Hyadina guttata (Fallén, 1813)

Hyadina guttata (Fallén, 1813) View in CoL

Notiphila guttata Fallén 1813: 253 View in CoL ; type-locality: “ Scania ” [ Sweden]; LT M, des. by Mathis & Zatwarnicki (2004a) [MZLU, Mathis & Zatwarnicki 2004a].

Hydrellia viridis Macquart 1835: 527 View in CoL ; type-locality: “ Du nord de la France ”; no information available about type material [MNHN, Mathis & Zatwarnicki 1995], synonymy by Becker (1905).

Hyadina humeralis Becker 1896: 195-196 View in CoL ; type-locality: “ Scania ” [ Sweden]; LT M, des. by Mathis & Zatwarnicki (2004a) [ZMHB, Mathis & Zatwarnicki 2004a], synonymy by Mathis & Zatwarnicki (2004a).

Hyadina guttata Hal. var. obscuripes Strobl 1900:2-3 View in CoL ; type-locality: “Algeciras, S. Morena, Irun” [ Spain]; ST 13 4♀ [NMBA, Chvála 2008], synonymy by Cogan (1984).

Hyadina guttata Hal. var. nigripes Strobl 1900: 3 View in CoL ; type-locality: “Irun” [ Spain]; HT 3 [NMBA, Chvála 2008], synonymy by Cogan (1984).

Diagnosis. Hyadina guttata belongs to the group that is characterised by (i) only inner vertical seta and (ii) scutellum velvet black laterally (as Fig. 7 View Figs 5-13 ). Males are straightforward to recognise by the golden dusted face.Except for the black legged H. agostinhoi , H. guttata differs by the shining tergite 5 that has at least laterally no microtrichia beside the scattered long hairs ( Fig. 14 View Figs 14-19 ). Terminalia as Figs 20-22 View Figs 20-27 .

Distribution. Hyadina guttata is widely distributed in Europe and might be the most common Hyadina species. The only European distribution border is in the north with the northernmost records known so far from 66° N in Finland ( GBIF 2023a). Outside Europe it is found in North Africa with records from Morocco (Vitte 1988, 1991) to Egypt ( Hollmann-Schirrmacher 1998, El-Hawagry et al. 2018), from Turkey ( Hollmann-Schirrmacher 1998, Popescu-Mirceni 2011), Israel (Mathis & Zatwarnicki 2004a) and the Far East of Russia ( Krivosheina 1986).

Biology. Hyadina guttata lives in a wide range of habitats as summarized by Bährmann (1995). He points out that H. guttata might be common on xerothermic meadows. At least regionally it prefers wetlands in the widest sense including for example wet meadows, forests, or fens. It can be classified as ubiquitous. Of course, it might have very special habitat requirements that occur in different habitats that are not known so far. Hyadina guttata has been recorded all through the year with a peak in April and May (personal observation) and a second peak in autumn ( Bährmann 1995), is probably polyvoltine and might overwinter as adult fly. The Laboulbeniales Stigmatomyces spiralis Thaxter, 1901 is reported from H. guttata ( Dainat & Dainat 1973 as S. hyadinae Balazuc, 1974 as S. hyadinae Rossi, 1993 ).