Prostoma clepsinoides, Duges, 1828

Kajihara, Hiroshi, 2025, A taxonomic revision of the freshwater monostiliferous hoplonemertean genus Prostoma Dugès, 1828 (Nemertea: Eumonostilifera): a radical solution or an over-lumping?, Zootaxa 5646 (4), pp. 451-500 : 466

5. clepsinoides Dugès, 1828

Source. In the binomen Prostoma clepsinoides by Dugès (1828: 140, pl. 4, fig. 1, pl. 5, figs 25, 26).

Type locality. Not explicitly mentioned in the original description; deemed to be Montpellier, France ( Fig. 9 ), by later authors (e.g., Böhmig in Mojsisovics 1893; Joubin 1894; Koroleva et al. 2014).

Etymology. Noun, from the glossiphoniid freshwater-leech genus Clepsine Savigny, 1822 and the Latin suffix - oides (“one that resembles”). For the publication date of Savigny’s Description de l’Égypte, see Tollitt (1986).

Remarks. The incorrect original spelling of the specific name clepsinoïdes (with ï bearing diaeresis) has been corrected in accordance with Articles 11.2, 27, and 32.5.2. Prostoma clepsinoides has been regarded a nomen dubium by Stiasny-Wijnhoff (1938: 226, as “ P. clepsinoïdes ”) and by Gibson & Moore (1976: 194). Although P. clepsinoides was listed as an invalid name by Gibson (1995: 495), it is now restored as valid.

Figures

FIGURE 9. World map showing distribution of 25 nominal species of freshwater monostiliferous hoplonemerteans indicated by boxes and respective species-group names (three subterranean species are indicated with ‘S’ in parentheses); circles, diamond, and triangles indicate localities of DNA-barcoded individuals; circles, Haplogroup 1 from the UK, Sweden (SE), Italy (IT), Macedonia (MK), Japan (JP), New Zealand (NZ), Mexico (MX), Indiana (IN), and Massachusetts (MA); diamond, Haplogroup 2 from Norway (NO); triangles, Haplogroup 3 from Sweden (SE) and California (CA).