Phytomyza karnarensis, Černý & Barták & Kubík & Vála, 2022

Černý, Miloš, Barták, Miroslav, Kubík, Štěpán & Vála, Miloslav, 2022, New records of Agromyzidae (Diptera) from Bulgaria, Zootaxa 5175 (4), pp. 401-438 : 430

Phytomyza karnarensis sp. nov.

( Figs 31–39 )

Type material. HOLOTYPE: ♂. BULGARIA: Plovdiv Province, 2km N of Karnare , 42°43’8.4”N, 24°37’58.8”E, 700m a.s.l., 23.–24.vi.2017, near stream, sweeping and Pan traps, M. Barták & Š. Kubík leg. ( CULSP). Head of the holotype is damaged, with exposed ptilinum ( Fig. 31 ).

Etymology. The name of the species, an adjectival toponym, is derived from the name of type locality, Karnare village.

Description. Male. Head ( Fig. 31 ) blackish brown, ocellar plate black, matt, frontal vitta blackish brown. Hind margin black, both vt on dark area. Orbits, gena and cheek blackish brown, grey, matt. Antennae and arista blackish brown, palpus brown, antennal pits black, matt. Frons very broad (about 2.5 times the width of eye at level of anterior ocellus). Orbits broad (about 0.27 width of frons), distinctly projecting above eye in profile. Two reclinate and divergent ors present, 2 inclinate ori. Orbital setulae numerous, arranged in one row. Gena including cheek deeply extended posteriorly, almost 0.55 times height of eye, 1 vi and 6–7 pm setae present. Cheek forms wide ring below eye. First flagellomere small, oval, covered with short pubescence, scape with 1 setula. Arista with short pubescence. Lunula semicircular. Thorax. Scutum and scutellum black, slightly shiny. Notopleural and anepisternal sutures narrowly yellowish white. Scutum with 1+3 dc, acr in 2 regular rows, but sporadic. All usual setae present: 1 oc, 1 pvt, 1 vte, 1 vti, 1 ppl, 1 ppnt, 1+1 npl, 1 prs, 1 sa, 1 epa, 1 ipa, 1 anepst, 1 kepst, 1 bs, 1 as. Wing ( Fig. 38 ) hyaline, wing base yellowish white, veins ochre brown, Wing ( Fig. 32 ) length 1.65 mm, ratio of costal sections 2–4 = 1.45: 0.43: 1.00. Wing tip close to vein M 1+2. Squama grey, margin and fringe blackish brown. Legs brown, fore tibia and tarsi ochre brown. Abdomen black, matt. Male genitalia: epandrium ( Fig. 35 ) sparsely covered with long setae; surstylus densely covered with thin setulae; cerci narrow and cylindrical, slightly curved, reaching almost 0.35 length of epandrium; phallus as in Figs 33–34 : distiphallus complex suboval, distally branching into two curved and diverging tubes; mesophallus cylindrical and narrow, basally slightly expanding; basiphallus consists of two irregularly shaped sclerites, right sclerite merged at base with the phallophorus, the left sclerite has a long, curved and very narrow outgrowth, which reaches backwards to about the midpoint of the phallophorus; both hypophallus and paraphallus absent; hypandrium ( Figs 36–37 ) broad, almost pentagonal; ejaculatory apodeme ( Figs 38–39 ) small, with asymmetrical blade.

Female and biology unknown.

Comments. The species is very similar to Phytomyza scotina Hendel, 1920 with regards to the dark colouring of the head, thorax and legs, the distinct and conspicuously projecting orbits above the eye in profile, the deeply extended gena posteriorly, the broad cheeks, the peculiar length of the second costal section, and the two rows of acr. The new species mostly differs in the structure of genitalia. In Ph. scotina , the distiphallus has a peculiar shape with a typical shaped dorsal and ventral part and distal diverging tubes, the mesophallus is very long and narrow; the hypophallus is narrow and long, a triangular paraphallus is present, and the ejaculatory apodeme is large, with a short stalk and a very wide blade (see Papp & Černý 2020: Figs 188D–J).

Figures

FIGURES 31–39. Phytomyza karnarensis sp. nov. 31—head with emerging ptilinium, lateral view; 32—wing; 33—phallus, lateral view; 34—same, ventral view; 35—epandrium, surstylus and cercus, caudal view; 36—hypandrium, dorsal view; 37— same, lateral view; 38—ejaculatory apodeme, lateral view; 39—same, caudal view. Scale bar: 0.5 mm for Fig. 31, 1 mm for Fig. 32, 1 mm for Figs 33–39.