An annotated checklist of terrestrial flatworms (Platyhelminthes: Tricladida: Geoplanidae) from Mexico, with new records of invasive species from a citizen science platform and a new nomen dubium Author Luna, Manuel De 0000-0002-0746-0507 Universidad Autonoma de Nuevo Leon, Ciudad Universitaria, P. C. 66451, San Nicolas de los Garza, Nuevo Leoon, Mexico scolopendra 94 @ gmail. com; https: // orcid. org / 0000 - 0002 - 0746 - 0507 scolopendra94@gmail.com Author Boll, Piter Kehoma Universidade do Vale do Rio dos Sinos, Avenida Unisinos, 950, 93022 - 750, São Leopoldo, RS, Brazil text Zootaxa 2023 2023-06-06 5297 4 518 532 http://dx.doi.org/10.11646/zootaxa.5297.4.3 journal article 10.11646/zootaxa.5297.4.3 1175-5326 8009087 92A93902-69B9-4B4E-8FBA-79714AF43FFB Diporodemus yucatani Hyman, 1938 Fig. 10 . FIGURE 10. Diporodemus yucatani . Redrawn from Hyman (1938) , dorsal aspect of specimen. Scales not available. Hyman (1938 ; MEXICO : Yucatan ). Ogren et al . (1997: 74 , 93; catalog). Ogren & Kawakatsu (1998: 445 ; error, see below). Kawakatsu et al . (2000: 86 ; catalog). Kawakatsu et al . (2003: 104 ; catalog). External diagnosis ( Hyman 1938 ). Body elongated, salty-black, nearly cylindrical, and blunt at both ends. The anterior end bears a pair of eyes near the tip. Fixed specimens seem to show a reticulated pattern. The absence of a head plate differentiates it from both species of Bipalium and the paired eyes differ from all recorded Caenoplanini as well as Geoplana multipunctata . It differs from Rhynchodemus sylvaticus and both species of Dolichoplana in that it lacks any kind of stripes, as well as in the size, as this species is very small (around 12 mm ). Remarks . Ogren & Kawakatsu (1998) mention this species for Costa Rica and Diporodemus plenus Hyman, 1941 for Mexico , however, these are errors, as Diporodemus yucatani was described from Yucatan , Mexico , and Diporodemus plenus was described from Panama ( Hyman 1938 , 1941 ; Glasgow 2013 ). This is the only terrestrial flatworm whose type locality is officially in Mexico : Sabacha Cave, municipality of Tekax, state of Yucatan ; it is also likely that it is the only native species described so far.