Wiedemannia iphigeniae Ivkovic & Sinclair

Ivkovic, Marija, Cevid, Josipa, Horvat, Bogdan & Sinclair, Bradley J., 2017, Aquatic dance flies (Diptera, Empididae, Clinocerinae and Hemerodromiinae) of Greece: species richness, distribution and description of five new species, ZooKeys 724, pp. 53-100 : 53-55

Wiedemannia iphigeniae Ivkovic & Sinclair sp. n. Figs 1, 6, 7

Type locality.

Greece: Peloponnese, Aroania Mts., Krinofita, 37°49'00"N, 22°10'00"E.

Type material.

Holotype ♂, labelled: "GREECE, Peloponnese/ Aroania Mts., Krinofita/ 37°49'00"N, 22°10'00"E / 20.iv.1990/ leg. B. Horvat, I. Sivec"; "HOLOTYPE/ Wiedemannia / iphigeniae / Ivković & Sinclair" (CNC, dried from alcohol).

Diagnosis.

This species of Wiedemannia is distinguished by the apically pointed unilobed cercus with small basal projection and a narrow pterostigma on the wings.

Description.

Male. Body length approx. 3.5 mm (holotype dissected prior to measurement), wing length 3.7 mm (colouration bleached by prolonged storage in alcohol). Head in lateral view higher than long; gena narrow, nearly one-third height of eye. Frons short, broader than face. Face wide, with distinct carina on lower margin, bare, lacking setae. One pair of ocellar and one pair of vertical setae; about 5 distinct upper postoculars, subequal in size; lower postocular setae finer and merging with longer setae on middle and lower occiput; many setulae present on vertex and between ocellar area. Antenna brownish; postpedicel and stylus minutely pubescent; pedicel slightly longer than scape; scape with complete circlet of subapical setae; postpedicel apically pointed; stylus nearly twice length of postpedicel; scape with setulae dorsally.

Scutum with pale central vitta between dorsocentral rows. Mesonotum with 5 dorsocentral setae, with short setulae intermixed. Acrostichal setae small and fine, biserial, extending to 2nd dorsocentral seta; 1 strong postpronotal seta and 1-4 short setulae; 2 notopleural setae and several setulae; 1 presutural supra-alar seta and many small anterior setulae; 1 postalar seta. Antepronotum with 1 pair of strong setae and 1 pair of smaller setae. Proepisternum with some fine setulae. Laterotergite with several fine, pale setulae. One pair of strong marginal scutellar setae; disc without setae.

Wing membrane clear, veins darker; 1 long basal costal seta, extending almost to humeral crossvein. Cell dm produced anteroapically. M1 and M2 with long stem vein proximal to M1+2 fork. CuA+CuP not visible. Pterostigma elongate, faint. Squama with setulae. Halter pale.

Legs brownish; fore femur with two stronger anterior setae on apical fourth; uniformly covered with rows of small dark setulae. All coxae with longer setae anteriorly; fore coxae with several erect setae. Fore and mid femora ventrally with some longer setulae on proximal half, some longer than width of segment.

Abdomen covered in small setae. Terminalia (Figs 6, 7): hypandrium subequal in length with epandrium; narrow, with 8 pairs of short setae. Epandrium subrectangular, covered with long setae especially ventrally and laterally; surstylus thumb-like on inner face apically. Clasping cercus unilobed, pointed apically; finger-like, with small basal projection on inner face with setae; fine on outer face near anterior margin and apex; inner face with stouter setae, especially near posterior margin. Phallus more or less linear, slender; distiphallus similar to phallus shaft, narrow, without swellings.

Female. Unknown.

Etymology.

The species is named after the Greek mythology character Iphigenia, the priestess of the Greek Goddess Artemis.

Remarks.

Wiedemannia iphigeniae sp. n. is known only from the type locality in Greece. The shape of the clasping cercus is similar to that of W. aerea Vaillant, 1967 (Pyrenees), but a distinct basal projection is lacking in the latter species.