Wiedemannia hastata (Mik)

Wagner, Rüdiger, Plant, Adrian, Ivković, Marija & Gattolliat, Jean-Luc, 2022, New synonyms and new species of European aquatic dance flies (Diptera, Empididae), Zootaxa 5222 (5), pp. 427-442 : 431-433

Wiedemannia hastata (Mik)

( Fig. 4 )

Clinocera hastata Mik, 1880: 349 . Type locality: Tyrolis / Achenthal (= Achental, Tirol, Austria).

Wiedemannia aerea Vaillant, 1967: 271 . Type locality: Torrent de la Roche Noire, Hautes Alpes, France. Syn. nov.

Type material examined. Wiedemannia hastata : LECTOTYPE ♁ by present designation: label 1: Tyrolis, Achenthal, 28.7.87, Mik; label 2: 28.7.87 (3); label 3: hastata?; label 4: hastata?, det. Mik (all labels white, glued to slide) ( NHMW). Slide mounted in Canada balsam with red lectotype label, handwritten: Wiedemannia hastata Mik , Lectotypus, Wagner 2022 ( Fig. 4a ). PARALECTOTYPES: 1 ♁, 1 ♀, on single pin: label 1 printed: Schizo (???); label 2: Robert Maq; label 3: unidentifiable; label 4, handwritten: Chamaedipsia / hastata / det. Engel ; 1 ♀, label 1: Gmunden , Schiner; label 2: hastata det Mik —both labels white without date ; 1 ♀, label 1: Tyrolis , Achenthal; label 2: 28.7.87 (3); label 3: hastata? / hastata? det Mik (all labels white) ; 1 ♀ [abdomen missing] label 1: Tyrolis / Achenthal 28.7.87 (label white) (all NHMW) .

Lectotype and paralectotypes by present designation in order to fix the identity of the species, all material deposited in the collection of the Natural History Museum Vienna ( NHMW) .

Wiedemannia aerea : 2 ♁ on single slide, label 1 (pencil): gen. comparer avec sp. (change) Sp. Le Lez à Mensac, TÊTE; label 2 (ink): Wiedemannia (Chamaedipsia) aerea Vaillant ♁ ♁, Torrent de la Roche Noire, Hautes Alpes [à 2 050 m], 15.ix.1966; label 3 (printed, slide no. GBIFCH00596291 ). The well sclerotized male on the right side is selected as lectotype by present designation (red label: Lectotype -arrow towards specimen— Wagner 2022) ( Fig. 4b ) .

Additional material examined. 1 ♁, 1 ♀, Col du Galibier (Hautes Alpes), 15.9.1966 (ink); F. Vaillant (printed); (slide no. GBIFCH00596292 ); 1 ♁, label 1 (ink): Wiedemannia (Chamaedipsia) area Vaillant 1967 ♁ HOLOTYPE; label 2 (pencil and ink): Le Lez, Mensac, 1,100m, 24.viii.1974 (slide no. GBIFCH00596293 , MZLS) ( Fig. 4c ); 1 ♁, label 1: Wiedemannia (Chamaedipsia) area (black ink), Gen profil, BBB (blue ink); label 2 white with red margin:? paratype? MZL 2021 ; label 3: Le Lez, Mensac, 1,100m, 24.VIII.1974 paratype 2 GG MZL 2020 (blue ink) (slide no. GBIFCH00596294 , MZLS) .

Remarks. Only two males (on a single slide) were identified that matched the stated type locality ‘Torrent de la Roche Noire’ and date; he also collected a female (femelle) but it was not found. All other specimens are from later years from the type locality and other sites. The designation of a ‘holotype’ on the slide from Le Lez ( Fig. 4c ) (see above GBIFCH00596293) written later by Vaillant is invalid. Wiedemannia hastata Mik and W. aerea Vaillant are morphologically indistinguishable. Engel’s figure of W. hastata (1940, pl. XI, fig. 84) shows a small apical division of the clasping cercus; however, this was not found in any male of the type-material and a crack where it might be broken was not found. General differences in male terminalia appear to be dependent on the different treatment methods and drawing abilities of the authors.

Wiedemannia hastata is probably endemic to the highest reaches of the Alps.

Figures

FIGURE 4. Wiedemannia species. a, W. hastata Mik, slide with lectotype; b, W. aerea Vaillant, slide with lectotype indicated by red label with arrow; c, W. aerea Vaillant, false designation of holotype by Vaillant (photos a, b RW; c MZLS)