Pseudorientalia natolica (Küster, 1853)

Odabaşi, Deniz Anil, Mercan, Deniz, Odabaşi, Serpil & Arslan, Naime, 2024, A new species of Pseudorientalia (Gastropoda: Hydrobiidae) from midwestern Türkiye with notes on Pseudorientalia natolica (Küster, 1853), Zootaxa 5415 (4), pp. 585-592 : 590

Pseudorientalia natolica (Küster, 1853)

Topotype specimens: Twenty seven shells of P. natolica from type locality, leg. Deniz Anıl Odabaşı on 22 nd of May 2021 deposited in COMULM (G–251), were measured and 5 of them were cracked to reveal of the soft parts’ morphology including penis and female genitalia. Some of the mean values of shell morphometry as follows: SH = 1.6 mm, SW = 1.28 mm, AH = 0.89 mm, AW = 0.79 mm, BWH = 1.28 mm, BWW = 1.04 mm ( Table 2 ) .

Notes on morphology: Shell ovoid-conical with 3½–4 tumid whorls, body whorl massive, spire low, sutures deep, aperture ovoid – angled at the top, umbilicus slit-like ( Fig. 5–A , Table 2 ). Penis awl-like with rather broad base tapering to the tip, black pigmented in the middle ( Fig. 5–D, E ). Head and tentacles dark black pigmented ( Fig. 5–B ). Female genitalia unpigmented, bursa copulatrix flattened circular and covering half of the gland complex, renal oviduct strongly looped with two seminal receptacles: rs-1 very weak, rs-2 short but massive ( Fig. 5–F ).

Figures

FIGURE 5. Pseudorientalia natolica. A. Shell, B. Penis in situ, C. Operculum, D–E. Penis close-up, F. Female genitalia. Scale bars: A= 1 mm, B–F= 0.5 mm. ac: Alimentary canal, bc: Bursa copulatrix, e: Eye spot, f: Foot, p: Penis, ro: Renal oviduct, rs: Seminal receptacles, s: Snout, t: Tentacle.