Polydesmid millipedes in the MSS of the northern Iberian Peninsula (Diplopoda, Polydesmida, Polydesmidae) Author Gilgado, José D. Grupo de Investigación de Biología del Suelo y de los Ecosistemas Subterráneos, Departamento de Ciencias de la Vida, Facultad de Ciencias, Universidad de Alcalá, E- 28805, Alcalá de Henares, Madrid (Spain) josedomingo. gilgado @ gmail. com (corresponding author) vicente. ortuno @ uah. es gilgado@gmail.com Author Ortuño, Vicente M. Grupo de Investigación de Biología del Suelo y de los Ecosistemas Subterráneos, Departamento de Ciencias de la Vida, Facultad de Ciencias, Universidad de Alcalá, E- 28805, Alcalá de Henares, Madrid (Spain) josedomingo. gilgado @ gmail. com (corresponding author) vicente. ortuno @ uah. es gilgado@gmail.com text Zoosystema 2023 2023-09-08 45 15 451 461 journal article 270725 10.5252/zoosystema2023v45a15 df6146ba-f248-4514-a28f-53d39c8f0b76 1638-9387 8406495 D2DA84FF-104C-481E-81EB-CD1991C25424 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.