Daphniola magdalenae
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Ordo: Littorinimorpha
Familia: Hydrobiidae
Genus: Daphniola
Name
Daphniola magdalenae Falniowski sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Types
Ethanol-fixed specimens, Melissotrypa Cave, Thessalia, Greece, 39°52'38"N, 22°02'58"E, sulphidic lake, near the shore, June 2014, S. Sarbu coll., holotype: ZMUJ-M.2109; 20 paratypes: ZMUJ-M.2110-ZMUJ-M.2130.
Diagnosis
Shell relatively big, valvatiform-trochiform; soft parts with no pigment, no eyes, penis with long and slender filament and big outgrowth on the left side. Readily distinguished from geographically and closely related Daphniola exigua (= Daphniola graeca) by its bigger size (2.5 vs. 1.5 mm), reddish operculum, broader base and longer and thinner filament of the penis. Differentiated from Daphniola louisi (from Kessariani at Athens) by its larger size, higher spire, longer and thinner filament and more prominent outgrowth on the left side of the penis. Differs from Daphniola hadei (from Gythion at Peloponnese) by its double size, higher spire and much more prominent outgrowth on the left side of the penis.
Description
Shell (Fig. 2A–D) valvatiform-trochiform, up to 2.68 mm tall, having 3.5–3.75 whorls, spire height 16% height of shell, and 13–16% width of shell. Teleoconch whorls moderately convex, evenly rounded, growing rapidly in diameter. Aperture circular, parietal lip complete, umbilicus very broad, outer lip simple, orthocline. Teleoconch with delicate growth lines, periostracum pinkish. Shell parameters for a series of paratypes are given in Table 2. On the surface there are numerous pellets of sediment, most probably of sulfuric bacteria.
| shell heigth | shell heigth (mm) | spire heigth (mm) | body whorl width (mm) | aperture heigth (mm) | aperture width (mm) | whorl number |
|---|---|---|---|---|---|---|
| holotype | 2.51 | 0.38 | 1.99 | 1.37 | 1.34 | 3.5 |
| mean | 2.335 | 0.363 | 1.895 | 1.346 | 1.280 | 3.70 |
| sd | 0.1788 | 0.0503 | 0.1506 | 0.0797 | 0.0643 | 0.1083 |
| minimum | 2.16 | 0.28 | 1.76 | 1.20 | 1.19 | 3.50 |
| maximum | 2.68 | 0.43 | 2.21 | 1.44 | 1.39 | 3.75 |
Animal brownish, with no pigment, and no eyes (Fig. 8). Penis (Figs 9–11) having broad base bent U-shaped in natural position (Fig. 8), long and narrow filament and prominent outgrowth on its left edge. Female reproductive organs (Fig. 12) with big bursa copulatrix with long duct and two small receptacula seminis.
Etymology
Named in memory of Dr Magdalena Szarowska, a malacologist, wife and best friend of the first author.
Distribution and habitat
Known from the type locality only.
Original Description
- Falniowski, A; Sarbu, S; 2015: Two new Truncatelloidea species from Melissotrypa Cave in Greece (Caenogastropoda) ZooKeys, (530): 1-14. doi
Images
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![Figure 12. Renal and pallial section of female reproductive organs of Daphniola magdalenae (bc – bursa copulatrix, cbc – duct of bursa copulatrix, ga – albuminoid gland, gn – nidamental gland, gp – gonoporus, ov – oviduct, ovl – loop of (renal) oviduct, rs1, rs2 – receptacula seminis, nomenclature after Radoman (1973[1], 1983[2]), vc – ventral canal). Scale bar 1 mm.](/wiki/File:Zookeys-530-e6137-g005.jpg)
Other References
- ↑ Radoman P (1973) New classification of fresh and brackish water Prosobranchia from the Balkans and Asia Minor. Posebna Izdanja, Prirodnjacki Musej u Beogradu 32: 1–30.
- ↑ Radoman P (1983) Hydrobioidea a superfamily of Prosobranchia (Gastropoda). I. Systematics. Monographs Serbian Academy of Sciences and Arts, DXLVII, Department Sciences 57: 1–256.
