Fabaeformiscandona tora Smith and Kamiya, 2007

Smith, Robin J. & Janz, Horst, 2008, Recent species of the Family Candonidae (Ostracoda, Crustacea) from the ancient Lake Biwa, Central Japan, Journal of Natural History 42 (45 - 46), pp. 2865-2922 : 2869

Fabaeformiscandona tora Smith and Kamiya, 2007

( Figures 2C,D and 3 F–J).

Remarks

The carapace of males from Lake Biwa are slightly more angular along the dorsal margin compared with the type material from Kanazawa , Ishikawa Prefecture ( Smith and Kamiya 2007), but the morphology of the hemipenes and fifth limbs clearly demonstrates that they are conspecific. Previous records of this species are restricted to the type locality in Kanazawa. In Lake Biwa this species was found mostly on substrates containing large amounts of sand at depths ranging from 5.5 to 26.6 m, although two specimens were found at just 0.1 m depth. Localities 35, 46, 52, 56, 58, 60, 63, 73 and 92 in Figure 1 .

Figures

Figure 1. Location of Lake Biwa and sampling localities.

Figure 2. (A, B) Fabaeformiscandona japonica. (A) Male, whole carapace, right lateral view (LBM 1430003270); (B) female, whole carapace, right lateral view (LBM 1430003271). (C, D) Fabaeformiscandona tora. (C) Male, whole carapace, right lateral view (LBM 1430003275); (D) female, whole carapace, right lateral view (LBM 1430003276). (E, F) Fabaeformiscandona myllaina. (E) Male, whole carapace, right lateral view (LBM 1430003280); (F) female, whole

Figure 3. (A–E) Fabaeformiscandona japonica. (A) Male left valve, internal view (LBM 1430003274); (B) female left valve, internal view (LBM 1430003273); (C) male left L5 palp (LBM 1430003272); (D) male right L5 palp (LBM 1430003272); (E) Hp (m process shaded grey) (LBM 1430003272).(F–J) Fabaeformiscandonatora. (F)Male leftvalve,internal view (LBM 1430003279); (G)female leftvalve,internal view(LBM1430003278);(H) maleleftL5 palp(LBM1430003277);(I) male right L5 palp (LBM 1430003277); (J) Hp (m process shaded grey) (LBM 1430003277).(K–O) Fabaeformiscandona myllaina. (K) Male left valve, internal view (LBM 1430003283);(L) female left valve, internal view (LBM 1430003284); (M) male left L5 palp (LBM 1430003282); (N) male right L5 palp (LBM 1430003282); (O) Hp (m process shaded grey) (LBM 1430003282).