Salenthydrobia, 2003

Wilke, Thomas, 2003, Salenthydrobia gen. nov. (Rissooidea: Hydrobiidae): a potential relict of the Messinian salinity crisis, Zoological Journal of the Linnean Society 137 (2), pp. 319-336 : 333-336

SALENTHYDROBIA FERRERII SP. NOV.

Etymology. Named in honour of Dr Dario Ferreri of Lecce, Italy in recognition of his contribution to malacology in general and to the discovery of Salenthydrobia in particular.

Type material. Idume Creek (Torre Chianca, Lecce) [40.466∞N, 18.183∞E], 12 April 2000, Dario Ferreri. Holotype ( Fig. 6A ) ANSP, A19754 . Paratypes ANSP, A19755 (three wet specimens, Fig. 6B- D ); SMF 323031/2 (two wet specimens, Fig. 6E, F ).

Other material examined. Torre Castiglione (Torre Lapillo, Porto Cesareo, Lecce) [40.291∞N, 17.809∞E], 25 August 2000, Dario Ferreri, ANSP, A19756 ; Bambinello Spring (Torre Lapillo, Porto Cesareo, Lecce) [40.283∞N, 17.838∞E], 11 April 2000, Dario Ferreri, ANSP, A19757 .

Description. The description for the new species is the same as for the new genus above. Measurements of shell, soft body structures, and organs are given in Table 5 . Photographs of shells are provided in Figure 6 . For external features and pigmentation of the head see Figure 2E . Variations in morphology of the penis and the bursa copulatrix complex are shown in Figures 7 and 8 , respectively.

Figures

Figure 2. Head-penis complex in the four known genera of the Hydrobiinae (sensu Radoman, 1977): Hydrobia (A), Peringia (B), Ventrosia (C), Adriohydrobia (D), as well as in taxon A (E). Note that the general penis morphology is constant within the putative genera of the Hydrobiinae. All drawings are to scale.

Figure 6. Salenthydrobia ferrerii sp. nov., individuals preserved in ethanol. A, holotype (ANSP, A19754). B-D, paratypes (ANSP, A19755). E, F, paratypes (SMF 323031/2).

Figure 7. Salenthydrobia ferrerii sp. nov., penis morphology.

Figure 8. Salenthydrobia ferrerii sp. nov., bursa copulatrix complex.

Tables

Table 5. Measurements (in mm) and counts of characters of shell, soft body structures, and organs in 15 fresh specimens of Salenthydrobia ferrerii sp. nov. from the Idume Creek and Torre Castiglione populations. For an illustration of the measurements see Wilke et al. (2002: fig. 2).

		Female (n = 7)		Male (n = 8)
		Mean ± SD	Range	Mean ± SD	Range
Shell	No. whorls	5.54 ± 0.37	5.00–6.00	5.56 ± 0.32	5.00–6.00
	L. shell	3.24 ± 0.19	3.04–3.60	3.08 ± 0.18	2.76–3.32
	W. shell	1.61 ± 0.12	1.48–1.84	1.56 ± 0.10	1.44–1.68
	L. last three whorls	2.77 ± 0.39	1.96–3.20	2.76 ± 0.18	2.52–3.00
	W. third whorl	0.87 ± 0.09	0.76–1.02	0.84 ± 0.10	0.72–1.00
	L. body whorl	1.99 ± 0.13	1.84–2.20	1.91 ± 0.14	1.68–2.12
	L. penultimate whorl	0.54 ± 0.03	0.48–0.56	0.52 ± 0.06	0.46–0.60
	W. penultimate whorl	1.20 ± 0.10	1.08–1.36	1.15 ± 0.12	1.00–1.32
	L. aperture	1.14 ± 0.08	1.00–1.24	1.09 ± 0.08	0.96–1.24
	W. aperture	0.75 ± 0.05	0.68–0.84	0.74 ± 0.08	0.64–0.88
Soft body	L. soft body	4.56 ± 0.70	3.78–5.16	4.64 ± 0.60	3.84–5.16
	L. digestive gland	2.17 ± 0.35	1.80–2.50	2.22 ± 0.28	1.90–2.50
Reprod. system	L. gonad	1.99 ± 0.40	1.50–2.24	1.90 ± 0.21	1.40–2.26
	L. penis			1.61 ± 0.25	1.24–1.90
	L. seminal vesicle			1.24 ± 0.30	0.90–1.56
	L. prostate			0.94 ± 0.12	0.76–1.20
	W. prostate			0.39 ± 0.04	0.30–0.46
	L. albumen gland	0.58 ± 0.07	0.50–0.70
	W. albumen gland	0.40 ± 0.03	0.30–0.50
	L. capsule gland	0.70 ± 0.25	0.54–0.90
	W. capsule gland	0.39 ± 0.07	0.30–0.44
	L. bursa copulatrix	0.41 ± 0.02	0.26–0.52
	W. bursa copulatrix	0.27 ± 0.01	0.26–0.30
	L. duct bursa copulatrix	0.44 ± 0.05	0.36–0.50
	W. duct bursa copulatrix	0.07 ± 0.01	0.06–0.08
	L. seminal receptacle	0.17 ± 0.05	0.12–0.24