Promesostoma maculosum Ax 1956

Promesostoma maculosum Ax, 1956 (Fig. 2 C) New locality. Rota, Provincia de C��diz, Spain (36 �� 38 ���09���N, 6 �� 23 ��� 50 ���W). Los Corrales: thin layer of very coarse sand in intertidal pools on a rocky cape (11 /04/ 2008). Known distribution. Northeast Atlantic: European Atlantic coast (Ax 1956; Ehlers & Sopott-Ehlers 1989); Bosporus and Sea of Marmara (Ax 1959); Mediterranean: Corsica and Sardinia (Willems 2005 and pers. comm. from Wim Willems). Material. Several individuals studied alive. Five whole mounts. Remarks. Animals are between 0.8��� 2 mm (= 1.2 mm; n = 4) long. This species can easily be distinguished from other species of Promesostoma Graff, 1882 because the stylet is curled over 360 �� in the middle (Fig. 2 C). The stylet of the Spanish specimens is between 364���396 ��m long (= 383 ��m; n = 5), which is longer than in specimens from other known localities (�� 250 ��m in the specimens from the French Atlantic coast, Ax 1956; �� 290 ��m in the specimens from Corsica, Willems 2005; no measurements given for the specimens from the Eastern Mediterranean, Ax 1959). Its new intermediate location in southern Spain suggests this animal is probably widespread throughout the Mediterranean and Atlantic coast of southwestern Europe.
Published as part of Steenkiste, Niels Van, Tessens, Bart, Krznaric, Kathleen & Artois, Tom, 2011, Dalytyphloplanida (Platyhelminthes: Rhabdocoela) from Andalusia, Spain, with the description of four new species, pp. 1-29 in Zootaxa 2791 on page 4, DOI: 10.5281/zenodo.201106
{"references":["Ax, P. (1956) Turbellarien der Gattung Promesostoma von der franzosischen Atlantikkuste. Kieler Meeresforschungen, 12, 110 - 113.","Ehlers, U. & Sopott-Ehlers, B. (1989) Drei neue interstitielle Rhabdocoela (Platyhelminthes) von der franzosischen Atlantikkuste. Microfauna Marina, 5, 207 - 218.","Ax, P. (1959) Zur Systematik, Okologie und Tiergeographie der Turbellarienfauna in den ponto-kaspischen Brackwassermeeren. Zoologischer Jahrbucher - Abteilung fur Systematik, Geographie und Biologie der Tiere, 87, 43 - 184.","Graff, L. von (1882) Monographie der Turbellarien I. Rhabdocoelida. Text + Atlas, Leipzig, 442 pp., 20 t."]}