Chrysotoxum anatolicum Nedeljković et Vujić, 2020

Nedeljković, Zorica, Ricarte, Antonio, Šašić Zorić, Ljiljana, Djan, Mihajla, Hayat, Rüstem, Vujić, Ante & Marcos-García, Mª Ángeles, 2020, Integrative taxonomy confirms two new West-Palaearctic species allied with Chrysotoxum vernale Loew, 1841 (Diptera: Syrphidae), Organisms Diversity & Evolution (New York, N. Y.) 20 (4), pp. 821-833 : 823-825

Chrysotoxum anatolicum Nedeljković et Vujić , sp. n. ( Figs. 1a, 2, 4a, 5a)

Examined material. Holotype: 1♀, Turkey, İzmir, Bozdağ, Ski Centre 1, [38.332626 N 28.108250 E], 24 June 2016, leg. Vujić, Ačanski & Uzal [FSUNS].

Paratype: 1♀, Turkey, İzmir, Bozdağ, Ski Center 1, [38.332626 N 28.108250 E], 25 June 2016, leg. Vujić, Ačanski & Uzal [FSUNS] .

Additional material of other species. Specimens of C. vernale and C. montanum , including types, published in Nedeljković et al. (2015).

Type locality. İzmir, Bozdağ ( Turkey).

Diagnosis. L= 14–15 mm (n = 2). Gena dark brown to black; r = 1:0.66:1.42 (n = 2); basoflagellomere 3.28 times longer than wide (n = 2); pro- and mesofemora black in their basal thirds, metafemur yellow; wing extensively but unevenly pigmented, darker towards the anterior margin and apex: cells R 1 and R 2+3 dark yellow pigmented basally and dark brown to black pigmented apically, cells R 4+5 and DM dark brown to black pigmented, cell CuA 1 dark brown pigmented, cells R and BM dark yellow pigmented, cell CuP yellow pigmented ( Fig. 4a).

Remarks. The other species of the C. vernale group, including C. hispanicum sp. n., have at least posterior half of wing without pigmentation. Chrysotoxum anatolicum sp. n. can also be separated from the similar C. vernale by the shape of the frontal pollinose maculae, bar-shaped in C. anatolicum sp. n. ( Fig. 1a) but triangular in C. vernale [ Figure 5D in Vujić et al. (2017)], and colour of the posterior margin of T3, wholly black in C. anatolicum sp. n. but at least with a small central yellow macula in C. vernale .

Description. Female. L = 14 mm.

Head ( Figs. 1a, 2). Eye with sparse, straight, yellow pile; frons shiny black, with short, black pile and with two separate, bar-shaped, white pollinose maculae ( Fig. 1a); ocellar triangle equilateral, shiny black with short black pile; occiput shiny black behind the ocellar triangle and white pollinose in other parts, narrowly yellow ventrally, with yellow pile intermixed with black pile dorsally; antenna black; scape and pedicel with black pile; r = 1:0.62:1.45; arista bare, dark brown; face yellow, with yellow pile; face with a medial black vitta extending from antennal base to mouth edge; facial vitta as wide as a third of the facial width; face black postero-ventrally; gena yellow pilose, entirely shiny black ( Fig. 2).

Thorax. Scutum black, with two medial, silvery, pollinose vittae extending for a third of the scutum length from its anterior margin, with short black pile; pleuron shiny black, except yellow maculae on posterior anepisternum and katatergum; katepisternum wholly black; scutellum yellow, except black on lateral corners and a medial macula; scutellum with short black pile; legs yellow except black on basal thirds of pro- and mesofemora; metafemur yellow; wing ( Fig. 4a) membrane extensively microtrichose; wing cells R 1 and R 2+3 dark yellow pigmented basally and dark brown to black pigmented apically; cells R 4+5 and DM dark brown to black pigmented; cell CuA 1 dark brown pigmented; cells R and BM dark yellow pigmented; CuP yellow pigmented; calypter yellow with yellow pile at edge; halter dark brown basally, the remainder yellow, with lighter capitulum.

Abdomen ( Fig. 5a). Shiny black, with short black pile, except for T1 and anterior part of T2 having long yellow and black pile intermixed; all terga with two separate, elongate, yellow maculae not reaching the lateral margins; yellow maculae bearing yellow pile; all sterna shiny black, with short yellow pile anteriorly and black pile posteriorly; S3 with two interconnected yellow maculae, not reaching the lateral margins; S4 with two yellow maculae not reaching the lateral margins; all sternal markings yellow pilose.

Male. Unknown.

Etymology. The specific epithet ‘anatolicum’ refers to the geographic origin of the specimens of the type series, a locality in the Anatolian Peninsula.

Habitats. Specimens were collected in a Mediterranean mountain steppe with Astragalus tmoleus var. tmoleus and Genista lydia var. lydia , between 1800 and 1900 m asl. This montane habitat is found at altitudes above forests of Pinus brutia and P. nigra pallasiana and below subalpinevegetation habitats (i.e. communities of Sideritis taurica , Euphorbia anacampseros var. tmolea , Minuartia juressi , Campanula teucrioides ).