Hammerschmidtia ferruginea (Fallen, 1817)

Maritano, Umberto, Bianco, Lorenzo & Torta, Samuele, 2024, New observations on rare and threatened saproxylic hoverflies in North-Western Italy with ecological notes, Biodiversity Data Journal 12, pp. e 127968-e 127968 : e127968-

Hammerschmidtia ferruginea (Fallen, 1817)

Materials

Type status: Other material. Occurrence: individualCount: 1; sex: male; lifeStage: adult; behavior: foraging; occurrenceID: C9E96EFD-5B53-55DF-B934-4E1E985B3BEA; Location: stateProvince: Piedmont; county: Italy; municipality: Pragelato (TO); locality: Troncea ; verbatimElevation: 1756 m; verbatimLatitude: 44 ° 57 ' 27 '' N; verbatimLongitude: 6 ° 56 ' 35 '' E; verbatimCoordinateSystem: WGS 84; decimalLatitude: 44.9575; decimalLongitude: 6.9430555; geodeticDatum: WGS 84; Identification: identifiedBy: Umberto Maritano; Event: samplingProtocol: entomological net; eventDate: 2021-06 - 26; habitat: near Populus tremula stand; eventRemarks: on Rosa canina flower; Record Level: type: PhysicalObject; collectionID: Umberto Maritano Collection

Type status: Other material. Occurrence: individualCount: 1; sex: female; lifeStage: adult; behavior: foraging; occurrenceID: 5707B989-54B7-5E8B-B8E0-4CC78331F536; Location: stateProvince: Piedmont; county: Italy; municipality: Pragelato (TO); locality: Troncea ; verbatimElevation: 1756 m; verbatimLatitude: 44 ° 57 ' 27 '' N; verbatimLongitude: 6 ° 56 ' 35 '' E; verbatimCoordinateSystem: WGS 84; decimalLatitude: 44.9575; decimalLongitude: 6.9430555; geodeticDatum: WGS 84; Identification: identifiedBy: Umberto Maritano; Event: samplingProtocol: entomological net; eventDate: 2021-07 - 17; habitat: near Populus tremula stand; eventRemarks: on Apiaceae flower; Record Level: type: PhysicalObject; collectionID: Umberto Maritano Collection

Type status: Other material. Occurrence: individualCount: 1; sex: male; lifeStage: adult; behavior: foraging; occurrenceID: CFA2BA4D-83AC-5521-B436-69F972E1CC0C; Location: stateProvince: Piedmont; county: Italy; municipality: Pragelato (TO); locality: Troncea ; verbatimElevation: 1756 m; verbatimLatitude: 44 ° 57 ' 27 '' N; verbatimLongitude: 6 ° 56 ' 35 '' E; verbatimCoordinateSystem: WGS 84; decimalLatitude: 44.9575; decimalLongitude: 6.9430555; geodeticDatum: WGS 84; Identification: identifiedBy: Umberto Maritano; Event: samplingProtocol: observation; eventDate: 2021-07 - 17; habitat: near Populus tremula stand; eventRemarks: on Apiaceae flower; Record Level: type: Stillimage

Notes

This species is widely distributed throughout the Scandinavian peninsula (Fig. 12 ), but it is present only in a few localities with relict populations in the Alps ( Steenis et al. 2020). The only historical record for Italy dates back over a century ago near Turin ( Sommaggio 2007). One of the authors ( UM) found a male in June and a female and a male in July in Troncea Valley (Fig. 13 ). The specimens were observed in open unimproved subalpine grassland on Rosa canina and Apiaceae flowers (Fig. 14 ) foraging at a distance of 700-800 m away from a Populus tremula stand that includes approximately 50 poplar trees in a homogeneous surface area of only 0.13 ha.

Figures

Figure 12. Distribution map of Hammerschmidtia ferruginea (white <1950, white with black point ≥ 1950 <2000, black ≥ 2000, ? = uncertain record, + datum unknown). Map modified from van Steenis (2023) with a red dot for new data.

Figure 13. Distribution of Hammerschmidtia ferruginea in the Piedmont region.

Figure 14. Hammerschmidtia ferruginea on Apiaceae flowers, 17 July 2021; A, B female; C male.