orange slits set in a circular configuration at right angles to each other. Anal plate black, not protruding above the surface of the puparium viewed from the side and directed ventrally.

Cephalopharyngeal skeleton. ( Fig. 295 ) Both mouthhooks equal in size, angulate dorsally. Each mouthhook bears three accessory teeth. Intermediate sclerite long and narrow, more weakly sclerotized dorso-posteriorly, 1.13× as long as height of mouthhook. The dorsal cornu bears a narrow and long “closed” window with irregular contours. The pharyngeal sclerite is much more sclerotized anteriorly than the ventral and dorsal cornua. Indentation index 85.

Female head. ( Figs. 296, 297 ) Black, with orbit not projecting above eye in profile, 2 orb s, 3 fr s and low lunule, reaching the level between fr s; pped of medium size, concave ventrally; gena medially 0.16× as high as maximum height of eye.

Female genitalia. ( Fig. 298 ) Spermathecae equal in size, dark brown, flattened basally and with extremely elongated apical triangular portion, 2.3× as high as maximum width. Internal duct invagination 0.15× as deep as height of spermatheca, widening apically. Neck of spermatheca bulbous and narrowing near the spermatheca base.

Distribution. A rarely collected European species recorded from 14 countries ( Papp & Černý 2015). In Ukraine known from Transcarpathia, Sumy and Kharkiv Regions ( Guglya 2020).

Figures

FIGURES 9–18. Figures 9–12: Agromyza hendeli Griffiths; 9: mine in Glyceria maxima leaf; 10–11: posterior segments of puparium; 10: lateral view; 11: posterior view. 12: posterior spiracles (posterior view). Figures 13–15: A. igniceps Hendel; 13–14: posterior segments of puparium; 13: lateral view; 14: posterior view. 15: posterior spiracles (posterior view). Figures 16–18: A. reptans Fallén; 16–17: posterior segments of puparium; 16: lateral view; 17: posterior view. 18: posterior spiracles (posterior view).

FIGURES 295–304. Figures 295–298: Agromyza hendeli Griffiths; 295: cephalopharyngeal skeleton; 296: frontal view of head; 297: head viewed from the side; 298: spermatheca. Figure 299: cephalopharyngeal skeleton of A. igniceps Hendel; Figures 300–304: A. reptans Fallén; 300: cephalopharyngeal skeleton; 301: parastomal bar and anterior portion of pharyngeal sclerite viewed from below; 302: frontal view of head; 303: head viewed from the side; 304: spermathecae.