Liriomyza tropaeoli, Guglya, 2021

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 : 61-62

publication ID	https://doi.org/ 10.11646/zootaxa.5014.1.1
publication LSID	lsid:zoobank.org:pub:63EEF5A6-EAE0-438F-87BC-AF5806BD3641
persistent identifier	https://treatment.plazi.org/id/D2619A43-FFC5-2A5F-49DB-A547FA61FE60
treatment provided by	Plazi
scientific name	Liriomyza tropaeoli
status	sp. nov.

Treatment

Liriomyza tropaeoli View in CoL spec. nov.

( Figs. 134–137 View FIGURES 130–137 , 525–536 View FIGURES 525–530 View FIGURES 531–536 )

Holotype ( KUMN). “ Ukraine, Kharkiv, / City Centre / 50°00’N, 36°14’E, / 11.vi.2013 —mines collected / Yu. Guglya leg.”, “linear whitish-green / mine on upper leaf / surface / of Tropaeolum majus , / 22.vi.2013 —imago” (1♂). GoogleMaps

Paratype ( KUMN). “ Ukraine, Kharkiv, / City Centre / 50°00’N, 36°14’E, / 11.vi.2013 —mines collected / Yu. Guglya leg.”, “linear whitish-green / mine on upper leaf / surface / of Tropaeolum majus , / 22.vi.2013 —imago” (1♀) GoogleMaps .

Etymology. The name of the new species reflects its host specialization.

Host. Tropaeolaceae : Tropaeolum majus L.

Mine. ( Figs. 134 View FIGURES 130–137 ) The larva forms a whitish-green linear upper surface mine that diverges from the base of the leaf along several veins. Pupation takes place inside the mine on the lower leaf surface subepidermally ( Fig. 135 View FIGURES 130–137 ).

Puparium. ( Figs. 136, 137 View FIGURES 130–137 ) Straw-coloured, 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 a kidney-shaped arrangement. Anal plate brown, scarcely protruding above the surface of the puparium viewed from the side and directed ventro-posteriorly.

Cephalopharyngeal skeleton. ( Fig. 525 View FIGURES 525–530 ) Right mouthhook much larger than the left, each with rounded abducted portion directed ventro-anteriorly and bearing two accessory teeth. Intermediate sclerite long, massive, slightly curved dorsally, 1.37× as long as maximum height of left mouthhook. The mouthhook and the intermediate sclerite centrally and ventrally are strongly sclerotized, the intermediate sclerite dorsally and the pharyngeal sclerite much less so. Indentation index 85.

Adult description. Head. ( Figs. 526, 527 View FIGURES 525–530 ) Orbit slightly projecting above eye in profile, especially on the frontal area; 2 orb s, 2 fr s; frorb sta in one row, reclinate, very sparse, short; orbit wide (frontal view); lunule narrowing posteriorly, reaching the level of the anterior fr s; gena medially 0.36× as high as maximum height of eye; gena deepest in posterior part; pped flattened apically viewed from the side. Colour: head yellow with the exception of narrow dark area behind eye (both vt s on the yellow ground) and back head (ocp and m ocp scl); pubescence of pped yellow; all head setae and arista black.

Wing: ( Fig. 531 View FIGURES 531–536 ) Hyaline with greyish undertone; costal vein greyish-black, ending slightly after M 1; last section of CuA 1 2.3× as long as penultimate; calypter yellow, margin and fringe grey. Wing length: 1.5 mm in male, 1.7 mm in female.

Mesonotum: ( Figs. 528, 529 View FIGURES 525–530 ) Brownish-black, shining viewed from above; sctl mainly yellow, black laterally, both ap sctl s and b sctl s on the yellow ground; 1+3 dc s; acr s sparse in 5 irregular rows at level of 2 nd postsutural dc s; halters bright yellow; all legs yellow with brown dusting except yellow ventral femur surface.

Male genitalia: ( Figs. 532–536 View FIGURES 531–536 ) Shape of epandrium–hypandrium complex is typical for the genus, but shape of phallus differs from other species. Ventral apical part of epandrium acute at an angle of 85°, with one posteroventral spine. Postgonite long, with one long, stout and curved tooth. Subepandrial sclerite wider than long, with broad, slightly sclerotized proximal lobes, bearing one strong seta media-laterally and narrow, curved distal lobes bearing one stout spine. Hypandrium U-shaped, with narrow, long arms; pregonite bears one long seta directed media-anteriorly. Distiphallus weakly sclerotized, cylindrical, as long as bulb of sperm duct. Hypophallus hooklike, narrowly strongly sclerotized postero-ventrally and membranous anteriorly. Ejaculatory apodeme triangular, dramatically widened apically, with short stem and slender base. Sperm sac entirely membranous, 0.5× as high as height of apodeme. Phallus 0.3 mm long.

Female genitalia: ( Fig. 530 View FIGURES 525–530 ) Spermathecae are unequal in size, dark brown, obovate. The largest spermatheca is 0.25× as high as height of folded 8 th segment. Length of more sclerotized portion of spermathecal duct 1.66× as long as height of spermatheca; weakly sclerotized portion distinctly narrowed unlike that of L. bryoniae ( Fig. 474 View FIGURES 470–474 ).

Distribution. Ukraine (Kharkiv Region).

The new species can be integrated into the key on page 50 of Papp & Černý (2017) as follows:

15. Pped definitely angulate ( Papp & Černý 2017: Fig. 13A View FIGURES 9–18 ).................................................... 16

- Pped round or flattened apically....................................................................... 16a

16. …

- …

16a. Pped flattened apically. Male genitalia ( Figs. 532–536 View FIGURES 531–536 ): distiphallus weakly sclerotized, cylindrical, as long as bulb of sperm duct. Hypophallus hook-like, narrowly strongly sclerotized postero-ventrally and membranous anteriorly.................................................................................................. L. tropaeoli spec.nov.

- Pped round apically. Shape of male genitalia otherwise...................................................... 17