Polydesmus angustus Latzel, 1884

Gilgado, José D. & Ortuño, Vicente M., 2023, Polydesmid millipedes in the MSS of the northern Iberian Peninsula (Diplopoda, Polydesmida, Polydesmidae), Zoosystema 45 (15), pp. 451-461 : 456

Polydesmus angustus Latzel, 1884

( Figs 3B ; 4B )

Polydesmus angustus Latzel, 1884: 262 .

MATERIAL EXAMINED. — Spain • 1 ♀; Palencia, Piedras Luengas, Hoyo de los Lobos , Las Lombas , Forest ; 43°02’42”N, 04°28’16”W; 1300 m a.s.l.; 20. VI.2016; V. M. Ortuño, J. D. Gilgado & E. Ledesma leg.; MSS; UAH • 1♂; same data; 25. VI.2019; UAH • 1♂; Palencia, Sierra de Peña Labra, Piedras Luengas , bare scree; 43°02’21”N, 04°26’55”W; 1520 m a.s.l.; 21. VI.2018; V. M. Ortuño, J. D. Gilgado & E. Ledesma leg.; MSS; UAH • 3 ♂; Cantabria, Pesaguero, Sierra Mediana, Collado de la Cruz de las Cabezuelas , forest; 43°04’19”N, 04°28’18”W; 1050 m a.s.l.; 27. VI.2017; V. M. Ortuño, J. D. Gilgado & E. Ledesma leg; MSS; UAH • 1 ♂, 1 ♀; same data; MNHN • 5 ♂, 3 ♀; same data; 31.X.2018; UAH • 33 ♂, 7♀; same data; 21. VI.2018; UAH • 9♂, 6♀; same data; 22. VI.2019; UAH • 121 ♂, 20 ♀; same data; 1.IX.2021; UAH .

REMARKS

The species has a wide distribution in western Europe, namely in Germany, Switzerland, the United Kingdom and France, including the northern part of the Pyrenees, and several other countries ( Kime & Enghoff 2011). This species was reported in Spain for the first time by Mauriès (1971), in the province of Lerida, in the Catalonian Pyrenees, and according to Kime & Enghoff (2011) the species had not been recorded in the Atlantic zone of Spain. Djusrvoll (2019) states that this species occurs in the Atlantic zone, in the provinces of Alava and Asturias, but he provides no capture information or bibliographic references. The present record from Pesaguero confirms the occurence of the species in the Atlantic region of Spain. However, it is not clear whether this region was part of its native distribution range, whether it has been recently colonized due to natural dispersal of the species ( Hauser & Voigtländer 2009) or whether it is the result of anthropogenic introduction events (it has been introduced in North America, see for example Shelley (2002) or Kime & Enghoff (2011)). Interestingly, Polydesmus angustus was found in syntopy with P.coriaceus , the most common polydesmid in the present study.

Figures

FIG. 3. — Dorsal view of male adult specimens of all six polydesmid species collected: A, Archipolydesmus osellai Ceuca,1968 from the Sierra de Mencilla (MEF); B, Polydesmus angustus Latzel, 1884 from the Sierra Mediana (PES); C, Polydesmus asturiensis Djursvoll, 2019 from Llobango (LLO); D, Polydesmus coriaceus Porat, 1870 from the Sierra de Santo Domingo (SDF); E, Polydesmus racovitzai BrÖlemann, 1910 from the Sierra del Mencilla (MEF); F, Propolydesmus dismilus (Berlese, 1891) from the Sierra de Luesia (SL1). Scale bars: 2 mm.

FIG. 4. — Gonopods of four of the six species collected: A, left gonopod of Archipolydesmus osellai Ceuca, 1968 from the Sierra de Mencilla (MEF) in lateral view; B, right gonopod of Polydesmus angustus Latzel, 1884 from the Sierra Mediana (PES) in mesal view; C, left gonopod of Polydesmus coriaceus Porat, 1870 from the Sierra de Santo Domingo (SDF) in lateral view; D, left gonopod of Propolydesmus dismilus (Berlese, 1891) from the Sierra de Luesia (SL1) in lateral view. Scale bars: 0.5 mm.