Nesospiza wilkinsi dunnei Hagen, 1952

Johannessen, Lars Erik & Lifjeld, Jan T., 2022, Type specimens of birds in the Natural History Museum, University of Oslo, Norway, Zootaxa 5150 (4), pp. 451-486 : 470-471

Nesospiza wilkinsi dunnei Hagen, 1952

Birds of Tristan da Cunha. Results of the Norwegian scientific expedition to Tristan da Cunha 1937–1938, No. 20: 172–177.

Current name: Nesospiza acunhae dunnei Hagen, 1952 .

Holotype NHMO-BI-100346; In alcohol; Ad. F; Yngvar Hagen (250), 20 February 1938; SHN 4: Inaccessible, above Blenden Hall; 37.294° S 12.694° W; 18a.

Paratype NHMO-BI-64842 [I023510]; Study skin; Imm.; Yngvar Hagen (270), 1 March 1938; SHN: Inaccessible, above Blenden Hall; 37.300° S 12.701° W; 17a.

Paratype NHMO-BI-100347; In alcohol; Imm.; Yngvar Hagen (249), 20 February 1938; SHN: Inaccessible, above Blenden Hall; 37.294° S 12.694° W; 18b.

Remarks: Hagen (1952) based his description of this new subspecies on one adult female, which he designated as the ‘Type’, and two immature specimens of unknown sex. The adult female is, therefore, considered to be the holotype of this taxon, according to article 73.1.1 of the Code ( International Commission on Zoological Nomenclature 1999), and the immature specimens paratypes. All types are present in the NHMO collection.

All three specimens are labelled with metal tags having the collector’s field number embossed into them ( Figure 7 ). The adult female and one of the immatures were originally preserved in formalin ( Hagen 1952) but has later been transferred to 70% ethanol.

The subspecies has subsequently been transferred to the congeneric N. acunhae , as Nesospiza acunhae dunnei ( Ryan 2008) .

Figures

FIGURE 7. Labels (metal tags) of type specimens in the NHMO Bird Collection of Nesospiza wilkinsi dunnei Hagen, 1952 (all collector’s labels). a) NHMO-BI-100346; b) NHMO-BI-64842; c) NHMO-BI-100347.