Wiedemannia
Creators: name: Kustov, Semen
name: Zherebilo, Danil
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Empididae
Wiedemannia

description: Key to species of Wiedemannia from the Caucasus
1 Gena wide, more than 1/2 of eye height................................................................... 2
- Gena narrow, less than 1/3 of eye height.................................................................. 3
2 Pterostigma rounded, very large and distinct. Width of gena slightly more than 1/2 of eye height. Clasping cercus elongate, projecting well beyond tip of phallus, narrower at mid length and long slender basal process projecting anteriorly (Fig. 2)............................................................................. W. (Chamaedipsia) braueri (Mik)
- Pterostigma indistinct and elongate. Width of gena equal to eye height. Clasping cercus unilobed, shorter, extending to tip of phallus, broader at base, without basal process (Fig. 3)............................... W. (Philolutra) caucasica Joost
3 Acrostichal setae extending only to third dorsocentral seta.................................................... 4
- Acrostichal setae extending around prescutellar depression................................................... 8
4 Fore femur with strong anterior setae apically. Terminalia as in Figure 17 .............. W. (Eucelidia) zetterstedti (Fallén)
- Fore femur without strong anterior setae apically........................................................... 5
5 Notopleuron with blue pruinescence. Clasping cercus unilobed or with broad not slender lobes....................... 6
- Notopleuron without blue pruinescence. Clasping cercus with anterior lobe slender, digitiform....................... 7
6 Clasping cercus broad, mitten-shaped, lobes not slender (Fig. 4).......................... W. (Philolutra) chvali Joost
- Clasping cercus long and unilobed, perpendicular to epandrium (Fig. 14).............. W. shamshevi Kustov & Zherebilo
7 Lobes of clasping cercus orientated at right angles, L-shaped; digitiform lobe nearly directed vertically (Fig. 7)...................................................................................... W. (Philolutra) klausnitzeri Joost
- Lobes of clasping cercus more broadly orientated, beyond right angles (Fig. 8)............ W. kustovi Sinclair & Shamshev
8 Fore femur without strong anterior setae apically........................................................... 9
- Fore femur with strong anterior setae apically............................................................. 13
9 Clasping cercus undivided............................................................................ 10
- Clasping cercus bilobed.............................................................................. 11
10 Mesonotum with triangular-shaped blue pruinescence on prescutellar depression. Clasping cercus elongate, narrowed to apex (Fig. 1).................................................................. W. (Chamaedipsia) beckeri (Mik)
- Mesonotum completely brownish. Clasping cercus rounded (Fig. 15)................... W. sinclairi Kustov & Zherebilo
11 Mesonotum with light greyish-blue pruinescence on notopleuron. Pleura with light blue pruinescence. Clasping cercus with shiny black anterior lobe (Fig. 5)............................................... W. (Philolutra) fallaciosa (Loew)
- Mesonotum completely brownish. Pleura with violet-blue pruinescence. Clasping cercus with dull anterior lobe........ 12
12 Clasping cercus with anterior lobe short, pointed, bearing cluster of apical setae; dorsal process subtriangular, inner margin clothed in dense setae (Fig. 13).............................................. W. (Philolutra) pseudovaillanti Joost
- Clasping cercus with anterior lobe prolonged, digitiform and slender, without cluster of apical setae; dorsal process anvil- shaped, inner margin without dense setae (Fig. 16).................................... W. (Philolutra) vaillanti Joost
13 Dorsocentrals without intermediate setae interspersed among primary setae...................................... 14
- Dorsocentrals with intermediate setae interspersed among primary setae........................................ 16
14 Fore femur with 1 strong anterior seta on apical third. Clasping cercus yellowish basally, long and wide, rounded apically (Fig. 9)......................................................................... W. (Chamaedipsia) lota Walker
- Fore femur with 2–3 strong anterior setae on apical third. Clasping cercus dorsally brown to black, narrowed apically... 15
15 Clasping cercus with apical finger-like prolongation (Fig. 6).................................. W. ivkovicae sp. nov.
- Clasping cercus evenly narrowed apically (Fig. 10)........................................ W. nartshukae sp. nov.
16 Mesonotum with triangular-shaped blue pruinescence on prescutellar depression. Scutellum with only 2 long scutellar setae. Clasping cercus with broad apex (Fig. 11)................................................. W. ossetiana sp. nov.
- Mesonotum with light brown pruinescence on prescutellar depression. Scutellum with 2 long and 2–3 short marginal setae. Clasping cercus tapered apically, apex narrow (Fig. 12)..................................... W. pseguashae sp. nov.
description: Published as part of Kustov, Semen & Zherebilo, Danil, 2015, New data on the genus Wiedemannia Zetterstedt (Diptera: Empididae) from the Caucasus with description of four new species, pp. 351-369 in Zootaxa 4032 (4) on page 367, DOI: 10.11646/zootaxa.4032.4.1, http://zenodo.org/record/243485