Table 2 Comparison of the main specific characters in the species of the genus Pruvotina Cockerell, 1903
From: Three new species of Pruvotinidae (Mollusca: Solenogastres) from Antarctica and NW Spain
Pruvotina | cryophila | ?P. cryophila | (?) gauszi | impexa | longispinosa | megathecata | pallioglandulata | peniculata | praegnans | providens | uniperata | artabra n. sp. | manifesta n. sp. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Length (mm) | 5 | 2.1 | ? | 12 | 5 | 5 | 5 | 4 | 6 | 8.5 | 4 | 3.2 | 3 |
Middorsal crest of sclerites | − | − | − | − | − | − | − | + | − | − | − | − | − |
Pedal fold extending to pallial cavity | − | − | + | − | + | − | − | + | + | + | − | + | − |
Atrial papillae | Simple | Simple | ? | ? | Simple or paired | Grouped | Paired | Grouped | Paired or grouped | Grouped | Paired or grouped | Simple | Simple |
Medial radula denticles | 4 | 4 | ? | 3 | 4 | 3–4 | 4 | 3 | 3–4 | 3–4 | 4–5 | 4 | 5 |
Radular sheath paired | ? | − | ? | − | + | − | − | + | + | − | + | − | + |
Oesophagus | + | − | ? | + | + | + | − | + | + | + | ± | ± | + |
Anterodorsal midgut caecum | Unpaired | Unpaired | ? | Unpaired | Unpaired | Unpaired | Unpaired | Paired/unpaired | Unpaired | Unpaired | Unpaired | Paired/unpaired | Paired/unpaired |
Sphincters on the anterior midgut | − | − | ? | − | − | − | − | + | − | − | − | + | − |
Seminal vesicles | − | − | + at pd | − | − | − | − | − | − | − | − | + at gp | + at go |
Brood chambers | − | − | − | − | − | − | − | − | + | + | + | − | − |
Genital orifice opens into a ventroanterior pouch of the pallial cavity | − | − | + | − | − | − | − | + | + | + | − | + | − |
Suprapallial glands | + | − | + | − | − | + | + | + | − | − | ± | − | + |
Respiratory folds | 4 | 2–3 | 7 | 12–20 | 8–20 | Up to 30 | 8–10 | 2–5 | 16–28 | 13 | 10 | 14 | 10 |
Abdominal spicules | − | + | − | − | + | + | − | + | − | − | + | − | − |
Position of the dso respect to the pallial cavity | Dorsoposterior | Dorsoposterior | Dorsoposterior | Dorsoposterior | Dorsoposterior | Dorsoposterior | Dorsoposterior | Terminal | ? | ? | Terminal | Dorsoanterior | Terminal |